dvadf/home/homerdlh/public_html/1ef9ad/__pycache__.tar
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<LI>DOCUMENT_NAME
<LI>DOCUMENT_ROOT
<LI>DOCUMENT_URI
<LI>GATEWAY_INTERFACE
<LI>LAST_MODIFIED
<LI>PATH
<LI>PATH_INFO
<LI>PATH_TRANSLATED
<LI>QUERY_STRING
<LI>REMOTE_ADDR
<LI>REMOTE_HOST
<LI>REMOTE_IDENT
<LI>REMOTE_USER
<LI>REQUEST_METHOD
<LI>SCRIPT_NAME
<LI>SERVER_NAME
<LI>SERVER_PORT
<LI>SERVER_PROTOCOL
<LI>SERVER_ROOT
<LI>SERVER_SOFTWARE
</UL>
In addition, HTTP headers sent by the server may be passed in the
environment as well. Here are some common variable names:
<UL>
<LI>HTTP_ACCEPT
<LI>HTTP_CONNECTION
<LI>HTTP_HOST
<LI>HTTP_PRAGMA
<LI>HTTP_REFERER
<LI>HTTP_USER_AGENT
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codeop.cpython-38.opt-1.pyc 0000644 00000014423 15145007335 0011413 0 ustar 00 U
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G dd� d�Z dS )a[ Utilities to compile possibly incomplete Python source code.
This module provides two interfaces, broadly similar to the builtin
function compile(), which take program text, a filename and a 'mode'
and:
- Return code object if the command is complete and valid
- Return None if the command is incomplete
- Raise SyntaxError, ValueError or OverflowError if the command is a
syntax error (OverflowError and ValueError can be produced by
malformed literals).
Approach:
First, check if the source consists entirely of blank lines and
comments; if so, replace it with 'pass', because the built-in
parser doesn't always do the right thing for these.
Compile three times: as is, with \n, and with \n\n appended. If it
compiles as is, it's complete. If it compiles with one \n appended,
we expect more. If it doesn't compile either way, we compare the
error we get when compiling with \n or \n\n appended. If the errors
are the same, the code is broken. But if the errors are different, we
expect more. Not intuitive; not even guaranteed to hold in future
releases; but this matches the compiler's behavior from Python 1.4
through 2.2, at least.
Caveat:
It is possible (but not likely) that the parser stops parsing with a
successful outcome before reaching the end of the source; in this
case, trailing symbols may be ignored instead of causing an error.
For example, a backslash followed by two newlines may be followed by
arbitrary garbage. This will be fixed once the API for the parser is
better.
The two interfaces are:
compile_command(source, filename, symbol):
Compiles a single command in the manner described above.
CommandCompiler():
Instances of this class have __call__ methods identical in
signature to compile_command; the difference is that if the
instance compiles program text containing a __future__ statement,
the instance 'remembers' and compiles all subsequent program texts
with the statement in force.
The module also provides another class:
Compile():
Instances of this class act like the built-in function compile,
but with 'memory' in the sense described above.
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Arguments:
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symbol -- optional grammar start symbol; "single" (default), "exec"
or "eval"
Return value / exceptions raised:
- Return a code object if the command is complete and valid
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syntax error (OverflowError and ValueError can be produced by
malformed literals).
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with the statement in force.c C s t � | _d S r" )r r r* r r r r, � s zCommandCompiler.__init__r' r( c C s t | j|||�S )a� Compile a command and determine whether it is incomplete.
Arguments:
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default "<input>"
symbol -- optional grammar start symbol; "single" (default) or
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Two problems often exist with deep copy operations that don't exist
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b) because deep copy copies *everything* it may copy too much, e.g.
administrative data structures that should be shared even between
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set of components copied
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non-existing elements are considered to be infinite. The interesting
property of a heap is that a[0] is always its smallest element.
The strange invariant above is meant to be an efficient memory
representation for a tournament. The numbers below are `k', not a[k]:
0
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a usual binary tournament we see in sports, each cell is the winner
over the two cells it tops, and we can trace the winner down the tree
to see all opponents s/he had. However, in many computer applications
of such tournaments, we do not need to trace the history of a winner.
To be more memory efficient, when a winner is promoted, we try to
replace it by something else at a lower level, and the rule becomes
that a cell and the two cells it tops contain three different items,
but the top cell "wins" over the two topped cells.
If this heap invariant is protected at all time, index 0 is clearly
the overall winner. The simplest algorithmic way to remove it and
find the "next" winner is to move some loser (let's say cell 30 in the
diagram above) into the 0 position, and then percolate this new 0 down
the tree, exchanging values, until the invariant is re-established.
This is clearly logarithmic on the total number of items in the tree.
By iterating over all items, you get an O(n ln n) sort.
A nice feature of this sort is that you can efficiently insert new
items while the sort is going on, provided that the inserted items are
not "better" than the last 0'th element you extracted. This is
especially useful in simulation contexts, where the tree holds all
incoming events, and the "win" condition means the smallest scheduled
time. When an event schedule other events for execution, they are
scheduled into the future, so they can easily go into the heap. So, a
heap is a good structure for implementing schedulers (this is what I
used for my MIDI sequencer :-).
Various structures for implementing schedulers have been extensively
studied, and heaps are good for this, as they are reasonably speedy,
the speed is almost constant, and the worst case is not much different
than the average case. However, there are other representations which
are more efficient overall, yet the worst cases might be terrible.
Heaps are also very useful in big disk sorts. You most probably all
know that a big sort implies producing "runs" (which are pre-sorted
sequences, which size is usually related to the amount of CPU memory),
followed by a merging passes for these runs, which merging is often
very cleverly organised[1]. It is very important that the initial
sort produces the longest runs possible. Tournaments are a good way
to that. If, using all the memory available to hold a tournament, you
replace and percolate items that happen to fit the current run, you'll
produce runs which are twice the size of the memory for random input,
and much better for input fuzzily ordered.
Moreover, if you output the 0'th item on disk and get an input which
may not fit in the current tournament (because the value "wins" over
the last output value), it cannot fit in the heap, so the size of the
heap decreases. The freed memory could be cleverly reused immediately
for progressively building a second heap, which grows at exactly the
same rate the first heap is melting. When the first heap completely
vanishes, you switch heaps and start a new run. Clever and quite
effective!
In a word, heaps are useful memory structures to know. I use them in
a few applications, and I think it is good to keep a `heap' module
around. :-)
--------------------
[1] The disk balancing algorithms which are current, nowadays, are
more annoying than clever, and this is a consequence of the seeking
capabilities of the disks. On devices which cannot seek, like big
tape drives, the story was quite different, and one had to be very
clever to ensure (far in advance) that each tape movement will be the
most effective possible (that is, will best participate at
"progressing" the merge). Some tapes were even able to read
backwards, and this was also used to avoid the rewinding time.
Believe me, real good tape sorts were quite spectacular to watch!
From all times, sorting has always been a Great Art! :-)
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IPv4Interfacer r �
IPv6Interfacer r r
r
r � ip_interfaceW s
�r c C s0 z| � dd�W S tk
r* td��Y nX dS )a` Represent an address as 4 packed bytes in network (big-endian) order.
Args:
address: An integer representation of an IPv4 IP address.
Returns:
The integer address packed as 4 bytes in network (big-endian) order.
Raises:
ValueError: If the integer is negative or too large to be an
IPv4 IP address.
� �bigz&Address negative or too large for IPv4N��to_bytes�
OverflowErrorr r r
r
r �v4_int_to_packedz s r c C s0 z| � dd�W S tk
r* td��Y nX dS )z�Represent an address as 16 packed bytes in network (big-endian) order.
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address: An integer representation of an IPv6 IP address.
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� r z&Address negative or too large for IPv6Nr r r
r
r �v6_int_to_packed� s
r! c C s* t | ��d�}t|�dkr&td| ��|S )zAHelper to split the netmask and raise AddressValueError if needed�/� z Only one '/' permitted in %r)�str�split�lenr )r �addrr
r
r �_split_optional_netmask� s r( c c sN t | �}t|� }}|D ]&}|j|jd kr:||fV |}|}q||fV dS )z�Find a sequence of sorted deduplicated IPv#Address.
Args:
addresses: a list of IPv#Address objects.
Yields:
A tuple containing the first and last IP addresses in the sequence.
� N)�iter�next�_ip)� addresses�it�first�last�ipr
r
r �_find_address_range� s
r2 c C s$ | dkr |S t || | d @ �� �S )z�Count the number of zero bits on the right hand side.
Args:
number: an integer.
bits: maximum number of bits to count.
Returns:
The number of zero bits on the right hand side of the number.
r r) )�min�
bit_length)Znumber�bitsr
r
r �_count_righthand_zero_bits� s r6 c c s� t | t�rt |t�s td��| j|jkr8td| |f ��| |krHtd��| jdkrXt}n| jdkrht}ntd��| j}| j}|j}||kr�t t
||�|| d � � d �}|||| f�}|V |d|> 7 }|d |j kr�q�q�dS ) a� Summarize a network range given the first and last IP addresses.
Example:
>>> list(summarize_address_range(IPv4Address('192.0.2.0'),
... IPv4Address('192.0.2.130')))
... #doctest: +NORMALIZE_WHITESPACE
[IPv4Network('192.0.2.0/25'), IPv4Network('192.0.2.128/31'),
IPv4Network('192.0.2.130/32')]
Args:
first: the first IPv4Address or IPv6Address in the range.
last: the last IPv4Address or IPv6Address in the range.
Returns:
An iterator of the summarized IPv(4|6) network objects.
Raise:
TypeError:
If the first and last objects are not IP addresses.
If the first and last objects are not the same version.
ValueError:
If the last object is not greater than the first.
If the version of the first address is not 4 or 6.
z1first and last must be IP addresses, not networks�%%s and %s are not of the same versionz*last IP address must be greater than firstr � zunknown IP versionr) N)
�
isinstance� _BaseAddress� TypeError�versionr r r �_max_prefixlenr, r3 r6 r4 � _ALL_ONES)r/ r0 r1 Zip_bitsZ first_intZlast_intZnbits�netr
r
r �summarize_address_range� s8
� �
� r@ c c s� t | �}i }|rV|�� }|�� }|�|�}|dkr<|||< q ||kr ||= |�|� q d}t|�� �D ]$}|dk r�|j|jkr�qf|V |}qfdS )au Loops through the addresses, collapsing concurrent netblocks.
Example:
ip1 = IPv4Network('192.0.2.0/26')
ip2 = IPv4Network('192.0.2.64/26')
ip3 = IPv4Network('192.0.2.128/26')
ip4 = IPv4Network('192.0.2.192/26')
_collapse_addresses_internal([ip1, ip2, ip3, ip4]) ->
[IPv4Network('192.0.2.0/24')]
This shouldn't be called directly; it is called via
collapse_addresses([]).
Args:
addresses: A list of IPv4Network's or IPv6Network's
Returns:
A list of IPv4Network's or IPv6Network's depending on what we were
passed.
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r
r � _collapse_addresses_internal s$
rJ c C s0 g }g }g }| D ]�}t |t�rR|rF|d j|jkrFtd||d f ��|�|� q|j|jkr�|r�|d j|jkr�td||d f ��z|�|j� W q� tk
r� |�|j � Y q�X q|r�|d j|jkr�td||d f ��|�|� qt
t |��}|�r$t |�D ]\}}|�
t||�� �qt|| �S )a� Collapse a list of IP objects.
Example:
collapse_addresses([IPv4Network('192.0.2.0/25'),
IPv4Network('192.0.2.128/25')]) ->
[IPv4Network('192.0.2.0/24')]
Args:
addresses: An iterator of IPv4Network or IPv6Network objects.
Returns:
An iterator of the collapsed IPv(4|6)Network objects.
Raises:
TypeError: If passed a list of mixed version objects.
���r7 )r9 r: �_versionr; rE �
_prefixlenr= r1 �AttributeError�network_addressrF �setr2 �extendr@ rJ )r- ZaddrsZipsZnetsr1 r/ r0 r
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� � � rR c C s( t | t�r| �� S t | t�r$| �� S tS )a2 Return a key suitable for sorting between networks and addresses.
Address and Network objects are not sortable by default; they're
fundamentally different so the expression
IPv4Address('192.0.2.0') <= IPv4Network('192.0.2.0/24')
doesn't make any sense. There are some times however, where you may wish
to have ipaddress sort these for you anyway. If you need to do this, you
can use this function as the key= argument to sorted().
Args:
obj: either a Network or Address object.
Returns:
appropriate key.
)r9 � _BaseNetwork�_get_networks_keyr: �_get_address_key�NotImplemented)�objr
r
r �get_mixed_type_keyh s
rX c @ s� e Zd ZdZdZedd� �Zedd� �Zedd� �Zed d
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d� Z e dd� �Z
e dd� �Ze dd� �Ze dd� �Ze dd� �Ze dd� �Zdd � Zd S ) �_IPAddressBasezThe mother class.r
c C s | � � S )z:Return the longhand version of the IP address as a string.)� _explode_shorthand_ip_string��selfr
r
r �exploded� s z_IPAddressBase.explodedc C s t | �S )z;Return the shorthand version of the IP address as a string.�r$ r[ r
r
r �
compressed� s z_IPAddressBase.compressedc C s | � � S )aI The name of the reverse DNS pointer for the IP address, e.g.:
>>> ipaddress.ip_address("127.0.0.1").reverse_pointer
'1.0.0.127.in-addr.arpa'
>>> ipaddress.ip_address("2001:db8::1").reverse_pointer
'1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa'
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r
r �reverse_pointer� s z _IPAddressBase.reverse_pointerc C s dt | �f }t|��d S )Nz %200s has no version specified��type�NotImplementedError�r\ �msgr
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r
r �_check_int_address� s
�z!_IPAddressBase._check_int_addressc C s. t |�}||kr*d}t||||| jf ��d S )Nz6%r (len %d != %d) is not permitted as an IPv%d address)r& r rL )r\ r Z expected_lenZ address_lenrf r
r
r �_check_packed_address� s �z$_IPAddressBase._check_packed_addressc C s | j | j |? A S )z�Turn the prefix length into a bitwise netmask
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Returns:
An integer.
)r> )�cls� prefixlenr
r
r �_ip_int_from_prefix� s z"_IPAddressBase._ip_int_from_prefixc C s\ t || j�}| j| }||? }d|> d }||krX| jd }|�|d�}d}t|| ��|S )a Return prefix length from the bitwise netmask.
Args:
ip_int: An integer, the netmask in expanded bitwise format
Returns:
An integer, the prefix length.
Raises:
ValueError: If the input intermingles zeroes & ones
r) � r z&Netmask pattern %r mixes zeroes & ones)r6 r= r r ) ri �ip_intZtrailing_zeroesrj Z leading_onesZall_onesZbyteslenZdetailsrf r
r
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�
z"_IPAddressBase._prefix_from_ip_intc C s d| }t |�d �d S )Nz%r is not a valid netmask)r )ri Z netmask_strrf r
r
r �_report_invalid_netmask� s z&_IPAddressBase._report_invalid_netmaskc C sl |� � r|�� s| �|� z t|�}W n tk
rD | �|� Y nX d| kr\| jkshn | �|� |S )a Return prefix length from a numeric string
Args:
prefixlen_str: The string to be converted
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An integer, the prefix length.
Raises:
NetmaskValueError: If the input is not a valid netmask
r )�isascii�isdigitro �intr r= )ri Z
prefixlen_strrj r
r
r �_prefix_from_prefix_string� s
z)_IPAddressBase._prefix_from_prefix_stringc C s� z| � |�}W n tk
r, | �|� Y nX z | �|�W S tk
rN Y nX || jN }z | �|�W S tk
r� | �|� Y nX dS )a Turn a netmask/hostmask string into a prefix length
Args:
ip_str: The netmask/hostmask to be converted
Returns:
An integer, the prefix length.
Raises:
NetmaskValueError: If the input is not a valid netmask/hostmask
N)�_ip_int_from_stringr ro rn r r> )ri �ip_strrm r
r
r �_prefix_from_ip_string� s
z%_IPAddressBase._prefix_from_ip_stringc C sH t |ttf�r|| jfS t |t�s*t|�}t|�dkr:|S |d | jfS )z�Helper function to parse address of Network/Interface.
Arg:
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Returns:
(addr, prefix) tuple.
r) r )r9 �bytesrr r= �tupler( r& )ri r r
r
r �_split_addr_prefix s
z!_IPAddressBase._split_addr_prefixc C s | j t| �ffS �N)� __class__r$ r[ r
r
r �
__reduce__/ s z_IPAddressBase.__reduce__N)r r r r � __slots__�propertyr] r_ ra r< rg rh � classmethodrk rn ro rs rv ry r| r
r
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rY c @ sd e Zd ZdZdZdd� Zdd� Zdd� Zd d
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d� Z
dd� Z dd� Z dd� Z
dd� ZdS )r: z�A generic IP object.
This IP class contains the version independent methods which are
used by single IP addresses.
r
c C s | j S rz �r, r[ r
r
r �__int__> s z_BaseAddress.__int__c C s8 z| j |j ko| j|jkW S tk
r2 t Y S X d S rz )r, rL rN rV �r\ �otherr
r
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�z_BaseAddress.__eq__c C sF t |t�stS | j|jkr*td| |f ��| j|jkrB| j|jk S dS �Nr7 F)r9 r: rV rL r; r, r� r
r
r �__lt__H s
� z_BaseAddress.__lt__c C s t |t�stS | �t| �| �S rz �r9 rr rV r{ r� r
r
r �__add__T s
z_BaseAddress.__add__c C s t |t�stS | �t| �| �S rz r� r� r
r
r �__sub__Y s
z_BaseAddress.__sub__c C s d| j jt| �f S �Nz%s(%r)�r{ r r$ r[ r
r
r �__repr__^ s z_BaseAddress.__repr__c C s t | �| j��S rz )r$ �_string_from_ip_intr, r[ r
r
r �__str__a s z_BaseAddress.__str__c C s t tt| j���S rz )�hash�hexrr r, r[ r
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| j | fS rz �rL r[ r
r
r rU g s z _BaseAddress._get_address_keyc C s | j | jffS rz )r{ r, r[ r
r
r r| j s z_BaseAddress.__reduce__N)r r r r r} r� r� r� r� r� r� r� r� rU r| r
r
r
r r: 3 s r: c @ s` e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
d � Zd d
� Z dd� Z
dd� Z dd� Z dd� Z
ejdd� �Zejdd� �Zedd� �Zed d � �Zed d � �Zed d!� �Zed"d#� �Zed$d%� �Zd&d'� Zd(d)� Zd*d+� ZdFd.d/�Z dGd0d1�Z ed2d3� �Z e d4d5� �Z d6d7� Z!d8d9� Z"ed:d;� �Z#ed<d=� �Z$ed>d?� �Z%ed@dA� �Z&edBdC� �Z'edDdE� �Z(d-S )HrS z}A generic IP network object.
This IP class contains the version independent methods which are
used by networks.
c C s d| j jt| �f S r� r� r[ r
r
r r� v s z_BaseNetwork.__repr__c C s d| j | jf S �N�%s/%d)rO rj r[ r
r
r r� y s z_BaseNetwork.__str__c c s8 t | j�}t | j�}t|d |�D ]}| �|�V q"dS )z�Generate Iterator over usable hosts in a network.
This is like __iter__ except it doesn't return the network
or broadcast addresses.
r) N�rr rO rH �range�_address_class�r\ �network� broadcast�xr
r
r �hosts| s
z_BaseNetwork.hostsc c s8 t | j�}t | j�}t||d �D ]}| �|�V q"d S �Nr) r� r� r
r
r �__iter__� s
z_BaseNetwork.__iter__c C sl t | j�}t | j�}|dkr>|| |kr0td��| �|| �S |d7 }|| |k rZtd��| �|| �S d S )Nr zaddress out of ranger) )rr rO rH �
IndexErrorr� )r\ �nr� r� r
r
r � __getitem__� s
z_BaseNetwork.__getitem__c C s^ t |t�stS | j|jkr*td| |f ��| j|jkrB| j|jk S | j|jkrZ| j|jk S dS r� )r9 rS rV rL r; rO �netmaskr� r
r
r r� � s
� z_BaseNetwork.__lt__c C sL z.| j |j ko,| j|jko,t| j�t|j�kW S tk
rF t Y S X d S rz )rL rO rr r� rN rV r� r
r
r r� � s
��z_BaseNetwork.__eq__c C s t t| j�t| j�A �S rz )r� rr rO r� r[ r
r
r r� � s z_BaseNetwork.__hash__c C s8 | j |j krdS t|t�r dS |j| jj@ | jjkS d S �NF)rL r9 rS r, r� rO r� r
r
r � __contains__� s
z_BaseNetwork.__contains__c C s( | j |kp&| j|kp&|j | kp&|j| kS )z*Tell if self is partly contained in other.)rO rH r� r
r
r �overlaps� s
�z_BaseNetwork.overlapsc C s | � t| j�t| j�B �S rz )r� rr rO �hostmaskr[ r
r
r rH � s �z _BaseNetwork.broadcast_addressc C s | � t| j�| jA �S rz )r� rr r� r> r[ r
r
r r� � s z_BaseNetwork.hostmaskc C s d| j | jf S r� )rO rM r[ r
r
r �with_prefixlen� s z_BaseNetwork.with_prefixlenc C s d| j | jf S �N�%s/%s)rO r� r[ r
r
r � with_netmask� s z_BaseNetwork.with_netmaskc C s d| j | jf S r� )rO r� r[ r
r
r �
with_hostmask� s z_BaseNetwork.with_hostmaskc C s t | j�t | j� d S )z&Number of hosts in the current subnet.r) )rr rH rO r[ r
r
r �
num_addresses� s z_BaseNetwork.num_addressesc C s dt | �f }t|��d S )Nz%%200s has no associated address classrb re r
r
r r� � s z_BaseNetwork._address_classc C s | j S rz )rM r[ r
r
r rj � s z_BaseNetwork.prefixlenc c s | j |j ks td| |f ��t|t�s2td| ��|�| �sLtd|| f ��|| krXdS |�d|j|jf �}| � � \}}||kr�||kr�|�|�r�|V |� � \}}qz|�|�r�|V |� � \}}qzt
d|||f ��qz||kr�|V n"||kr�|V nt
d|||f ��dS )a� Remove an address from a larger block.
For example:
addr1 = ip_network('192.0.2.0/28')
addr2 = ip_network('192.0.2.1/32')
list(addr1.address_exclude(addr2)) =
[IPv4Network('192.0.2.0/32'), IPv4Network('192.0.2.2/31'),
IPv4Network('192.0.2.4/30'), IPv4Network('192.0.2.8/29')]
or IPv6:
addr1 = ip_network('2001:db8::1/32')
addr2 = ip_network('2001:db8::1/128')
list(addr1.address_exclude(addr2)) =
[ip_network('2001:db8::1/128'),
ip_network('2001:db8::2/127'),
ip_network('2001:db8::4/126'),
ip_network('2001:db8::8/125'),
...
ip_network('2001:db8:8000::/33')]
Args:
other: An IPv4Network or IPv6Network object of the same type.
Returns:
An iterator of the IPv(4|6)Network objects which is self
minus other.
Raises:
TypeError: If self and other are of differing address
versions, or if other is not a network object.
ValueError: If other is not completely contained by self.
r7 z%s is not a network objectz%s not contained in %sNr� z3Error performing exclusion: s1: %s s2: %s other: %s) rL r; r9 rS � subnet_ofr r{ rO rj rI �AssertionError)r\ r� �s1�s2r
r
r �address_exclude� s@ $ �
�
��z _BaseNetwork.address_excludec C s` | j |j kr td| |f ��| j|jk r,dS | j|jkr<dS | j|jk rLdS | j|jkr\dS dS )a� Compare two IP objects.
This is only concerned about the comparison of the integer
representation of the network addresses. This means that the
host bits aren't considered at all in this method. If you want
to compare host bits, you can easily enough do a
'HostA._ip < HostB._ip'
Args:
other: An IP object.
Returns:
If the IP versions of self and other are the same, returns:
-1 if self < other:
eg: IPv4Network('192.0.2.0/25') < IPv4Network('192.0.2.128/25')
IPv6Network('2001:db8::1000/124') <
IPv6Network('2001:db8::2000/124')
0 if self == other
eg: IPv4Network('192.0.2.0/24') == IPv4Network('192.0.2.0/24')
IPv6Network('2001:db8::1000/124') ==
IPv6Network('2001:db8::1000/124')
1 if self > other
eg: IPv4Network('192.0.2.128/25') > IPv4Network('192.0.2.0/25')
IPv6Network('2001:db8::2000/124') >
IPv6Network('2001:db8::1000/124')
Raises:
TypeError if the IP versions are different.
z"%s and %s are not of the same typerK r) r )rL r; rO r� r� r
r
r �compare_networks6 s ! � z _BaseNetwork.compare_networksc C s | j | j| jfS )z�Network-only key function.
Returns an object that identifies this address' network and
netmask. This function is a suitable "key" argument for sorted()
and list.sort().
)rL rO r� r[ r
r
r rT f s z _BaseNetwork._get_networks_keyr) Nc c s� | j | jkr| V dS |dk rJ|| j k r0td��|dkr@td��|| j }|dk rZtd��| j | }|| jkr~td|| f ��t| j�}t| j�d }t| j�d |? }t|||�D ]}| �||f�}|V q�dS )a� The subnets which join to make the current subnet.
In the case that self contains only one IP
(self._prefixlen == 32 for IPv4 or self._prefixlen == 128
for IPv6), yield an iterator with just ourself.
Args:
prefixlen_diff: An integer, the amount the prefix length
should be increased by. This should not be set if
new_prefix is also set.
new_prefix: The desired new prefix length. This must be a
larger number (smaller prefix) than the existing prefix.
This should not be set if prefixlen_diff is also set.
Returns:
An iterator of IPv(4|6) objects.
Raises:
ValueError: The prefixlen_diff is too small or too large.
OR
prefixlen_diff and new_prefix are both set or new_prefix
is a smaller number than the current prefix (smaller
number means a larger network)
Nznew prefix must be longerr) �(cannot set prefixlen_diff and new_prefixr z prefix length diff must be > 0z0prefix length diff %d is invalid for netblock %s) rM r= r rr rO rH r� r� r{ ) r\ �prefixlen_diff�
new_prefix�
new_prefixlen�start�end�stepZnew_addrZcurrentr
r
r rI p s2
��
z_BaseNetwork.subnetsc C s� | j dkr| S |dk rB|| j kr(td��|dkr8td��| j | }| j| }|dk rftd| j|f ��| �t| j�t| j�|> @ |f�S )a� The supernet containing the current network.
Args:
prefixlen_diff: An integer, the amount the prefix length of
the network should be decreased by. For example, given a
/24 network and a prefixlen_diff of 3, a supernet with a
/21 netmask is returned.
Returns:
An IPv4 network object.
Raises:
ValueError: If self.prefixlen - prefixlen_diff < 0. I.e., you have
a negative prefix length.
OR
If prefixlen_diff and new_prefix are both set or new_prefix is a
larger number than the current prefix (larger number means a
smaller network)
r Nznew prefix must be shorterr) r� z;current prefixlen is %d, cannot have a prefixlen_diff of %d)rM r rj r{ rr rO r� )r\ r� r� r� r
r
r rC � s&
���z_BaseNetwork.supernetc C s | j jo| jjS �z�Test if the address is reserved for multicast use.
Returns:
A boolean, True if the address is a multicast address.
See RFC 2373 2.7 for details.
)rO � is_multicastrH r[ r
r
r r� � s �z_BaseNetwork.is_multicastc C sh z:| j |j kr"t| � d|� d���|j| jko8|j| jkW S tk
rb td| � d|� ���Y nX d S )Nz and z are not of the same versionz*Unable to test subnet containment between )rL r; rO rH rN )�a�br
r
r �
_is_subnet_of� s
�z_BaseNetwork._is_subnet_ofc C s | � | |�S )z1Return True if this network is a subnet of other.�r� r� r
r
r r� � s z_BaseNetwork.subnet_ofc C s | � || �S )z3Return True if this network is a supernet of other.r� r� r
r
r � supernet_of� s z_BaseNetwork.supernet_ofc C s | j jo| jjS )��Test if the address is otherwise IETF reserved.
Returns:
A boolean, True if the address is within one of the
reserved IPv6 Network ranges.
)rO � is_reservedrH r[ r
r
r r� � s �z_BaseNetwork.is_reservedc C s | j jo| jjS �z�Test if the address is reserved for link-local.
Returns:
A boolean, True if the address is reserved per RFC 4291.
)rO �
is_link_localrH r[ r
r
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)r� �_unspecified_addressr[ r
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)r� �_loopback_networkr[ r
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dS ) r ae This class represents and manipulates 32-bit IPv4 network + addresses..
Attributes: [examples for IPv4Network('192.0.2.0/27')]
.network_address: IPv4Address('192.0.2.0')
.hostmask: IPv4Address('0.0.0.31')
.broadcast_address: IPv4Address('192.0.2.32')
.netmask: IPv4Address('255.255.255.224')
.prefixlen: 27
Tc s� | � |�\� }t� �| _| �|�\| _| _t| j�}|t| j�@ |krl|rXtd| ��nt|t| j�@ �| _| j| jd kr�| j | _
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'192.0.2.0/24'
'192.0.2.0/255.255.255.0'
'192.0.2.0/0.0.0.255'
are all functionally the same in IPv4. Similarly,
'192.0.2.1'
'192.0.2.1/255.255.255.255'
'192.0.2.1/32'
are also functionally equivalent. That is to say, failing to
provide a subnetmask will create an object with a mask of /32.
If the mask (portion after the / in the argument) is given in
dotted quad form, it is treated as a netmask if it starts with a
non-zero field (e.g. /255.0.0.0 == /8) and as a hostmask if it
starts with a zero field (e.g. 0.255.255.255 == /8), with the
single exception of an all-zero mask which is treated as a
netmask == /0. If no mask is given, a default of /32 is used.
Additionally, an integer can be passed, so
IPv4Network('192.0.2.1') == IPv4Network(3221225985)
or, more generally
IPv4Interface(int(IPv4Interface('192.0.2.1'))) ==
IPv4Interface('192.0.2.1')
Raises:
AddressValueError: If ipaddress isn't a valid IPv4 address.
NetmaskValueError: If the netmask isn't valid for
an IPv4 address.
ValueError: If strict is True and a network address is not
supplied.
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198.18.0.0/15z198.51.100.0/24z203.0.113.0/24z 240.0.0.0/4z255.255.255.255/32z0.0.0.0N) r r r r r� r� r� r� r� r� r
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r� �:r� z At least %d parts expected in %rr� rK r� N�%xr � r) z!At most %d colons permitted in %rz At most one '::' permitted in %rr z0Leading ':' only permitted as part of '::' in %rz1Trailing ':' only permitted as part of '::' in %rz/Expected at most %d other parts with '::' in %rz,Exactly %d parts expected without '::' in %r) r r% r& r
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sequence of "0" in the list with "" and adding empty strings at
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Returns:
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rK r r� r) � )� enumerater& ) ri �hextetsZbest_doublecolon_startZbest_doublecolon_lenZdoublecolon_startZdoublecolon_len�indexZhextetZbest_doublecolon_endr
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z$_BaseV6._explode_shorthand_ip_stringc C s& | j ddd� �dd�}d�|�d S )z�Return the reverse DNS pointer name for the IPv6 address.
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NrK r r r� z .ip6.arpa)r] �replacer� )r\ Z
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IPv6Address('2001:db8::') ==
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or, more generally
IPv6Address(int(IPv6Address('2001:db8::'))) ==
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Raises:
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r r� � s zIPv6Address.is_loopbackc C s | j d? dkrdS t| j d@ �S )z�Return the IPv4 mapped address.
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r r N� �� �r, r
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r � ipv4_mapped� s zIPv6Address.ipv4_mappedc C s4 | j d? dkrdS t| j d? d@ �t| j d@ �fS )z�Tuple of embedded teredo IPs.
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2001::/32)
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�zIPv6Address.teredoc C s$ | j d? dkrdS t| j d? d@ �S )z�Return the IPv4 6to4 embedded address.
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z(?m)^\.z..�(?:\r\n|\n|\r(?!\n))��re�sub�CRLF��datar r r r � s �c C s t �dd| �S )Ns (?m)^\.s ..)r2 r3 )Zbindatar r r �_quote_periods� s r7 c C s t �dt| �S )Nr0 r1 r5 r r r � _fix_eols� s r8 FTc @ sz e Zd ZdZdZdZdZdZdZdZ dZ
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� Zdd� Zdd� ZdNdd�Zdd� ZdOdd�Zdd� ZdPdd �ZdQd d �ZdRd d �Zd!d"� Z dSd#d$�Z d%d&� Z d'd(� Z d)d*� Z dTd,d-�Z!dUd.d/�Z"d0d1� Z#d2d3� Z$e$Z%d4d5� Z&d6d7� Z'd8d9�d:d;�Z(dVd<d=�Z)dWd>d?�Z*dXd@dA�Z+d8d9�dBdC�Z,dYdDdE�Z-dZdFdG�Z.d[dHdI�Z/dJdK� Z0dLdM� Z1dS )\r a� This class manages a connection to an SMTP or ESMTP server.
SMTP Objects:
SMTP objects have the following attributes:
helo_resp
This is the message given by the server in response to the
most recent HELO command.
ehlo_resp
This is the message given by the server in response to the
most recent EHLO command. This is usually multiline.
does_esmtp
This is a True value _after you do an EHLO command_, if the
server supports ESMTP.
esmtp_features
This is a dictionary, which, if the server supports ESMTP,
will _after you do an EHLO command_, contain the names of the
SMTP service extensions this server supports, and their
parameters (if any).
Note, all extension names are mapped to lower case in the
dictionary.
See each method's docstrings for details. In general, there is a
method of the same name to perform each SMTP command. There is also a
method called 'sendmail' that will do an entire mail transaction.
r N�ehlor& c
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r� Y nX d| | _ dS )a Initialize a new instance.
If specified, `host` is the name of the remote host to which to
connect. If specified, `port` specifies the port to which to connect.
By default, smtplib.SMTP_PORT is used. If a host is specified the
connect method is called, and if it returns anything other than a
success code an SMTPConnectError is raised. If specified,
`local_hostname` is used as the FQDN of the local host in the HELO/EHLO
command. Otherwise, the local hostname is found using
socket.getfqdn(). The `source_address` parameter takes a 2-tuple (host,
port) for the socket to bind to as its source address before
connecting. If the host is '' and port is 0, the OS default behavior
will be used.
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|| _ dS )z�Set the debug output level.
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"zSMTP._print_debugc C s2 | j dkr | �d||f| j� t�||f|| j�S )Nr z connect: to)rO rY rA rF �create_connection)r rG rH r> r r r � _get_socket1 s
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|| _ |s||�d�|�d�kr||�d�}|dkr||d|� ||d d� }}z t|�}W n tk
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� \}}| jdkr�| �dt|�� ||fS )ap Connect to a host on a given port.
If the hostname ends with a colon (`:') followed by a number, and
there is no port specified, that suffix will be stripped off and the
number interpreted as the port number to use.
Note: This method is automatically invoked by __init__, if a host is
specified during instantiation.
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z SMTP.connectc C s� | j dkr| �dt|�� | jr|t|t�r6|�| j�}t� d| |� z| j�
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d��dS )zSend `s' to the server.r zsend:z smtplib.send�Server not connectedzplease run connect() firstN)rO rY rh rf �
isinstance�str�encoder@ rV re Zsendallrc rD r )r �sr r r �sendZ s
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z\nz\rz=command and arguments contain prohibited newline characters: N)�replacerb ro r4 )r �cmdr rn r r r �putcmdm s �z SMTP.putcmdc
C sP g }| j dkr | j�d�| _ z| j �td �}W n: tk
rj } z | �� tdt|� ��W 5 d}~X Y nX |s�| �� td��| j dkr�| �
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d||f � ||fS )a� Get a reply from the server.
Returns a tuple consisting of:
- server response code (e.g. '250', or such, if all goes well)
Note: returns -1 if it can't read response code.
- server response string corresponding to response code (multiline
responses are converted to a single, multiline string).
Raises SMTPServerDisconnected if end-of-file is reached.
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SMTP.getreplyc C s | � ||� | �� S )z-Send a command, and return its response code.�ru rg )r rt r r r r rL � s z
SMTP.docmdc C s, | � d|p| j� | �� \}}|| _||fS )zwSMTP 'helo' command.
Hostname to send for this command defaults to the FQDN of the local
host.
�helo)ru rE rg � helo_resp)r �namer r r r r r� � s z SMTP.heloc
C s. i | _ | �| j|p| j� | �� \}}|dkrJt|�dkrJ| �� td��|| _|dkr`||fS d| _ | j�
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| | j |< q�| | j |< q�||fS )zx SMTP 'ehlo' command.
Hostname to send for this command defaults to the FQDN of the local
host.
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�� z SMTP.ehloc C s |� � | jkS )z7Does the server support a given SMTP service extension?)r� r? )r �optr r r �has_extn� s z
SMTP.has_extnc C s | � d|� | �� d S )z;SMTP 'help' command.
Returns help text from server.�helprQ r� rX r r r r� � s z SMTP.helpc C s d| _ | �d�S )z&SMTP 'rset' command -- resets session.r: �rset)r@ rL rI r r r r� � s z SMTP.rsetc C s& z | � � W n tk
r Y nX dS )a Internal 'rset' command which ignores any SMTPServerDisconnected error.
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should appear to the application when the *next* command is issued, if
we are doing an internal "safety" reset.
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| � d�S )z-SMTP 'noop' command -- doesn't do anything :>�noop)rL rI r r r r� s z SMTP.noopr c C sh d}|rH| j rHtdd� |D ��r:| �d�r2d| _ntd��dd�|� }| �dd t|�|f � | �� S )
a8 SMTP 'mail' command -- begins mail xfer session.
This method may raise the following exceptions:
SMTPNotSupportedError The options parameter includes 'SMTPUTF8'
but the SMTPUTF8 extension is not supported by
the server.
r& c s s | ]}|� � d kV qdS )�smtputf8N)r� )�.0�xr r r � <genexpr> s z SMTP.mail.<locals>.<genexpr>r� zutf-8z SMTPUTF8 not supported by serverrp �mailz FROM:%s%s) r� �anyr� r@ r r� ru r
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�z SMTP.mailc C s< d}|r | j r dd�|� }| �ddt|�|f � | �� S )z;SMTP 'rcpt' command -- indicates 1 recipient for this mail.r& rp �rcptzTO:%s%s)r� r� ru r
rg )r Zrecipr� r� r r r r� " s
z SMTP.rcptc C s� | � d� | �� \}}| jdkr0| �d||f� |dkrDt||��n|t|t�r\t|��d�}t |�}|dd� t
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}| � |� | �� \}}| jdkr�| �d||f� ||fS dS ) a� SMTP 'DATA' command -- sends message data to server.
Automatically quotes lines beginning with a period per rfc821.
Raises SMTPDataError if there is an unexpected reply to the
DATA command; the return value from this method is the final
response code received when the all data is sent. If msg
is a string, lone '\r' and '\n' characters are converted to
'\r\n' characters. If msg is bytes, it is transmitted as is.
r6 r zdata:ib r: ���N� .) ru rg rO rY r rk rl r8 rm r7 �bCRLFro )r r r �repl�qr r r r6 * s"
z SMTP.datac C s | � dt|�� | �� S )z5SMTP 'verify' command -- checks for address validity.�vrfy�ru r/ rg �r Zaddressr r r �verifyG s z SMTP.verifyc C s | � dt|�� | �� S )z.SMTP 'expn' command -- expands a mailing list.�expnr� r� r r r r� N s z SMTP.expnc C sb | j dkr^| jdkr^d| �� d kr0dks^n | �� \}}d| krRdks^n t||��dS )ab Call self.ehlo() and/or self.helo() if needed.
If there has been no previous EHLO or HELO command this session, this
method tries ESMTP EHLO first.
This method may raise the following exceptions:
SMTPHeloError The server didn't reply properly to
the helo greeting.
N�� r i+ )r� r� r9 r� r )r r r� r r r �ehlo_or_helo_if_neededU s
zSMTP.ehlo_or_helo_if_neededT��initial_response_okc C s� |� � }|r|� nd}|dk rPt|�d�dd�}| �d|d | �\}}d| _n| �d|�\}}d| _|d kr�| jd7 _t�|�}t||��d�dd�}| �|�\}}| jtkrftd
t ||f� ��qf|d kr�||fS t
||��dS ) a� Authentication command - requires response processing.
'mechanism' specifies which authentication mechanism is to
be used - the valid values are those listed in the 'auth'
element of 'esmtp_features'.
'authobject' must be a callable object taking a single argument:
data = authobject(challenge)
It will be called to process the server's challenge response; the
challenge argument it is passed will be a bytes. It should return
an ASCII string that will be base64 encoded and sent to the server.
Keyword arguments:
- initial_response_ok: Allow sending the RFC 4954 initial-response
to the AUTH command, if the authentication methods supports it.
Nr: r& )ZeolZAUTHrp rQ r iN z4Server AUTH mechanism infinite loop. Last response: ��� i� ) �upper�
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��z SMTP.authc C s0 |dkr dS | j d t�| j�d�|d��� S )zh Authobject to use with CRAM-MD5 authentication. Requires self.user
and self.password to be set.Nrp r: Zmd5)�user�hmacZHMAC�passwordrm Z hexdigest�r r� r r r �
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�zSMTP.auth_cram_md5c C s d| j | jf S )ze Authobject to use with PLAIN authentication. Requires self.user and
self.password to be set.z %s %s)r� r� r� r r r �
auth_plain� s zSMTP.auth_plainc C s" |dks| j dk r| jS | jS dS )ze Authobject to use with LOGIN authentication. Requires self.user and
self.password to be set.N� )rB r� r� r� r r r �
auth_login� s zSMTP.auth_loginc s� | � � | �d�std��| jd �� � dddg}� fdd�|D �}|sPtd��|| | _| _|D ]t}d |�� � d
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The arguments are:
- user: The user name to authenticate with.
- password: The password for the authentication.
Keyword arguments:
- initial_response_ok: Allow sending the RFC 4954 initial-response
to the AUTH command, if the authentication methods supports it.
If there has been no previous EHLO or HELO command this session, this
method tries ESMTP EHLO first.
This method will return normally if the authentication was successful.
This method may raise the following exceptions:
SMTPHeloError The server didn't reply properly to
the helo greeting.
SMTPAuthenticationError The server didn't accept the username/
password combination.
SMTPNotSupportedError The AUTH command is not supported by the
server.
SMTPException No suitable authentication method was
found.
r� z,SMTP AUTH extension not supported by server.zCRAM-MD5ZPLAINZLOGINc s g | ]}|� kr|�qS r r )r� r� �Zadvertised_authlistr r �
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t||��||fS )a� Puts the connection to the SMTP server into TLS mode.
If there has been no previous EHLO or HELO command this session, this
method tries ESMTP EHLO first.
If the server supports TLS, this will encrypt the rest of the SMTP
session. If you provide the keyfile and certfile parameters,
the identity of the SMTP server and client can be checked. This,
however, depends on whether the socket module really checks the
certificates.
This method may raise the following exceptions:
SMTPHeloError The server didn't reply properly to
the helo greeting.
�starttlsz+STARTTLS extension not supported by server.ZSTARTTLSr; z&No SSL support included in this PythonN�4context and keyfile arguments are mutually exclusive�5context and certfile arguments are mutually exclusiver �Akeyfile and certfile are deprecated, use a custom context insteadr� ��certfile�keyfile�Zserver_hostname)r� r� r rL � _have_ssl� RuntimeErrorrb �warnings�warn�DeprecationWarning�ssl�_create_stdlib_context� wrap_socketrf r= rR r� r� r? r� r )r r� r� �contextr� Zreplyr� r r r r� � sB
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S )a| This command performs an entire mail transaction.
The arguments are:
- from_addr : The address sending this mail.
- to_addrs : A list of addresses to send this mail to. A bare
string will be treated as a list with 1 address.
- msg : The message to send.
- mail_options : List of ESMTP options (such as 8bitmime) for the
mail command.
- rcpt_options : List of ESMTP options (such as DSN commands) for
all the rcpt commands.
msg may be a string containing characters in the ASCII range, or a byte
string. A string is encoded to bytes using the ascii codec, and lone
\r and \n characters are converted to \r\n characters.
If there has been no previous EHLO or HELO command this session, this
method tries ESMTP EHLO first. If the server does ESMTP, message size
and each of the specified options will be passed to it. If EHLO
fails, HELO will be tried and ESMTP options suppressed.
This method will return normally if the mail is accepted for at least
one recipient. It returns a dictionary, with one entry for each
recipient that was refused. Each entry contains a tuple of the SMTP
error code and the accompanying error message sent by the server.
This method may raise the following exceptions:
SMTPHeloError The server didn't reply properly to
the helo greeting.
SMTPRecipientsRefused The server rejected ALL recipients
(no mail was sent).
SMTPSenderRefused The server didn't accept the from_addr.
SMTPDataError The server replied with an unexpected
error code (other than a refusal of
a recipient).
SMTPNotSupportedError The mail_options parameter includes 'SMTPUTF8'
but the SMTPUTF8 extension is not supported by
the server.
Note: the connection will be open even after an exception is raised.
Example:
>>> import smtplib
>>> s=smtplib.SMTP("localhost")
>>> tolist=["one@one.org","two@two.org","three@three.org","four@four.org"]
>>> msg = '''\
... From: Me@my.org
... Subject: testin'...
...
... This is a test '''
>>> s.sendmail("me@my.org",tolist,msg)
{ "three@three.org" : ( 550 ,"User unknown" ) }
>>> s.quit()
In the above example, the message was accepted for delivery to three
of the four addresses, and one was rejected, with the error code
550. If all addresses are accepted, then the method will return an
empty dictionary.
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||�S ) a~ Converts message to a bytestring and passes it to sendmail.
The arguments are as for sendmail, except that msg is an
email.message.Message object. If from_addr is None or to_addrs is
None, these arguments are taken from the headers of the Message as
described in RFC 2822 (a ValueError is raised if there is more than
one set of 'Resent-' headers). Regardless of the values of from_addr and
to_addr, any Bcc field (or Resent-Bcc field, when the Message is a
resent) of the Message object won't be transmitted. The Message
object is then serialized using email.generator.BytesGenerator and
sendmail is called to transmit the message. If the sender or any of
the recipient addresses contain non-ASCII and the server advertises the
SMTPUTF8 capability, the policy is cloned with utf8 set to True for the
serialization, and SMTPUTF8 and BODY=8BITMIME are asserted on the send.
If the server does not support SMTPUTF8, an SMTPNotSupported error is
raised. Otherwise the generator is called without modifying the
policy.
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�zSMTP.send_messagec C s< z | j}d| _|r|�� W 5 | j }d| _ |r6|�� X dS )z(Close the connection to the SMTP server.N)rf rD rR )r rf rR r r r rD � s z
SMTP.closec C s. | � d�}d | _| _i | _d| _| �� |S )zTerminate the SMTP session.�quitNF)rL r� r� r? r� rD )r �resr r r r� � s
z SMTP.quit)r\ r N)r& )r& )r& )r& )r& )r )r )N)N)N)NNN)r r )NNr r )2r r r r rO rf rR r� r� r� r� � SMTP_PORTrd rF �_GLOBAL_DEFAULT_TIMEOUTr! rJ rN rP rY r[ rC ro ru rg rL r� r9 r� r� r� r� r� r� r� r6 r� r� r� r� r� r� r� r� r� r� r� r� rD r� r r r r r � sh �
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c @ s8 e Zd ZdZeZdddddejddfdd�Zdd� Z dS ) �SMTP_SSLa� This is a subclass derived from SMTP that connects over an SSL
encrypted socket (to use this class you need a socket module that was
compiled with SSL support). If host is not specified, '' (the local
host) is used. If port is omitted, the standard SMTP-over-SSL port
(465) is used. local_hostname and source_address have the same meaning
as they do in the SMTP class. keyfile and certfile are also optional -
they can contain a PEM formatted private key and certificate chain file
for the SSL connection. context also optional, can contain a
SSLContext, and is an alternative to keyfile and certfile; If it is
specified both keyfile and certfile must be None.
r& r Nc
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Turtle graphics is a popular way for introducing programming to
kids. It was part of the original Logo programming language developed
by Wally Feurzig and Seymour Papert in 1966.
Imagine a robotic turtle starting at (0, 0) in the x-y plane. After an ``import turtle``, give it
the command turtle.forward(15), and it moves (on-screen!) 15 pixels in
the direction it is facing, drawing a line as it moves. Give it the
command turtle.right(25), and it rotates in-place 25 degrees clockwise.
By combining together these and similar commands, intricate shapes and
pictures can easily be drawn.
----- turtle.py
This module is an extended reimplementation of turtle.py from the
Python standard distribution up to Python 2.5. (See: http://www.python.org)
It tries to keep the merits of turtle.py and to be (nearly) 100%
compatible with it. This means in the first place to enable the
learning programmer to use all the commands, classes and methods
interactively when using the module from within IDLE run with
the -n switch.
Roughly it has the following features added:
- Better animation of the turtle movements, especially of turning the
turtle. So the turtles can more easily be used as a visual feedback
instrument by the (beginning) programmer.
- Different turtle shapes, gif-images as turtle shapes, user defined
and user controllable turtle shapes, among them compound
(multicolored) shapes. Turtle shapes can be stretched and tilted, which
makes turtles very versatile geometrical objects.
- Fine control over turtle movement and screen updates via delay(),
and enhanced tracer() and speed() methods.
- Aliases for the most commonly used commands, like fd for forward etc.,
following the early Logo traditions. This reduces the boring work of
typing long sequences of commands, which often occur in a natural way
when kids try to program fancy pictures on their first encounter with
turtle graphics.
- Turtles now have an undo()-method with configurable undo-buffer.
- Some simple commands/methods for creating event driven programs
(mouse-, key-, timer-events). Especially useful for programming games.
- A scrollable Canvas class. The default scrollable Canvas can be
extended interactively as needed while playing around with the turtle(s).
- A TurtleScreen class with methods controlling background color or
background image, window and canvas size and other properties of the
TurtleScreen.
- There is a method, setworldcoordinates(), to install a user defined
coordinate-system for the TurtleScreen.
- The implementation uses a 2-vector class named Vec2D, derived from tuple.
This class is public, so it can be imported by the application programmer,
which makes certain types of computations very natural and compact.
- Appearance of the TurtleScreen and the Turtles at startup/import can be
configured by means of a turtle.cfg configuration file.
The default configuration mimics the appearance of the old turtle module.
- If configured appropriately the module reads in docstrings from a docstring
dictionary in some different language, supplied separately and replaces
the English ones by those read in. There is a utility function
write_docstringdict() to write a dictionary with the original (English)
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Nz<Button%s-ButtonRelease>c s: �j �| j��j �j �| j� �j }}� ||� d S r� rZ r] r^ r� r� r` w s �z-TurtleScreenBase._onrelease.<locals>.eventfunra rb r� r^ r� �
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Nz<Button%s-Motion>c sT z:�j �| j��j �j �| j� �j }}� ||� W n tk
rN Y nX d S r� )r. r[ r� r4 r\ r� r5 r� r] r^ r� r� r` � s �z*TurtleScreenBase._ondrag.<locals>.eventfunra rb r� r^ r� �_ondrag~ s zTurtleScreenBase._ondragc s@ � dkr�j �d| � n"� �fdd�}�j �d| ||� dS )aG Bind fun to mouse-click event on canvas.
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num, the number of the mouse-button defaults to 1
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NrY c s: �j �| j��j �j �| j� �j }}� ||� d S r� rZ r] r^ r� r� r` � s �z1TurtleScreenBase._onscreenclick.<locals>.eventfun�r. r r )r� r_ rc rd r` r� r^ r� �_onscreenclick� s z TurtleScreenBase._onscreenclickc s> � dkr | j �d| d� n � fdd�}| j �d| |� dS )z`Bind fun to key-release event of key.
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_onkeyrelease� s z TurtleScreenBase._onkeyreleasec sn � dkr4|dkr | j �dd� qj| j �d| d� n6� fdd�}|dkrX| j �d|� n| j �d| |� dS )z�If key is given, bind fun to key-press event of key.
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Nz
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[(0.0, 9.9999999999999982), (0.0, -9.9999999999999982),
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zTurtleScreenBase._rescalec C sz t | jt�s| j| jfS || kr6| kr6dkrJn n| jj| jjfS |dk rX|| _|dk rf|| _| j�|||� dS )zaResize the canvas the turtles are drawing on. Does
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N)r� r. r r� r� r` r r� r� r� �_resize s "zTurtleScreenBase._resizec C s@ | j �� }|dkr | j d }| j �� }|dkr8| j d }||fS )z; Return the width and height of the turtle window.
r� rz r� )r. r r )r� rz r� r� r� r� � _window_size s
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No argument.
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N)r. Ztkr r� r� r� r� r s
zTurtleScreenBase.mainloopc C s t j||| jd�S )a� Pop up a dialog window for input of a string.
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zTurtleScreenBase.textinputc C s t j|||||| jd�S )a� Pop up a dialog window for input of a number.
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default: default value
minval: minimum value for input
maxval: maximum value for input
The number input must be in the range minval .. maxval if these are
given. If not, a hint is issued and the dialog remains open for
correction. Return the number input.
If the dialog is canceled, return None.
Example (for a TurtleScreen instance named screen):
>>> screen.numinput("Poker", "Your stakes:", 1000, minval=10, maxval=10000)
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�zTurtleScreenBase.numinput)NNNF)NNNF)N)r� N)r� N)r� N)r� N)N)NNN)NNN)%r� r� r� r� r0 r2 r� r: rC rD rE rI rJ rM rO rP rX re rf rg ri rm rn ro rr ru rw rx ry r� r� r� r� r� r r( r r� r� r� r� r, � sT
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r, c @ s e Zd ZdZdS )r� z�Will be raised in TurtleScreen.update, if _RUNNING becomes False.
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N�r� r� r� r� r� r� r� r� r� Y s c @ s e Zd ZdZdS )�TurtleGraphicsErrorz Some TurtleGraphics Error
Nr� r� r� r� r� r� b s r� c @ s$ e Zd ZdZddd�Zddd�ZdS ) r z�Data structure modeling shapes.
attribute _type is one of "polygon", "image", "compound"
attribute _data is - depending on _type a poygon-tuple,
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Nc C sz || _ |dkr"t|t�rpt|�}nN|dkrVt|t�rp|�� �d�rpt|�rpt� |�}n|dkrdg }n t
d| ��|| _ d S )N�polygonrt �.gif�compoundzThere is no shape type %s) ry r� r� r� r� �lower�endswithr r r2 r� �_data)r� Ztype_�datar� r� r� r� n s
zShape.__init__c C s: | j dkrtd| j ��|dkr$|}| j�|||g� dS )a- Add component to a shape of type compound.
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fill is the fillcolor of the component,
outline is the outline color of the component.
call (for a Shapeobject namend s):
-- s.addcomponent(((0,0), (10,10), (-10,10)), "red", "blue")
Example:
>>> poly = ((0,0),(10,-5),(0,10),(-10,-5))
>>> s = Shape("compound")
>>> s.addcomponent(poly, "red", "blue")
>>> # .. add more components and then use register_shape()
r� z Cannot add component to %s ShapeN)ry r� r� r> )r� �polyr" r9 r� r� r� � addcomponent~ s
�zShape.addcomponent)N)N)r� r� r� r� r� r� r� r� r� r� r g s
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� Zdd� Z dS )�Tbufferz5Ring buffer used as undobuffer for RawTurtle objects.r� c C s$ || _ d gg| | _d| _d| _d S )Nr� F)�bufsize�buffer�ptr�cumulate)r� r� r� r� r� r� � s zTbuffer.__init__Nc C sD |d kr&t | j�D ]}d g| j|< qn|| _d gg| | _d| _d S )Nr� )r r� r� r� )r� r� r| r� r� r� r` � s z
Tbuffer.resetc C sF | j dkrB| js0| jd | j | _|| j| j< n| j| j �|� d S r� )r� r� r� r� r> rG r� r� r� �push� s
z Tbuffer.pushc C sJ | j dkrF| j| j }|d kr"d S d g| j| j< | jd | j | _|S d S r� )r� r� r� rG r� r� r� �pop� s
z Tbuffer.popc C s | j | j�d g� S r� )r� r� �countr� r� r� r� � nr_of_items� s zTbuffer.nr_of_itemsc C s t | j�d t | j� S )N� )r� r� r� r� r� r� r� r� � s zTbuffer.__repr__)r� )N)
r� r� r� r� r� r` r� r� r� r� r� r� r� r� r� � s
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Z#eZ$d
S )Hr z�Provides screen oriented methods like setbg etc.
Only relies upon the methods of TurtleScreenBase and NOT
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which is Tkinter in this case.
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zTurtleScreen.__init__c C s� t d | _t d | _| �d� | �d�| _d| _d| _d| _g | _ | �
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S ) aq Delete all drawings and all turtles from the TurtleScreen.
No argument.
Reset empty TurtleScreen to its initial state: white background,
no backgroundimage, no eventbindings and tracing on.
Example (for a TurtleScreen instance named screen):
>>> screen.clear()
Note: this method is not available as function.
r r �allr� r� r� r r� )r� r� � N)r� r� r� rI ru �_bgpic�
_bgpicname�_tracing�_updatecounter�_turtlesr rR r r� r r �_pen)r� �btnr� r� r� r� r5 � s
zTurtleScreen.clearNc C s| |dkr| j S |�� }|dkr*td| ��|| _ |dkrp| �| j d | j d | jd | jd � d | _| _| �� dS )ah Set turtle-mode ('standard', 'logo' or 'world') and perform reset.
Optional argument:
mode -- one of the strings 'standard', 'logo' or 'world'
Mode 'standard' is compatible with turtle.py.
Mode 'logo' is compatible with most Logo-Turtle-Graphics.
Mode 'world' uses userdefined 'worldcoordinates'. *Attention*: in
this mode angles appear distorted if x/y unit-ratio doesn't equal 1.
If mode is not given, return the current mode.
Mode Initial turtle heading positive angles
------------|-------------------------|-------------------
'standard' to the right (east) counterclockwise
'logo' upward (north) clockwise
Examples:
>>> mode('logo') # resets turtle heading to north
>>> mode()
'logo'
N�r� �logo�worldzNo turtle-graphics-mode %s)r� r� r� r� ) r� r� r� r� r� r� r4 r5 r` �r� r r� r� r� r s � zTurtleScreen.modec C s� | � � dkr| � d� t|| �}t|| �}| �� \}}| �|d |d � | j| j } }
| j| | _| j| | _|| j } | | j } | j| }
| j| }| �| | |
|� | � | j| | j|
� | �
� dS )as Set up a user defined coordinate-system.
Arguments:
llx -- a number, x-coordinate of lower left corner of canvas
lly -- a number, y-coordinate of lower left corner of canvas
urx -- a number, x-coordinate of upper right corner of canvas
ury -- a number, y-coordinate of upper right corner of canvas
Set up user coodinat-system and switch to mode 'world' if necessary.
This performs a screen.reset. If mode 'world' is already active,
all drawings are redrawn according to the new coordinates.
But ATTENTION: in user-defined coordinatesystems angles may appear
distorted. (see Screen.mode())
Example (for a TurtleScreen instance named screen):
>>> screen.setworldcoordinates(-10,-0.5,50,1.5)
>>> for _ in range(36):
... left(10)
... forward(0.5)
r� � N) r r� r� r% r4 r5 r� r� r� r� r, )r� ZllxZllyZurxZuryZxspanZyspanZwxZwyZ oldxscaleZ oldyscaler� r� r� r� r� r� r� r' - s
z TurtleScreen.setworldcoordinatesc C sT |dkr2|� � �d�r(td| �|��}qFtd��nt|t�rFtd|�}|| j|< dS )a� Adds a turtle shape to TurtleScreen's shapelist.
Arguments:
(1) name is the name of a gif-file and shape is None.
Installs the corresponding image shape.
!! Image-shapes DO NOT rotate when turning the turtle,
!! so they do not display the heading of the turtle!
(2) name is an arbitrary string and shape is a tuple
of pairs of coordinates. Installs the corresponding
polygon shape
(3) name is an arbitrary string and shape is a
(compound) Shape object. Installs the corresponding
compound shape.
To use a shape, you have to issue the command shape(shapename).
call: register_shape("turtle.gif")
--or: register_shape("tri", ((0,0), (10,10), (-10,10)))
Example (for a TurtleScreen instance named screen):
>>> screen.register_shape("triangle", ((5,-3),(0,5),(-5,-3)))
Nr� rt z;Bad arguments for register_shape.
Use help(register_shape)r� )r� r� r r2 r� r� r� r� )r� �namerk r� r� r� r# T s
zTurtleScreen.register_shapec C s t |�dkr|d }t|t�rD| �|�s0|dkr4|S tdt|� ��z|\}}}W n( ttfk
rz tdt|� ��Y nX | jdkr�dd� |||fD �\}}}d| kr�d kr�n n.d| kr�d kr�n nd| kr�d ks�n td
t|� ��d |||f S ) a Return color string corresponding to args.
Argument may be a string or a tuple of three
numbers corresponding to actual colormode,
i.e. in the range 0<=n<=colormode.
If the argument doesn't represent a color,
an error is raised.
r� r r� zbad color string: %s�bad color arguments: %sr� c S s g | ]}t d | ��qS �g �o@��round�r{ r� r� r� r� r~ � s z*TurtleScreen._colorstr.<locals>.<listcomp>� �bad color sequence: %s�
#%02x%02x%02x)r� r� r� rO r� � TypeErrorr� r� )r� r9 r� �g�br� r� r� � _colorstrw s
FzTurtleScreen._colorstrc sx � � d�s� S t� �dkr.� fdd�dD �}n4t� �dkrV� fdd�� dd � D �}n td � ��t�fd
d �|D ��S ) Nr� r� c s" g | ]}t � ||d � d��qS )r� r� �r� rz ��cstrr� r� r~ � s z'TurtleScreen._color.<locals>.<listcomp>)r� r� r� r� c s g | ]}d t � | d � �qS )r� r� )r{ r7 r� r� r� r~ � s r� zbad colorstring: %sc 3 s | ]}|� j d V qdS )r� N)r� )r{ r� r� r� r� � <genexpr>� s z&TurtleScreen._color.<locals>.<genexpr>)r� r� r� r� )r� r� rB r� )r� r� r� �_color� s
zTurtleScreen._colorc C s8 |dkr| j S |dkr"t|�| _ n|dkr4t|�| _ dS )aq Return the colormode or set it to 1.0 or 255.
Optional argument:
cmode -- one of the values 1.0 or 255
r, g, b values of colortriples have to be in range 0..cmode.
Example (for a TurtleScreen instance named screen):
>>> screen.colormode()
1.0
>>> screen.colormode(255)
>>> pencolor(240,160,80)
Nr� r� )r� r� r� )r� Zcmoder� r� r� r � s zTurtleScreen.colormodec C s$ | j D ]}|�| j� |�� qdS )z�Reset all Turtles on the Screen to their initial state.
No argument.
Example (for a TurtleScreen instance named screen):
>>> screen.reset()
N)r� �_setmoder� r` )r� r� r� r� r� r` � s
zTurtleScreen.resetc C s | j S )z�Return the list of turtles on the screen.
Example (for a TurtleScreen instance named screen):
>>> screen.turtles()
[<turtle.Turtle object at 0x00E11FB0>]
)r� r� r� r� r� r+ � s zTurtleScreen.turtlesc G s4 |r| � |�}nd}| �|�}|dk r0| �|�}|S )a� Set or return backgroundcolor of the TurtleScreen.
Arguments (if given): a color string or three numbers
in the range 0..colormode or a 3-tuple of such numbers.
Example (for a TurtleScreen instance named screen):
>>> screen.bgcolor("orange")
>>> screen.bgcolor()
'orange'
>>> screen.bgcolor(0.5,0,0.5)
>>> screen.bgcolor()
'#800080'
N)r� rP r� �r� r r9 r� r� r� r � s
zTurtleScreen.bgcolorc C sB |dkr| j S t|�| _ d| _|dk r0t|�| _| j r>| �� dS )ae Turns turtle animation on/off and set delay for update drawings.
Optional arguments:
n -- nonnegative integer
delay -- nonnegative integer
If n is given, only each n-th regular screen update is really performed.
(Can be used to accelerate the drawing of complex graphics.)
Second arguments sets delay value (see RawTurtle.delay())
Example (for a TurtleScreen instance named screen):
>>> screen.tracer(8, 25)
>>> dist = 2
>>> for i in range(200):
... fd(dist)
... rt(90)
... dist += 2
Nr )r� r� r� r� r, )r� �nr r� r� r� r* � s
zTurtleScreen.tracerc C s |dkr| j S t|�| _ dS )z� Return or set the drawing delay in milliseconds.
Optional argument:
delay -- positive integer
Example (for a TurtleScreen instance named screen):
>>> screen.delay(15)
>>> screen.delay()
15
N)r� r� rL r� r� r� r � s zTurtleScreen.delayc C s< t jsdt _t�| jdkr8| jd7 _| j| j; _dS )zIncrement update counter.Tr r� N)r �_RUNNINGr� r� r� r� r� r� r� �
_incrementudc s
zTurtleScreen._incrementudcc C s< | j }d| _ | �� D ]}|�� |�� q|| _ | �� dS )z'Perform a TurtleScreen update.
TN)r� r+ � _update_data� _drawturtlerJ )r� �tracingrq r� r� r� r, s
zTurtleScreen.updatec C s | � � d S )z� Return the width of the turtle window.
Example (for a TurtleScreen instance named screen):
>>> screen.window_width()
640
r �r� r� r� r� r� r. s zTurtleScreen.window_widthc C s | � � d S )z� Return the height of the turtle window.
Example (for a TurtleScreen instance named screen):
>>> screen.window_height()
480
r� r� r� r� r� r� r- & s zTurtleScreen.window_heightc C s | j S )z�Return the Canvas of this TurtleScreen.
No argument.
Example (for a Screen instance named screen):
>>> cv = screen.getcanvas()
>>> cv
<turtle.ScrolledCanvas instance at 0x010742D8>
)r. r� r� r� r� r / s
zTurtleScreen.getcanvasc C s t | j�� �S )z�Return a list of names of all currently available turtle shapes.
No argument.
Example (for a TurtleScreen instance named screen):
>>> screen.getshapes()
['arrow', 'blank', 'circle', ... , 'turtle']
)�sortedr� r� r� r� r� r� r ; s zTurtleScreen.getshapesr� c C s | � |||� dS )a� Bind fun to mouse-click event on canvas.
Arguments:
fun -- a function with two arguments, the coordinates of the
clicked point on the canvas.
btn -- the number of the mouse-button, defaults to 1
Example (for a TurtleScreen instance named screen)
>>> screen.onclick(goto)
>>> # Subsequently clicking into the TurtleScreen will
>>> # make the turtle move to the clicked point.
>>> screen.onclick(None)
N)ri �r� r_ r� rd r� r� r� rR F s zTurtleScreen.onclickc C sF |dkr || j kr6| j �|� n|| j kr6| j �|� | �||� dS )am Bind fun to key-release event of key.
Arguments:
fun -- a function with no arguments
key -- a string: key (e.g. "a") or key-symbol (e.g. "space")
In order to be able to register key-events, TurtleScreen
must have focus. (See method listen.)
Example (for a TurtleScreen instance named screen):
>>> def f():
... fd(50)
... lt(60)
...
>>> screen.onkey(f, "Up")
>>> screen.listen()
Subsequently the turtle can be moved by repeatedly pressing
the up-arrow key, consequently drawing a hexagon
N)r� �remover> rm �r� r_ r� r� r� r� r W s
zTurtleScreen.onkeyc C sN |dkr || j kr>| j �|� n |dk r>|| j kr>| j �|� | �||� dS )a Bind fun to key-press event of key if key is given,
or to any key-press-event if no key is given.
Arguments:
fun -- a function with no arguments
key -- a string: key (e.g. "a") or key-symbol (e.g. "space")
In order to be able to register key-events, TurtleScreen
must have focus. (See method listen.)
Example (for a TurtleScreen instance named screen
and a Turtle instance named turtle):
>>> def f():
... fd(50)
... lt(60)
...
>>> screen.onkeypress(f, "Up")
>>> screen.listen()
Subsequently the turtle can be moved by repeatedly pressing
the up-arrow key, or by keeping pressed the up-arrow key.
consequently drawing a hexagon.
N)r� r� r> rn r� r� r� r� r u s
zTurtleScreen.onkeypressc C s | � � dS )a Set focus on TurtleScreen (in order to collect key-events)
No arguments.
Dummy arguments are provided in order
to be able to pass listen to the onclick method.
Example (for a TurtleScreen instance named screen):
>>> screen.listen()
N)ro )r� �xdummy�ydummyr� r� r� r � s
zTurtleScreen.listenr c C s | � ||� dS )a� Install a timer, which calls fun after t milliseconds.
Arguments:
fun -- a function with no arguments.
t -- a number >= 0
Example (for a TurtleScreen instance named screen):
>>> running = True
>>> def f():
... if running:
... fd(50)
... lt(60)
... screen.ontimer(f, 250)
...
>>> f() # makes the turtle marching around
>>> running = False
N)rr rp r� r� r� r" � s zTurtleScreen.ontimerc C sF |dkr| j S || jkr(| �|�| j|< | �| j| j| � || _ dS )aF Set background image or return name of current backgroundimage.
Optional argument:
picname -- a string, name of a gif-file or "nopic".
If picname is a filename, set the corresponding image as background.
If picname is "nopic", delete backgroundimage, if present.
If picname is None, return the filename of the current backgroundimage.
Example (for a TurtleScreen instance named screen):
>>> screen.bgpic()
'nopic'
>>> screen.bgpic("landscape.gif")
>>> screen.bgpic()
'landscape.gif'
N)r� r� r2 rx r� )r� Zpicnamer� r� r� r � s
zTurtleScreen.bgpicc C s | � |||�S )a� Resize the canvas the turtles are drawing on.
Optional arguments:
canvwidth -- positive integer, new width of canvas in pixels
canvheight -- positive integer, new height of canvas in pixels
bg -- colorstring or color-tuple, new backgroundcolor
If no arguments are given, return current (canvaswidth, canvasheight)
Do not alter the drawing window. To observe hidden parts of
the canvas use the scrollbars. (Can make visible those parts
of a drawing, which were outside the canvas before!)
Example (for a Turtle instance named turtle):
>>> turtle.screensize(2000,1500)
>>> # e.g. to search for an erroneously escaped turtle ;-)
)r� r r� r� r� r% � s zTurtleScreen.screensize)N)N)N)NN)N)r� N)N)NN)r )N)NNN)%r� r� r� r� r� r� r� r5 r r' r# r� r� r r` r+ r r* r r� r, r. r- r r rR r r r r" r r% r! r$ r r r r� r� r� r� r � sH �
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dd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zd$d%� Zd&d'� Zd(d)� ZdDd*d+�Zd,d-� Zd.d/� Zd0d1� Z dEd2d3�Z dFd4d5�Z d6d7� Z d8d9� Z dGd:d;�Z!dHd<d=�Z"dId>d?�Z#dJd@dA�Z$eZ%eZ&eZ'eZ(eZ)eZ*eZ+eZ,e Z-d S )K�
TNavigatorzRNavigation part of the RawTurtle.
Implements methods for turtle movement.
r� � )r� r� r� r� r r� c C sB | j | _| j| _|| _d | _| �� d | _| �|� t� | � d S r� )
�DEFAULT_ANGLEOFFSET� _angleOffset�DEFAULT_ANGLEORIENT� _angleOrientr� �
undobufferr: r� r� r` r� r� r� r� r� � s
zTNavigator.__init__c C s t dd�| _tj| j | _dS )zXreset turtle to its initial values
Will be overwritten by parent class
r� N)r � _positionr� �START_ORIENTATIONr� �_orientr� r� r� r� r` � s zTNavigator.resetNc C sL |dkr| j S |dkrdS || _ |dkr6d| _d| _n| jd | _d| _dS )z:Set turtle-mode to 'standard', 'world' or 'logo'.
Nr� )r� r� r r� � @r� )r� r r � _fullcircler� r� r� r� r� s zTNavigator._setmodec C s0 || _ d| | _| jdkr"d| _n
|d | _dS )z+Helper function for degrees() and radians()ih r� r r N)r �
_degreesPerAUr� r �r� Z
fullcircler� r� r� �_setDegreesPerAU s
zTNavigator._setDegreesPerAU� �v@c C s | � |� dS )a> Set angle measurement units to degrees.
Optional argument:
fullcircle - a number
Set angle measurement units, i. e. set number
of 'degrees' for a full circle. Default value is
360 degrees.
Example (for a Turtle instance named turtle):
>>> turtle.left(90)
>>> turtle.heading()
90
Change angle measurement unit to grad (also known as gon,
grade, or gradian and equals 1/100-th of the right angle.)
>>> turtle.degrees(400.0)
>>> turtle.heading()
100
N)r r
r� r� r� r: s zTNavigator.degreesc C s | � dtj � dS )a Set the angle measurement units to radians.
No arguments.
Example (for a Turtle instance named turtle):
>>> turtle.heading()
90
>>> turtle.radians()
>>> turtle.heading()
1.5707963267948966
r� N)r r� r� r� r� r� r� r^ 5 s zTNavigator.radiansc C s | j | j| }| �|� dS )z)move turtle forward by specified distanceN)r r �_goto)r� r; Zender� r� r� �_goC s zTNavigator._goc C s || j 9 }| j�|�| _dS )z=Turn turtle counterclockwise by specified angle if angle > 0.N)r r r� �r� r� r� r� r� �_rotateH s
zTNavigator._rotatec C s
|| _ dS )z move turtle to position end.N�r )r� �endr� r� r� r
M s zTNavigator._gotoc C s | � |� dS )a Move the turtle forward by the specified distance.
Aliases: forward | fd
Argument:
distance -- a number (integer or float)
Move the turtle forward by the specified distance, in the direction
the turtle is headed.
Example (for a Turtle instance named turtle):
>>> turtle.position()
(0.00, 0.00)
>>> turtle.forward(25)
>>> turtle.position()
(25.00,0.00)
>>> turtle.forward(-75)
>>> turtle.position()
(-50.00,0.00)
N�r �r� r; r� r� r� rC Q s zTNavigator.forwardc C s | � | � dS )a� Move the turtle backward by distance.
Aliases: back | backward | bk
Argument:
distance -- a number
Move the turtle backward by distance, opposite to the direction the
turtle is headed. Do not change the turtle's heading.
Example (for a Turtle instance named turtle):
>>> turtle.position()
(0.00, 0.00)
>>> turtle.backward(30)
>>> turtle.position()
(-30.00, 0.00)
Nr r r� r� r� r/ h s zTNavigator.backc C s | � | � dS )a� Turn turtle right by angle units.
Aliases: right | rt
Argument:
angle -- a number (integer or float)
Turn turtle right by angle units. (Units are by default degrees,
but can be set via the degrees() and radians() functions.)
Angle orientation depends on mode. (See this.)
Example (for a Turtle instance named turtle):
>>> turtle.heading()
22.0
>>> turtle.right(45)
>>> turtle.heading()
337.0
N�r r r� r� r� r_ | s zTNavigator.rightc C s | � |� dS )a� Turn turtle left by angle units.
Aliases: left | lt
Argument:
angle -- a number (integer or float)
Turn turtle left by angle units. (Units are by default degrees,
but can be set via the degrees() and radians() functions.)
Angle orientation depends on mode. (See this.)
Example (for a Turtle instance named turtle):
>>> turtle.heading()
22.0
>>> turtle.left(45)
>>> turtle.heading()
67.0
Nr r r� r� r� rP � s zTNavigator.leftc C s | j S )z�Return the turtle's current location (x,y), as a Vec2D-vector.
Aliases: pos | position
No arguments.
Example (for a Turtle instance named turtle):
>>> turtle.pos()
(0.00, 240.00)
r r� r� r� r� r[ � s zTNavigator.posc C s
| j d S )z� Return the turtle's x coordinate.
No arguments.
Example (for a Turtle instance named turtle):
>>> reset()
>>> turtle.left(60)
>>> turtle.forward(100)
>>> print turtle.xcor()
50.0
r r r� r� r� r� r| � s zTNavigator.xcorc C s
| j d S )a Return the turtle's y coordinate
---
No arguments.
Example (for a Turtle instance named turtle):
>>> reset()
>>> turtle.left(60)
>>> turtle.forward(100)
>>> print turtle.ycor()
86.6025403784
r� r r� r� r� r� r} � s zTNavigator.ycorc C s, |dkr| � t|� � n| � t||�� dS )at Move turtle to an absolute position.
Aliases: setpos | setposition | goto:
Arguments:
x -- a number or a pair/vector of numbers
y -- a number None
call: goto(x, y) # two coordinates
--or: goto((x, y)) # a pair (tuple) of coordinates
--or: goto(vec) # e.g. as returned by pos()
Move turtle to an absolute position. If the pen is down,
a line will be drawn. The turtle's orientation does not change.
Example (for a Turtle instance named turtle):
>>> tp = turtle.pos()
>>> tp
(0.00, 0.00)
>>> turtle.setpos(60,30)
>>> turtle.pos()
(60.00,30.00)
>>> turtle.setpos((20,80))
>>> turtle.pos()
(20.00,80.00)
>>> turtle.setpos(tp)
>>> turtle.pos()
(0.00,0.00)
N)r
r )r� r� r� r� r� r� rI � s zTNavigator.gotoc C s | � dd� | �d� dS )a$ Move turtle to the origin - coordinates (0,0).
No arguments.
Move turtle to the origin - coordinates (0,0) and set its
heading to its start-orientation (which depends on mode).
Example (for a Turtle instance named turtle):
>>> turtle.home()
r N)rI rd r� r� r� r� rL � s zTNavigator.homec C s | � t|| jd �� dS )a� Set the turtle's first coordinate to x
Argument:
x -- a number (integer or float)
Set the turtle's first coordinate to x, leave second coordinate
unchanged.
Example (for a Turtle instance named turtle):
>>> turtle.position()
(0.00, 240.00)
>>> turtle.setx(10)
>>> turtle.position()
(10.00, 240.00)
r� N�r
r r )r� r� r� r� r� ri s zTNavigator.setxc C s | � t| jd |�� dS )a� Set the turtle's second coordinate to y
Argument:
y -- a number (integer or float)
Set the turtle's first coordinate to x, second coordinate remains
unchanged.
Example (for a Turtle instance named turtle):
>>> turtle.position()
(0.00, 40.00)
>>> turtle.sety(-10)
>>> turtle.position()
(0.00, -10.00)
r Nr )r� r� r� r� r� rj s zTNavigator.setyc C sT |dk rt ||�}t|t �r"|}n$t|t�r6t |� }nt|t�rF|j}t|| j �S )a� Return the distance from the turtle to (x,y) in turtle step units.
Arguments:
x -- a number or a pair/vector of numbers or a turtle instance
y -- a number None None
call: distance(x, y) # two coordinates
--or: distance((x, y)) # a pair (tuple) of coordinates
--or: distance(vec) # e.g. as returned by pos()
--or: distance(mypen) # where mypen is another turtle
Example (for a Turtle instance named turtle):
>>> turtle.pos()
(0.00, 0.00)
>>> turtle.distance(30,40)
50.0
>>> pen = Turtle()
>>> pen.forward(77)
>>> turtle.distance(pen)
77.0
N)r r� r� r� r �abs)r� r� r� r[ r� r� r� r; % s
zTNavigator.distancec C s� |dk rt ||�}t|t �r"|}n$t|t�r6t |� }nt|t�rF|j}|| j \}}tt�||�d tj d�d }|| j }| j
| j | | j S )aC Return the angle of the line from the turtle's position to (x, y).
Arguments:
x -- a number or a pair/vector of numbers or a turtle instance
y -- a number None None
call: distance(x, y) # two coordinates
--or: distance((x, y)) # a pair (tuple) of coordinates
--or: distance(vec) # e.g. as returned by pos()
--or: distance(mypen) # where mypen is another turtle
Return the angle, between the line from turtle-position to position
specified by x, y and the turtle's start orientation. (Depends on
modes - "standard" or "logo")
Example (for a Turtle instance named turtle):
>>> turtle.pos()
(10.00, 10.00)
>>> turtle.towards(0,0)
225.0
Nr� r� r )
r r� r� r� r r� r� �atan2r� r r r r )r� r� r� r[ �resultr� r� r� ru E s
zTNavigator.towardsc C sJ | j \}}tt�||�d tj d�d }|| j }| j| j| | j S )z� Return the turtle's current heading.
No arguments.
Example (for a Turtle instance named turtle):
>>> turtle.left(67)
>>> turtle.heading()
67.0
r� r� r ) r r� r� r r� r r r r )r� r� r� r r� r� r� rJ h s
zTNavigator.headingc C s> || � � | j }| j}||d | |d }| �|� dS )a� Set the orientation of the turtle to to_angle.
Aliases: setheading | seth
Argument:
to_angle -- a number (integer or float)
Set the orientation of the turtle to to_angle.
Here are some common directions in degrees:
standard - mode: logo-mode:
-------------------|--------------------
0 - east 0 - north
90 - north 90 - east
180 - west 180 - south
270 - south 270 - west
Example (for a Turtle instance named turtle):
>>> turtle.setheading(90)
>>> turtle.heading()
90
� @N)rJ r r r )r� Zto_angler� Zfullr� r� r� rd w s zTNavigator.setheadingc C sp | j r | j �dg� d| j _| �� }|dkr2| j}|dkrjt|�| j }dttdt|�d d�| � }d| | }d | }d
| t� |tj
d | j � }|d k r�| | | }}}| � � } | �
� }
|d kr�| � d d � n
| �d � | �|� t|�D ].} | �|� | �|� | �d � | �|� �q | �| � |d k�rR| � | |
� | �|� | j �rld
| j _dS )a� Draw a circle with given radius.
Arguments:
radius -- a number
extent (optional) -- a number
steps (optional) -- an integer
Draw a circle with given radius. The center is radius units left
of the turtle; extent - an angle - determines which part of the
circle is drawn. If extent is not given, draw the entire circle.
If extent is not a full circle, one endpoint of the arc is the
current pen position. Draw the arc in counterclockwise direction
if radius is positive, otherwise in clockwise direction. Finally
the direction of the turtle is changed by the amount of extent.
As the circle is approximated by an inscribed regular polygon,
steps determines the number of steps to use. If not given,
it will be calculated automatically. Maybe used to draw regular
polygons.
call: circle(radius) # full circle
--or: circle(radius, extent) # arc
--or: circle(radius, extent, steps)
--or: circle(radius, steps=6) # 6-sided polygon
Example (for a Turtle instance named turtle):
>>> turtle.circle(50)
>>> turtle.circle(120, 180) # semicircle
�seqTNr� � g @g �M@r� r� r r� r F)r r� r� rp r r r� �minr� r� r� r �_tracerrM r r r ) r� �radiusZextent�stepsrp Zfracr6 Zw2�lZtrZdlr| r� r� r� r4 � s> " "
zTNavigator.circlec C s dS �z/dummy method - to be overwritten by child classNr� )r� r� r� r� r� rp � s zTNavigator.speedc C s dS r" r� )r� �ar� r� r� r� r � s zTNavigator._tracerc C s dS r" r� )r� r� r� r� r� rM � s zTNavigator._delay)N)r )N)N)N)NN)r )NN)N).r� r� r� r� r r Z DEFAULT_MODEr� r r� r` r� r r: r^ r r r
rC r/ r_ rP r[ r| r} rI rL ri rj r; ru rJ rd r4 rp r rM r@ r3 r0 rb rQ r\ re rf rc r� r� r� r� r� � sZ �
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r� c @ s� e Zd ZdZed fdd�Zed ed fdd�Zd.d
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Ze
Z eZ eZ d S )4�TPenzFDrawing part of the RawTurtle.
Implements drawing properties.
ra c C s || _ d | _t�| � d S r� )� _resizemoder r$ �_reset)r� ra r� r� r� r� � s z
TPen.__init__rW rA c C sF d| _ d| _|| _|| _d| _d| _d| _d| _d| _d| _ d| _
d S )Nr� Tr� )r� r� r� )r� r� r� r� ) �_pensize�_shown� _pencolor�
_fillcolor�_drawing�_speed�_stretchfactor� _shearfactor�_tilt� _shapetrafo�
_outlinewidth)r� rW rA r� r� r� r& � s z TPen._resetNc C s. |dkr| j S |�� }|dkr*| j|d� dS )az Set resizemode to one of the values: "auto", "user", "noresize".
(Optional) Argument:
rmode -- one of the strings "auto", "user", "noresize"
Different resizemodes have the following effects:
- "auto" adapts the appearance of the turtle
corresponding to the value of pensize.
- "user" adapts the appearance of the turtle according to the
values of stretchfactor and outlinewidth (outline),
which are set by shapesize()
- "noresize" no adaption of the turtle's appearance takes place.
If no argument is given, return current resizemode.
resizemode("user") is called by a call of shapesize with arguments.
Examples (for a Turtle instance named turtle):
>>> turtle.resizemode("noresize")
>>> turtle.resizemode()
'noresize'
N)�auto�userr� �ra )r% r� rV )r� Zrmoder� r� r� ra � s
zTPen.resizemodec C s |dkr| j S | j|d� dS )a! Set or return the line thickness.
Aliases: pensize | width
Argument:
width -- positive number
Set the line thickness to width or return it. If resizemode is set
to "auto" and turtleshape is a polygon, that polygon is drawn with
the same line thickness. If no argument is given, current pensize
is returned.
Example (for a Turtle instance named turtle):
>>> turtle.pensize()
1
>>> turtle.pensize(10) # from here on lines of width 10 are drawn
N)rY )r' rV )r� rz r� r� r� rY s z TPen.pensizec C s | j s
dS | jdd� dS )z�Pull the pen up -- no drawing when moving.
Aliases: penup | pu | up
No argument
Example (for a Turtle instance named turtle):
>>> turtle.penup()
NF�rX �r+ rV r� r� r� r� rZ 0 s
z
TPen.penupc C s | j r
dS | jdd� dS )z�Pull the pen down -- drawing when moving.
Aliases: pendown | pd | down
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.pendown()
NTr5 r6 r� r� r� r� rX > s
z TPen.pendownc C s | j S )a Return True if pen is down, False if it's up.
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.penup()
>>> turtle.isdown()
False
>>> turtle.pendown()
>>> turtle.isdown()
True
)r+ r� r� r� r� rN L s
z TPen.isdownc C sj dddddd�}|dkr | j S ||kr0|| }n*d| k rDd k rVn ntt|��}nd}| j|d
� dS ) a� Return or set the turtle's speed.
Optional argument:
speed -- an integer in the range 0..10 or a speedstring (see below)
Set the turtle's speed to an integer value in the range 0 .. 10.
If no argument is given: return current speed.
If input is a number greater than 10 or smaller than 0.5,
speed is set to 0.
Speedstrings are mapped to speedvalues in the following way:
'fastest' : 0
'fast' : 10
'normal' : 6
'slow' : 3
'slowest' : 1
speeds from 1 to 10 enforce increasingly faster animation of
line drawing and turtle turning.
Attention:
speed = 0 : *no* animation takes place. forward/back makes turtle jump
and likewise left/right make the turtle turn instantly.
Example (for a Turtle instance named turtle):
>>> turtle.speed(3)
r r� r� r� r� )ZfastestZfast�normalZslowZslowestNr� g %@)rp )r, r� r� rV )r� rp Zspeedsr� r� r� rp [ s
z
TPen.speedc G s� |rht |�}|dkr"|d }}n"|dkr4|\}}n|dkrD| }}| �|�}| �|�}| j||d� n| �| j�| �| j�fS dS )a� Return or set the pencolor and fillcolor.
Arguments:
Several input formats are allowed.
They use 0, 1, 2, or 3 arguments as follows:
color()
Return the current pencolor and the current fillcolor
as a pair of color specification strings as are returned
by pencolor and fillcolor.
color(colorstring), color((r,g,b)), color(r,g,b)
inputs as in pencolor, set both, fillcolor and pencolor,
to the given value.
color(colorstring1, colorstring2),
color((r1,g1,b1), (r2,g2,b2))
equivalent to pencolor(colorstring1) and fillcolor(colorstring2)
and analogously, if the other input format is used.
If turtleshape is a polygon, outline and interior of that polygon
is drawn with the newly set colors.
For more info see: pencolor, fillcolor
Example (for a Turtle instance named turtle):
>>> turtle.color('red', 'green')
>>> turtle.color()
('red', 'green')
>>> colormode(255)
>>> color((40, 80, 120), (160, 200, 240))
>>> color()
('#285078', '#a0c8f0')
r� r r� r� )rW rA N)r� r� rV r� r) r* )r� r r! ZpcolorZfcolorr� r� r� r9 � s
z
TPen.colorc G s: |r*| � |�}|| jkr dS | j|d� n | �| j�S dS )aZ Return or set the pencolor.
Arguments:
Four input formats are allowed:
- pencolor()
Return the current pencolor as color specification string,
possibly in hex-number format (see example).
May be used as input to another color/pencolor/fillcolor call.
- pencolor(colorstring)
s is a Tk color specification string, such as "red" or "yellow"
- pencolor((r, g, b))
*a tuple* of r, g, and b, which represent, an RGB color,
and each of r, g, and b are in the range 0..colormode,
where colormode is either 1.0 or 255
- pencolor(r, g, b)
r, g, and b represent an RGB color, and each of r, g, and b
are in the range 0..colormode
If turtleshape is a polygon, the outline of that polygon is drawn
with the newly set pencolor.
Example (for a Turtle instance named turtle):
>>> turtle.pencolor('brown')
>>> tup = (0.2, 0.8, 0.55)
>>> turtle.pencolor(tup)
>>> turtle.pencolor()
'#33cc8c'
N)rW )r� r) rV r� r� r� r� r� rW � s
z
TPen.pencolorc G s: |r*| � |�}|| jkr dS | j|d� n | �| j�S dS )a] Return or set the fillcolor.
Arguments:
Four input formats are allowed:
- fillcolor()
Return the current fillcolor as color specification string,
possibly in hex-number format (see example).
May be used as input to another color/pencolor/fillcolor call.
- fillcolor(colorstring)
s is a Tk color specification string, such as "red" or "yellow"
- fillcolor((r, g, b))
*a tuple* of r, g, and b, which represent, an RGB color,
and each of r, g, and b are in the range 0..colormode,
where colormode is either 1.0 or 255
- fillcolor(r, g, b)
r, g, and b represent an RGB color, and each of r, g, and b
are in the range 0..colormode
If turtleshape is a polygon, the interior of that polygon is drawn
with the newly set fillcolor.
Example (for a Turtle instance named turtle):
>>> turtle.fillcolor('violet')
>>> col = turtle.pencolor()
>>> turtle.fillcolor(col)
>>> turtle.fillcolor(0, .5, 0)
N)rA )r� r* rV r� r� r� r� r� rA � s
zTPen.fillcolorc C s | j dd� dS )z�Makes the turtle visible.
Aliases: showturtle | st
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.hideturtle()
>>> turtle.showturtle()
T��shownN�rV r� r� r� r� ro � s zTPen.showturtlec C s | j dd� dS )aY Makes the turtle invisible.
Aliases: hideturtle | ht
No argument.
It's a good idea to do this while you're in the
middle of a complicated drawing, because hiding
the turtle speeds up the drawing observably.
Example (for a Turtle instance named turtle):
>>> turtle.hideturtle()
Fr8 Nr: r� r� r� r� rK s zTPen.hideturtlec C s | j S )z�Return True if the Turtle is shown, False if it's hidden.
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.hideturtle()
>>> print turtle.isvisible():
False
)r( r� r� r� r� rO s
zTPen.isvisiblec K s� | j | j| j| j| j| j| j| j| j| j | j
d� }|s>|s>|S t |t �rN|}ni }|�
|� i }|D ]}|| ||< qd| jr�| j�d|f� d}d|kr�| j|d kr�d}d|kr�t |d t�r�| �|d f�|d< | j|d kr�d}d|k�r| j|d k�rd}|�r| �� d|k�r&|d | _d|k�r:|d | _d|k�rN|d | _d|k�r�t |d t��r|| �|d f�|d< |d | _d |k�r�|d | _d
|k�r�|d
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| |
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|
| | f| _| �� dS )aL Return or set the pen's attributes.
Arguments:
pen -- a dictionary with some or all of the below listed keys.
**pendict -- one or more keyword-arguments with the below
listed keys as keywords.
Return or set the pen's attributes in a 'pen-dictionary'
with the following key/value pairs:
"shown" : True/False
"pendown" : True/False
"pencolor" : color-string or color-tuple
"fillcolor" : color-string or color-tuple
"pensize" : positive number
"speed" : number in range 0..10
"resizemode" : "auto" or "user" or "noresize"
"stretchfactor": (positive number, positive number)
"shearfactor": number
"outline" : positive number
"tilt" : number
This dictionary can be used as argument for a subsequent
pen()-call to restore the former pen-state. Moreover one
or more of these attributes can be provided as keyword-arguments.
This can be used to set several pen attributes in one statement.
Examples (for a Turtle instance named turtle):
>>> turtle.pen(fillcolor="black", pencolor="red", pensize=10)
>>> turtle.pen()
{'pensize': 10, 'shown': True, 'resizemode': 'auto', 'outline': 1,
'pencolor': 'red', 'pendown': True, 'fillcolor': 'black',
'stretchfactor': (1,1), 'speed': 3, 'shearfactor': 0.0}
>>> penstate=turtle.pen()
>>> turtle.color("yellow","")
>>> turtle.penup()
>>> turtle.pen()
{'pensize': 10, 'shown': True, 'resizemode': 'auto', 'outline': 1,
'pencolor': 'yellow', 'pendown': False, 'fillcolor': '',
'stretchfactor': (1,1), 'speed': 3, 'shearfactor': 0.0}
>>> p.pen(penstate, fillcolor="green")
>>> p.pen()
{'pensize': 10, 'shown': True, 'resizemode': 'auto', 'outline': 1,
'pencolor': 'red', 'pendown': True, 'fillcolor': 'green',
'stretchfactor': (1,1), 'speed': 3, 'shearfactor': 0.0}
) r9 rX rW rA rY rp ra �
stretchfactorrn r9 rs rV FrX TrW rY rA rp ra r; rn r9 r9 rs N)r( r+ r) r* r' r, r% r- r. r1 r/ r� �dictr, r r� r� r� �_newLiner� r� r� r� r� r0 rJ )r� rV ZpendictZ_pd�pZ_p_bufr� ZnewLineZsfZscxZscyZshf�sa�car� r� r� rV ! s� /�
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r$ c @ s e Zd ZdZdd� Zdd� ZdS )� _TurtleImagez6Helper class: Datatype to store Turtle attributes
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shapeIndexr� r� r� r� � s z_TurtleImage.__init__c s� | j � || _| jd kr*� j| jkr2n nd S | jd krP� j| jkrXn nd S | jdkrp� �| j� n | jdkr�| jD ]}� �|� q�� j| j| _| jdkr�� �� | _nF| jdkrԈ �� jd j�| _n&| jdkr�� fdd�� j| jD �| _d S )Nr� rt )rt r� r� r/ c s g | ] }� � � �qS r� �r: �r{ rH �r� r� r� r~ � s z*_TurtleImage._setshape.<locals>.<listcomp>) r� rD ry r� rI �_itemr: ru r� )r� rD rH r� rG r� rC � s( ""
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� Z dd� Z
dd� Z dd� Z dd� Z
dmdd�Zdd� Zdd� Zd d � Zd d � Zdnd d!�Zdod"d#�Zdpd$d%�Zd&d'� Zdqd(d)�Zd*d+� Zdrd,d-�Zd.d/� Zd0d1� Zdsd3d4�Z d5d6� Z d7d8� Z d9d:� Z d;d<� Z dtd=d>�Z!d?d@� Z"dAdB� Z#dCdD� Z$dudFdG�Z%dHdI� Z&dJdK� Z'dLdM� Z(dvdNdO�Z)dPdQ� Z*dwdTdU�Z+dVdW� Z,dXdY� Z-dZd[� Z.d\d]� Z/d^d_� Z0e0Z1dxd`da�Z2dydcdd�Z3dzdedf�Z4d{dgdh�Z5didj� Z6dkdl� Z7eZ8dS )|r
zvAnimation part of the RawTurtle.
Puts RawTurtle upon a TurtleScreen and provides tools for
its animation.
Nrk r� r� c C s4 t |t�r|| _n|t |t�r:|tjkr2tj�|� || _nTt |ttf�r�tjD ]}|j |krN|| _ q�qNt|�| _tj�| j� n t
d| ��| j}t � | |�
� � t� | � |j�| � |�� | _t||�| _d | _d| _d | _| _|| _d| _|�� | _| jg| _ | jg| _ g | _ || _ t |�| _!| �"� d S )Nzbad canvas argument %sF)#r� �_Screenr� r r
�screensr> r r� r. r� r� r� r r$ r� rD �drawingLineItemrB r� �_poly�
_creatingPoly� _fillitem� _fillpathr( �_hidden_from_screen�currentLineItemr � currentLiner� �
stampItems�_undobuffersizer� r rJ )r� Zcanvasrk r� r� r� r� r� r� r� � s@
zRawTurtle.__init__c C s0 t �| � t�| � | �� | �� | �� dS )a� Delete the turtle's drawings and restore its default values.
No argument.
Delete the turtle's drawings from the screen, re-center the turtle
and set variables to the default values.
Example (for a Turtle instance named turtle):
>>> turtle.position()
(0.00,-22.00)
>>> turtle.heading()
100.0
>>> turtle.reset()
>>> turtle.position()
(0.00,0.00)
>>> turtle.heading()
0.0
N)r� r` r$ r& �_clearr� rJ r� r� r� r� r`
s
zRawTurtle.resetc C s& |dks|dkrd| _ n
t|�| _ dS )a� Set or disable undobuffer.
Argument:
size -- an integer or None
If size is an integer an empty undobuffer of given size is installed.
Size gives the maximum number of turtle-actions that can be undone
by the undo() function.
If size is None, no undobuffer is present.
Example (for a Turtle instance named turtle):
>>> turtle.setundobuffer(42)
Nr )r r� )r� �sizer� r� r� rh
s zRawTurtle.setundobufferc C s | j dkrdS | j �� S )z�Return count of entries in the undobuffer.
No argument.
Example (for a Turtle instance named turtle):
>>> while undobufferentries():
... undo()
Nr )r r� r� r� r� r� rx ,
s
zRawTurtle.undobufferentriesc C sl d | _ | _| jD ]}| j�|� q| j�� | _g | _| jrJ| j� | j
� | jg| _| � � | � | j
� dS )z Delete all of pen's drawingsN)rN rO r� r� rI rD rQ rR r+ r> r r7 rh rT rG r� r� r� rU 9
s
zRawTurtle._clearc C s | � � | �� dS )ag Delete the turtle's drawings from the screen. Do not move turtle.
No arguments.
Delete the turtle's drawings from the screen. Do not move turtle.
State and position of the turtle as well as drawings of other
turtles are not affected.
Examples (for a Turtle instance named turtle):
>>> turtle.clear()
N)rU rJ r� r� r� r� r5 G
s zRawTurtle.clearc C sF | j �� | j jdkrd S t| j�dkrB| j �| j| j| j| j� d S r� ) r� r� r� r� rR rE rQ r) r' r� r� r� r� r� V
s
�zRawTurtle._update_datac C sx | j }|jdkrdS |jdkrD| �� | �� |�� |�|j� n0| �� |jdkrt|�� D ] }|�� q^|�� dS )z&Perform a Turtle-data update.
r Nr� ) r� r� r� r� rJ rM r� r� r+ )r� r� rq r� r� r� rJ ^
s
zRawTurtle._updatec C s | j �||�S )am Turns turtle animation on/off and set delay for update drawings.
Optional arguments:
n -- nonnegative integer
delay -- nonnegative integer
If n is given, only each n-th regular screen update is really performed.
(Can be used to accelerate the drawing of complex graphics.)
Second arguments sets delay value (see RawTurtle.delay())
Example (for a Turtle instance named turtle):
>>> turtle.tracer(8, 25)
>>> dist = 2
>>> for i in range(200):
... turtle.fd(dist)
... turtle.rt(90)
... dist += 2
)r� r* )r� �flagr r� r� r� r p
s zRawTurtle._tracerc C s | j �|�S r� )r� r� r r� r� r� r� �
s zRawTurtle._colorc C s | j �|�S r� )r� r� r r� r� r� r� �
s zRawTurtle._colorstrc C s� t |t�r|S z|\}}}W n( ttfk
rD tdt|� ��Y nX | jjdkrldd� |||fD �\}}}d| kr�dkr�n n.d| kr�dkr�n nd| kr�dks�n tdt|� ��d|||f S ) z,Convert colortriples to hexstrings.
r� r� c S s g | ]}t d | ��qS r� r� r� r� r� r� r~ �
s z!RawTurtle._cc.<locals>.<listcomp>r r� r� r� )r� r� r� r� r� r� r� )r� r r� r� r� r� r� r� �_cc�
s
Fz
RawTurtle._ccc s� | j � | �| j� | j}d| _ d| _t| �}� | _ || _� |_ t� | jj�|_� j�|� � j | jj j
}|dkr�� � � |j_ nJ|dkr�� �
� j d j�|j_ n*|dkrʇ fdd�� j | jj jD �|j_ � �� |_|�� |S )a Create and return a clone of the turtle.
No argument.
Create and return a clone of the turtle with same position, heading
and turtle properties.
Example (for a Turtle instance named mick):
mick = Turtle()
joe = mick.clone()
Nr� rt r/ r� c s g | ] }� � � �qS r� rE rF rG r� r� r~ �
s z#RawTurtle.clone.<locals>.<listcomp>)r� r= r+ r� r rB rD r� r> r� ry r: rH ru r� rD rQ rJ )r� r� �q�ttyper� rG r� r8 �
s.
�
zRawTurtle.clonec C sB |dkr| j jS || j�� kr*td| ��| j �|� | �� dS )a� Set turtle shape to shape with given name / return current shapename.
Optional argument:
name -- a string, which is a valid shapename
Set turtle shape to shape with given name or, if name is not given,
return name of current shape.
Shape with name must exist in the TurtleScreen's shape dictionary.
Initially there are the following polygon shapes:
'arrow', 'turtle', 'circle', 'square', 'triangle', 'classic'.
To learn about how to deal with shapes see Screen-method register_shape.
Example (for a Turtle instance named turtle):
>>> turtle.shape()
'arrow'
>>> turtle.shape("turtle")
>>> turtle.shape()
'turtle'
NzThere is no shape named %s)r� rD r� r r� rC rJ )r� r� r� r� r� rk �
s zRawTurtle.shapec C s� || kr | kr dkr8n n| j \}}||| jfS |dksH|dkrPtd��|dk rt|dkrj||f}q�||f}n |dk r�| j d |f}n| j }|dkr�| j}| jd||d� dS )aO Set/return turtle's stretchfactors/outline. Set resizemode to "user".
Optional arguments:
stretch_wid : positive number
stretch_len : positive number
outline : positive number
Return or set the pen's attributes x/y-stretchfactors and/or outline.
Set resizemode to "user".
If and only if resizemode is set to "user", the turtle will be displayed
stretched according to its stretchfactors:
stretch_wid is stretchfactor perpendicular to orientation
stretch_len is stretchfactor in direction of turtles orientation.
outline determines the width of the shapes's outline.
Examples (for a Turtle instance named turtle):
>>> turtle.resizemode("user")
>>> turtle.shapesize(5, 5, 12)
>>> turtle.shapesize(outline=8)
Nr z(stretch_wid/stretch_len must not be zeror3 )ra r; r9 )r- r1 r� rV )r� Z stretch_widZ stretch_lenr9 r; r� r� r� rl �
s$ "
�zRawTurtle.shapesizec C s |dkr| j S | jd|d� dS )a� Set or return the current shearfactor.
Optional argument: shear -- number, tangent of the shear angle
Shear the turtleshape according to the given shearfactor shear,
which is the tangent of the shear angle. DO NOT change the
turtle's heading (direction of movement).
If shear is not given: return the current shearfactor, i. e. the
tangent of the shear angle, by which lines parallel to the
heading of the turtle are sheared.
Examples (for a Turtle instance named turtle):
>>> turtle.shape("circle")
>>> turtle.shapesize(5,2)
>>> turtle.shearfactor(0.5)
>>> turtle.shearfactor()
>>> 0.5
Nr3 )ra rn )r. rV )r� Zshearr� r� r� rn s zRawTurtle.shearfactorc C s< | | j | j }|tj d dtj }| jd|d� dS )aI Rotate the turtleshape to point in the specified direction
Argument: angle -- number
Rotate the turtleshape to point in the direction specified by angle,
regardless of its current tilt-angle. DO NOT change the turtle's
heading (direction of movement).
Examples (for a Turtle instance named turtle):
>>> turtle.shape("circle")
>>> turtle.shapesize(5,2)
>>> turtle.settiltangle(45)
>>> stamp()
>>> turtle.fd(50)
>>> turtle.settiltangle(-45)
>>> stamp()
>>> turtle.fd(50)
r� r� r3 )ra rs N)r r r� r� rV �r� r� rs r� r� r� rg s zRawTurtle.settiltanglec C s> |dkr0| j dtj | j }|| j | j S | �|� dS )a� Set or return the current tilt-angle.
Optional argument: angle -- number
Rotate the turtleshape to point in the direction specified by angle,
regardless of its current tilt-angle. DO NOT change the turtle's
heading (direction of movement).
If angle is not given: return the current tilt-angle, i. e. the angle
between the orientation of the turtleshape and the heading of the
turtle (its direction of movement).
Deprecated since Python 3.1
Examples (for a Turtle instance named turtle):
>>> turtle.shape("circle")
>>> turtle.shapesize(5,2)
>>> turtle.tilt(45)
>>> turtle.tiltangle()
Nr� )r/ r� r� r r r rg r[ r� r� r� rt 4 s zRawTurtle.tiltanglec C s | � || �� � dS )a� Rotate the turtleshape by angle.
Argument:
angle - a number
Rotate the turtleshape by angle from its current tilt-angle,
but do NOT change the turtle's heading (direction of movement).
Examples (for a Turtle instance named turtle):
>>> turtle.shape("circle")
>>> turtle.shapesize(5,2)
>>> turtle.tilt(30)
>>> turtle.fd(50)
>>> turtle.tilt(30)
>>> turtle.fd(50)
N)rg rt r r� r� r� rs N s zRawTurtle.tiltc C s6 || kr(| kr(| kr(dkr2n n| j S | j \}}}}|dk rL|}|dk rX|}|dk rd|}|dk rp|}|| || dkr�td��||||f| _ t�| |�dtj } t�| �t�| � }
} | | |
| | | |
| |
| | | |
| | | f\} }
}}| |f| _|
| | _| | _ | j
dd� dS )a� Set or return the current transformation matrix of the turtle shape.
Optional arguments: t11, t12, t21, t22 -- numbers.
If none of the matrix elements are given, return the transformation
matrix.
Otherwise set the given elements and transform the turtleshape
according to the matrix consisting of first row t11, t12 and
second row t21, 22.
Modify stretchfactor, shearfactor and tiltangle according to the
given matrix.
Examples (for a Turtle instance named turtle):
>>> turtle.shape("square")
>>> turtle.shapesize(4,2)
>>> turtle.shearfactor(-0.5)
>>> turtle.shapetransform()
(4.0, -1.0, -0.0, 2.0)
Nr z0Bad shape transform matrix: must not be singularr� r3 r4 ) r0 r� r� r r� r� r� r- r. r/ rV )r� �t11�t12�t21�t22Zm11Zm12Zm21Zm22Zalfar? r@ Za11Za12Za21Za22r� r� r� rm a s0 , �
zRawTurtle.shapetransformc s^ | j �| j\��| j\� �t� ��j �j �}dt|� | \� �� ����fdd�|D �S )zlComputes transformed polygon shapes from a shape
according to current position and heading.
r� c sF g | ]>\}}��| � | �j �� | �| �j f�qS r� )r4 r5 �r{ r� r� �Ze0Ze1Zp0Zp1r� r� r� r~ � s �z(RawTurtle._polytrafo.<locals>.<listcomp>)r� r r r r5 r4 r )r� r� �er� ra r� �
_polytrafo� s
�zRawTurtle._polytrafoc C s2 | j j| jj }|jdkr.| �|j|jdk�S dS )a@ Return the current shape polygon as tuple of coordinate pairs.
No argument.
Examples (for a Turtle instance named turtle):
>>> turtle.shape("square")
>>> turtle.shapetransform(4, -1, 0, 2)
>>> turtle.get_shapepoly()
((50, -20), (30, 20), (-50, 20), (-30, -20))
r� r� N)r� r� r� rD ry �
_getshapepolyr� )r� rk r� r� r� rG � s
zRawTurtle.get_shapepolyFc sx | j dks|r | j\� ���n>| j dkrNtd| jd �}|dd|f\� ���n| j dkr\|S t� ���fdd�|D ��S ) z`Calculate transformed shape polygon according to resizemode
and shapetransform.
r3 r2 r� g @r r� c 3 s2 | ]*\}}� | �| �| �| fV qd S r� r� r` �r\ r] r^ r_ r� r� r� � s z*RawTurtle._getshapepoly.<locals>.<genexpr>)r% r0 �maxr' r� )r� r� r� r! r� re r� rd � s
zRawTurtle._getshapepolyc C s� | j }|j| jj }|j}| jj}| j�r*|jdk�r*|jdk�r*d| _ |j
}|dkr�| j dkrfd}n| j dkrx| j }n| j
}| �| �|��}| j| j }}|j|||||dd� nt|d kr�|�|| j|� nZ|d
k�r�t||�D ]D\} \}
}}| �| �|
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� nJ|d k�rv|�|| j|jd j
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d
� �q�d| _ d S )zpManages the correct rendering of the turtle with respect to
its shape, resizemode, stretch and tilt etc.r Fr� r� r� r2 T�r" r9 rz rA rt r� N�r� r� r� r� r/ )r� r� r� rD ry rH r( r� r� rP r� r% r' r1 rc rd r* r) rC rw r �ziprX ) r� r� rk rZ Ztitem�tshaper6 �fc�ocrH r� r� r� r� r� � sR
�
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zRawTurtle._drawturtlec C sT | j }|j| jj }|j}|j}|dkr�|�� }| jdkr@d}n| jdkrR| j}n| j }| �
| � |��}| j | j
}}|j|||||dd� n�|dkr�|�d�}|�|| j|� n�|d k�r4g }|D ]} |�� }
|�|
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\} }}| �
| � | d��} |j|
| | �|�| �|�| j dd� q�| j�|� | j�d
|f� |S ) a� Stamp a copy of the turtleshape onto the canvas and return its id.
No argument.
Stamp a copy of the turtle shape onto the canvas at the current
turtle position. Return a stamp_id for that stamp, which can be
used to delete it by calling clearstamp(stamp_id).
Example (for a Turtle instance named turtle):
>>> turtle.color("blue")
>>> turtle.stamp()
13
>>> turtle.fd(50)
r� r� r� r2 Trg rt r� r� rr )r� r� r� rD ry r� r: r% r' r1 rc rd r* r) rC ru rw r r> r� ri rX rS r r� ) r� r� rk rZ rj �stitemr6 rk rl ZelementrH r� r� r� r� rr � sH
�
� zRawTurtle.stampc C s� || j krDt|t�r,|D ]}| j�|� qn | j�|� | j �|� d|f}| j}||jkr`dS |j�|�}|j�|� ||j kr�|j d |j
|_ |j� |j d |j
dg� dS )z9does the work for clearstamp() and clearstamps()
rr Nr� ) rS r� r� r� rI r� r r� �indexr� r� �insert)r� �stampidZsubitemrH Zbufrn r� r� r� � _clearstamp s
zRawTurtle._clearstampc C s | � |� | �� dS )aD Delete stamp with given stampid
Argument:
stampid - an integer, must be return value of previous stamp() call.
Example (for a Turtle instance named turtle):
>>> turtle.color("blue")
>>> astamp = turtle.stamp()
>>> turtle.fd(50)
>>> turtle.clearstamp(astamp)
N)rq rJ )r� rp r� r� r� r6 s
zRawTurtle.clearstampc C s^ |dkr| j dd� }n&|dkr0| j d|� }n| j |d� }|D ]}| �|� qB| �� dS )a� Delete all or first/last n of turtle's stamps.
Optional argument:
n -- an integer
If n is None, delete all of pen's stamps,
else if n > 0 delete first n stamps
else if n < 0 delete last n stamps.
Example (for a Turtle instance named turtle):
>>> for i in range(8):
... turtle.stamp(); turtle.fd(30)
...
>>> turtle.clearstamps(2)
>>> turtle.clearstamps(-2)
>>> turtle.clearstamps()
Nr )rS rq rJ )r� r� ZtoDeleterH r� r� r� r7 - s zRawTurtle.clearstampsc
C s� | j | j| jt| jt�f}| j}d| j||| j| j dd� |�
| j�| j dd� ff}| j rh| j �
|� | j}| j�rZ|jdk�rZ|| }|d |j d |d |j d }dt|d dd| j | j � }|d | } td|�D ]R}
|
dkr�d
} nd } || |
| _| j �r2|�| j|| jf| j| j| � | �� q�| j �rZ|j| jd d
| jd� | j �rn| j �|� t| jt��r�| j�|� || _| j�r�| j�|� t| j �dk�r�| �� | �� dS )z�Move the pen to the point end, thereby drawing a line
if pen is down. All other methods for turtle movement depend
on this one.
�goNr� r r� r� r� 皙�����?r� TF�r� r� r� �r" rz �* ) r+ r) r' r� rO r� r� r rQ rR r� r� r r� r, r� r4 r5 r� r rE rK rJ r> rM rL r� r= ) r� r �go_modesr� Z
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� }|d
| }td|�D ]P}|dk�r@d}nd}||| | _|�rr��| j|| jf|||� | �� �q,|�r��j| jdd|d� || _| j�r�t| j�d k�r�| j�� | jg k�r�d| _d| _| �r| jg k�r�d| _td� n| jdk �r| j�� | �� dS )z)Reverse a _goto. Used for undo()
r� z$undogoto: HALLO-DA-STIMMT-WAS-NICHT!r� r� ru c s& g | ] }|� kr�� |�d kr|�qS )r� )ry rz �r� r� r� r� r~ � s �z'RawTurtle._undogoto.<locals>.<listcomp>r� r r� r� rs r� TFrt Nz Unwahrscheinlich in _undogoto!)r� r r r� rQ rR rE r� rI r� r, r� r4 r5 r� r rK rJ rM r� rL r� rO )r� �entry�old�newrw ZcoodataZdrawingZpcZpsrB ZcLIZcLr� ZusepcZtodeleter| rx ry rz r{ r| r� rA r� r} r� � _undogoto~ sl
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zRawTurtle._undogotoc C s� | j r| j �d|| jf� || j9 }| j�|�}| jj}|dkr�| jdkr�d| j }dtt |�| � }d| | }t
|�D ]}| j�|�| _| � � q||| _| � � dS )z&Turns pen clockwise by angle.
�rotr� r g @r� N) r r� r r r� r� r� r, r� r r rJ )r� r� Z neworientr� Zanglevelr r| r� r� r� r� r � s
zRawTurtle._rotateTc C sn t | j�dkrD| j�| j| j| j| j� | j�� | _| j� | j� n| jj| jdd� g | _|rj| j
g| _dS )z�Closes current line item and starts a new one.
Remark: if current line became too long, animation
performance (via _drawline) slowed down considerably.
r� T)rA N) r� rR r� rE rQ r) r' rD r� r> r rA r� r� r� r= � s � zRawTurtle._newLinec C s t | jt�S )a Return fillstate (True if filling, False else).
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.begin_fill()
>>> if turtle.filling():
... turtle.pensize(5)
... else:
... turtle.pensize(3)
)r� rO r� r� r� r� r� rB � s zRawTurtle.fillingc C sX | � � s"| j�� | _| j�| j� | jg| _| �� | j rL| j �
d| jf� | � � dS )a Called just before drawing a shape to be filled.
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.color("black", "red")
>>> turtle.begin_fill()
>>> turtle.circle(60)
>>> turtle.end_fill()
� beginfillN) rB r� r: rN r� r> r rO r= r r� rJ r� r� r� r� r1 � s
zRawTurtle.begin_fillc C s^ | � � rZt| j�dkrF| jj| j| j| jd� | jrF| j�d| jf� d | _| _| � � dS )a Fill the shape drawn after the call begin_fill().
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.color("black", "red")
>>> turtle.begin_fill()
>>> turtle.circle(60)
>>> turtle.end_fill()
r� r; �dofillN)
rB r� rO r� rC rN r* r r� rJ r� r� r� r� r>
s � zRawTurtle.end_fillc G s8 |sNt |ttf�r0| �|�}| jt| jd� }qr| j}|sr| jt| jd� }n$|dkrh| jt| jd� }| �|�}t| jd�r�| j� | j
||�}| j � |� | j
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_z>| �� dkr�| �� | �� | �|� | �|� | �d� W 5 | �|� X | j
�r4d | j
_dS )
a� Draw a dot with diameter size, using color.
Optional arguments:
size -- an integer >= 1 (if given)
color -- a colorstring or a numeric color tuple
Draw a circular dot with diameter size, using color.
If size is not given, the maximum of pensize+4 and 2*pensize is used.
Example (for a Turtle instance named turtle):
>>> turtle.dot()
>>> turtle.fd(50); turtle.dot(20, "blue"); turtle.fd(50)
r� N�_dotr< r Tr2 r F)r� r� r� r� r' rf r) �hasattrr� r� r r� r> r r� rV r� ra rM rX rY rW rC )r� rV r9 rH rV r� r� r� r<
s:
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RawTurtle.dotc C sB | j �| j|||| j�\}}| j�|� | jr>| j�d|f� |S )z)Performs the writing for write()
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s � zRawTurtle._writerP ��Arialr� r7 c C s` | j r | j �dg� d| j _| �t|�|�� |�}|rN| �� \}}| �||� | j r\d| j _dS )a� Write text at the current turtle position.
Arguments:
arg -- info, which is to be written to the TurtleScreen
move (optional) -- True/False
align (optional) -- one of the strings "left", "center" or right"
font (optional) -- a triple (fontname, fontsize, fonttype)
Write text - the string representation of arg - at the current
turtle position according to align ("left", "center" or right")
and with the given font.
If move is True, the pen is moved to the bottom-right corner
of the text. By default, move is False.
Example (for a Turtle instance named turtle):
>>> turtle.write('Home = ', True, align="center")
>>> turtle.write((0,0), True)
r TFN)r r� r� rX r� r� r[ re )r� �argZmoverW rU r r� r� r� r� r� r{ R
s zRawTurtle.writec C s | j g| _d| _dS )a Start recording the vertices of a polygon.
No argument.
Start recording the vertices of a polygon. Current turtle position
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Example (for a Turtle instance named turtle):
>>> turtle.begin_poly()
TN)r rL rM r� r� r� r� r2 o
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zRawTurtle.begin_polyc C s
d| _ dS )a7 Stop recording the vertices of a polygon.
No argument.
Stop recording the vertices of a polygon. Current turtle position is
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Example (for a Turtle instance named turtle):
>>> turtle.end_poly()
FN)rM r� r� r� r� r? }
s zRawTurtle.end_polyc C s | j dk rt| j �S dS )z�Return the lastly recorded polygon.
No argument.
Example (for a Turtle instance named turtle):
>>> p = turtle.get_poly()
>>> turtle.register_shape("myFavouriteShape", p)
N)rL r� r� r� r� r� rD �
s
zRawTurtle.get_polyc C s | j S )a� Return the TurtleScreen object, the turtle is drawing on.
No argument.
Return the TurtleScreen object, the turtle is drawing on.
So TurtleScreen-methods can be called for that object.
Example (for a Turtle instance named turtle):
>>> ts = turtle.getscreen()
>>> ts
<turtle.TurtleScreen object at 0x0106B770>
>>> ts.bgcolor("pink")
rG r� r� r� r� rF �
s zRawTurtle.getscreenc C s | S )aU Return the Turtleobject itself.
No argument.
Only reasonable use: as a function to return the 'anonymous turtle':
Example:
>>> pet = getturtle()
>>> pet.fd(50)
>>> pet
<turtle.Turtle object at 0x0187D810>
>>> turtles()
[<turtle.Turtle object at 0x0187D810>]
r� r� r� r� r� rH �
s zRawTurtle.getturtlec C s | j �|�S )zDSet delay value which determines speed of turtle animation.
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s zRawTurtle._delayr� c C s" | j �| jj|||� | �� dS )a� Bind fun to mouse-click event on this turtle on canvas.
Arguments:
fun -- a function with two arguments, to which will be assigned
the coordinates of the clicked point on the canvas.
btn -- number of the mouse-button defaults to 1 (left mouse button).
add -- True or False. If True, new binding will be added, otherwise
it will replace a former binding.
Example for the anonymous turtle, i. e. the procedural way:
>>> def turn(x, y):
... left(360)
...
>>> onclick(turn) # Now clicking into the turtle will turn it.
>>> onclick(None) # event-binding will be removed
N)r� re r� rH rJ r� r� r� r� rR �
s zRawTurtle.onclickc C s" | j �| jj|||� | �� dS )a� Bind fun to mouse-button-release event on this turtle on canvas.
Arguments:
fun -- a function with two arguments, to which will be assigned
the coordinates of the clicked point on the canvas.
btn -- number of the mouse-button defaults to 1 (left mouse button).
Example (for a MyTurtle instance named joe):
>>> class MyTurtle(Turtle):
... def glow(self,x,y):
... self.fillcolor("red")
... def unglow(self,x,y):
... self.fillcolor("")
...
>>> joe = MyTurtle()
>>> joe.onclick(joe.glow)
>>> joe.onrelease(joe.unglow)
Clicking on joe turns fillcolor red, unclicking turns it to
transparent.
N)r� rf r� rH rJ r� r� r� r� rT �
s zRawTurtle.onreleasec C s | j �| jj|||� dS )a� Bind fun to mouse-move event on this turtle on canvas.
Arguments:
fun -- a function with two arguments, to which will be assigned
the coordinates of the clicked point on the canvas.
btn -- number of the mouse-button defaults to 1 (left mouse button).
Every sequence of mouse-move-events on a turtle is preceded by a
mouse-click event on that turtle.
Example (for a Turtle instance named turtle):
>>> turtle.ondrag(turtle.goto)
Subsequently clicking and dragging a Turtle will move it
across the screen thereby producing handdrawings (if pen is
down).
N)r� rg r� rH r� r� r� r� rS �
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z2Does the main part of the work for undo()
Nr� rr r rr )r� r< r� rh r� r8 r� rV )r r r r� r6 r� r� rI r� r� rC rN rO r$ rV )r� �actionr� r� ZdegPAUZdummyrm rH r� r� r� �_undo s<
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zRawTurtle._undoc C sl | j dkrdS | j �� }|d }|dd� }|dkr\|rh|�� }| �|d |dd� � q4n | �||� dS )a� undo (repeatedly) the last turtle action.
No argument.
undo (repeatedly) the last turtle action.
Number of available undo actions is determined by the size of
the undobuffer.
Example (for a Turtle instance named turtle):
>>> for i in range(4):
... turtle.fd(50); turtle.lt(80)
...
>>> for i in range(8):
... turtle.undo()
...
Nr r� r )r r� r� )r� rH r� r� r� r� r� rw ' s
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c C s t jdkrt� t _t jS )z�Return the singleton screen object.
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z_Screen.__init__rz r� r� r� c C s� t | jd�sdS | j�� }| j�� }t|t�rNd| krBdkrNn n|| }|dkrb|| d }t|t�r�d| kr�dkr�n n|| }|dkr�|| d }| j�||||� | �� dS )a Set the size and position of the main window.
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height: as integer the height in pixels, as float a fraction of the
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startx: if positive, starting position in pixels from the left
edge of the screen, if negative from the right edge
Default, startx=None is to center window horizontally.
starty: if positive, starting position in pixels from the top
edge of the screen, if negative from the bottom edge
Default, starty=None is to center window vertically.
Examples (for a Screen instance named screen):
>>> screen.setup (width=200, height=200, startx=0, starty=0)
sets window to 200x200 pixels, in upper left of screen
>>> screen.setup(width=.75, height=0.5, startx=None, starty=None)
sets window to 75% of screen by 50% of screen and centers
r' Nr r� r� )r� r� r* r+ r� r� r' r, )r� rz r� r% r& rQ Zshr� r� r� r& n s
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_Screen.setupc C s t jdk rt j�|� |t _dS )aq Set title of turtle-window
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objects.
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>>> screen.title("Welcome to the turtle-zoo!")
N)rI r� r) r� )r� Z titlestringr� r� r� r) � s
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z_Screen._destroyc C s | � � dS )z~Shut the turtlegraphics window.
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N)r� r� r� r� r� r � s z _Screen.byec sN � fdd�}� � |� td r"dS z
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rH td� Y nX dS )al Go into mainloop until the mouse is clicked.
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set to True in turtle.cfg. In this case IDLE's mainloop
is active also for the client script.
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>>> screen.exitonclick()
c s � � � dS )z&Screen.bye() with two dummy-parametersN)r )r� r� r� r� r� �exitGracefully� s z+_Screen.exitonclick.<locals>.exitGracefullyr� Nr )rR r� r �AttributeError�exit)r� r� r� r� r� r � s
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�zTurtle.__init__)r� r� r� r� r� r� r� r� r� r� r� r� r � s ��turtle_docstringdictc C s� i }t D ]}d| }t|�j||< qtD ]}d| }t|�j||< q(td| d���}tdd� |D ��}|�d� |dd � D ](}|�d
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z_Screen.zTurtle.z%s.pyr6 c s s$ | ] }|� d �d tkr|V qdS )r� r� N)r � _alias_listr� r� r� r� r� s �z&write_docstringdict.<locals>.<genexpr>zdocsdict = {
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Manage shelves of pickled objects.
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module can handle. This includes most class instances, recursive data
types, and objects containing lots of shared sub-objects. The keys
are ordinary strings.
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object):
import shelve
d = shelve.open(filename) # open, with (g)dbm filename -- no suffix
d[key] = data # store data at key (overwrites old data if
# using an existing key)
data = d[key] # retrieve a COPY of the data at key (raise
# KeyError if no such key) -- NOTE that this
# access returns a *copy* of the entry!
del d[key] # delete data stored at key (raises KeyError
# if no such key)
flag = key in d # true if the key exists
list = d.keys() # a list of all existing keys (slow!)
d.close() # close it
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d[key].append(anitem)
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data = d[key]
data.append(anitem)
d[key] = data
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d = shelve.open(filename, writeback=True)
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actually mutate, so it must cache, and write back at close, all of the
entries that you access. You can call d.sync() to write back all the
entries in the cache, and empty the cache (d.sync() also synchronizes
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for example to store context information, a callback, etc.
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import sys
# create a Trace object, telling it what to ignore, and whether to
# do tracing or line-counting or both.
tracer = trace.Trace(ignoredirs=[sys.base_prefix, sys.base_exec_prefix,],
trace=0, count=1)
# run the new command using the given tracer
tracer.run('main()')
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r = tracer.results()
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function compile(), which take program text, a filename and a 'mode'
and:
- Return code object if the command is complete and valid
- Return None if the command is incomplete
- Raise SyntaxError, ValueError or OverflowError if the command is a
syntax error (OverflowError and ValueError can be produced by
malformed literals).
Approach:
First, check if the source consists entirely of blank lines and
comments; if so, replace it with 'pass', because the built-in
parser doesn't always do the right thing for these.
Compile three times: as is, with \n, and with \n\n appended. If it
compiles as is, it's complete. If it compiles with one \n appended,
we expect more. If it doesn't compile either way, we compare the
error we get when compiling with \n or \n\n appended. If the errors
are the same, the code is broken. But if the errors are different, we
expect more. Not intuitive; not even guaranteed to hold in future
releases; but this matches the compiler's behavior from Python 1.4
through 2.2, at least.
Caveat:
It is possible (but not likely) that the parser stops parsing with a
successful outcome before reaching the end of the source; in this
case, trailing symbols may be ignored instead of causing an error.
For example, a backslash followed by two newlines may be followed by
arbitrary garbage. This will be fixed once the API for the parser is
better.
The two interfaces are:
compile_command(source, filename, symbol):
Compiles a single command in the manner described above.
CommandCompiler():
Instances of this class have __call__ methods identical in
signature to compile_command; the difference is that if the
instance compiles program text containing a __future__ statement,
the instance 'remembers' and compiles all subsequent program texts
with the statement in force.
The module also provides another class:
Compile():
Instances of this class act like the built-in function compile,
but with 'memory' in the sense described above.
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or "eval"
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e5d@, � @ sD d Z ddlZddlmZ G dd� dej�ZG dd� d�Zdd � ZdS )
a� A class supporting chat-style (command/response) protocols.
This class adds support for 'chat' style protocols - where one side
sends a 'command', and the other sends a response (examples would be
the common internet protocols - smtp, nntp, ftp, etc..).
The handle_read() method looks at the input stream for the current
'terminator' (usually '\r\n' for single-line responses, '\r\n.\r\n'
for multi-line output), calling self.found_terminator() on its
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\A\s* # optional whitespace at the start, then
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(?=\d|\.\d) # lookahead for digit or .digit
(?P<num>\d*) # numerator (possibly empty)
(?: # followed by
(?:/(?P<denom>\d+))? # an optional denominator
| # or
(?:\.(?P<decimal>\d*))? # an optional fractional part
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c s� e Zd ZdZdZdRdd�� fdd� Zed d
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In the two-argument form of the constructor, Fraction(8, 6) will
produce a rational number equivalent to 4/3. Both arguments must
be Rational. The numerator defaults to 0 and the denominator
defaults to 1 so that Fraction(3) == 3 and Fraction() == 0.
Fractions can also be constructed from:
- numeric strings similar to those accepted by the
float constructor (for example, '-2.3' or '1e10')
- strings of the form '123/456'
- float and Decimal instances
- other Rational instances (including integers)
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_numerator� _denominatorr NT��
_normalizec sR t t| ��| �}|dk�rdt|�tkr6||_d|_|S t|tj �rV|j
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Takes a string like '3/2' or '1.5', another Rational instance, a
numerator/denominator pair, or a float.
Examples
--------
>>> Fraction(10, -8)
Fraction(-5, 4)
>>> Fraction(Fraction(1, 7), 5)
Fraction(1, 35)
>>> Fraction(Fraction(1, 7), Fraction(2, 3))
Fraction(3, 14)
>>> Fraction('314')
Fraction(314, 1)
>>> Fraction('-35/4')
Fraction(-35, 4)
>>> Fraction('3.1415') # conversion from numeric string
Fraction(6283, 2000)
>>> Fraction('-47e-2') # string may include a decimal exponent
Fraction(-47, 100)
>>> Fraction(1.47) # direct construction from float (exact conversion)
Fraction(6620291452234629, 4503599627370496)
>>> Fraction(2.25)
Fraction(9, 4)
>>> Fraction(Decimal('1.47'))
Fraction(147, 100)
N� z Invalid literal for Fraction: %rZnum�0�denom�decimal�
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zFraction.__new__c C sD t |tj�r| |�S t |t�s8td| j|t|�jf ��| |�� � S )z�Converts a finite float to a rational number, exactly.
Beware that Fraction.from_float(0.3) != Fraction(3, 10).
z.%s.from_float() only takes floats, not %r (%s))r" r# �Integralr' r/ �__name__r
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from_float� s
�zFraction.from_floatc C sV ddl m} t|tj�r&|t|��}n$t||�sJtd| j|t|�jf ��| |� � � S )zAConverts a finite Decimal instance to a rational number, exactly.r r z2%s.from_decimal() only takes Decimals, not %r (%s))
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��zFraction.from_decimalc C s | j | jfS )z�Return the integer ratio as a tuple.
Return a tuple of two integers, whose ratio is equal to the
Fraction and with a positive denominator.
r �r2 r r r r( � s zFraction.as_integer_ratio�@B c
C s� |dk rt d��| j|kr"t| �S d\}}}}| j| j }}|| }||| } | |krZq�||||| | f\}}}}|||| }}q<|| | }
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| �} t||�} t| | �t| | �kr�| S | S dS )aW Closest Fraction to self with denominator at most max_denominator.
>>> Fraction('3.141592653589793').limit_denominator(10)
Fraction(22, 7)
>>> Fraction('3.141592653589793').limit_denominator(100)
Fraction(311, 99)
>>> Fraction(4321, 8765).limit_denominator(10000)
Fraction(4321, 8765)
r z$max_denominator should be at least 1)r r r r N)r, r r r �abs)
r2 Zmax_denominatorZp0Zq0Zp1Zq1�n�dr Zq2�kZbound1Zbound2r r r �limit_denominator� s$
zFraction.limit_denominatorc C s | j S r )r �r r r r r% s zFraction.numeratorc C s | j S r )r rC r r r r& s zFraction.denominatorc C s d| j j| j| jf S )z
repr(self)z
%s(%s, %s))r6 r8 r r r< r r r �__repr__" s �zFraction.__repr__c C s( | j dkrt| j�S d| j| j f S dS )z str(self)r z%s/%sN)r r) r r< r r r �__str__' s
zFraction.__str__c sT � �fdd�}d� j d |_ �j|_� �fdd�}d� j d |_ �j|_||fS )a� Generates forward and reverse operators given a purely-rational
operator and a function from the operator module.
Use this like:
__op__, __rop__ = _operator_fallbacks(just_rational_op, operator.op)
In general, we want to implement the arithmetic operations so
that mixed-mode operations either call an implementation whose
author knew about the types of both arguments, or convert both
to the nearest built in type and do the operation there. In
Fraction, that means that we define __add__ and __radd__ as:
def __add__(self, other):
# Both types have numerators/denominator attributes,
# so do the operation directly
if isinstance(other, (int, Fraction)):
return Fraction(self.numerator * other.denominator +
other.numerator * self.denominator,
self.denominator * other.denominator)
# float and complex don't have those operations, but we
# know about those types, so special case them.
elif isinstance(other, float):
return float(self) + other
elif isinstance(other, complex):
return complex(self) + other
# Let the other type take over.
return NotImplemented
def __radd__(self, other):
# radd handles more types than add because there's
# nothing left to fall back to.
if isinstance(other, numbers.Rational):
return Fraction(self.numerator * other.denominator +
other.numerator * self.denominator,
self.denominator * other.denominator)
elif isinstance(other, Real):
return float(other) + float(self)
elif isinstance(other, Complex):
return complex(other) + complex(self)
return NotImplemented
There are 5 different cases for a mixed-type addition on
Fraction. I'll refer to all of the above code that doesn't
refer to Fraction, float, or complex as "boilerplate". 'r'
will be an instance of Fraction, which is a subtype of
Rational (r : Fraction <: Rational), and b : B <:
Complex. The first three involve 'r + b':
1. If B <: Fraction, int, float, or complex, we handle
that specially, and all is well.
2. If Fraction falls back to the boilerplate code, and it
were to return a value from __add__, we'd miss the
possibility that B defines a more intelligent __radd__,
so the boilerplate should return NotImplemented from
__add__. In particular, we don't handle Rational
here, even though we could get an exact answer, in case
the other type wants to do something special.
3. If B <: Fraction, Python tries B.__radd__ before
Fraction.__add__. This is ok, because it was
implemented with knowledge of Fraction, so it can
handle those instances before delegating to Real or
Complex.
The next two situations describe 'b + r'. We assume that b
didn't know about Fraction in its implementation, and that it
uses similar boilerplate code:
4. If B <: Rational, then __radd_ converts both to the
builtin rational type (hey look, that's us) and
proceeds.
5. Otherwise, __radd__ tries to find the nearest common
base ABC, and fall back to its builtin type. Since this
class doesn't subclass a concrete type, there's no
implementation to fall back to, so we need to try as
hard as possible to return an actual value, or the user
will get a TypeError.
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Fraction._subc C s t | j|j | j|j �S )za * b�r r% r& r r r r �_mul� s z
Fraction._mulc C s t | j|j | j|j �S )za / brX r r r r �_div� s
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Fraction._modc C s� t |tj�r�|jdkr�|j}|dkr>t| j| | j| dd�S | jdkrft| j| | j| dd�S t| j | | j | dd�S q�t| �t|� S n t| �| S dS )z�a ** b
If b is not an integer, the result will be a float or complex
since roots are generally irrational. If b is an integer, the
result will be rational.
r r Fr N) r" r# r$ r& r% r r r r' )r r Zpowerr r r �__pow__� s&
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zFraction.__rpow__c C s t | j| jdd�S )z++a: Coerces a subclass instance to FractionFr �r r r rC r r r �__pos__� s zFraction.__pos__c C s t | j | jdd�S )z-aFr rb rC r r r �__neg__� s zFraction.__neg__c C s t t| j�| jdd�S )zabs(a)Fr )r r> r r rC r r r �__abs__� s zFraction.__abs__c C s* | j dk r| j | j S | j | j S dS )ztrunc(a)r Nr rC r r r � __trunc__ s
zFraction.__trunc__c C s | j | j S )z
math.floor(a)r[ rC r r r � __floor__
s zFraction.__floor__c C s | j | j S )z math.ceil(a)r[ rC r r r �__ceil__ s zFraction.__ceil__c C s� |dkrZt | j| j�\}}|d | jk r,|S |d | jkrB|d S |d dkrR|S |d S dt|� }|dkr�tt| | �|�S tt| | �| �S dS )z?round(self, ndigits)
Rounds half toward even.
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Implement comparison between a Rational instance `self`, and
either another Rational instance or a float `other`. If
`other` is not a Rational instance or a float, return
NotImplemented. `op` should be one of the six standard
comparison operators.
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�ZcecZdedd�d�e8g eHgdd�d��edd�d�eg eEgdd�d��edd�d�eg eEgdd�d��edd�d�eg eEgdd�d��edd�d�e9g eEgdd�d��edd�d�e@g eEgdd�d��edd�d�eBg eEgdd�d��edd�d�e g eNgdd�d��edd�d�e%g eNgdd�d��edd�d�e#g eNgdd�d��edd�d�e)g ePgd�d�d��edd�d�e'g ePgd�d�d��edd�d�e+g ePgd d�d��edd�d�e-g eRgd�d�d��edd�d�dg e_gd�d�d��edd�d�de_ge_gd�d�d��edd�d�dg eUgdd�d��edd�d�dg eIgdd�d��edd�d�dg eIgdd�d��edd�d�e/g eSgdd�d��edd�d�e1g eSgd d�d��edd�d�e3g eSgdd�d��edd�d�e5g eSgd d�d��edd�d�e;g eKgdd�d��edd�d�e=g eKgdd�d��edd�d�dg eYgdd�d��edd�d�deYe`geYgdd�d��edd�d�deYeaebgeYgdd�d��edd�d�deaebgeYgdd�d��edd�d�dg eWgdd�d��edd�d�deaebgeWgdd�d��edd�d�de`geWgd�d d��ed�d�dde`e`geWgd�dd��ed�d�dde`e`e`geWgd�dd��ed�d�ddg e[gd�d d��ed�d
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�dde[e`e`ge[gd�dd��ed�d�dde[eaebge[gd�dd��ed�d�ddg e]gd �dd��ed�d�dde]eaebge]gd �dd��ed�d�ddeaebge^gd �dd��ed�d �d de`gg d�d d��ed�d �d de`ge`e`gd�d!d��ed�d"�d#dg eagd�d$d��ed�d%�d&deaebgg d�d'd��ed�d(�d)e8g e`gd�d*d��ed�d+�d,eg e`gd�d-d��ed�d.�d/eg e`gd�d0d��ed�d1�d2e8g g d�d3d��ed�d4�d5eg g d�d6d��ed�d7�d8eg g d�d9d��ed�d:�d;de`ge`gd �d<d��ed�d=�d>eg e`gd�d?d��ed�d@�dAeg e`gd�dBd��ed�dC�dDeg e`gd�dEd��ed�dF�dGe!g e`gd�dHd��ed�dI�dJdeSeSge`gd �dKd��ed�dL�dMde`e`ge`gd�dNd��ed�dO�dPde`e`ge`gd�dQd��ed�dR�dSe!eaebge`gd�dTd��ed�dU�dVdeae`ebge`gd�dWd��ed�dX�dYde`e`ge`gd�dZd��ed�d[�d\de`e`e`ge`gd �d]d��ed�d^�d_eg g d�d`d��ed�da�dbde`gg d�dcd��ed�dd�deeg g d �dfd��ed�dg�dhe g e`gd�did��ed�dj�dkde`ge`gd�dld��gDZe[di Zfi Zgehee�D ]n\ZiZjejjkefk� rBel�dmejjkefejjk eif ��ejjmegk� rjel�dnejjmegejjm eif ��eiefejjk< eiegejjm< � q[f[g[i[ji ZneeD ]Zjejenejjm< � q�[j�d��dp�dq�Zoeo� [o�d��dr�ds�Zp�dtd� Zq�dud� Zr�d��dvd�ZsG �dw�dx� �dx�Zt�dyZu�dzZveuev�d{�Zw�d|�d}� Zxey�d~k�
r�ddlzZzezj{�d�d��Z|e|j}�d�ez�~�d���d��d��d�� e|j}�d��d�ejez�~�d���d��d�� e|j}�d��d��d��d��d�� e|j}�d��d�d eD�d��d�� e|j}�d��d��d��d��d�� e|j}�d��d��d��d��d�� e|j}�d��d��d��d��d�� e|j}�d��d��d��d�� e|��� Z�e�j��
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r�i ndZ�e�j�D ]>Z�e�j�j�e�jk�d��Z�e�j���e��d� � ese�e�j�e�e�j�e�� �
q�dS (� ar "Executable documentation" for the pickle module.
Extensive comments about the pickle protocols and pickle-machine opcodes
can be found here. Some functions meant for external use:
genops(pickle)
Generate all the opcodes in a pickle, as (opcode, arg, position) triples.
dis(pickle, out=None, memo=None, indentlevel=4)
Print a symbolic disassembly of a pickle.
� N�dis�genops�optimize���������������c @ s e Zd ZdZdd� ZdS )�ArgumentDescriptor��name�n�reader�docc C s` t |t�st�|| _t |t�r8|dks<|ttttt fks<t�|| _
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r r � r �#/usr/lib64/python3.8/pickletools.py�__init__� s ��zArgumentDescriptor.__init__N��__name__�
__module__� __qualname__� __slots__r r r r r r
� s r
)�unpackc C s" | � d�}|r|d S td��dS )zG
>>> import io
>>> read_uint1(io.BytesIO(b'\xff'))
255
� r z'not enough data in stream to read uint1N)�read�
ValueError��f�datar r r �
read_uint1� s
r* �uint1r$ zOne-byte unsigned integer.r c C s0 | � d�}t|�dkr$td|�d S td��dS )z�
>>> import io
>>> read_uint2(io.BytesIO(b'\xff\x00'))
255
>>> read_uint2(io.BytesIO(b'\xff\xff'))
65535
� z<Hr z'not enough data in stream to read uint2N�r% �len�_unpackr& r' r r r �
read_uint2� s
r0 �uint2r, z)Two-byte unsigned integer, little-endian.c C s0 | � d�}t|�dkr$td|�d S td��dS )z�
>>> import io
>>> read_int4(io.BytesIO(b'\xff\x00\x00\x00'))
255
>>> read_int4(io.BytesIO(b'\x00\x00\x00\x80')) == -(2**31)
True
� z<ir z¬ enough data in stream to read int4Nr- r' r r r � read_int4� s
r3 �int4r2 z8Four-byte signed integer, little-endian, 2's complement.c C s0 | � d�}t|�dkr$td|�d S td��dS )z�
>>> import io
>>> read_uint4(io.BytesIO(b'\xff\x00\x00\x00'))
255
>>> read_uint4(io.BytesIO(b'\x00\x00\x00\x80')) == 2**31
True
r2 z<Ir z'not enough data in stream to read uint4Nr- r' r r r �
read_uint4 s
r5 �uint4z*Four-byte unsigned integer, little-endian.c C s0 | � d�}t|�dkr$td|�d S td��dS )z�
>>> import io
>>> read_uint8(io.BytesIO(b'\xff\x00\x00\x00\x00\x00\x00\x00'))
255
>>> read_uint8(io.BytesIO(b'\xff' * 8)) == 2**64-1
True
� z<Qr z'not enough data in stream to read uint8Nr- r' r r r �
read_uint8& s
r8 �uint8r7 z+Eight-byte unsigned integer, little-endian.Tc C s� | � � }|�d�std��|dd� }|rtdD ]8}|�|�r.|�|�sVtd||f ��|dd� } qtq.td| ��|r�t�|�d �d
�}|S ) au
>>> import io
>>> read_stringnl(io.BytesIO(b"'abcd'\nefg\n"))
'abcd'
>>> read_stringnl(io.BytesIO(b"\n"))
Traceback (most recent call last):
...
ValueError: no string quotes around b''
>>> read_stringnl(io.BytesIO(b"\n"), stripquotes=False)
''
>>> read_stringnl(io.BytesIO(b"''\n"))
''
>>> read_stringnl(io.BytesIO(b'"abcd"'))
Traceback (most recent call last):
...
ValueError: no newline found when trying to read stringnl
Embedded escapes are undone in the result.
>>> read_stringnl(io.BytesIO(br"'a\n\\b\x00c\td'" + b"\n'e'"))
'a\n\\b\x00c\td'
�
z-no newline found when trying to read stringnlNr )� "� 'z,strinq quote %r not found at both ends of %rr$ zno string quotes around %rr �ascii)�readline�endswithr& �
startswith�codecs�
escape_decode�decode)r( rC � stripquotesr) �qr r r �
read_stringnl; s"
� rF �stringnlz�A newline-terminated string.
This is a repr-style string, with embedded escapes, and
bracketing quotes.
c C s t | dd�S )NF)rD )rF �r( r r r �read_stringnl_noescapet s rI �stringnl_noescapea A newline-terminated string.
This is a str-style string, without embedded escapes,
or bracketing quotes. It should consist solely of
printable ASCII characters.
c C s dt | �t | �f S )zp
>>> import io
>>> read_stringnl_noescape_pair(io.BytesIO(b"Queue\nEmpty\njunk"))
'Queue Empty'
z%s %s)rI rH r r r �read_stringnl_noescape_pair� s rK �stringnl_noescape_paira� A pair of newline-terminated strings.
These are str-style strings, without embedded
escapes, or bracketing quotes. They should
consist solely of printable ASCII characters.
The pair is returned as a single string, with
a single blank separating the two strings.
c C sL t | �}|dkst�| �|�}t|�|kr4|�d�S td|t|�f ��dS )z�
>>> import io
>>> read_string1(io.BytesIO(b"\x00"))
''
>>> read_string1(io.BytesIO(b"\x03abcdef"))
'abc'
r �latin-1z2expected %d bytes in a string1, but only %d remainN)r* r r% r. rC r& �r( r
r) r r r � read_string1� s
�rO �string1z�A counted string.
The first argument is a 1-byte unsigned int giving the number
of bytes in the string, and the second argument is that many
bytes.
c C sT t | �}|dk r td| ��| �|�}t|�|kr<|�d�S td|t|�f ��dS )aP
>>> import io
>>> read_string4(io.BytesIO(b"\x00\x00\x00\x00abc"))
''
>>> read_string4(io.BytesIO(b"\x03\x00\x00\x00abcdef"))
'abc'
>>> read_string4(io.BytesIO(b"\x00\x00\x00\x03abcdef"))
Traceback (most recent call last):
...
ValueError: expected 50331648 bytes in a string4, but only 6 remain
r zstring4 byte count < 0: %drM z2expected %d bytes in a string4, but only %d remainN)r3 r& r% r. rC rN r r r � read_string4� s
�rQ �string4z�A counted string.
The first argument is a 4-byte little-endian signed int giving
the number of bytes in the string, and the second argument is
that many bytes.
c C sF t | �}|dkst�| �|�}t|�|kr.|S td|t|�f ��dS )z�
>>> import io
>>> read_bytes1(io.BytesIO(b"\x00"))
b''
>>> read_bytes1(io.BytesIO(b"\x03abcdef"))
b'abc'
r z1expected %d bytes in a bytes1, but only %d remainN)r* r r% r. r& rN r r r � read_bytes1� s
�rS �bytes1z�A counted bytes string.
The first argument is a 1-byte unsigned int giving the number
of bytes, and the second argument is that many bytes.
c C s\ t | �}|dkst�|tjkr*td| ��| �|�}t|�|krD|S td|t|�f ��dS )aN
>>> import io
>>> read_bytes4(io.BytesIO(b"\x00\x00\x00\x00abc"))
b''
>>> read_bytes4(io.BytesIO(b"\x03\x00\x00\x00abcdef"))
b'abc'
>>> read_bytes4(io.BytesIO(b"\x00\x00\x00\x03abcdef"))
Traceback (most recent call last):
...
ValueError: expected 50331648 bytes in a bytes4, but only 6 remain
r z#bytes4 byte count > sys.maxsize: %dz1expected %d bytes in a bytes4, but only %d remainN)r5 r �sys�maxsizer& r% r. rN r r r � read_bytes4� s
�rW �bytes4z�A counted bytes string.
The first argument is a 4-byte little-endian unsigned int giving
the number of bytes, and the second argument is that many bytes.
c C s\ t | �}|dkst�|tjkr*td| ��| �|�}t|�|krD|S td|t|�f ��dS )a�
>>> import io, struct, sys
>>> read_bytes8(io.BytesIO(b"\x00\x00\x00\x00\x00\x00\x00\x00abc"))
b''
>>> read_bytes8(io.BytesIO(b"\x03\x00\x00\x00\x00\x00\x00\x00abcdef"))
b'abc'
>>> bigsize8 = struct.pack("<Q", sys.maxsize//3)
>>> read_bytes8(io.BytesIO(bigsize8 + b"abcdef")) #doctest: +ELLIPSIS
Traceback (most recent call last):
...
ValueError: expected ... bytes in a bytes8, but only 6 remain
r z#bytes8 byte count > sys.maxsize: %dz1expected %d bytes in a bytes8, but only %d remainN)r8 r rU rV r& r% r. rN r r r � read_bytes8 s
�rY �bytes8z�A counted bytes string.
The first argument is an 8-byte little-endian unsigned int giving
the number of bytes, and the second argument is that many bytes.
c C s` t | �}|dkst�|tjkr*td| ��| �|�}t|�|krHt|�S td|t|�f ��dS )a�
>>> import io, struct, sys
>>> read_bytearray8(io.BytesIO(b"\x00\x00\x00\x00\x00\x00\x00\x00abc"))
bytearray(b'')
>>> read_bytearray8(io.BytesIO(b"\x03\x00\x00\x00\x00\x00\x00\x00abcdef"))
bytearray(b'abc')
>>> bigsize8 = struct.pack("<Q", sys.maxsize//3)
>>> read_bytearray8(io.BytesIO(bigsize8 + b"abcdef")) #doctest: +ELLIPSIS
Traceback (most recent call last):
...
ValueError: expected ... bytes in a bytearray8, but only 6 remain
r z'bytearray8 byte count > sys.maxsize: %dz5expected %d bytes in a bytearray8, but only %d remainN)r8 r rU rV r& r% r. � bytearrayrN r r r �read_bytearray89 s
�r\ �
bytearray8z�A counted bytearray.
The first argument is an 8-byte little-endian unsigned int giving
the number of bytes, and the second argument is that many bytes.
c C s0 | � � }|�d�std��|dd� }t|d�S )zm
>>> import io
>>> read_unicodestringnl(io.BytesIO(b"abc\\uabcd\njunk")) == 'abc\uabcd'
True
r: z4no newline found when trying to read unicodestringnlNr zraw-unicode-escape)r> r? r& r r' r r r �read_unicodestringnl[ s
r^ �unicodestringnlz�A newline-terminated Unicode string.
This is raw-unicode-escape encoded, so consists of
printable ASCII characters, and may contain embedded
escape sequences.
c C sN t | �}|dkst�| �|�}t|�|kr6t|dd�S td|t|�f ��dS )a�
>>> import io
>>> s = 'abcd\uabcd'
>>> enc = s.encode('utf-8')
>>> enc
b'abcd\xea\xaf\x8d'
>>> n = bytes([len(enc)]) # little-endian 1-byte length
>>> t = read_unicodestring1(io.BytesIO(n + enc + b'junk'))
>>> s == t
True
>>> read_unicodestring1(io.BytesIO(n + enc[:-1]))
Traceback (most recent call last):
...
ValueError: expected 7 bytes in a unicodestring1, but only 6 remain
r �utf-8�
surrogatepassz9expected %d bytes in a unicodestring1, but only %d remainN)r* r r% r. r r& rN r r r �read_unicodestring1u s
�rb �unicodestring1aA A counted Unicode string.
The first argument is a 1-byte little-endian signed int
giving the number of bytes in the string, and the second
argument-- the UTF-8 encoding of the Unicode string --
contains that many bytes.
c C sd t | �}|dkst�|tjkr*td| ��| �|�}t|�|krLt|dd�S td|t|�f ��dS )a�
>>> import io
>>> s = 'abcd\uabcd'
>>> enc = s.encode('utf-8')
>>> enc
b'abcd\xea\xaf\x8d'
>>> n = bytes([len(enc), 0, 0, 0]) # little-endian 4-byte length
>>> t = read_unicodestring4(io.BytesIO(n + enc + b'junk'))
>>> s == t
True
>>> read_unicodestring4(io.BytesIO(n + enc[:-1]))
Traceback (most recent call last):
...
ValueError: expected 7 bytes in a unicodestring4, but only 6 remain
r z+unicodestring4 byte count > sys.maxsize: %dr` ra z9expected %d bytes in a unicodestring4, but only %d remainN)r5 r rU rV r& r% r. r rN r r r �read_unicodestring4� s
�rd �unicodestring4aA A counted Unicode string.
The first argument is a 4-byte little-endian signed int
giving the number of bytes in the string, and the second
argument-- the UTF-8 encoding of the Unicode string --
contains that many bytes.
c C sd t | �}|dkst�|tjkr*td| ��| �|�}t|�|krLt|dd�S td|t|�f ��dS )a�
>>> import io
>>> s = 'abcd\uabcd'
>>> enc = s.encode('utf-8')
>>> enc
b'abcd\xea\xaf\x8d'
>>> n = bytes([len(enc)]) + b'\0' * 7 # little-endian 8-byte length
>>> t = read_unicodestring8(io.BytesIO(n + enc + b'junk'))
>>> s == t
True
>>> read_unicodestring8(io.BytesIO(n + enc[:-1]))
Traceback (most recent call last):
...
ValueError: expected 7 bytes in a unicodestring8, but only 6 remain
r z+unicodestring8 byte count > sys.maxsize: %dr` ra z9expected %d bytes in a unicodestring8, but only %d remainN)r8 r rU rV r& r% r. r rN r r r �read_unicodestring8� s
�rf �unicodestring8aB A counted Unicode string.
The first argument is an 8-byte little-endian signed int
giving the number of bytes in the string, and the second
argument-- the UTF-8 encoding of the Unicode string --
contains that many bytes.
c C s. t | ddd�}|dkrdS |dkr&dS t|�S )z�
>>> import io
>>> read_decimalnl_short(io.BytesIO(b"1234\n56"))
1234
>>> read_decimalnl_short(io.BytesIO(b"1234L\n56"))
Traceback (most recent call last):
...
ValueError: invalid literal for int() with base 10: b'1234L'
F�rC rD s 00s 01T�rF r �r( �sr r r �read_decimalnl_short� s rl c C s2 t | ddd�}|dd� dkr*|dd� }t|�S )z�
>>> import io
>>> read_decimalnl_long(io.BytesIO(b"1234L\n56"))
1234
>>> read_decimalnl_long(io.BytesIO(b"123456789012345678901234L\n6"))
123456789012345678901234
Frh r N� Lri rj r r r �read_decimalnl_long s rn �decimalnl_shorta� A newline-terminated decimal integer literal.
This never has a trailing 'L', and the integer fit
in a short Python int on the box where the pickle
was written -- but there's no guarantee it will fit
in a short Python int on the box where the pickle
is read.
�decimalnl_longz�A newline-terminated decimal integer literal.
This has a trailing 'L', and can represent integers
of any size.
c C s t | ddd�}t|�S )zO
>>> import io
>>> read_floatnl(io.BytesIO(b"-1.25\n6"))
-1.25
Frh )rF �floatrj r r r � read_floatnl- s rr �floatnla� A newline-terminated decimal floating literal.
In general this requires 17 significant digits for roundtrip
identity, and pickling then unpickling infinities, NaNs, and
minus zero doesn't work across boxes, or on some boxes even
on itself (e.g., Windows can't read the strings it produces
for infinities or NaNs).
c C s0 | � d�}t|�dkr$td|�d S td��dS )z�
>>> import io, struct
>>> raw = struct.pack(">d", -1.25)
>>> raw
b'\xbf\xf4\x00\x00\x00\x00\x00\x00'
>>> read_float8(io.BytesIO(raw + b"\n"))
-1.25
r7 z>dr z(not enough data in stream to read float8Nr- r' r r r � read_float8C s
rt �float8a An 8-byte binary representation of a float, big-endian.
The format is unique to Python, and shared with the struct
module (format string '>d') "in theory" (the struct and pickle
implementations don't share the code -- they should). It's
strongly related to the IEEE-754 double format, and, in normal
cases, is in fact identical to the big-endian 754 double format.
On other boxes the dynamic range is limited to that of a 754
double, and "add a half and chop" rounding is used to reduce
the precision to 53 bits. However, even on a 754 box,
infinities, NaNs, and minus zero may not be handled correctly
(may not survive roundtrip pickling intact).
)� decode_longc C s. t | �}| �|�}t|�|kr&td��t|�S )a+
>>> import io
>>> read_long1(io.BytesIO(b"\x00"))
0
>>> read_long1(io.BytesIO(b"\x02\xff\x00"))
255
>>> read_long1(io.BytesIO(b"\x02\xff\x7f"))
32767
>>> read_long1(io.BytesIO(b"\x02\x00\xff"))
-256
>>> read_long1(io.BytesIO(b"\x02\x00\x80"))
-32768
z'not enough data in stream to read long1)r* r% r. r& rv rN r r r �
read_long1i s
rw �long1a A binary long, little-endian, using 1-byte size.
This first reads one byte as an unsigned size, then reads that
many bytes and interprets them as a little-endian 2's-complement long.
If the size is 0, that's taken as a shortcut for the long 0L.
c C sB t | �}|dk r td| ��| �|�}t|�|kr:td��t|�S )ag
>>> import io
>>> read_long4(io.BytesIO(b"\x02\x00\x00\x00\xff\x00"))
255
>>> read_long4(io.BytesIO(b"\x02\x00\x00\x00\xff\x7f"))
32767
>>> read_long4(io.BytesIO(b"\x02\x00\x00\x00\x00\xff"))
-256
>>> read_long4(io.BytesIO(b"\x02\x00\x00\x00\x00\x80"))
-32768
>>> read_long1(io.BytesIO(b"\x00\x00\x00\x00"))
0
r zlong4 byte count < 0: %dz'not enough data in stream to read long4)r3 r& r% r. rv rN r r r �
read_long4� s
ry �long4a� A binary representation of a long, little-endian.
This first reads four bytes as a signed size (but requires the
size to be >= 0), then reads that many bytes and interprets them
as a little-endian 2's-complement long. If the size is 0, that's taken
as a shortcut for the int 0, although LONG1 should really be used
then instead (and in any case where # of bytes < 256).
c @ s e Zd ZdZdd� Zdd� ZdS )� StackObject�r �obtyper c C sl t |t�st�|| _t |t�s,t |t�s,t�t |t�rN|D ]}t |t�s:t�q:|| _t |t�sbt�|| _d S �N)r r r r �type�tupler} r )r r r} r Z containedr r r r � s
zStackObject.__init__c C s | j S r~ �r )r r r r �__repr__� s zStackObject.__repr__N)r r r! r" r r� r r r r r{ � s
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int whenever possible.
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on most boxes).
In general, FLOAT cannot be used to transport infinities, NaNs, or
minus zero across boxes (or even on a single box, if the platform C
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cut it back to 53 significant bits).
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of the stack.
Stack before: ... pydict markobject key_1 value_1 ... key_n value_n
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Stack before: ... pyset markobject item_1 ... item_n
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�GET�gz�Read an object from the memo and push it on the stack.
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�PUT�pz�Store the stack top into the memo. The stack is not popped.
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�BINPUTrE z�Store the stack top into the memo. The stack is not popped.
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The index of the memo location to write is the number of
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ZEXT1� a� Extension code.
This code and the similar EXT2 and EXT4 allow using a registry
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It is envisioned that through a global negotiation and
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ints and object names.
In order to guarantee pickle interchangeability, the extension
code registry ought to be global, although a range of codes may
be reserved for private use.
EXT1 has a 1-byte integer argument. This is used to index into the
extension registry, and the object at that index is pushed on the stack.
ZEXT2� zNExtension code.
See EXT1. EXT2 has a two-byte integer argument.
ZEXT4� zOExtension code.
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taken as a module name, and the second as a class name. The class
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object returned by self.find_class(module, class) is pushed on the
stack, so unpickling subclasses can override this form of lookup.
Z STACK_GLOBAL� z7Push a global object (module.attr) on the stack.
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The opcode is named to remind of the __reduce__() method.
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by a __reduce__ method. Applying the callable to the argtuple is
supposed to reproduce the original object, or at least get it started.
If the __reduce__ method returns a 3-tuple, the last component is an
argument to be passed to the object's __setstate__, and then the REDUCE
opcode is followed by code to create setstate's argument, and then a
BUILD opcode to apply __setstate__ to that argument.
If not isinstance(callable, type), REDUCE complains unless the
callable has been registered with the copyreg module's
safe_constructors dict, or the callable has a magic
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why it does this, but I've sure seen this complaint often enough when
I didn't want to <wink>.
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where anyobject may have been mutated, as follows:
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is called.
Else the argument must be a dict, the object must have a __dict__, and
the object is updated via
anyobject.__dict__.update(argument)
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INST is followed by two newline-terminated strings, giving a
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GLOBAL for more details about that). self.find_class(module, name)
is used to get a class object.
In addition, all the objects on the stack following the topmost
markobject are gathered into a tuple and popped (along with the
topmost markobject), just as for the TUPLE opcode.
Now it gets complicated. If all of these are true:
+ The argtuple is empty (markobject was at the top of the stack
at the start).
+ The class object does not have a __getinitargs__ attribute.
then we want to create an old-style class instance without invoking
its __init__() method (pickle has waffled on this over the years; not
calling __init__() is current wisdom). In this case, an instance of
an old-style dummy class is created, and then we try to rebind its
__class__ attribute to the desired class object. If this succeeds,
the new instance object is pushed on the stack, and we're done.
Else (the argtuple is not empty, it's not an old-style class object,
or the class object does have a __getinitargs__ attribute), the code
first insists that the class object have a __safe_for_unpickling__
attribute. Unlike as for the __safe_for_unpickling__ check in REDUCE,
it doesn't matter whether this attribute has a true or false value, it
only matters whether it exists (XXX this is a bug). If
__safe_for_unpickling__ doesn't exist, UnpicklingError is raised.
Else (the class object does have a __safe_for_unpickling__ attr),
the class object obtained from INST's arguments is applied to the
argtuple obtained from the stack, and the resulting instance object
is pushed on the stack.
NOTE: checks for __safe_for_unpickling__ went away in Python 2.3.
NOTE: the distinction between old-style and new-style classes does
not make sense in Python 3.
ZOBJ�oa� Build a class instance.
This is the protocol 1 version of protocol 0's INST opcode, and is
very much like it. The major difference is that the class object
is taken off the stack, allowing it to be retrieved from the memo
repeatedly if several instances of the same class are created. This
can be much more efficient (in both time and space) than repeatedly
embedding the module and class names in INST opcodes.
Unlike INST, OBJ takes no arguments from the opcode stream. Instead
the class object is taken off the stack, immediately above the
topmost markobject:
Stack before: ... markobject classobject stackslice
Stack after: ... new_instance_object
As for INST, the remainder of the stack above the markobject is
gathered into an argument tuple, and then the logic seems identical,
except that no __safe_for_unpickling__ check is done (XXX this is
a bug). See INST for the gory details.
NOTE: In Python 2.3, INST and OBJ are identical except for how they
get the class object. That was always the intent; the implementations
had diverged for accidental reasons.
ZNEWOBJ� aL Build an object instance.
The stack before should be thought of as containing a class
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onto the stack.
Z NEWOBJ_EX� au Build an object instance.
The stack before should be thought of as containing a class
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cls.__new__(cls, *args, *kwargs) is pushed back onto the stack.
�PROTO� z�Protocol version indicator.
For protocol 2 and above, a pickle must start with this opcode.
The argument is the protocol version, an int in range(2, 256).
�STOP�.z�Stop the unpickling machine.
Every pickle ends with this opcode. The object at the top of the stack
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�FRAME� z�Indicate the beginning of a new frame.
The unpickler may use this opcode to safely prefetch data from its
underlying stream.
ZPERSID�Pa Push an object identified by a persistent ID.
The pickle module doesn't define what a persistent ID means. PERSID's
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The unpickler passes this string to self.persistent_load(). Whatever
object that returns is pushed on the stack. There is no implementation
of persistent_load() in Python's unpickler: it must be supplied by an
unpickler subclass.
Z BINPERSID�QaX Push an object identified by a persistent ID.
Like PERSID, except the persistent ID is popped off the stack (instead
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� |�|� q0td||d� |�rjtd| ��dS ) aK Produce a symbolic disassembly of a pickle.
'pickle' is a file-like object, or string, containing a (at least one)
pickle. The pickle is disassembled from the current position, through
the first STOP opcode encountered.
Optional arg 'out' is a file-like object to which the disassembly is
printed. It defaults to sys.stdout.
Optional arg 'memo' is a Python dict, used as the pickle's memo. It
may be mutated by dis(), if the pickle contains PUT or BINPUT opcodes.
Passing the same memo object to another dis() call then allows disassembly
to proceed across multiple pickles that were all created by the same
pickler with the same memo. Ordinarily you don't need to worry about this.
Optional arg 'indentlevel' is the number of blanks by which to indent
a new MARK level. It defaults to 4.
Optional arg 'annotate' if nonzero instructs dis() to add short
description of the opcode on each line of disassembled output.
The value given to 'annotate' must be an integer and is used as a
hint for the column where annotation should start. The default
value is 0, meaning no annotations.
In addition to printing the disassembly, some sanity checks are made:
+ All embedded opcode arguments "make sense".
+ Explicit and implicit pop operations have enough items on the stack.
+ When an opcode implicitly refers to a markobject, a markobject is
actually on the stack.
+ A memo entry isn't referenced before it's defined.
+ The markobject isn't stored in the memo.
+ A memo entry isn't redefined.
Nr � z%5d:)�end�filez %-4s %s%sr$ r� z (MARK at unknown opcode offset)z (MARK at %d)r zno MARK exists on stack)r� r� r� r� r� z(as %d)zmemo key %r already definedz'stack is empty -- can't store into memoz"can't store markobject in the memo)r� r� r� z&memo key %r has never been stored into�
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>>> import pickle
>>> x = [1, 2, (3, 4), {b'abc': "def"}]
>>> pkl0 = pickle.dumps(x, 0)
>>> dis(pkl0)
0: ( MARK
1: l LIST (MARK at 0)
2: p PUT 0
5: I INT 1
8: a APPEND
9: I INT 2
12: a APPEND
13: ( MARK
14: I INT 3
17: I INT 4
20: t TUPLE (MARK at 13)
21: p PUT 1
24: a APPEND
25: ( MARK
26: d DICT (MARK at 25)
27: p PUT 2
30: c GLOBAL '_codecs encode'
46: p PUT 3
49: ( MARK
50: V UNICODE 'abc'
55: p PUT 4
58: V UNICODE 'latin1'
66: p PUT 5
69: t TUPLE (MARK at 49)
70: p PUT 6
73: R REDUCE
74: p PUT 7
77: V UNICODE 'def'
82: p PUT 8
85: s SETITEM
86: a APPEND
87: . STOP
highest protocol among opcodes = 0
Try again with a "binary" pickle.
>>> pkl1 = pickle.dumps(x, 1)
>>> dis(pkl1)
0: ] EMPTY_LIST
1: q BINPUT 0
3: ( MARK
4: K BININT1 1
6: K BININT1 2
8: ( MARK
9: K BININT1 3
11: K BININT1 4
13: t TUPLE (MARK at 8)
14: q BINPUT 1
16: } EMPTY_DICT
17: q BINPUT 2
19: c GLOBAL '_codecs encode'
35: q BINPUT 3
37: ( MARK
38: X BINUNICODE 'abc'
46: q BINPUT 4
48: X BINUNICODE 'latin1'
59: q BINPUT 5
61: t TUPLE (MARK at 37)
62: q BINPUT 6
64: R REDUCE
65: q BINPUT 7
67: X BINUNICODE 'def'
75: q BINPUT 8
77: s SETITEM
78: e APPENDS (MARK at 3)
79: . STOP
highest protocol among opcodes = 1
Exercise the INST/OBJ/BUILD family.
>>> import pickletools
>>> dis(pickle.dumps(pickletools.dis, 0))
0: c GLOBAL 'pickletools dis'
17: p PUT 0
20: . STOP
highest protocol among opcodes = 0
>>> from pickletools import _Example
>>> x = [_Example(42)] * 2
>>> dis(pickle.dumps(x, 0))
0: ( MARK
1: l LIST (MARK at 0)
2: p PUT 0
5: c GLOBAL 'copy_reg _reconstructor'
30: p PUT 1
33: ( MARK
34: c GLOBAL 'pickletools _Example'
56: p PUT 2
59: c GLOBAL '__builtin__ object'
79: p PUT 3
82: N NONE
83: t TUPLE (MARK at 33)
84: p PUT 4
87: R REDUCE
88: p PUT 5
91: ( MARK
92: d DICT (MARK at 91)
93: p PUT 6
96: V UNICODE 'value'
103: p PUT 7
106: I INT 42
110: s SETITEM
111: b BUILD
112: a APPEND
113: g GET 5
116: a APPEND
117: . STOP
highest protocol among opcodes = 0
>>> dis(pickle.dumps(x, 1))
0: ] EMPTY_LIST
1: q BINPUT 0
3: ( MARK
4: c GLOBAL 'copy_reg _reconstructor'
29: q BINPUT 1
31: ( MARK
32: c GLOBAL 'pickletools _Example'
54: q BINPUT 2
56: c GLOBAL '__builtin__ object'
76: q BINPUT 3
78: N NONE
79: t TUPLE (MARK at 31)
80: q BINPUT 4
82: R REDUCE
83: q BINPUT 5
85: } EMPTY_DICT
86: q BINPUT 6
88: X BINUNICODE 'value'
98: q BINPUT 7
100: K BININT1 42
102: s SETITEM
103: b BUILD
104: h BINGET 5
106: e APPENDS (MARK at 3)
107: . STOP
highest protocol among opcodes = 1
Try "the canonical" recursive-object test.
>>> L = []
>>> T = L,
>>> L.append(T)
>>> L[0] is T
True
>>> T[0] is L
True
>>> L[0][0] is L
True
>>> T[0][0] is T
True
>>> dis(pickle.dumps(L, 0))
0: ( MARK
1: l LIST (MARK at 0)
2: p PUT 0
5: ( MARK
6: g GET 0
9: t TUPLE (MARK at 5)
10: p PUT 1
13: a APPEND
14: . STOP
highest protocol among opcodes = 0
>>> dis(pickle.dumps(L, 1))
0: ] EMPTY_LIST
1: q BINPUT 0
3: ( MARK
4: h BINGET 0
6: t TUPLE (MARK at 3)
7: q BINPUT 1
9: a APPEND
10: . STOP
highest protocol among opcodes = 1
Note that, in the protocol 0 pickle of the recursive tuple, the disassembler
has to emulate the stack in order to realize that the POP opcode at 16 gets
rid of the MARK at 0.
>>> dis(pickle.dumps(T, 0))
0: ( MARK
1: ( MARK
2: l LIST (MARK at 1)
3: p PUT 0
6: ( MARK
7: g GET 0
10: t TUPLE (MARK at 6)
11: p PUT 1
14: a APPEND
15: 0 POP
16: 0 POP (MARK at 0)
17: g GET 1
20: . STOP
highest protocol among opcodes = 0
>>> dis(pickle.dumps(T, 1))
0: ( MARK
1: ] EMPTY_LIST
2: q BINPUT 0
4: ( MARK
5: h BINGET 0
7: t TUPLE (MARK at 4)
8: q BINPUT 1
10: a APPEND
11: 1 POP_MARK (MARK at 0)
12: h BINGET 1
14: . STOP
highest protocol among opcodes = 1
Try protocol 2.
>>> dis(pickle.dumps(L, 2))
0: \x80 PROTO 2
2: ] EMPTY_LIST
3: q BINPUT 0
5: h BINGET 0
7: \x85 TUPLE1
8: q BINPUT 1
10: a APPEND
11: . STOP
highest protocol among opcodes = 2
>>> dis(pickle.dumps(T, 2))
0: \x80 PROTO 2
2: ] EMPTY_LIST
3: q BINPUT 0
5: h BINGET 0
7: \x85 TUPLE1
8: q BINPUT 1
10: a APPEND
11: 0 POP
12: h BINGET 1
14: . STOP
highest protocol among opcodes = 2
Try protocol 3 with annotations:
>>> dis(pickle.dumps(T, 3), annotate=1)
0: \x80 PROTO 3 Protocol version indicator.
2: ] EMPTY_LIST Push an empty list.
3: q BINPUT 0 Store the stack top into the memo. The stack is not popped.
5: h BINGET 0 Read an object from the memo and push it on the stack.
7: \x85 TUPLE1 Build a one-tuple out of the topmost item on the stack.
8: q BINPUT 1 Store the stack top into the memo. The stack is not popped.
10: a APPEND Append an object to a list.
11: 0 POP Discard the top stack item, shrinking the stack by one item.
12: h BINGET 1 Read an object from the memo and push it on the stack.
14: . STOP Stop the unpickling machine.
highest protocol among opcodes = 2
a=
>>> import pickle
>>> import io
>>> f = io.BytesIO()
>>> p = pickle.Pickler(f, 2)
>>> x = [1, 2, 3]
>>> p.dump(x)
>>> p.dump(x)
>>> f.seek(0)
0
>>> memo = {}
>>> dis(f, memo=memo)
0: \x80 PROTO 2
2: ] EMPTY_LIST
3: q BINPUT 0
5: ( MARK
6: K BININT1 1
8: K BININT1 2
10: K BININT1 3
12: e APPENDS (MARK at 5)
13: . STOP
highest protocol among opcodes = 2
>>> dis(f, memo=memo)
14: \x80 PROTO 2
16: h BINGET 0
18: . STOP
highest protocol among opcodes = 2
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calendar.cpython-38.opt-1.pyc 0000644 00000064672 15145007335 0011726 0 ustar 00 U
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Base calendar class. This class doesn't do any formatting. It simply
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Return a matrix (list of lists) representing a month's calendar.
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c s g | ]}� ||d � �qS �rK r r3 �Zdatesr r r6 � s z/Calendar.monthdatescalendar.<locals>.<listcomp>r rK )�listrd rH �len�r rQ r
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c s g | ]}� ||d � �qS rl r r3 ��daysr r r6 � s z/Calendar.monthdays2calendar.<locals>.<listcomp>r rK )rn ri rH ro rp r rr r �monthdays2calendar� s zCalendar.monthdays2calendarc s. t | �||��� � fdd�tdt� �d�D �S )z�
Return a matrix representing a month's calendar.
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c s g | ]}� ||d � �qS rl r r3 rr r r r6 � s z.Calendar.monthdayscalendar.<locals>.<listcomp>r rK )rn rg rH ro rp r rr r �monthdayscalendar� s zCalendar.monthdayscalendar� c s> ��fdd�t ttd �D �� � �fdd�t dt� ���D �S )a'
Return the data for the specified year ready for formatting. The return
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Each month contains between 4 and 6 weeks and each week contains 1-7
days. Days are datetime.date objects.
c s g | ]}� � �|��qS r )rq r3 �r rQ r r r6 s �z.Calendar.yeardatescalendar.<locals>.<listcomp>r7 c s g | ]}� ||� � �qS r r r3 ��months�widthr r r6 s r �rH �Januaryro �r rQ rz r �ry r rz rQ r �yeardatescalendar� s �zCalendar.yeardatescalendarc s> ��fdd�t ttd �D �� � �fdd�t dt� ���D �S )z�
Return the data for the specified year ready for formatting (similar to
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(day number, weekday number) tuples. Day numbers outside this month are
zero.
c s g | ]}� � �|��qS r )rt r3 rw r r r6 s �z.Calendar.yeardays2calendar.<locals>.<listcomp>r7 c s g | ]}� ||� � �qS r r r3 rx r r r6 s r r{ r} r r~ r �yeardays2calendar s �zCalendar.yeardays2calendarc s> ��fdd�t ttd �D �� � �fdd�t dt� ���D �S )z�
Return the data for the specified year ready for formatting (similar to
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�rX Y nX dS )&a� An RFC 5321 smtp proxy with optional RFC 1870 and RFC 6531 extensions.
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Print the version number and exit.
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Use `classname' as the concrete SMTP proxy class. Uses `PureProxy' by
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Restrict the total size of the incoming message to "limit" number of
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Enable the SMTPUTF8 extension and behave as an RFC 6531 smtp proxy.
--debug
-d
Turn on debugging prints.
--help
-h
Print this message and exit.
Version: %(__version__)s
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�zSMTPChannel.__rcpttosc C s t dtd� || _d S )NzOSetting __rcpttos attribute on SMTPChannel is deprecated, set 'rcpttos' insteadr_ rm rc r r r rn � s
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�zSMTPChannel.__datac C s t dtd� || _d S )NzRSetting __data attribute on SMTPChannel is deprecated, set 'received_data' insteadr_ ro rc r r r rp s
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�zSMTPChannel.__fqdnc C s t dtd� || _d S )NzISetting __fqdn attribute on SMTPChannel is deprecated, set 'fqdn' insteadr_ rq rc r r r rr s
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�zSMTPChannel.__peerc C s t dtd� || _d S )NzISetting __peer attribute on SMTPChannel is deprecated, set 'peer' insteadr_ rs rc r r r rt s
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�zSMTPChannel.__addrc C s t dtd� || _d S )NzISetting __addr attribute on SMTPChannel is deprecated, set 'addr' insteadr_ rw rc r r r rx 0 s
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r a9 Defines the interface for stateless encoders/decoders.
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r� rE c C s4 || _ || _|| _|||�| _|||�| _|| _dS )a� Creates a StreamRecoder instance which implements a two-way
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stream must be a file-like object.
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encoding specifies the encoding which is to be used for the
file.
errors may be given to define the error handling. It defaults
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buffering has the same meaning as for the builtin open() API.
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>>> s = NNTP('news')
>>> resp, count, first, last, name = s.group('comp.lang.python')
>>> print('Group', name, 'has', count, 'articles, range', first, 'to', last)
Group comp.lang.python has 51 articles, range 5770 to 5821
>>> resp, subs = s.xhdr('subject', '{0}-{1}'.format(first, last))
>>> resp = s.quit()
>>>
Here 'resp' is the server response line.
Error responses are turned into exceptions.
To post an article from a file:
>>> f = open(filename, 'rb') # file containing article, including header
>>> resp = s.post(f)
>>>
For descriptions of all methods, read the comments in the code below.
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|�fS )z�Process a NEWGROUPS command. Arguments:
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|sr|
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z_NNTPBase._statparsec C s | � |�}| �|�S )z/Internal: process a STAT, NEXT or LAST command.)r� r� )r r; r� r r r �_statcmd� s
z_NNTPBase._statcmdc C s" |r| � d�|��S | � d�S dS )a( Process a STAT command. Argument:
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zSTAT {0}ZSTATN)r� rV )r � message_specr r r �stat� s z_NNTPBase.statc C s
| � d�S )z;Process a NEXT command. No arguments. Return as for STAT.ZNEXT�r� rn r r r �next� s z_NNTPBase.nextc C s
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NzHEAD {0}ZHEAD�rV r� �r r� ra r� r r r �head� s z_NNTPBase.headc C s$ |dk rd� |�}nd}| �||�S )a+ Process a BODY command. Argument:
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NzBODY {0}ZBODYr� r� r r r �body� s z_NNTPBase.bodyc C s$ |dk rd� |�}nd}| �||�S )a5 Process an ARTICLE command. Argument:
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Nz ARTICLE {0}ZARTICLEr� r� r r r �article� s z_NNTPBase.articlec C s
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ZSLAVE)r� rn r r r �slave s z_NNTPBase.slavec sD t �d�� | �d�||�|�\}}� fdd��|�fdd�|D �fS )ai Process an XHDR command (optional server extension). Arguments:
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z^([0-9]+) ?(.*)
?z XHDR {0} {1}c s � � | �}|r|�dd�S | S )Nr3 rK )r� r" )r; �m)�patr r �
remove_number s
z%_NNTPBase.xhdr.<locals>.remove_numberc s g | ] }� |��qS r r r� )r� r r r� s z"_NNTPBase.xhdr.<locals>.<listcomp>)r� r� r� rV )r Zhdrr� ra r� r r )r� r� r �xhdr s
z_NNTPBase.xhdrc C s. | � d�||�|�\}}| �� }|t||�fS )aF Process an XOVER command (optional server extension) Arguments:
- start: start of range
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XOVER {0}-{1})r� rV r� rJ )r �start�endra r� r r: r r r �xover s
�z_NNTPBase.xoverc C sx d| j krdnd}t|ttf�r>|\}}|d�||p6d�7 }n|dk rR|d | }| �||�\}}| �� }|t||�fS )a� Process an OVER command. If the command isn't supported, fall
back to XOVER. Arguments:
- message_spec:
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information about
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if end is None, information up to the newest message will be
retrieved
- or None, indicating the current article number must be used
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ZOVERZXOVERz {0}-{1}r) Nr{ )re r+ �tupler� rV r� r� rJ ) r r� ra r� r� r� r� r r: r r r �over* s z_NNTPBase.overc C sf t �dtd� t�d�}| �d| |�\}}g }|D ](}|�|�� �}|r4|�|� dd�� q4||fS )z�Process an XGTITLE command (optional server extension) Arguments:
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z_NNTPBase.xgtitlec C sl t �dtd� | �d�|��}|�d�s0t|��z|�� \}}W n tk
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ZDATEZ111rK r3 � N)r� rE r rB r9 r
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Public class: IMAP4
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Instantiate with: IMAP4([host[, port]])
host - host's name (default: localhost);
port - port number (default: standard IMAP4 port).
All IMAP4rev1 commands are supported by methods of the same
name (in lower-case).
All arguments to commands are converted to strings, except for
AUTHENTICATE, and the last argument to APPEND which is passed as
an IMAP4 literal. If necessary (the string contains any
non-printing characters or white-space and isn't enclosed with
either parentheses or double quotes) each string is quoted.
However, the 'password' argument to the LOGIN command is always
quoted. If you want to avoid having an argument string quoted
(eg: the 'flags' argument to STORE) then enclose the string in
parentheses (eg: "(\Deleted)").
Each command returns a tuple: (type, [data, ...]) where 'type'
is usually 'OK' or 'NO', and 'data' is either the text from the
tagged response, or untagged results from command. Each 'data'
is either a string, or a tuple. If a tuple, then the first part
is the header of the response, and the second part contains
the data (ie: 'literal' value).
Errors raise the exception class <instance>.error("<reason>").
IMAP4 server errors raise <instance>.abort("<reason>"),
which is a sub-class of 'error'. Mailbox status changes
from READ-WRITE to READ-ONLY raise the exception class
<instance>.readonly("<reason>"), which is a sub-class of 'abort'.
"error" exceptions imply a program error.
"abort" exceptions imply the connection should be reset, and
the command re-tried.
"readonly" exceptions imply the command should be re-tried.
Note: to use this module, you must read the RFCs pertaining to the
IMAP4 protocol, as the semantics of the arguments to each IMAP4
command are left to the invoker, not to mention the results. Also,
most IMAP servers implement a sub-set of the commands available here.
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r� Y nX � Y nX d S )Nr rB Fr )�Debug�debug�state�literal�tagged_commands�untagged_responses�continuation_response� is_readonly�tagnum�_tls_established� _mode_ascii�open�_connect� Exception�shutdown�OSError��self�host�portr= r= r> �__init__� s& zIMAP4.__init__c C s0 d| _ d| _t�ttj�| _t�ttj�| _d S )NF�ascii) � utf8_enabled� _encoding�re�compile�_Literal�ASCII�Literal�_Untagged_status�Untagged_status�rT r= r= r> rM � s zIMAP4._mode_asciic C s( d| _ d| _t�t�| _t�t�| _d S )NT�utf-8)rY rZ r[ r\ r] r_ r` ra rb r= r= r> �
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r. Y nX d S )Nr )rE �logoutrR )rT �argsr= r= r> �__exit__ s
zIMAP4.__exit__c C s4 | j s
d n| j }t�d| | j | j� t�|| jf�S )Nz imaplib.open)rU �sys�auditrV �socketZcreate_connection)rT rU r= r= r> �_create_socket s zIMAP4._create_socketc C s( || _ || _| �� | _| j�d�| _dS )z�Setup connection to remote server on "host:port"
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IMAP4.openc C s | j �|�S �z Read 'size' bytes from remote.)r� �read�rT �sizer= r= r> r� 3 s z
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r^ } z"|jtjkrNt |dd�dkrN� W 5 d}~X Y nX W 5 | j�� X dS )� Close I/O established in "open".Zwinerrorr i&' N)
r� �closer� rQ r} Z SHUT_RDWRrR �errnoZENOTCONNrq )rT �excr= r= r> rQ F s
�zIMAP4.shutdownc C s | j S )zfReturn socket instance used to connect to IMAP4 server.
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)r� rb r= r= r> r} V s z IMAP4.socketc C sB d}| � ddg|�\}}|d r(||fS | �� \}}| � |||�S )a Return most recent 'RECENT' responses if any exist,
else prompt server for an update using the 'NOOP' command.
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else list of RECENT responses, most recent last.
ZRECENTre N���)�_untagged_response�noop�rT �name�typ�datr= r= r> �recentb s z IMAP4.recentc C s | � |dg|�� �S )z�Return data for response 'code' if received, or None.
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(code, [data]) = <instance>.response(code)
N)r� �upper)rT �coder= r= r> �responses s zIMAP4.responsec C sx d}|s d}|r.|d |d fdkr2d| }nd}|r@t |�}nd}t�t|�}| jrbd| d }|| _| �||||�S )
z�Append message to named mailbox.
(typ, [data]) = <instance>.append(mailbox, flags, date_time, message)
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r �INBOXr r� ��(�)�(%s)Ns UTF8 (� ))r �MapCRLF�sub�CRLFrY rF �_simple_command)rT �mailbox�flags� date_time�messager� rF r= r= r> �append� s
z IMAP4.appendc C sP |� � }t|�j| _| �d|�\}}|dkrB| �|d �dd���d| _||fS )as Authenticate command - requires response processing.
'mechanism' specifies which authentication mechanism is to
be used - it must appear in <instance>.capabilities in the
form AUTH=<mechanism>.
'authobject' must be a callable object:
data = authobject(response)
It will be called to process server continuation responses; the
response argument it is passed will be a bytes. It should return bytes
data that will be base64 encoded and sent to the server. It should
return None if the client abort response '*' should be sent instead.
r re r� rc �replacer )r� �_Authenticator�processrF r� r? �decoderE )rT Z mechanismZ
authobject�mechr� r� r= r= r> � authenticate� s zIMAP4.authenticatec C s d}| � |�\}}| �|||�S )zT(typ, [data]) = <instance>.capability()
Fetch capabilities list from server.r �r� r� r� r= r= r> �
capability� s zIMAP4.capabilityc C s
| � d�S )zRCheckpoint mailbox on server.
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r �r� rb r= r= r> �check� s z IMAP4.checkc C s$ z| �d�\}}W 5 d| _ X ||fS )z�Close currently selected mailbox.
Deleted messages are removed from writable mailbox.
This is the recommended command before 'LOGOUT'.
(typ, [data]) = <instance>.close()
r r )rE r� �rT r� r� r= r= r> r� � s z IMAP4.closec C s | � d||�S )z�Copy 'message_set' messages onto end of 'new_mailbox'.
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r r� )rT � message_setZ new_mailboxr= r= r> �copy� s z
IMAP4.copyc C s | � d|�S )zPCreate new mailbox.
(typ, [data]) = <instance>.create(mailbox)
r r� �rT r� r= r= r> �create� s z IMAP4.createc C s | � d|�S )zPDelete old mailbox.
(typ, [data]) = <instance>.delete(mailbox)
r r� r� r= r= r> �delete� s z IMAP4.deletec C s | � d||�S )z�Delete the ACLs (remove any rights) set for who on mailbox.
(typ, [data]) = <instance>.deleteacl(mailbox, who)
r r� )rT r� �whor= r= r> � deleteacl� s zIMAP4.deleteaclc C sH d| j krt�d��| �d|�\}}|dkr@d|�� kr@| �� ||fS )zkSend an RFC5161 enable string to the server.
(typ, [data]) = <intance>.enable(capability)
r z Server does not support ENABLEre z UTF8=ACCEPT)rm r r? r� r� rd )rT r� r� r� r= r= r> �enable� s
z IMAP4.enablec C s d}| � |�\}}| �|||�S )z�Permanently remove deleted items from selected mailbox.
Generates 'EXPUNGE' response for each deleted message.
(typ, [data]) = <instance>.expunge()
'data' is list of 'EXPUNGE'd message numbers in order received.
r r� r� r= r= r> �expunge s z
IMAP4.expungec C s$ d}| � |||�\}}| �|||�S )a# Fetch (parts of) messages.
(typ, [data, ...]) = <instance>.fetch(message_set, message_parts)
'message_parts' should be a string of selected parts
enclosed in parentheses, eg: "(UID BODY[TEXT])".
'data' are tuples of message part envelope and data.
r r� )rT r� Z
message_partsr� r� r� r= r= r> �fetch s
z IMAP4.fetchc C s | � d|�\}}| �||d�S )zXGet the ACLs for a mailbox.
(typ, [data]) = <instance>.getacl(mailbox)
r ZACLr� �rT r� r� r� r= r= r> �getacl s z IMAP4.getaclc C s" | � d|||�\}}| �||d�S )za(typ, [data]) = <instance>.getannotation(mailbox, entry, attribute)
Retrieve ANNOTATIONs.r �
ANNOTATIONr� )rT r� �entryZ attributer� r� r= r= r> �
getannotation( s zIMAP4.getannotationc C s | � d|�\}}| �||d�S )z�Get the quota root's resource usage and limits.
Part of the IMAP4 QUOTA extension defined in rfc2087.
(typ, [data]) = <instance>.getquota(root)
r! �QUOTAr� )rT �rootr� r� r= r= r> �getquota0 s zIMAP4.getquotac C s@ | � d|�\}}| �||d�\}}| �||d�\}}|||gfS )z�Get the list of quota roots for the named mailbox.
(typ, [[QUOTAROOT responses...], [QUOTA responses]]) = <instance>.getquotaroot(mailbox)
r" r� Z QUOTAROOTr� )rT r� r� r� ZquotaZ quotarootr= r= r> � getquotaroot; s zIMAP4.getquotaroot�""�*c C s$ d}| � |||�\}}| �|||�S )z�List mailbox names in directory matching pattern.
(typ, [data]) = <instance>.list(directory='""', pattern='*')
'data' is list of LIST responses.
r$ r� �rT Z directory�patternr� r� r� r= r= r> �listF s z
IMAP4.listc C s< | � d|| �|��\}}|dkr.| �|d ��d| _||fS )z�Identify client using plaintext password.
(typ, [data]) = <instance>.login(user, password)
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r% re r� r )r� �_quoter? rE )rT �user�passwordr� r� r= r= r> �loginR s
z IMAP4.loginc C s || | _ | _| �d| j�S )zr Force use of CRAM-MD5 authentication.
(typ, [data]) = <instance>.login_cram_md5(user, password)
zCRAM-MD5)r� r� r� �_CRAM_MD5_AUTH)rT r� r� r= r= r> �login_cram_md5` s zIMAP4.login_cram_md5c C sB ddl }t| jt�r | j�d�n| j}| jd |�||d��� S )z1 Authobject to use with CRAM-MD5 authentication. r Nrc � Zmd5)�hmac�
isinstancer� �str�encoder� ZHMACZ hexdigest)rT Z challenger� �pwdr= r= r> r� i s
�zIMAP4._CRAM_MD5_AUTHc C s$ d| _ | �d�\}}| �� ||fS )z|Shutdown connection to server.
(typ, [data]) = <instance>.logout()
Returns server 'BYE' response.
r )rE r� rQ r� r= r= r> rx q s z IMAP4.logoutc C s$ d}| � |||�\}}| �|||�S )z�List 'subscribed' mailbox names in directory matching pattern.
(typ, [data, ...]) = <instance>.lsub(directory='""', pattern='*')
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r& r� r� r= r= r> �lsub~ s z
IMAP4.lsubc C s | � d|�\}}| �||d�S )z�Show my ACLs for a mailbox (i.e. the rights that I have on mailbox).
(typ, [data]) = <instance>.myrights(mailbox)
r# r� r� r= r= r> �myrights� s zIMAP4.myrightsc C s d}| � |�\}}| �|||�S )zb Returns IMAP namespaces ala rfc2342
(typ, [data, ...]) = <instance>.namespace()
r' r� r� r= r= r> � namespace� s zIMAP4.namespacec C s
| � d�S )zFSend NOOP command.
(typ, [data]) = <instance>.noop()
r( r� rb r= r= r> r� � s z
IMAP4.noopc C s( d}| � |||||�\}}| �||d�S )z�Fetch truncated part of a message.
(typ, [data, ...]) = <instance>.partial(message_num, message_part, start, length)
'data' is tuple of message part envelope and data.
r) r r� )rT Z message_numZ message_part�startZlengthr� r� r� r= r= r> �partial� s z
IMAP4.partialc C s d}| � d|�S )z�Assume authentication as "user".
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mailbox.
(typ, [data]) = <instance>.proxyauth(user)
r* r� )rT r� r� r= r= r> � proxyauth� s zIMAP4.proxyauthc C s | � d||�S )zkRename old mailbox name to new.
(typ, [data]) = <instance>.rename(oldmailbox, newmailbox)
r+ r� )rT Z
oldmailboxZ
newmailboxr= r= r> �rename� s z IMAP4.renamec G sT d}|r2| j rt�d��| j|d|f|�� \}}n| j|f|�� \}}| �|||�S )z�Search mailbox for matching messages.
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r, z'Non-None charset not valid in UTF8 mode�CHARSET)rY r r? r� r� )rT �charsetZcriteriar� r� r� r= r= r> �search� s
z IMAP4.searchr� Fc C sv i | _ || _|rd}nd}| �||�\}}|dkr@d| _||fS d| _d| j krb|sb| �d| ��|| j �dd g�fS )
at Select a mailbox.
Flush all untagged responses.
(typ, [data]) = <instance>.select(mailbox='INBOX', readonly=False)
'data' is count of messages in mailbox ('EXISTS' response).
Mandated responses are ('FLAGS', 'EXISTS', 'RECENT', 'UIDVALIDITY'), so
other responses should be obtained via <instance>.response('FLAGS') etc.
r r- re r r � READ-ONLYz%s is not writable�EXISTSN)rH rJ r� rE rA �get)rT r� rA r� r� r� r= r= r> �select� s
�z IMAP4.selectc C s | � d|||�S )zZSet a mailbox acl.
(typ, [data]) = <instance>.setacl(mailbox, who, what)
r. r� )rT r� r� Zwhatr= r= r> �setacl� s z IMAP4.setaclc G s | j d|�� \}}| �||d�S )z_(typ, [data]) = <instance>.setannotation(mailbox[, entry, attribute]+)
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r0 r� r� )rT r� Zlimitsr� r� r= r= r> �setquota s zIMAP4.setquotac G sF d}|d |d fdkr d| }| j |||f|�� \}}| �|||�S )z�IMAP4rev1 extension SORT command.
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Nr2 zSSL support missingz TLS session already establishedzTLS not supported by serverre �Zserver_hostnamer Tz Couldn't establish TLS session)�HAVE_SSLr? rL r@ rm �ssl�_create_stdlib_contextr� � wrap_socketr� rU r� r� rk r� )rT � ssl_contextr� r� r� r= r= r> �starttls s&
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r3 r� )rT r� �namesr� r� r� r= r= r> �status7 s z IMAP4.statusc C s> |d |d fdkr d| }| � d|||�\}}| �||d�S )z�Alters flag dispositions for messages in mailbox.
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r r� r� r� r4 r r� )rT r� �commandr� r� r� r= r= r> �storeC s z IMAP4.storec C s | � d|�S )zYSubscribe to new mailbox.
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r5 r� r� r= r= r> � subscribeN s zIMAP4.subscribec G s* d}| j |||f|�� \}}| �|||�S )z�IMAPrev1 extension THREAD command.
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r6 r� )rT Zthreading_algorithmr� r� r� r� r� r= r= r> �threadV s z IMAP4.threadc G s� |� � }|tkr | �d| ��| jt| krL| �d|| jd�t| �f ��d}| j||f|�� \}}|dkrt|}nd}| �|||�S )z�Execute "command arg ..." with messages identified by UID,
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r8 r� r� r= r= r> � unsubscribey s zIMAP4.unsubscribec G s, |� � }|tkr | jft|< | j|f|�� S )a Allow simple extension commands
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keyfile - PEM formatted file that contains your private key (default: None);
certfile - PEM formatted certificate chain file (default: None);
ssl_context - a SSLContext object that contains your certificate chain
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( 5 sunau.cpython-38.opt-1.pyc 0000644 00000041272 15145007335 0011277 0 ustar 00 U
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egZG dd� de�Zdd� Zdd� ZG dd� d�ZG d d � d �Zd"d d �Zd#d d!�ZdS )$a� Stuff to parse Sun and NeXT audio files.
An audio file consists of a header followed by the data. The structure
of the header is as follows.
+---------------+
| magic word |
+---------------+
| header size |
+---------------+
| data size |
+---------------+
| encoding |
+---------------+
| sample rate |
+---------------+
| # of channels |
+---------------+
| info |
| |
+---------------+
The magic word consists of the 4 characters '.snd'. Apart from the
info field, all header fields are 4 bytes in size. They are all
32-bit unsigned integers encoded in big-endian byte order.
The header size really gives the start of the data.
The data size is the physical size of the data. From the other
parameters the number of frames can be calculated.
The encoding gives the way in which audio samples are encoded.
Possible values are listed below.
The info field currently consists of an ASCII string giving a
human-readable description of the audio file. The info field is
padded with NUL bytes to the header size.
Usage.
Reading audio files:
f = sunau.open(file, 'r')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods read(), seek(), and close().
When the setpos() and rewind() methods are not used, the seek()
method is not necessary.
This returns an instance of a class with the following public methods:
getnchannels() -- returns number of audio channels (1 for
mono, 2 for stereo)
getsampwidth() -- returns sample width in bytes
getframerate() -- returns sampling frequency
getnframes() -- returns number of audio frames
getcomptype() -- returns compression type ('NONE' or 'ULAW')
getcompname() -- returns human-readable version of
compression type ('not compressed' matches 'NONE')
getparams() -- returns a namedtuple consisting of all of the
above in the above order
getmarkers() -- returns None (for compatibility with the
aifc module)
getmark(id) -- raises an error since the mark does not
exist (for compatibility with the aifc module)
readframes(n) -- returns at most n frames of audio
rewind() -- rewind to the beginning of the audio stream
setpos(pos) -- seek to the specified position
tell() -- return the current position
close() -- close the instance (make it unusable)
The position returned by tell() and the position given to setpos()
are compatible and have nothing to do with the actual position in the
file.
The close() method is called automatically when the class instance
is destroyed.
Writing audio files:
f = sunau.open(file, 'w')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods write(), tell(), seek(), and
close().
This returns an instance of a class with the following public methods:
setnchannels(n) -- set the number of channels
setsampwidth(n) -- set the sample width
setframerate(n) -- set the frame rate
setnframes(n) -- set the number of frames
setcomptype(type, name)
-- set the compression type and the
human-readable compression type
setparams(tuple)-- set all parameters at once
tell() -- return current position in output file
writeframesraw(data)
-- write audio frames without pathing up the
file header
writeframes(data)
-- write audio frames and patch up the file header
close() -- patch up the file header and close the
output file
You should set the parameters before the first writeframesraw or
writeframes. The total number of frames does not need to be set,
but when it is set to the correct value, the header does not have to
be patched up.
It is best to first set all parameters, perhaps possibly the
compression type, and then write audio frames using writeframesraw.
When all frames have been written, either call writeframes(b'') or
close() to patch up the sizes in the header.
The close() method is called automatically when the class instance
is destroyed.
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optparse.cpython-38.pyc 0000644 00000135673 15145007335 0011053 0 ustar 00 U
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By Greg Ward <gward@python.net>
Originally distributed as Optik.
For support, use the optik-users@lists.sourceforge.net mailing list
(http://lists.sourceforge.net/lists/listinfo/optik-users).
Simple usage example:
from optparse import OptionParser
parser = OptionParser()
parser.add_option("-f", "--file", dest="filename",
help="write report to FILE", metavar="FILE")
parser.add_option("-q", "--quiet",
action="store_false", dest="verbose", default=True,
help="don't print status messages to stdout")
(options, args) = parser.parse_args()
z1.5.3�Option� make_option�
SUPPRESS_HELP�SUPPRESS_USAGE�Values�OptionContainer� OptionGroup� OptionParser�
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OptParseError� OptionError�OptionConflictError�OptionValueError�BadOptionError� check_choicea"
Copyright (c) 2001-2006 Gregory P. Ward. All rights reserved.
Copyright (c) 2002-2006 Python Software Foundation. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
� Nc C s d| j jt| �| f S )Nz<%s at 0x%x: %s>)� __class__�__name__�id��self� r � /usr/lib64/python3.8/optparse.py�_reprO s r )�gettext�ngettextc C s | S �Nr )�messager r r r \ s r c C s |dkr | S |S �N� r )ZsingularZplural�nr r r r _ s r c @ s e Zd Zdd� Zdd� ZdS )r c C s
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Raised if an Option instance is created with invalid or
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Abstract base class for formatting option help. OptionParser
instances should use one of the HelpFormatter subclasses for
formatting help; by default IndentedHelpFormatter is used.
Instance attributes:
parser : OptionParser
the controlling OptionParser instance
indent_increment : int
the number of columns to indent per nesting level
max_help_position : int
the maximum starting column for option help text
help_position : int
the calculated starting column for option help text;
initially the same as the maximum
width : int
total number of columns for output (pass None to constructor for
this value to be taken from the $COLUMNS environment variable)
level : int
current indentation level
current_indent : int
current indentation level (in columns)
help_width : int
number of columns available for option help text (calculated)
default_tag : str
text to replace with each option's default value, "%default"
by default. Set to false value to disable default value expansion.
option_strings : { Option : str }
maps Option instances to the snippet of help text explaining
the syntax of that option, e.g. "-h, --help" or
"-fFILE, --file=FILE"
_short_opt_fmt : str
format string controlling how short options with values are
printed in help text. Must be either "%s%s" ("-fFILE") or
"%s %s" ("-f FILE"), because those are the two syntaxes that
Optik supports.
_long_opt_fmt : str
similar but for long options; must be either "%s %s" ("--file FILE")
or "%s=%s" ("--file=FILE").
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action : string
type : string
dest : string
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callback : function
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Abstract base class.
Class attributes:
standard_option_list : [Option]
list of standard options that will be accepted by all instances
of this parser class (intended to be overridden by subclasses).
Instance attributes:
option_list : [Option]
the list of Option objects contained by this OptionContainer
_short_opt : { string : Option }
dictionary mapping short option strings, eg. "-f" or "-X",
to the Option instances that implement them. If an Option
has multiple short option strings, it will appear in this
dictionary multiple times. [1]
_long_opt : { string : Option }
dictionary mapping long option strings, eg. "--file" or
"--exclude", to the Option instances that implement them.
Again, a given Option can occur multiple times in this
dictionary. [1]
defaults : { string : any }
dictionary mapping option destination names to default
values for each destination [1]
[1] These mappings are common to (shared by) all components of the
controlling OptionParser, where they are initially created.
c C s& | � � || _| �|� | �|� d S r )�_create_option_list� option_class�set_conflict_handler�set_description)r r �conflict_handlerrj r r r r% � s
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_short_opt� _long_optro r r r r �_create_option_mappings� s z'OptionContainer._create_option_mappingsc C s |j | _ |j| _|j| _d S r r rN r r r �_share_option_mappings� s z&OptionContainer._share_option_mappingsc C s |dkrt d| ��|| _d S )N)�error�resolvez$invalid conflict_resolution value %r)r? r )r �handlerr r r r � s z$OptionContainer.set_conflict_handlerc C s
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Class attributes:
standard_option_list : [Option]
list of standard options that will be accepted by all instances
of this parser class (intended to be overridden by subclasses).
Instance attributes:
usage : string
a usage string for your program. Before it is displayed
to the user, "%prog" will be expanded to the name of
your program (self.prog or os.path.basename(sys.argv[0])).
prog : string
the name of the current program (to override
os.path.basename(sys.argv[0])).
description : string
A paragraph of text giving a brief overview of your program.
optparse reformats this paragraph to fit the current terminal
width and prints it when the user requests help (after usage,
but before the list of options).
epilog : string
paragraph of help text to print after option help
option_groups : [OptionGroup]
list of option groups in this parser (option groups are
irrelevant for parsing the command-line, but very useful
for generating help)
allow_interspersed_args : bool = true
if true, positional arguments may be interspersed with options.
Assuming -a and -b each take a single argument, the command-line
-ablah foo bar -bboo baz
will be interpreted the same as
-ablah -bboo -- foo bar baz
If this flag were false, that command line would be interpreted as
-ablah -- foo bar -bboo baz
-- ie. we stop processing options as soon as we see the first
non-option argument. (This is the tradition followed by
Python's getopt module, Perl's Getopt::Std, and other argument-
parsing libraries, but it is generally annoying to users.)
process_default_values : bool = true
if true, option default values are processed similarly to option
values from the command line: that is, they are passed to the
type-checking function for the option's type (as long as the
default value is a string). (This really only matters if you
have defined custom types; see SF bug #955889.) Set it to false
to restore the behaviour of Optik 1.4.1 and earlier.
rargs : [string]
the argument list currently being parsed. Only set when
parse_args() is active, and continually trimmed down as
we consume arguments. Mainly there for the benefit of
callback options.
largs : [string]
the list of leftover arguments that we have skipped while
parsing options. If allow_interspersed_args is false, this
list is always empty.
values : Values
the set of option values currently being accumulated. Only
set when parse_args() is active. Also mainly for callbacks.
Because of the 'rargs', 'largs', and 'values' attributes,
OptionParser is not thread-safe. If, for some perverse reason, you
need to parse command-line arguments simultaneously in different
threads, use different OptionParser instances.
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it) can be garbage-collected promptly. After calling destroy(), the
OptionParser is unusable.
N)r r r� r� r )r r� r r r r � s
zOptionParser.destroyc C s g | _ g | _| �� d S r )r� r� r r r r r r � s z OptionParser._create_option_listc C s | j dddtd�d� d S )Nz-hz--helprn z show this help message and exit�r� rn �r r1 r r r r �_add_help_option� s �z OptionParser._add_help_optionc C s | j ddtd�d� d S )Nz --versionr� z&show program's version number and exitr, r- r r r r �_add_version_option� s �z OptionParser._add_version_optionc C s> | j r| �| j � |r | �|� | jr.| �� |r:| �� d S r )�standard_option_listr r� r/ r. )r r� r% r r r r* � s
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d| _ dS )a Set parsing to not stop on the first non-option, allowing
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allow_interspersed_args.TN�r( r r r r �enable_interspersed_args� s z%OptionParser.enable_interspersed_argsc C s
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don't get confused.
FNr4 r r r r �disable_interspersed_args s z&OptionParser.disable_interspersed_argsc C s
|| _ d S r )r) )r r� r r r �set_process_default_values s z'OptionParser.set_process_default_valuesc C s || j |< d S r )ro )r rq r� r r r � set_default s zOptionParser.set_defaultc K s | j �|� d S r )ro r� )r r� r r r � set_defaults s zOptionParser.set_defaultsc C s* | j d d � }| jD ]}|�|j � q|S r )r� r� r} )r Zoptionsr� r r r �_get_all_options s
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||�||j< q"t|�S r ) r) r ro �copyr: rp rq r� r) r� r� )r ro r+ r� r/ r r r �get_default_values s
z OptionParser.get_default_valuesc O sz t |d t�r t| f|�|�}nJt|�dkrb|sb|d }t |t�sNtd| ��|j| k rjtd��ntd��| j�|� |S )Nr r z not an OptionGroup instance: %rz"invalid OptionGroup (wrong parser)r ) r� r) r r{ r� r9 r? r� r| )r r� r� r� r r r �add_option_group+ s
z OptionParser.add_option_groupc C s0 | j �|�p| j�|�}|r,|j| k r,|jS d S r )r rp r r )r r/ r+ r r r �get_option_group; s
�z OptionParser.get_option_groupc C s& |d krt jdd � S |d d � S d S r )r� �argv)r r� r r r � _get_argsE s zOptionParser._get_argsc
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parse_args(args : [string] = sys.argv[1:],
values : Values = None)
-> (values : Values, args : [string])
Parse the command-line options found in 'args' (default:
sys.argv[1:]). Any errors result in a call to 'error()', which
by default prints the usage message to stderr and calls
sys.exit() with an error message. On success returns a pair
(values, args) where 'values' is a Values instance (with all
your option values) and 'args' is the list of arguments left
over after parsing options.
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Check that the supplied option values and leftover arguments are
valid. Returns the option values and leftover arguments
(possibly adjusted, possibly completely new -- whatever you
like). Default implementation just returns the passed-in
values; subclasses may override as desired.
r )r r� r� r r r rB r s zOptionParser.check_valuesc C s� |r�|d }|dkr |d= dS |dd� dkr<| � ||� q |dd� dkrft|�dkrf| �||� q | jr~|�|� |d= q dS q dS )a� _process_args(largs : [string],
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values : Values)
Process command-line arguments and populate 'values', consuming
options and arguments from 'rargs'. If 'allow_interspersed_args' is
false, stop at the first non-option argument. If true, accumulate any
interspersed non-option arguments in 'largs'.
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zOptionParser._process_argsc C s t || j�S )a _match_long_opt(opt : string) -> string
Determine which long option string 'opt' matches, ie. which one
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Print the usage message for the current program (self.usage) to
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Print the version message for this program (self.version) to
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) poplib.cpython-38.opt-1.pyc 0000644 00000032225 15145007335 0011427 0 ustar 00 U
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Based on the J. Myers POP3 draft, Jan. 96
� NTF�POP3� error_protoc @ s e Zd ZdS )r N)�__name__�
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dd� Zdd� Zdd� Zdd� Zdd� Zdd� Zdd � Zd d � Zd=d d!�Zd"d#� Zd$d%� Zd&d'� Zd(d)� Zd*d+� Zd,d-� Z d.d/� Z e � d0�Z d1d2� Z!d3d4� Z"d>d5d6�Z#d7d8� Z$d9d:� Z%d?d;d<�Z&d S )@r aP This class supports both the minimal and optional command sets.
Arguments can be strings or integers (where appropriate)
(e.g.: retr(1) and retr('1') both work equally well.
Minimal Command Set:
USER name user(name)
PASS string pass_(string)
STAT stat()
LIST [msg] list(msg = None)
RETR msg retr(msg)
DELE msg dele(msg)
NOOP noop()
RSET rset()
QUIT quit()
Optional Commands (some servers support these):
RPOP name rpop(name)
APOP name digest apop(name, digest)
TOP msg n top(msg, n)
UIDL [msg] uidl(msg = None)
CAPA capa()
STLS stls()
UTF8 utf8()
Raises one exception: 'error_proto'.
Instantiate with:
POP3(hostname, port=110)
NB: the POP protocol locks the mailbox from user
authorization until QUIT, so be sure to get in, suck
the messages, and quit, each time you access the
mailbox.
POP is a line-based protocol, which means large mail
messages consume lots of python cycles reading them
line-by-line.
If it's available on your mail server, use IMAP4
instead, it doesn't suffer from the two problems
above.
zUTF-8c C sP || _ || _d| _t�d| ||� | �|�| _| j�d�| _d| _ | �
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r )r r r r r r m s zPOP3._create_socketc C s: | j dkrtdt|�� t�d| |� | j�|t � d S )N� z*put*zpoplib.putline)r �print�reprr r r Zsendall�CRLF�r �liner r r �_putlinep s
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line too longz*get*z-ERR EOF������)
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startswithr )r �resp�or r r r � s
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POP3._getrespc C sl | � � }g }d}| �� \}}|dkrb|�d�rB|d }|dd � }|| }|�|� | �� \}}q |||fS )Nr � .s ..r )r r/ r1 �append)r r2 �listr. r# r3 r r r � _getlongresp� s
zPOP3._getlongrespc C s | � |� | �� S r )r' r r" r r r � _shortcmd� s
zPOP3._shortcmdc C s | � |� | �� S r )r' r7 r" r r r �_longcmd� s
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POP3._longcmdc C s | j S r )r �r r r r �
getwelcome� s zPOP3.getwelcomec C s
|| _ d S r )r )r �levelr r r �set_debuglevel� s zPOP3.set_debuglevelc C s | � d| �S )zVSend user name, return response
(should indicate password required).
zUSER %s�r8 �r �userr r r r@ � s z POP3.userc C s | � d| �S )z�Send password, return response
(response includes message count, mailbox size).
NB: mailbox is locked by server from here to 'quit()'
zPASS %sr> )r Zpswdr r r �pass_� s z
POP3.pass_c C sF | � d�}|�� }| jr&tdt|�� t|d �}t|d �}||fS )z]Get mailbox status.
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ZSTATz*stat*r � )r8 �splitr r r �int)r ZretvalZretsZ numMessagesZ sizeMessagesr r r �stat� s
z POP3.statNc C s |dk r| � d| �S | �d�S )a Request listing, return result.
Result without a message number argument is in form
['response', ['mesg_num octets', ...], octets].
Result when a message number argument is given is a
single response: the "scan listing" for that message.
NzLIST %sZLIST�r8 r9 �r �whichr r r r6 � s z POP3.listc C s | � d| �S )zoRetrieve whole message number 'which'.
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zRETR %s�r9 rG r r r �retr� s z POP3.retrc C s | � d| �S )zFDelete message number 'which'.
Result is 'response'.
zDELE %sr> rG r r r �dele� s z POP3.delec C s
| � d�S )zXDoes nothing.
One supposes the response indicates the server is alive.
ZNOOPr> r: r r r �noop s z POP3.noopc C s
| � d�S )z(Unmark all messages marked for deletion.ZRSETr> r: r r r �rset s z POP3.rsetc C s | � d�}| �� |S )zDSignoff: commit changes on server, unlock mailbox, close connection.ZQUIT)r8 �close)r r2 r r r �quit s
z POP3.quitc C s� z | j }d| _ |dk r |�� W 5 | j }d| _ |dk r�zVz|�tj� W n@ tk
r� } z"|jtjkrxt|dd�dkrx� W 5 d}~X Y nX W 5 |�� X X dS )z8Close the connection without assuming anything about it.NZwinerrorr i&' )
r rN Zshutdownr Z SHUT_RDWR�OSError�errnoZENOTCONN�getattrr )r r �excr r r r rN s �z
POP3.closec C s | � d| �S )zNot sure what this does.zRPOP %sr> r? r r r �rpop5 s z POP3.rpops \+OK.[^<]*(<.*>)c C s\ t || j�}| j�| j�}|s&td��ddl}|�d�| }|�|�� � }| �
d||f �S )a Authorisation
- only possible if server has supplied a timestamp in initial greeting.
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password - mailbox password.
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z!-ERR APOP not supported by serverr Nr z
APOP %s %s) r% r& � timestamp�matchr r �hashlib�groupZmd5Z hexdigestr8 )r r@ ZpasswordZsecret�mrW Zdigestr r r �apop< s z POP3.apopc C s | � d||f �S )z�Retrieve message header of message number 'which'
and first 'howmuch' lines of message body.
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z TOP %s %srI )r rH Zhowmuchr r r �topQ s zPOP3.topc C s |dk r| � d| �S | �d�S )z�Return message digest (unique id) list.
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in the form 'response mesgnum uid', otherwise result is
the list ['response', ['mesgnum uid', ...], octets]
NzUIDL %sZUIDLrF rG r r r �uidlZ s z POP3.uidlc C s
| � d�S )zITry to enter UTF-8 mode (see RFC 6856). Returns server response.
ZUTF8r> r: r r r �utf8f s z POP3.utf8c
C sp dd� }i }z4| � d�}|d }|D ]}||�\}}|||< q$W n* tk
rj } z td��W 5 d}~X Y nX |S )a Return server capabilities (RFC 2449) as a dictionary
>>> c=poplib.POP3('localhost')
>>> c.capa()
{'IMPLEMENTATION': ['Cyrus', 'POP3', 'server', 'v2.2.12'],
'TOP': [], 'LOGIN-DELAY': ['0'], 'AUTH-RESP-CODE': [],
'EXPIRE': ['NEVER'], 'USER': [], 'STLS': [], 'PIPELINING': [],
'UIDL': [], 'RESP-CODES': []}
>>>
Really, according to RFC 2449, the cyrus folks should avoid
having the implementation split into multiple arguments...
c S s" | � d��� }|d |dd � fS )N�asciir r )�decoderC )r# Zlstr r r � _parsecapy s z POP3.capa.<locals>._parsecapZCAPAr z!-ERR CAPA not supported by serverN)r9 r ) r r` �capsr2 ZrawcapsZcaplineZcapnmZcapargsZ_errr r r �capal s
z POP3.capac C sx t s td��| jrtd��| �� }d|kr2td��|dkrBt�� }| �d�}|j| j| j d�| _| j�
d�| _ d| _|S ) z{Start a TLS session on the active connection as specified in RFC 2595.
context - a ssl.SSLContext
z-ERR TLS support missing�$-ERR TLS session already establishedZSTLSz!-ERR STLS not supported by serverN�Zserver_hostnamer T) �HAVE_SSLr r rb �ssl�_create_stdlib_contextr8 � wrap_socketr r
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�z POP3.stls)N)N)N)'r r r �__doc__r& � POP3_PORTr �_GLOBAL_DEFAULT_TIMEOUTr r r$ r' r/ r r7 r8 r9 r; r= r@ rA rE r6 rJ rK rL rM rO rN rT �re�compilerU rZ r[ r\ r] rb rj r r r r r 3 sB +�
c @ s8 e Zd ZdZeddejdfdd�Zdd� Zd dd�Z dS )
�POP3_SSLa POP3 client class over SSL connection
Instantiate with: POP3_SSL(hostname, port=995, keyfile=None, certfile=None,
context=None)
hostname - the hostname of the pop3 over ssl server
port - port number
keyfile - PEM formatted file that contains your private key
certfile - PEM formatted certificate chain file
context - a ssl.SSLContext
See the methods of the parent class POP3 for more documentation.
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codeop.cpython-38.opt-2.pyc 0000644 00000004467 15145007335 0011423 0 ustar 00 U
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When the setpos() and rewind() methods are not used, the seek()
method is not necessary.
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getnchannels() -- returns number of audio channels (1 for
mono, 2 for stereo)
getsampwidth() -- returns sample width in bytes
getframerate() -- returns sampling frequency
getnframes() -- returns number of audio frames
getcomptype() -- returns compression type ('NONE' for linear samples)
getcompname() -- returns human-readable version of
compression type ('not compressed' linear samples)
getparams() -- returns a namedtuple consisting of all of the
above in the above order
getmarkers() -- returns None (for compatibility with the
aifc module)
getmark(id) -- raises an error since the mark does not
exist (for compatibility with the aifc module)
readframes(n) -- returns at most n frames of audio
rewind() -- rewind to the beginning of the audio stream
setpos(pos) -- seek to the specified position
tell() -- return the current position
close() -- close the instance (make it unusable)
The position returned by tell() and the position given to setpos()
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file.
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f = wave.open(file, 'w')
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close().
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setnchannels(n) -- set the number of channels
setsampwidth(n) -- set the sample width
setframerate(n) -- set the frame rate
setnframes(n) -- set the number of frames
setcomptype(type, name)
-- set the compression type and the
human-readable compression type
setparams(tuple)
-- set all parameters at once
tell() -- return current position in output file
writeframesraw(data)
-- write audio frames without patching up the
file header
writeframes(data)
-- write audio frames and patch up the file header
close() -- patch up the file header and close the
output file
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_nframes -- the number of audio frames
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_sampwidth -- the number of bytes per audio sample
available through the getsampwidth() method
_framerate -- the sampling frequency
available through the getframerate() method
_comptype -- the AIFF-C compression type ('NONE' if AIFF)
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_compname -- the human-readable AIFF-C compression type
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_soundpos -- the position in the audio stream
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_fmt_chunk_read -- 1 iff the FMT chunk has been read
_data_seek_needed -- 1 iff positioned correctly in audio
file for readframes()
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_framesize -- size of one frame in the file
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set through the setcomptype() or setparams() method
_compname -- the human-readable AIFF-C compression type
set through the setcomptype() or setparams() method
_nchannels -- the number of audio channels
set through the setnchannels() or setparams() method
_sampwidth -- the number of bytes per audio sample
set through the setsampwidth() or setparams() method
_framerate -- the sampling frequency
set through the setframerate() or setparams() method
_nframes -- the number of audio frames written to the header
set through the setnframes() or setparams() method
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_datalength -- the size of the audio samples written to the header
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�r ddGlVmUZU Y nX dHdI� ZWeXedJ��r.ejYeWdK� dS )Mz;Thread module emulating a subset of Java's threading model.� N)� monotonic)�WeakSet)�islice�count)�deque� get_ident� active_count� Condition�current_thread� enumerate� main_thread� TIMEOUT_MAX�Event�Lock�RLock� Semaphore�BoundedSemaphore�Thread�Barrier�BrokenBarrierError�Timer� ThreadError�
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N)� _trace_hookr r" r" r# r C s c O s t dkrt| |�S t | |�S )a2 Factory function that returns a new reentrant lock.
A reentrant lock must be released by the thread that acquired it. Once a
thread has acquired a reentrant lock, the same thread may acquire it again
without blocking; the thread must release it once for each time it has
acquired it.
N)�_CRLock�_PyRLock)�args�kwargsr" r" r# r Q s
c @ sV e Zd ZdZdd� Zdd� Zddd �ZeZd
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dd� Z dd� Z dS )�_RLocka, This class implements reentrant lock objects.
A reentrant lock must be released by the thread that acquired it. Once a
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again without blocking; the thread must release it once for each time it
has acquired it.
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�z_RLock.__repr__T���c C sD t � }| j|kr"| jd7 _dS | j�||�}|r@|| _d| _|S )a Acquire a lock, blocking or non-blocking.
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if another thread owns the lock, block until the lock is unlocked. Once
the lock is unlocked (not owned by any thread), then grab ownership, set
the recursion level to one, and return. If more than one thread is
blocked waiting until the lock is unlocked, only one at a time will be
able to grab ownership of the lock. There is no return value in this
case.
When invoked with the blocking argument set to true, do the same thing
as when called without arguments, and return true.
When invoked with the blocking argument set to false, do not block. If a
call without an argument would block, return false immediately;
otherwise, do the same thing as when called without arguments, and
return true.
When invoked with the floating-point timeout argument set to a positive
value, block for at most the number of seconds specified by timeout
and as long as the lock cannot be acquired. Return true if the lock has
been acquired, false if the timeout has elapsed.
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z_RLock.acquirec C s< | j t� krtd��| jd | _}|s8d| _ | j�� dS )am Release a lock, decrementing the recursion level.
If after the decrement it is zero, reset the lock to unlocked (not owned
by any thread), and if any other threads are blocked waiting for the
lock to become unlocked, allow exactly one of them to proceed. If after
the decrement the recursion level is still nonzero, the lock remains
locked and owned by the calling thread.
Only call this method when the calling thread owns the lock. A
RuntimeError is raised if this method is called when the lock is
unlocked.
There is no return value.
� cannot release un-acquired lockr> N)r- r � RuntimeErrorr. r, �release)r0 r r" r" r# rF � s z_RLock.releasec C s | � � d S �N�rF �r0 �t�v�tbr" r" r# �__exit__� s z_RLock.__exit__c C s | j �� |\| _| _d S rG )r, r? r. r- )r0 �stater" r" r# �_acquire_restore� s
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r) c @ st e Zd ZdZddd�Zdd� Zdd� Zd d
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If the lock argument is given and not None, it must be a Lock or RLock
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is created and used as the underlying lock.
Nc C s� |d krt � }|| _|j| _|j| _z |j| _W n tk
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zCondition._is_ownedc C s� | � � std��t� }|�� | j�|� | �� }d}z>|dkrN|�� d}n |dkrd|�d|�}n
|�d�}|W �S | �|� |s�z| j�|� W n t k
r� Y nX X dS )ak Wait until notified or until a timeout occurs.
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called, a RuntimeError is raised.
This method releases the underlying lock, and then blocks until it is
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variable in another thread, or until the optional timeout occurs. Once
awakened or timed out, it re-acquires the lock and returns.
When the timeout argument is present and not None, it should be a
floating point number specifying a timeout for the operation in seconds
(or fractions thereof).
When the underlying lock is an RLock, it is not released using its
release() method, since this may not actually unlock the lock when it
was acquired multiple times recursively. Instead, an internal interface
of the RLock class is used, which really unlocks it even when it has
been recursively acquired several times. Another internal interface is
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Semaphores manage a counter representing the number of release() calls minus
the number of acquire() calls, plus an initial value. The acquire() method
blocks if necessary until it can return without making the counter
negative. If not given, value defaults to 1.
r> c C s& |dk rt d��tt� �| _|| _d S )Nr z$semaphore initial value must be >= 0)r_ r r �_cond�_value�r0 �valuer" r" r# r1 � s zSemaphore.__init__TNc C s� |s|dk rt d��d}d}| j�f | jdkrr|s4q�|dk rd|dkrPt� | }n|t� }|dkrdq�| j�|� q$| jd8 _d}W 5 Q R X |S )a� Acquire a semaphore, decrementing the internal counter by one.
When invoked without arguments: if the internal counter is larger than
zero on entry, decrement it by one and return immediately. If it is zero
on entry, block, waiting until some other thread has called release() to
make it larger than zero. This is done with proper interlocking so that
if multiple acquire() calls are blocked, release() will wake exactly one
of them up. The implementation may pick one at random, so the order in
which blocked threads are awakened should not be relied on. There is no
return value in this case.
When invoked with blocking set to true, do the same thing as when called
without arguments, and return true.
When invoked with blocking set to false, do not block. If a call without
an argument would block, return false immediately; otherwise, do the
same thing as when called without arguments, and return true.
When invoked with a timeout other than None, it will block for at
most timeout seconds. If acquire does not complete successfully in
that interval, return false. Return true otherwise.
Nz.can't specify timeout for non-blocking acquireFr r> T)r_ rj rk rb ra )r0 r@ rA rC rc r" r" r# r? � s$
zSemaphore.acquirec C s. | j � | jd7 _| j �� W 5 Q R X dS )z�Release a semaphore, incrementing the internal counter by one.
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r> N)rj rk rh r/ r" r" r# rF � s zSemaphore.releasec C s | � � d S rG rH rI r" r" r# rM � s zSemaphore.__exit__)r> )TN) rR r7 r8 rS r1 r? rT rF rM r" r" r" r# r x s
- c @ s" e Zd ZdZddd�Zdd� ZdS ) r a� Implements a bounded semaphore.
A bounded semaphore checks to make sure its current value doesn't exceed its
initial value. If it does, ValueError is raised. In most situations
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If the semaphore is released too many times it's a sign of a bug. If not
given, value defaults to 1.
Like regular semaphores, bounded semaphores manage a counter representing
the number of release() calls minus the number of acquire() calls, plus an
initial value. The acquire() method blocks if necessary until it can return
without making the counter negative. If not given, value defaults to 1.
r> c C s t �| |� || _d S rG )r r1 �_initial_valuerl r" r" r# r1 � s zBoundedSemaphore.__init__c C sB | j �2 | j| jkr td��| jd7 _| j �� W 5 Q R X dS )a6 Release a semaphore, incrementing the internal counter by one.
When the counter is zero on entry and another thread is waiting for it
to become larger than zero again, wake up that thread.
If the number of releases exceeds the number of acquires,
raise a ValueError.
z!Semaphore released too many timesr> N)rj rk rn r_ rh r/ r" r" r# rF � s
zBoundedSemaphore.releaseN)r> )rR r7 r8 rS r1 rF r" r" r" r# r � s
c @ sF e Zd ZdZdd� Zdd� Zdd� ZeZdd � Zd
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to false with the clear() method. The wait() method blocks until the flag is
true. The flag is initially false.
c C s t t� �| _d| _d S )NF)r r rj �_flagr/ r" r" r# r1 � s zEvent.__init__c C s | j �t� � d S rG )rj r1 r r/ r" r" r# �_reset_internal_locks� s zEvent._reset_internal_locksc C s | j S )z5Return true if and only if the internal flag is true.)ro r/ r" r" r# �is_set s z Event.is_setc C s& | j � d| _| j �� W 5 Q R X dS )z�Set the internal flag to true.
All threads waiting for it to become true are awakened. Threads
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TN)rj ro ri r/ r" r" r# �set s z Event.setc C s | j � d| _W 5 Q R X dS )z�Reset the internal flag to false.
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FN)rj ro r/ r" r" r# �clear s z Event.clearNc
C s8 | j �( | j}|s | j �|�}|W 5 Q R � S Q R X dS )aH Block until the internal flag is true.
If the internal flag is true on entry, return immediately. Otherwise,
block until another thread calls set() to set the flag to true, or until
the optional timeout occurs.
When the timeout argument is present and not None, it should be a
floating point number specifying a timeout for the operation in seconds
(or fractions thereof).
This method returns the internal flag on exit, so it will always return
True except if a timeout is given and the operation times out.
N)rj ro ra )r0 rA Zsignaledr" r" r# ra s
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Event.wait)N) rR r7 r8 rS r1 rp rq ZisSetrr rs ra r" r" r" r# r � s
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dd� Z dd� Z e
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dd� �Ze
dd� �ZdS ) r z�Implements a Barrier.
Useful for synchronizing a fixed number of threads at known synchronization
points. Threads block on 'wait()' and are simultaneously awoken once they
have all made that call.
Nc C s. t t� �| _|| _|| _|| _d| _d| _dS )aW Create a barrier, initialised to 'parties' threads.
'action' is a callable which, when supplied, will be called by one of
the threads after they have all entered the barrier and just prior to
releasing them all. If a 'timeout' is provided, it is used as the
default for all subsequent 'wait()' calls.
r N)r r rj �_action�_timeout�_parties�_stater. )r0 �parties�actionrA r" r" r# r1 F s zBarrier.__init__c
C s� |dkr| j }| j�r | �� | j}| jd7 _z6|d | jkrL| �� n
| �|� |W �W 5 Q R � S | jd8 _| �� X W 5 Q R X dS )aN Wait for the barrier.
When the specified number of threads have started waiting, they are all
simultaneously awoken. If an 'action' was provided for the barrier, one
of the threads will have executed that callback prior to returning.
Returns an individual index number from 0 to 'parties-1'.
Nr> )ru rj �_enterr. �_exitrv �_release�_wait)r0 rA �indexr" r" r# ra V s
z Barrier.waitc C s( | j dkr| j�� q | j dk r$t�d S )N�r= r> r )rw rj ra r r/ r" r" r# rz t s
zBarrier._enterc C s> z"| j r| � � d| _| j�� W n | �� � Y nX d S )Nr> )rt rw rj ri �_breakr/ r" r" r# r| s zBarrier._releasec s4 � j �� fdd�|�s"� �� t�� jdk r0t�d S )Nc s
� j dkS r* �rw r" r/ r" r# �<lambda>� � z Barrier._wait.<locals>.<lambda>r )rj re r� r rw �r0 rA r" r/ r# r} � s
z
Barrier._waitc C s( | j dkr$| jdkr$d| _| j�� d S )Nr r )r. rw rj ri r/ r" r" r# r{ � s
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Barrier._exitc C sT | j �D | jdkr6| jdkr$d| _q<| jdkr<d| _nd| _| j �� W 5 Q R X dS )z�Reset the barrier to the initial state.
Any threads currently waiting will get the BrokenBarrier exception
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Barrier.resetc C s | j � | �� W 5 Q R X dS )z�Place the barrier into a 'broken' state.
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N)rj r� r/ r" r" r# �abort� s z
Barrier.abortc C s d| _ | j�� d S )Nr� )rw rj ri r/ r" r" r# r� � s zBarrier._breakc C s | j S )z:Return the number of threads required to trip the barrier.)rv r/ r" r" r# rx � s zBarrier.partiesc C s | j dkr| jS dS )z>Return the number of threads currently waiting at the barrier.r )rw r. r/ r" r" r# � n_waiting� s
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| j dkS )z0Return True if the barrier is in a broken state.r� r� r/ r" r" r# �broken� s zBarrier.broken)NN)N)rR r7 r8 rS r1 ra rz r| r} r{ r� r� r� �propertyrx r� r� r" r" r" r# r = s
c @ s e Zd ZdS )r N)rR r7 r8 r" r" r" r# r � s � Thread-%dc C s
| t � S rG )�_counter)�templater" r" r# �_newname� s r� c @ s e Zd ZdZdZd:dd�dd�Zdd � Zd
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dd� Zdd� Zdd� Zd d � Zd;d d �Zd<d"d#�Zed$d%� �Zejd&d%� �Zed'd(� �Ze r�ed)d*� �Zd+d,� Zd-d.� Zed/d0� �Zejd1d0� �Zd2d3� Z d4d5� Z d6d7� Z d8d9� Z dS )=r a A class that represents a thread of control.
This class can be safely subclassed in a limited fashion. There are two ways
to specify the activity: by passing a callable object to the constructor, or
by overriding the run() method in a subclass.
FNr" ��daemonc C s� |dkr i }|| _ t|p t� �| _|| _|| _|dk r>|| _n
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� | _d| _d| _tj| _t� | _t�| � dS )aK This constructor should always be called with keyword arguments. Arguments are:
*group* should be None; reserved for future extension when a ThreadGroup
class is implemented.
*target* is the callable object to be invoked by the run()
method. Defaults to None, meaning nothing is called.
*name* is the thread name. By default, a unique name is constructed of
the form "Thread-N" where N is a small decimal number.
*args* is the argument tuple for the target invocation. Defaults to ().
*kwargs* is a dictionary of keyword arguments for the target
invocation. Defaults to {}.
If a subclass overrides the constructor, it must make sure to invoke
the base class constructor (Thread.__init__()) before doing anything
else to the thread.
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| size (4 bytes) |
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The ID is a 4-byte string which identifies the type of chunk.
The size field (a 32-bit value, encoded using big-endian byte order)
gives the size of the whole chunk, including the 8-byte header.
Usually an IFF-type file consists of one or more chunks. The proposed
usage of the Chunk class defined here is to instantiate an instance at
the start of each chunk and read from the instance until it reaches
the end, after which a new instance can be instantiated. At the end
of the file, creating a new instance will fail with an EOFError
exception.
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while True:
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except EOFError:
break
chunktype = chunk.getname()
while True:
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# do something with data
The interface is file-like. The implemented methods are:
read, close, seek, tell, isatty.
Extra methods are: skip() (called by close, skips to the end of the chunk),
getname() (returns the name (ID) of the chunk)
The __init__ method has one required argument, a file-like object
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specifies whether or not chunks are aligned on 2-byte boundaries. The
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socket are available as methods of the socket object.
Functions:
socket() -- create a new socket object
socketpair() -- create a pair of new socket objects [*]
fromfd() -- create a socket object from an open file descriptor [*]
fromshare() -- create a socket object from data received from socket.share() [*]
gethostname() -- return the current hostname
gethostbyname() -- map a hostname to its IP number
gethostbyaddr() -- map an IP number or hostname to DNS info
getservbyname() -- map a service name and a protocol name to a port number
getprotobyname() -- map a protocol name (e.g. 'tcp') to a number
ntohs(), ntohl() -- convert 16, 32 bit int from network to host byte order
htons(), htonl() -- convert 16, 32 bit int from host to network byte order
inet_aton() -- convert IP addr string (123.45.67.89) to 32-bit packed format
inet_ntoa() -- convert 32-bit packed format IP to string (123.45.67.89)
socket.getdefaulttimeout() -- get the default timeout value
socket.setdefaulttimeout() -- set the default timeout value
create_connection() -- connects to an address, with an optional timeout and
optional source address.
[*] not available on all platforms!
Special objects:
SocketType -- type object for socket objects
error -- exception raised for I/O errors
has_ipv6 -- boolean value indicating if IPv6 is supported
IntEnum constants:
AF_INET, AF_UNIX -- socket domains (first argument to socket() call)
SOCK_STREAM, SOCK_DGRAM, SOCK_RAW -- socket types (second argument)
Integer constants:
Many other constants may be defined; these may be used in calls to
the setsockopt() and getsockopt() methods.
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+ zInvalid QoS filter style.i + i + zIncorrect QoS filter count.i
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Copyright (c) 2001-2006 Gregory P. Ward. All rights reserved.
Copyright (c) 2002-2006 Python Software Foundation. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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-Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fno-semantic-interposition -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fno-semantic-interposition -fprofile-use -fprofile-correction -I/builddir/build/BUILD/Python-3.8.17/Include/internal -IObjects -IInclude -IPython -I. -I/builddir/build/BUILD/Python-3.8.17/Include -fPIC -DPy_BUILD_CORE_BUILTINa. -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fno-semantic-interposition -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fno-semantic-interposition -fprofile-use -fprofile-correction -I/builddir/build/BUILD/Python-3.8.17/Include/internala -Wno-unused-result -Wsign-compare -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DNDEBUG -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fno-semantic-interposition -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fno-semantic-interposition -fprofile-use -fprofile-correction -I/builddir/build/BUILD/Python-3.8.17/Include/internal -IObjects -IInclude -IPython -I. -I/builddir/build/BUILD/Python-3.8.17/Include -fPIC -DPy_BUILD_COREaT -Wl,-z,relro -Wl,-z,now -g -Wl,-z,relro -Wl,-z,now -g -Wl,-z,relro -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -fno-semantic-interposition -g -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -Wl,-z,relro -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -fno-semantic-interposition -g -lcryptoz"z"a -Wl,-z,relro -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -fno-semantic-interposition -g -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -Wl,-z,relro -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -fno-semantic-interposition -g� a -Wno-unused-result -Wsign-compare -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DNDEBUG -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fno-semantic-interposition -flto -fuse-linker-plugin -ffat-lto-objects -flto-partition=none -g -std=c99 -Wextra -Wno-unused-result -Wno-unused-parameter -Wno-missing-field-initializers -Werror=implicit-function-declaration -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fno-semantic-interposition -fprofile-use -fprofile-correction -I/builddir/build/BUILD/Python-3.8.17/Include/internal -IObjects -IInclude -IPython -I. -I/builddir/build/BUILD/Python-3.8.17/Include 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�� fileinput.cpython-38.opt-1.pyc 0000644 00000032077 15145007335 0012146 0 ustar 00 U
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import fileinput
for line in fileinput.input():
process(line)
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defaulting to sys.stdin if the list is empty. If a filename is '-' it
is also replaced by sys.stdin and the optional arguments mode and
openhook are ignored. To specify an alternative list of filenames,
pass it as the argument to input(). A single file name is also allowed.
Functions filename(), lineno() return the filename and cumulative line
number of the line that has just been read; filelineno() returns its
line number in the current file; isfirstline() returns true iff the
line just read is the first line of its file; isstdin() returns true
iff the line was read from sys.stdin. Function nextfile() closes the
current file so that the next iteration will read the first line from
the next file (if any); lines not read from the file will not count
towards the cumulative line count; the filename is not changed until
after the first line of the next file has been read. Function close()
closes the sequence.
Before any lines have been read, filename() returns None and both line
numbers are zero; nextfile() has no effect. After all lines have been
read, filename() and the line number functions return the values
pertaining to the last line read; nextfile() has no effect.
All files are opened in text mode by default, you can override this by
setting the mode parameter to input() or FileInput.__init__().
If an I/O error occurs during opening or reading a file, the OSError
exception is raised.
If sys.stdin is used more than once, the second and further use will
return no lines, except perhaps for interactive use, or if it has been
explicitly reset (e.g. using sys.stdin.seek(0)).
Empty files are opened and immediately closed; the only time their
presence in the list of filenames is noticeable at all is when the
last file opened is empty.
It is possible that the last line of a file doesn't end in a newline
character; otherwise lines are returned including the trailing
newline.
Class FileInput is the implementation; its methods filename(),
lineno(), fileline(), isfirstline(), isstdin(), nextfile() and close()
correspond to the functions in the module. In addition it has a
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__getitem__() method which implements the sequence behavior. The
sequence must be accessed in strictly sequential order; sequence
access and readline() cannot be mixed.
Optional in-place filtering: if the keyword argument inplace=1 is
passed to input() or to the FileInput constructor, the file is moved
to a backup file and standard output is directed to the input file.
This makes it possible to write a filter that rewrites its input file
in place. If the keyword argument backup=".<some extension>" is also
given, it specifies the extension for the backup file, and the backup
file remains around; by default, the extension is ".bak" and it is
deleted when the output file is closed. In-place filtering is
disabled when standard input is read. XXX The current implementation
does not work for MS-DOS 8+3 filesystems.
XXX Possible additions:
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Return the line number in the current file. Before the first line
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Return the file number of the current file. When no file is currently
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in the module.
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- timeout should be intrinsic to the connection object instead of an
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� N)� monotonic�Telnet� � � � � � �� �� �� �� �� � � � � � � � � � � � � � � � �
� � �
� � � � � � � � � � � � � � � � � � �! �" �# �$ �% �& �' �( �) �* �+ �, �- �. �/ �0 �1 � � � � PollSelectorc @ s e Zd ZdZddejfdd�Zdejfdd�Zdd � Zd
d � Z d d
� Z
dd� Z dd� Z dd� Z
dd� Zd<dd�Zdd� Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zd$d%� Zd&d'� Zd(d)� Zd*d+� Zd,d-� Zd.d/� Zd0d1� Z d2d3� Z d4d5� Z d=d6d7�Z d8d9� Z d:d;� Z!dS )>r a� Telnet interface class.
An instance of this class represents a connection to a telnet
server. The instance is initially not connected; the open()
method must be used to establish a connection. Alternatively, the
host name and optional port number can be passed to the
constructor, too.
Don't try to reopen an already connected instance.
This class has many read_*() methods. Note that some of them
raise EOFError when the end of the connection is read, because
they can return an empty string for other reasons. See the
individual doc strings.
read_until(expected, [timeout])
Read until the expected string has been seen, or a timeout is
hit (default is no timeout); may block.
read_all()
Read all data until EOF; may block.
read_some()
Read at least one byte or EOF; may block.
read_very_eager()
Read all data available already queued or on the socket,
without blocking.
read_eager()
Read either data already queued or some data available on the
socket, without blocking.
read_lazy()
Read all data in the raw queue (processing it first), without
doing any socket I/O.
read_very_lazy()
Reads all data in the cooked queue, without doing any socket
I/O.
read_sb_data()
Reads available data between SB ... SE sequence. Don't block.
set_option_negotiation_callback(callback)
Each time a telnet option is read on the input flow, this callback
(if set) is called with the following parameters :
callback(telnet socket, command, option)
option will be chr(0) when there is no option.
No other action is done afterwards by telnetlib.
Nr c C sh t | _|| _|| _|| _d| _d| _d| _d| _d| _ d| _
d| _ d| _ d| _
|dk rd| �|||� dS )z�Constructor.
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| j �� S )z9Return the fileno() of the socket object used internally.)rO �filenord r[ r[ r\ rm s z
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C s* t |�}| �� | j�|�}|dkrN|| }| jd|� }| j|d� | _|S |dk r`t� | }t� ��}|�| tj� | j �s|�
|�r�t dt | j�| �}| � � | �� | j�||�}|dkr�|| }| jd|� }| j|d� | _|W 5 Q R � S |dk rv|t� }|dk rv�qqvW 5 Q R X | �
� S )a Read until a given string is encountered or until timeout.
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possibly the empty string. Raise EOFError if the connection
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zTelnet.read_allc C s6 | � � | js&| js&| �� | � � q| j}d| _|S )z�Read at least one byte of cooked data unless EOF is hit.
Return b'' if EOF is hit. Block if no data is immediately
available.
rI )rt rR rS r} r� r[ r[ r\ � read_someU s
zTelnet.read_somec C s0 | � � | js(| �� r(| �� | � � q| �� S )a Read everything that's possible without blocking in I/O (eager).
Raise EOFError if connection closed and no cooked data
available. Return b'' if no cooked data available otherwise.
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)rt rS �
sock_availr} r~ rd r[ r[ r\ �read_very_eagerd s
zTelnet.read_very_eagerc C s6 | � � | js.| js.| �� r.| �� | � � q| �� S )z�Read readily available data.
Raise EOFError if connection closed and no cooked data
available. Return b'' if no cooked data available otherwise.
Don't block unless in the midst of an IAC sequence.
)rt rR rS r� r} r~ rd r[ r[ r\ �
read_eagerr s
zTelnet.read_eagerc C s | � � | �� S )a Process and return data that's already in the queues (lazy).
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Return b'' if no cooked data available otherwise. Don't block
unless in the midst of an IAC sequence.
)rt r~ rd r[ r[ r\ � read_lazy� s zTelnet.read_lazyc C s( | j }d| _ |s$| jr$| js$td��|S )z�Return any data available in the cooked queue (very lazy).
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rI ztelnet connection closed)rR rS rP �EOFErrorr� r[ r[ r\ r~ � s
zTelnet.read_very_lazyc C s | j }d| _ |S )a Return any data available in the SB ... SE queue.
Return b'' if no SB ... SE available. Should only be called
after seeing a SB or SE command. When a new SB command is
found, old unread SB data will be discarded. Don't block.
rI )rV r� r[ r[ r\ � read_sb_data� s zTelnet.read_sb_datac C s
|| _ dS )zIProvide a callback function called after each receipt of a telnet option.N)rW )rZ �callbackr[ r[ r\ � set_option_negotiation_callback� s z&Telnet.set_option_negotiation_callbackc C sR ddg}�z | j �r| �� }| jsf|tkr,q |dkr6q |tkrV|| j | || j< q n| j|7 _q t| j�dk�r$|ttt t
fkr�| j|7 _q d| _|tkr�|| j | || j< nh|t kr�d| _d| _ n&|t
kr�d| _| j |d | _ d|d< | j�r| �| j|t� n| �dt|� � q t| j�dkr | jdd� }d| _|}|ttfk�r�| �d|tk�rnd�ppd t|�� | j�r�| �| j||� n| j�tt
| � q |t t
fkr | �d|t k�r�d
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�r, d| _d| _Y nX | j|d | _| j |d | _ d S )
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Set self.eof when connection is closed. Don't block unless in
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rI � r r zIAC %d not recognizedr z IAC %s %d�DO�DONT�WILL�WONTN)rP � rawq_getcharrT �theNULLrn rU rs r� r� r� r� �SBrV �SErW rO �NOOPTri �ordrp r� rR )rZ r� �c�cmd�optr[ r[ r\ rt � sp � �zTelnet.process_rawqc C sZ | j s| �� | jrt�| j | j| jd � }| jd | _| jt| j �krVd| _ d| _|S )z�Get next char from raw queue.
Block if no data is immediately available. Raise EOFError
when connection is closed.
r rI r )rP r} rS r� rQ rs )rZ r� r[ r[ r\ r� � s zTelnet.rawq_getcharc C sL | j t| j�kr d| _d| _ | j�d�}| �d|� | | _| j| | _dS )z�Fill raw queue from exactly one recv() system call.
Block if no data is immediately available. Set self.eof when
connection is closed.
rI r �2 zrecv %rN)rQ rs rP rO Zrecvri rS r� r[ r[ r\ r} s zTelnet.fill_rawqc
C s: t � �*}|�| tj� t|�d��W 5 Q R � S Q R X dS )z-Test whether data is available on the socket.r N)rw rx ry rz �boolr{ )rZ r� r[ r[ r\ r� s zTelnet.sock_availc
C s� t jdkr| �� dS t� ��}|�| tj� |�t jtj� |�� D ]�\}}|j | kr�z | �
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r� t d� Y W 5 Q R � dS X |r�t j
�|�d�� t j
�� qD|j t jkrDt j�� �d�}|s� W 5 Q R � dS | �|� qDq<W 5 Q R X dS )z9Interaction function, emulates a very dumb telnet client.Zwin32N�(*** Connection closed by remote host ***�ascii)r_ �platform� mt_interactrw rx ry rz �stdinr{ Zfileobjr� r� rh �stdoutrr �decode�flush�readline�encode)rZ r� �keyZevents�text�liner[ r[ r\ �interact s*
zTelnet.interactc C s< ddl }|�| jd� tj�� }|s&q8| �|�d�� qdS )z$Multithreaded version of interact().r Nr[ r� )�_thread�start_new_thread�listenerr_ r� r� rr r� )rZ r� r� r[ r[ r\ r� 3 s
zTelnet.mt_interactc C sT z | � � }W n tk
r* td� Y dS X |rDtj�|�d�� q tj�� q dS )z>Helper for mt_interact() -- this executes in the other thread.r� Nr� )r� r� rh r_ r� rr r� r� )rZ �datar[ r[ r\ r� = s zTelnet.listenerc
C sT d}|dd� }t t|��}|D ]0}t|| d�s |s>ddl}|�|| �||< q |dk rdt� | }t� ��}|�| tj � | j
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fS )a� Read until one from a list of a regular expressions matches.
The first argument is a list of regular expressions, either
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Return a tuple of three items: the index in the list of the
first regular expression that matches; the re.Match object
returned; and the text read up till and including the match.
If EOF is read and no text was read, raise EOFError.
Otherwise, when nothing matches, return (-1, None, text) where
text is the text received so far (may be the empty string if a
timeout happened).
If a regular expression ends with a greedy match (e.g. '.*')
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N�searchr ���)�rangers �hasattr�re�compilerv rw rx ry rz rS rt r� rR rg r{ r} r~ r� ) rZ �listrN r� �indicesr� r� r� �m�er� Zreadyr[ r[ r\ �expectJ sB
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re.cpython-38.opt-1.pyc 0000644 00000034130 15145007335 0010545 0 ustar 00 U
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�Zd.d/� d0D �Zd1d� Ze e�d2d��Z e e�d2d��d2��Z i Z d3Z d4d5� Z!e�"e �d6d7� �Z#d8d9� Z$d:d;� Z%ddl&Z&d<d=� Z'e&�(e e'e!� G d>d?� d?�Z)dS )Ja� Support for regular expressions (RE).
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characters outside the US ASCII range.
Regular expressions can contain both special and ordinary characters.
Most ordinary characters, like "A", "a", or "0", are the simplest
regular expressions; they simply match themselves. You can
concatenate ordinary characters, so last matches the string 'last'.
The special characters are:
"." Matches any character except a newline.
"^" Matches the start of the string.
"$" Matches the end of the string or just before the newline at
the end of the string.
"*" Matches 0 or more (greedy) repetitions of the preceding RE.
Greedy means that it will match as many repetitions as possible.
"+" Matches 1 or more (greedy) repetitions of the preceding RE.
"?" Matches 0 or 1 (greedy) of the preceding RE.
*?,+?,?? Non-greedy versions of the previous three special characters.
{m,n} Matches from m to n repetitions of the preceding RE.
{m,n}? Non-greedy version of the above.
"\\" Either escapes special characters or signals a special sequence.
[] Indicates a set of characters.
A "^" as the first character indicates a complementing set.
"|" A|B, creates an RE that will match either A or B.
(...) Matches the RE inside the parentheses.
The contents can be retrieved or matched later in the string.
(?aiLmsux) The letters set the corresponding flags defined below.
(?:...) Non-grouping version of regular parentheses.
(?P<name>...) The substring matched by the group is accessible by name.
(?P=name) Matches the text matched earlier by the group named name.
(?#...) A comment; ignored.
(?=...) Matches if ... matches next, but doesn't consume the string.
(?!...) Matches if ... doesn't match next.
(?<=...) Matches if preceded by ... (must be fixed length).
(?<!...) Matches if not preceded by ... (must be fixed length).
(?(id/name)yes|no) Matches yes pattern if the group with id/name matched,
the (optional) no pattern otherwise.
The special sequences consist of "\\" and a character from the list
below. If the ordinary character is not on the list, then the
resulting RE will match the second character.
\number Matches the contents of the group of the same number.
\A Matches only at the start of the string.
\Z Matches only at the end of the string.
\b Matches the empty string, but only at the start or end of a word.
\B Matches the empty string, but not at the start or end of a word.
\d Matches any decimal digit; equivalent to the set [0-9] in
bytes patterns or string patterns with the ASCII flag.
In string patterns without the ASCII flag, it will match the whole
range of Unicode digits.
\D Matches any non-digit character; equivalent to [^\d].
\s Matches any whitespace character; equivalent to [ \t\n\r\f\v] in
bytes patterns or string patterns with the ASCII flag.
In string patterns without the ASCII flag, it will match the whole
range of Unicode whitespace characters.
\S Matches any non-whitespace character; equivalent to [^\s].
\w Matches any alphanumeric character; equivalent to [a-zA-Z0-9_]
in bytes patterns or string patterns with the ASCII flag.
In string patterns without the ASCII flag, it will match the
range of Unicode alphanumeric characters (letters plus digits
plus underscore).
With LOCALE, it will match the set [0-9_] plus characters defined
as letters for the current locale.
\W Matches the complement of \w.
\\ Matches a literal backslash.
This module exports the following functions:
match Match a regular expression pattern to the beginning of a string.
fullmatch Match a regular expression pattern to all of a string.
search Search a string for the presence of a pattern.
sub Substitute occurrences of a pattern found in a string.
subn Same as sub, but also return the number of substitutions made.
split Split a string by the occurrences of a pattern.
findall Find all occurrences of a pattern in a string.
finditer Return an iterator yielding a Match object for each match.
compile Compile a pattern into a Pattern object.
purge Clear the regular expression cache.
escape Backslash all non-alphanumerics in a string.
Each function other than purge and escape can take an optional 'flags' argument
consisting of one or more of the following module constants, joined by "|".
A, L, and U are mutually exclusive.
A ASCII For string patterns, make \w, \W, \b, \B, \d, \D
match the corresponding ASCII character categories
(rather than the whole Unicode categories, which is the
default).
For bytes patterns, this flag is the only available
behaviour and needn't be specified.
I IGNORECASE Perform case-insensitive matching.
L LOCALE Make \w, \W, \b, \B, dependent on the current locale.
M MULTILINE "^" matches the beginning of lines (after a newline)
as well as the string.
"$" matches the end of lines (before a newline) as well
as the end of the string.
S DOTALL "." matches any character at all, including the newline.
X VERBOSE Ignore whitespace and comments for nicer looking RE's.
U UNICODE For compatibility only. Ignored for string patterns (it
is the default), and forbidden for bytes patterns.
This module also defines an exception 'error'.
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aString = "Doodah",
aList = ["A", "B", 12, 32.1, [1, 2, 3]],
aFloat = 0.1,
anInt = 728,
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anotherString = "<hello & hi there!>",
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aFalseValue = False,
),
someData = b"<binary gunk>",
someMoreData = b"<lots of binary gunk>" * 10,
aDate = datetime.datetime.fromtimestamp(time.mktime(time.gmtime())),
)
with open(fileName, 'wb') as fp:
dump(pl, fp)
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printable ASCII characters.
c C s dt | �t | �f S )Nz%s %s)r@ r? r r r �read_stringnl_noescape_pair� s rB �stringnl_noescape_paira� A pair of newline-terminated strings.
These are str-style strings, without embedded
escapes, or bracketing quotes. They should
consist solely of printable ASCII characters.
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a single blank separating the two strings.
c C s@ t | �}| �|�}t|�|kr(|�d�S td|t|�f ��d S )N�latin-1z2expected %d bytes in a string1, but only %d remain)r! r r% r: r �r r
r r r r � read_string1� s
�rF �string1z�A counted string.
The first argument is a 1-byte unsigned int giving the number
of bytes in the string, and the second argument is that many
bytes.
c C sT t | �}|dk r td| ��| �|�}t|�|kr<|�d�S td|t|�f ��d S )Nr zstring4 byte count < 0: %drD z2expected %d bytes in a string4, but only %d remain)r* r r r% r: rE r r r � read_string4� s
�rH �string4z�A counted string.
The first argument is a 4-byte little-endian signed int giving
the number of bytes in the string, and the second argument is
that many bytes.
c C s: t | �}| �|�}t|�|kr"|S td|t|�f ��d S )Nz1expected %d bytes in a bytes1, but only %d remain)r! r r% r rE r r r � read_bytes1� s
�rJ �bytes1z�A counted bytes string.
The first argument is a 1-byte unsigned int giving the number
of bytes, and the second argument is that many bytes.
c C sP t | �}|tjkr td| ��| �|�}t|�|kr8|S td|t|�f ��d S )Nz#bytes4 byte count > sys.maxsize: %dz1expected %d bytes in a bytes4, but only %d remain)r, �sys�maxsizer r r% rE r r r � read_bytes4� s
�rN �bytes4z�A counted bytes string.
The first argument is a 4-byte little-endian unsigned int giving
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c C sP t | �}|tjkr td| ��| �|�}t|�|kr8|S td|t|�f ��d S )Nz#bytes8 byte count > sys.maxsize: %dz1expected %d bytes in a bytes8, but only %d remain)r/ rL rM r r r% rE r r r � read_bytes8 s
�rP �bytes8z�A counted bytes string.
The first argument is an 8-byte little-endian unsigned int giving
the number of bytes, and the second argument is that many bytes.
c C sT t | �}|tjkr td| ��| �|�}t|�|kr<t|�S td|t|�f ��d S )Nz'bytearray8 byte count > sys.maxsize: %dz5expected %d bytes in a bytearray8, but only %d remain)r/ rL rM r r r% � bytearrayrE r r r �read_bytearray89 s
�rS �
bytearray8z�A counted bytearray.
The first argument is an 8-byte little-endian unsigned int giving
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c C s0 | � � }|�d�std��|d d� }t|d�S )Nr1 z4no newline found when trying to read unicodestringnlr zraw-unicode-escape)r5 r6 r �strr r r r �read_unicodestringnl[ s
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printable ASCII characters, and may contain embedded
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c C sB t | �}| �|�}t|�|kr*t|dd�S td|t|�f ��d S )N�utf-8�
surrogatepassz9expected %d bytes in a unicodestring1, but only %d remain)r! r r% rU r rE r r r �read_unicodestring1u s
�rZ �unicodestring1aA A counted Unicode string.
The first argument is a 1-byte little-endian signed int
giving the number of bytes in the string, and the second
argument-- the UTF-8 encoding of the Unicode string --
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c C sX t | �}|tjkr td| ��| �|�}t|�|kr@t|dd�S td|t|�f ��d S )Nz+unicodestring4 byte count > sys.maxsize: %drX rY z9expected %d bytes in a unicodestring4, but only %d remain)r, rL rM r r r% rU rE r r r �read_unicodestring4� s
�r\ �unicodestring4aA A counted Unicode string.
The first argument is a 4-byte little-endian signed int
giving the number of bytes in the string, and the second
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c C sX t | �}|tjkr td| ��| �|�}t|�|kr@t|dd�S td|t|�f ��d S )Nz+unicodestring8 byte count > sys.maxsize: %drX rY z9expected %d bytes in a unicodestring8, but only %d remain)r/ rL rM r r r% rU rE r r r �read_unicodestring8� s
�r^ �unicodestring8aB A counted Unicode string.
The first argument is an 8-byte little-endian signed int
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c C s. t | ddd�}|dkrdS |dkr&dS t|�S )NF�r: r; s 00s 01T�r= �int�r �sr r r �read_decimalnl_short� s re c C s2 t | ddd�}|dd � dkr*|d d� }t|�S )NFr` r � Lra rc r r r �read_decimalnl_long s rg �decimalnl_shorta� A newline-terminated decimal integer literal.
This never has a trailing 'L', and the integer fit
in a short Python int on the box where the pickle
was written -- but there's no guarantee it will fit
in a short Python int on the box where the pickle
is read.
�decimalnl_longz�A newline-terminated decimal integer literal.
This has a trailing 'L', and can represent integers
of any size.
c C s t | ddd�}t|�S )NFr` )r= �floatrc r r r � read_floatnl- s rk �floatnla� A newline-terminated decimal floating literal.
In general this requires 17 significant digits for roundtrip
identity, and pickling then unpickling infinities, NaNs, and
minus zero doesn't work across boxes, or on some boxes even
on itself (e.g., Windows can't read the strings it produces
for infinities or NaNs).
c C s0 | � d�}t|�dkr$td|�d S td��d S )Nr. z>dr z(not enough data in stream to read float8r$ r r r r � read_float8C s
rm �float8a An 8-byte binary representation of a float, big-endian.
The format is unique to Python, and shared with the struct
module (format string '>d') "in theory" (the struct and pickle
implementations don't share the code -- they should). It's
strongly related to the IEEE-754 double format, and, in normal
cases, is in fact identical to the big-endian 754 double format.
On other boxes the dynamic range is limited to that of a 754
double, and "add a half and chop" rounding is used to reduce
the precision to 53 bits. However, even on a 754 box,
infinities, NaNs, and minus zero may not be handled correctly
(may not survive roundtrip pickling intact).
)� decode_longc C s. t | �}| �|�}t|�|kr&td��t|�S )Nz'not enough data in stream to read long1)r! r r% r ro rE r r r �
read_long1i s
rp �long1a A binary long, little-endian, using 1-byte size.
This first reads one byte as an unsigned size, then reads that
many bytes and interprets them as a little-endian 2's-complement long.
If the size is 0, that's taken as a shortcut for the long 0L.
c C sB t | �}|dk r td| ��| �|�}t|�|kr:td��t|�S )Nr zlong4 byte count < 0: %dz'not enough data in stream to read long4)r* r r r% ro rE r r r �
read_long4� s
rr �long4a� A binary representation of a long, little-endian.
This first reads four bytes as a signed size (but requires the
size to be >= 0), then reads that many bytes and interprets them
as a little-endian 2's-complement long. If the size is 0, that's taken
as a shortcut for the int 0, although LONG1 should really be used
then instead (and in any case where # of bytes < 256).
c @ s e Zd ZdZdd� Zdd� ZdS )� StackObject�r �obtyper c C s* || _ t|t�r|D ]}q|| _|| _d S r )r �
isinstance�tuplerv r )r r rv r Z containedr r r r � s
zStackObject.__init__c C s | j S r �r )r r r r �__repr__� s zStackObject.__repr__N)r r r r r rz r r r r rt � s
rt rb zA Python integer object.ru Z int_or_boolz#A Python integer or boolean object.�boolzA Python boolean object.rj zA Python float object.Z bytes_or_strz*A Python bytes or (Unicode) string object.�byteszA Python bytes object.rR zA Python bytearray object.rU z!A Python (Unicode) string object.�NonezThe Python None object.rx zA Python tuple object.�listzA Python list object.�dictzA Python dict object.�setzA Python set object.� frozensetzA Python frozenset object.�bufferz A Python buffer-like object.�anyz Any kind of object whatsoever.Zmarkaz 'The mark' is a unique object.
Opcodes that operate on a variable number of objects
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some other opcodes grab all the objects from the top of
the stack down to (but not including) the topmost marker
object.
�
stackslicea� An object representing a contiguous slice of the stack.
This is used in conjunction with markobject, to represent all
of the stack following the topmost markobject. For example,
the POP_MARK opcode changes the stack from
[..., markobject, stackslice]
to
[...]
No matter how many object are on the stack after the topmost
markobject, POP_MARK gets rid of all of them (including the
topmost markobject too).
c @ s e Zd ZdZdd� ZdS )�
OpcodeInfo�r �code�arg� stack_before� stack_after�protor c C sB || _ || _|| _|D ]}q|| _|D ]}q&|| _|| _|| _d S r r� ) r r r� r� r� r� r� r �xr r r r d s zOpcodeInfo.__init__Nr r r r r r� E s r� ZINT�Ia� Push an integer or bool.
The argument is a newline-terminated decimal literal string.
The intent may have been that this always fit in a short Python int,
but INT can be generated in pickles written on a 64-bit box that
require a Python long on a 32-bit box. The difference between this
and LONG then is that INT skips a trailing 'L', and produces a short
int whenever possible.
Another difference is due to that, when bool was introduced as a
distinct type in 2.3, builtin names True and False were also added to
2.2.2, mapping to ints 1 and 0. For compatibility in both directions,
True gets pickled as INT + "I01\n", and False as INT + "I00\n".
Leading zeroes are never produced for a genuine integer. The 2.3
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earlier unpicklers ignore the leading "0" and return the int.
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This handles the full range of Python (short) integers on a 32-bit
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BININT1 or BININT2 saves space.
ZBININT1�Kz�Push a one-byte unsigned integer.
This is a space optimization for pickling very small non-negative ints,
in range(256).
ZBININT2�Mz�Push a two-byte unsigned integer.
This is a space optimization for pickling small positive ints, in
range(256, 2**16). Integers in range(256) can also be pickled via
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ZLONG�La� Push a long integer.
The same as INT, except that the literal ends with 'L', and always
unpickles to a Python long. There doesn't seem a real purpose to the
trailing 'L'.
Note that LONG takes time quadratic in the number of digits when
unpickling (this is simply due to the nature of decimal->binary
conversion). Proto 2 added linear-time (in C; still quadratic-time
in Python) LONG1 and LONG4 opcodes.
ZLONG1� z|Long integer using one-byte length.
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The argument is a repr-style string, with bracketing quote characters,
and perhaps embedded escapes. The argument extends until the next
newline character. These are usually decoded into a str instance
using the encoding given to the Unpickler constructor. or the default,
'ASCII'. If the encoding given was 'bytes' however, they will be
decoded as bytes object instead.
Z BINSTRING�Ta� Push a Python string object.
There are two arguments: the first is a 4-byte little-endian
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second is that many bytes, which are taken literally as the string
content. These are usually decoded into a str instance using the
encoding given to the Unpickler constructor. or the default,
'ASCII'. If the encoding given was 'bytes' however, they will be
decoded as bytes object instead.
ZSHORT_BINSTRING�Ua� Push a Python string object.
There are two arguments: the first is a 1-byte unsigned int giving
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bytes, which are taken literally as the string content. These are
usually decoded into a str instance using the encoding given to
the Unpickler constructor. or the default, 'ASCII'. If the
encoding given was 'bytes' however, they will be decoded as bytes
object instead.
ZBINBYTES�B� z�Push a Python bytes object.
There are two arguments: the first is a 4-byte little-endian unsigned int
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taken literally as the bytes content.
ZSHORT_BINBYTES�Cz�Push a Python bytes object.
There are two arguments: the first is a 1-byte unsigned int giving
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literally as the string content.
Z BINBYTES8� z�Push a Python bytes object.
There are two arguments: the first is an 8-byte unsigned int giving
the number of bytes in the string, and the second is that many bytes,
which are taken literally as the string content.
Z
BYTEARRAY8� � z�Push a Python bytearray object.
There are two arguments: the first is an 8-byte unsigned int giving
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There are two arguments: the first is a 1-byte little-endian signed int
giving the number of bytes in the string. The second is that many
bytes, and is the UTF-8 encoding of the Unicode string.
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BINUNICODE�Xa Push a Python Unicode string object.
There are two arguments: the first is a 4-byte little-endian unsigned int
giving the number of bytes in the string. The second is that many
bytes, and is the UTF-8 encoding of the Unicode string.
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There are two arguments: the first is an 8-byte little-endian signed int
giving the number of bytes in the string. The second is that many
bytes, and is the UTF-8 encoding of the Unicode string.
ZFLOAT�Fa� Newline-terminated decimal float literal.
The argument is repr(a_float), and in general requires 17 significant
digits for roundtrip conversion to be an identity (this is so for
IEEE-754 double precision values, which is what Python float maps to
on most boxes).
In general, FLOAT cannot be used to transport infinities, NaNs, or
minus zero across boxes (or even on a single box, if the platform C
library can't read the strings it produces for such things -- Windows
is like that), but may do less damage than BINFLOAT on boxes with
greater precision or dynamic range than IEEE-754 double.
ZBINFLOAT�Ga� Float stored in binary form, with 8 bytes of data.
This generally requires less than half the space of FLOAT encoding.
In general, BINFLOAT cannot be used to transport infinities, NaNs, or
minus zero, raises an exception if the exponent exceeds the range of
an IEEE-754 double, and retains no more than 53 bits of precision (if
there are more than that, "add a half and chop" rounding is used to
cut it back to 53 significant bits).
Z
EMPTY_LIST�]zPush an empty list.ZAPPEND�az�Append an object to a list.
Stack before: ... pylist anyobject
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although pylist is really extended in-place.
ZAPPENDS�ez�Extend a list by a slice of stack objects.
Stack before: ... pylist markobject stackslice
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although pylist is really extended in-place.
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All the stack entries following the topmost markobject are placed into
a single Python list, which single list object replaces all of the
stack from the topmost markobject onward. For example,
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Stack after: ... [1, 2, 3, 'abc']
Z EMPTY_TUPLE�)zPush an empty tuple.ZTUPLE�tav Build a tuple out of the topmost stack slice, after markobject.
All the stack entries following the topmost markobject are placed into
a single Python tuple, which single tuple object replaces all of the
stack from the topmost markobject onward. For example,
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Stack after: ... (1, 2, 3, 'abc')
ZTUPLE1�
z�Build a one-tuple out of the topmost item on the stack.
This code pops one value off the stack and pushes a tuple of
length 1 whose one item is that value back onto it. In other
words:
stack[-1] = tuple(stack[-1:])
ZTUPLE2� a Build a two-tuple out of the top two items on the stack.
This code pops two values off the stack and pushes a tuple of
length 2 whose items are those values back onto it. In other
words:
stack[-2:] = [tuple(stack[-2:])]
ZTUPLE3� a Build a three-tuple out of the top three items on the stack.
This code pops three values off the stack and pushes a tuple of
length 3 whose items are those values back onto it. In other
words:
stack[-3:] = [tuple(stack[-3:])]
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EMPTY_DICT�}zPush an empty dict.ZDICT�da� Build a dict out of the topmost stack slice, after markobject.
All the stack entries following the topmost markobject are placed into
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key, value, key, value, .... For example,
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Stack after: ... {1: 2, 3: 'abc'}
ZSETITEMrd z�Add a key+value pair to an existing dict.
Stack before: ... pydict key value
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where pydict has been modified via pydict[key] = value.
ZSETITEMS�ua\ Add an arbitrary number of key+value pairs to an existing dict.
The slice of the stack following the topmost markobject is taken as
an alternating sequence of keys and values, added to the dict
immediately under the topmost markobject. Everything at and after the
topmost markobject is popped, leaving the mutated dict at the top
of the stack.
Stack before: ... pydict markobject key_1 value_1 ... key_n value_n
Stack after: ... pydict
where pydict has been modified via pydict[key_i] = value_i for i in
1, 2, ..., n, and in that order.
Z EMPTY_SET� zPush an empty set.ZADDITEMS� a$ Add an arbitrary number of items to an existing set.
The slice of the stack following the topmost markobject is taken as
a sequence of items, added to the set immediately under the topmost
markobject. Everything at and after the topmost markobject is popped,
leaving the mutated set at the top of the stack.
Stack before: ... pyset markobject item_1 ... item_n
Stack after: ... pyset
where pyset has been modified via pyset.add(item_i) = item_i for i in
1, 2, ..., n, and in that order.
Z FROZENSET� az Build a frozenset out of the topmost slice, after markobject.
All the stack entries following the topmost markobject are placed into
a single Python frozenset, which single frozenset object replaces all
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Stack after: ... frozenset({1, 2, 3})
�POP�0z<Discard the top stack item, shrinking the stack by one item.ZDUP�2z=Push the top stack item onto the stack again, duplicating it.�MARK�(z�Push markobject onto the stack.
markobject is a unique object, used by other opcodes to identify a
region of the stack containing a variable number of objects for them
to work on. See markobject.doc for more detail.
ZPOP_MARK�1a Pop all the stack objects at and above the topmost markobject.
When an opcode using a variable number of stack objects is done,
POP_MARK is used to remove those objects, and to remove the markobject
that delimited their starting position on the stack.
�GET�gz�Read an object from the memo and push it on the stack.
The index of the memo object to push is given by the newline-terminated
decimal string following. BINGET and LONG_BINGET are space-optimized
versions.
�BINGET�hz�Read an object from the memo and push it on the stack.
The index of the memo object to push is given by the 1-byte unsigned
integer following.
� LONG_BINGET�jz�Read an object from the memo and push it on the stack.
The index of the memo object to push is given by the 4-byte unsigned
little-endian integer following.
�PUT�pz�Store the stack top into the memo. The stack is not popped.
The index of the memo location to write into is given by the newline-
terminated decimal string following. BINPUT and LONG_BINPUT are
space-optimized versions.
�BINPUTr< z�Store the stack top into the memo. The stack is not popped.
The index of the memo location to write into is given by the 1-byte
unsigned integer following.
� LONG_BINPUT�rz�Store the stack top into the memo. The stack is not popped.
The index of the memo location to write into is given by the 4-byte
unsigned little-endian integer following.
�MEMOIZE� z�Store the stack top into the memo. The stack is not popped.
The index of the memo location to write is the number of
elements currently present in the memo.
ZEXT1� a� Extension code.
This code and the similar EXT2 and EXT4 allow using a registry
of popular objects that are pickled by name, typically classes.
It is envisioned that through a global negotiation and
registration process, third parties can set up a mapping between
ints and object names.
In order to guarantee pickle interchangeability, the extension
code registry ought to be global, although a range of codes may
be reserved for private use.
EXT1 has a 1-byte integer argument. This is used to index into the
extension registry, and the object at that index is pushed on the stack.
ZEXT2� zNExtension code.
See EXT1. EXT2 has a two-byte integer argument.
ZEXT4� zOExtension code.
See EXT1. EXT4 has a four-byte integer argument.
ZGLOBAL�ca� Push a global object (module.attr) on the stack.
Two newline-terminated strings follow the GLOBAL opcode. The first is
taken as a module name, and the second as a class name. The class
object module.class is pushed on the stack. More accurately, the
object returned by self.find_class(module, class) is pushed on the
stack, so unpickling subclasses can override this form of lookup.
Z STACK_GLOBAL� z7Push a global object (module.attr) on the stack.
ZREDUCE�RaL Push an object built from a callable and an argument tuple.
The opcode is named to remind of the __reduce__() method.
Stack before: ... callable pytuple
Stack after: ... callable(*pytuple)
The callable and the argument tuple are the first two items returned
by a __reduce__ method. Applying the callable to the argtuple is
supposed to reproduce the original object, or at least get it started.
If the __reduce__ method returns a 3-tuple, the last component is an
argument to be passed to the object's __setstate__, and then the REDUCE
opcode is followed by code to create setstate's argument, and then a
BUILD opcode to apply __setstate__ to that argument.
If not isinstance(callable, type), REDUCE complains unless the
callable has been registered with the copyreg module's
safe_constructors dict, or the callable has a magic
'__safe_for_unpickling__' attribute with a true value. I'm not sure
why it does this, but I've sure seen this complaint often enough when
I didn't want to <wink>.
ZBUILD�ba� Finish building an object, via __setstate__ or dict update.
Stack before: ... anyobject argument
Stack after: ... anyobject
where anyobject may have been mutated, as follows:
If the object has a __setstate__ method,
anyobject.__setstate__(argument)
is called.
Else the argument must be a dict, the object must have a __dict__, and
the object is updated via
anyobject.__dict__.update(argument)
ZINST�iaq Build a class instance.
This is the protocol 0 version of protocol 1's OBJ opcode.
INST is followed by two newline-terminated strings, giving a
module and class name, just as for the GLOBAL opcode (and see
GLOBAL for more details about that). self.find_class(module, name)
is used to get a class object.
In addition, all the objects on the stack following the topmost
markobject are gathered into a tuple and popped (along with the
topmost markobject), just as for the TUPLE opcode.
Now it gets complicated. If all of these are true:
+ The argtuple is empty (markobject was at the top of the stack
at the start).
+ The class object does not have a __getinitargs__ attribute.
then we want to create an old-style class instance without invoking
its __init__() method (pickle has waffled on this over the years; not
calling __init__() is current wisdom). In this case, an instance of
an old-style dummy class is created, and then we try to rebind its
__class__ attribute to the desired class object. If this succeeds,
the new instance object is pushed on the stack, and we're done.
Else (the argtuple is not empty, it's not an old-style class object,
or the class object does have a __getinitargs__ attribute), the code
first insists that the class object have a __safe_for_unpickling__
attribute. Unlike as for the __safe_for_unpickling__ check in REDUCE,
it doesn't matter whether this attribute has a true or false value, it
only matters whether it exists (XXX this is a bug). If
__safe_for_unpickling__ doesn't exist, UnpicklingError is raised.
Else (the class object does have a __safe_for_unpickling__ attr),
the class object obtained from INST's arguments is applied to the
argtuple obtained from the stack, and the resulting instance object
is pushed on the stack.
NOTE: checks for __safe_for_unpickling__ went away in Python 2.3.
NOTE: the distinction between old-style and new-style classes does
not make sense in Python 3.
ZOBJ�oa� Build a class instance.
This is the protocol 1 version of protocol 0's INST opcode, and is
very much like it. The major difference is that the class object
is taken off the stack, allowing it to be retrieved from the memo
repeatedly if several instances of the same class are created. This
can be much more efficient (in both time and space) than repeatedly
embedding the module and class names in INST opcodes.
Unlike INST, OBJ takes no arguments from the opcode stream. Instead
the class object is taken off the stack, immediately above the
topmost markobject:
Stack before: ... markobject classobject stackslice
Stack after: ... new_instance_object
As for INST, the remainder of the stack above the markobject is
gathered into an argument tuple, and then the logic seems identical,
except that no __safe_for_unpickling__ check is done (XXX this is
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get the class object. That was always the intent; the implementations
had diverged for accidental reasons.
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onto the stack.
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The stack before should be thought of as containing a class
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cls.__new__(cls, *args, *kwargs) is pushed back onto the stack.
�PROTO� z�Protocol version indicator.
For protocol 2 and above, a pickle must start with this opcode.
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ZSTOP�.z�Stop the unpickling machine.
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object that returns is pushed on the stack. There is no implementation
of persistent_load() in Python's unpickler: it must be supplied by an
unpickler subclass.
Z BINPERSID�QaX Push an object identified by a persistent ID.
Like PERSID, except the persistent ID is popped off the stack (instead
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returns is pushed on the stack. See PERSID for more detail.
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>>> import pickle
>>> x = [1, 2, (3, 4), {b'abc': "def"}]
>>> pkl0 = pickle.dumps(x, 0)
>>> dis(pkl0)
0: ( MARK
1: l LIST (MARK at 0)
2: p PUT 0
5: I INT 1
8: a APPEND
9: I INT 2
12: a APPEND
13: ( MARK
14: I INT 3
17: I INT 4
20: t TUPLE (MARK at 13)
21: p PUT 1
24: a APPEND
25: ( MARK
26: d DICT (MARK at 25)
27: p PUT 2
30: c GLOBAL '_codecs encode'
46: p PUT 3
49: ( MARK
50: V UNICODE 'abc'
55: p PUT 4
58: V UNICODE 'latin1'
66: p PUT 5
69: t TUPLE (MARK at 49)
70: p PUT 6
73: R REDUCE
74: p PUT 7
77: V UNICODE 'def'
82: p PUT 8
85: s SETITEM
86: a APPEND
87: . STOP
highest protocol among opcodes = 0
Try again with a "binary" pickle.
>>> pkl1 = pickle.dumps(x, 1)
>>> dis(pkl1)
0: ] EMPTY_LIST
1: q BINPUT 0
3: ( MARK
4: K BININT1 1
6: K BININT1 2
8: ( MARK
9: K BININT1 3
11: K BININT1 4
13: t TUPLE (MARK at 8)
14: q BINPUT 1
16: } EMPTY_DICT
17: q BINPUT 2
19: c GLOBAL '_codecs encode'
35: q BINPUT 3
37: ( MARK
38: X BINUNICODE 'abc'
46: q BINPUT 4
48: X BINUNICODE 'latin1'
59: q BINPUT 5
61: t TUPLE (MARK at 37)
62: q BINPUT 6
64: R REDUCE
65: q BINPUT 7
67: X BINUNICODE 'def'
75: q BINPUT 8
77: s SETITEM
78: e APPENDS (MARK at 3)
79: . STOP
highest protocol among opcodes = 1
Exercise the INST/OBJ/BUILD family.
>>> import pickletools
>>> dis(pickle.dumps(pickletools.dis, 0))
0: c GLOBAL 'pickletools dis'
17: p PUT 0
20: . STOP
highest protocol among opcodes = 0
>>> from pickletools import _Example
>>> x = [_Example(42)] * 2
>>> dis(pickle.dumps(x, 0))
0: ( MARK
1: l LIST (MARK at 0)
2: p PUT 0
5: c GLOBAL 'copy_reg _reconstructor'
30: p PUT 1
33: ( MARK
34: c GLOBAL 'pickletools _Example'
56: p PUT 2
59: c GLOBAL '__builtin__ object'
79: p PUT 3
82: N NONE
83: t TUPLE (MARK at 33)
84: p PUT 4
87: R REDUCE
88: p PUT 5
91: ( MARK
92: d DICT (MARK at 91)
93: p PUT 6
96: V UNICODE 'value'
103: p PUT 7
106: I INT 42
110: s SETITEM
111: b BUILD
112: a APPEND
113: g GET 5
116: a APPEND
117: . STOP
highest protocol among opcodes = 0
>>> dis(pickle.dumps(x, 1))
0: ] EMPTY_LIST
1: q BINPUT 0
3: ( MARK
4: c GLOBAL 'copy_reg _reconstructor'
29: q BINPUT 1
31: ( MARK
32: c GLOBAL 'pickletools _Example'
54: q BINPUT 2
56: c GLOBAL '__builtin__ object'
76: q BINPUT 3
78: N NONE
79: t TUPLE (MARK at 31)
80: q BINPUT 4
82: R REDUCE
83: q BINPUT 5
85: } EMPTY_DICT
86: q BINPUT 6
88: X BINUNICODE 'value'
98: q BINPUT 7
100: K BININT1 42
102: s SETITEM
103: b BUILD
104: h BINGET 5
106: e APPENDS (MARK at 3)
107: . STOP
highest protocol among opcodes = 1
Try "the canonical" recursive-object test.
>>> L = []
>>> T = L,
>>> L.append(T)
>>> L[0] is T
True
>>> T[0] is L
True
>>> L[0][0] is L
True
>>> T[0][0] is T
True
>>> dis(pickle.dumps(L, 0))
0: ( MARK
1: l LIST (MARK at 0)
2: p PUT 0
5: ( MARK
6: g GET 0
9: t TUPLE (MARK at 5)
10: p PUT 1
13: a APPEND
14: . STOP
highest protocol among opcodes = 0
>>> dis(pickle.dumps(L, 1))
0: ] EMPTY_LIST
1: q BINPUT 0
3: ( MARK
4: h BINGET 0
6: t TUPLE (MARK at 3)
7: q BINPUT 1
9: a APPEND
10: . STOP
highest protocol among opcodes = 1
Note that, in the protocol 0 pickle of the recursive tuple, the disassembler
has to emulate the stack in order to realize that the POP opcode at 16 gets
rid of the MARK at 0.
>>> dis(pickle.dumps(T, 0))
0: ( MARK
1: ( MARK
2: l LIST (MARK at 1)
3: p PUT 0
6: ( MARK
7: g GET 0
10: t TUPLE (MARK at 6)
11: p PUT 1
14: a APPEND
15: 0 POP
16: 0 POP (MARK at 0)
17: g GET 1
20: . STOP
highest protocol among opcodes = 0
>>> dis(pickle.dumps(T, 1))
0: ( MARK
1: ] EMPTY_LIST
2: q BINPUT 0
4: ( MARK
5: h BINGET 0
7: t TUPLE (MARK at 4)
8: q BINPUT 1
10: a APPEND
11: 1 POP_MARK (MARK at 0)
12: h BINGET 1
14: . STOP
highest protocol among opcodes = 1
Try protocol 2.
>>> dis(pickle.dumps(L, 2))
0: \x80 PROTO 2
2: ] EMPTY_LIST
3: q BINPUT 0
5: h BINGET 0
7: \x85 TUPLE1
8: q BINPUT 1
10: a APPEND
11: . STOP
highest protocol among opcodes = 2
>>> dis(pickle.dumps(T, 2))
0: \x80 PROTO 2
2: ] EMPTY_LIST
3: q BINPUT 0
5: h BINGET 0
7: \x85 TUPLE1
8: q BINPUT 1
10: a APPEND
11: 0 POP
12: h BINGET 1
14: . STOP
highest protocol among opcodes = 2
Try protocol 3 with annotations:
>>> dis(pickle.dumps(T, 3), annotate=1)
0: \x80 PROTO 3 Protocol version indicator.
2: ] EMPTY_LIST Push an empty list.
3: q BINPUT 0 Store the stack top into the memo. The stack is not popped.
5: h BINGET 0 Read an object from the memo and push it on the stack.
7: \x85 TUPLE1 Build a one-tuple out of the topmost item on the stack.
8: q BINPUT 1 Store the stack top into the memo. The stack is not popped.
10: a APPEND Append an object to a list.
11: 0 POP Discard the top stack item, shrinking the stack by one item.
12: h BINGET 1 Read an object from the memo and push it on the stack.
14: . STOP Stop the unpickling machine.
highest protocol among opcodes = 2
a=
>>> import pickle
>>> import io
>>> f = io.BytesIO()
>>> p = pickle.Pickler(f, 2)
>>> x = [1, 2, 3]
>>> p.dump(x)
>>> p.dump(x)
>>> f.seek(0)
0
>>> memo = {}
>>> dis(f, memo=memo)
0: \x80 PROTO 2
2: ] EMPTY_LIST
3: q BINPUT 0
5: ( MARK
6: K BININT1 1
8: K BININT1 2
10: K BININT1 3
12: e APPENDS (MARK at 5)
13: . STOP
highest protocol among opcodes = 2
>>> dis(f, memo=memo)
14: \x80 PROTO 2
16: h BINGET 0
18: . STOP
highest protocol among opcodes = 2
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sunau.cpython-38.pyc 0000644 00000041272 15145007335 0010340 0 ustar 00 U
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An audio file consists of a header followed by the data. The structure
of the header is as follows.
+---------------+
| magic word |
+---------------+
| header size |
+---------------+
| data size |
+---------------+
| encoding |
+---------------+
| sample rate |
+---------------+
| # of channels |
+---------------+
| info |
| |
+---------------+
The magic word consists of the 4 characters '.snd'. Apart from the
info field, all header fields are 4 bytes in size. They are all
32-bit unsigned integers encoded in big-endian byte order.
The header size really gives the start of the data.
The data size is the physical size of the data. From the other
parameters the number of frames can be calculated.
The encoding gives the way in which audio samples are encoded.
Possible values are listed below.
The info field currently consists of an ASCII string giving a
human-readable description of the audio file. The info field is
padded with NUL bytes to the header size.
Usage.
Reading audio files:
f = sunau.open(file, 'r')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods read(), seek(), and close().
When the setpos() and rewind() methods are not used, the seek()
method is not necessary.
This returns an instance of a class with the following public methods:
getnchannels() -- returns number of audio channels (1 for
mono, 2 for stereo)
getsampwidth() -- returns sample width in bytes
getframerate() -- returns sampling frequency
getnframes() -- returns number of audio frames
getcomptype() -- returns compression type ('NONE' or 'ULAW')
getcompname() -- returns human-readable version of
compression type ('not compressed' matches 'NONE')
getparams() -- returns a namedtuple consisting of all of the
above in the above order
getmarkers() -- returns None (for compatibility with the
aifc module)
getmark(id) -- raises an error since the mark does not
exist (for compatibility with the aifc module)
readframes(n) -- returns at most n frames of audio
rewind() -- rewind to the beginning of the audio stream
setpos(pos) -- seek to the specified position
tell() -- return the current position
close() -- close the instance (make it unusable)
The position returned by tell() and the position given to setpos()
are compatible and have nothing to do with the actual position in the
file.
The close() method is called automatically when the class instance
is destroyed.
Writing audio files:
f = sunau.open(file, 'w')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods write(), tell(), seek(), and
close().
This returns an instance of a class with the following public methods:
setnchannels(n) -- set the number of channels
setsampwidth(n) -- set the sample width
setframerate(n) -- set the frame rate
setnframes(n) -- set the number of frames
setcomptype(type, name)
-- set the compression type and the
human-readable compression type
setparams(tuple)-- set all parameters at once
tell() -- return current position in output file
writeframesraw(data)
-- write audio frames without pathing up the
file header
writeframes(data)
-- write audio frames and patch up the file header
close() -- patch up the file header and close the
output file
You should set the parameters before the first writeframesraw or
writeframes. The total number of frames does not need to be set,
but when it is set to the correct value, the header does not have to
be patched up.
It is best to first set all parameters, perhaps possibly the
compression type, and then write audio frames using writeframesraw.
When all frames have been written, either call writeframes(b'') or
close() to patch up the sizes in the header.
The close() method is called automatically when the class instance
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�ReP� � d$S ){a� Module doctest -- a framework for running examples in docstrings.
In simplest use, end each module M to be tested with:
def _test():
import doctest
doctest.testmod()
if __name__ == "__main__":
_test()
Then running the module as a script will cause the examples in the
docstrings to get executed and verified:
python M.py
This won't display anything unless an example fails, in which case the
failing example(s) and the cause(s) of the failure(s) are printed to stdout
(why not stderr? because stderr is a lame hack <0.2 wink>), and the final
line of output is "Test failed.".
Run it with the -v switch instead:
python M.py -v
and a detailed report of all examples tried is printed to stdout, along
with assorted summaries at the end.
You can force verbose mode by passing "verbose=True" to testmod, or prohibit
it by passing "verbose=False". In either of those cases, sys.argv is not
examined by testmod.
There are a variety of other ways to run doctests, including integration
with the unittest framework, and support for running non-Python text
files containing doctests. There are also many ways to override parts
of doctest's default behaviors. See the Library Reference Manual for
details.
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Return the module specified by `module`. In particular:
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A single doctest example, consisting of source code and expected
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A collection of doctest examples that should be run in a single
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Given a regular expression match from `_EXAMPLE_RE` (`m`),
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example's source code (with prompts and indentation stripped);
and `want` is the example's expected output (with indentation
stripped).
`name` is the string's name, and `lineno` is the line number
where the example starts; both are used for error messages.
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Return a dictionary containing option overrides extracted from
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Given the lines of a source string (including prompts and
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followed by a space character. If any line is not followed by
a space character, then raise ValueError.
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Check that every line in the given list starts with the given
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A class used to extract the DocTests that are relevant to a given
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objects. Doctests can currently be extracted from the following
object types: modules, functions, classes, methods, staticmethods,
classmethods, and properties.
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Create a new doctest finder.
The optional argument `parser` specifies a class or
function that should be used to create new DocTest objects (or
objects that implement the same interface as DocTest). The
signature for this factory function should match the signature
of the DocTest constructor.
If the optional argument `recurse` is false, then `find` will
only examine the given object, and not any contained objects.
If the optional argument `exclude_empty` is false, then `find`
will include tests for objects with empty docstrings.
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Return a list of the DocTests that are defined by the given
object's docstring, or by any of its contained objects'
docstrings.
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the given object. If the module is not specified or is None, then
the test finder will attempt to automatically determine the
correct module. The object's module is used:
- As a default namespace, if `globs` is not specified.
- To prevent the DocTestFinder from extracting DocTests
from objects that are imported from other modules.
- To find the name of the file containing the object.
- To help find the line number of the object within its
file.
Contained objects whose module does not match `module` are ignored.
If `module` is False, no attempt to find the module will be made.
This is obscure, of use mostly in tests: if `module` is False, or
is None but cannot be found automatically, then all objects are
considered to belong to the (non-existent) module, so all contained
objects will (recursively) be searched for doctests.
The globals for each DocTest is formed by combining `globs`
and `extraglobs` (bindings in `extraglobs` override bindings
in `globs`). A new copy of the globals dictionary is created
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otherwise. If `extraglobs` is not specified, then it defaults
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Find tests for the given object and any contained objects, and
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Return a DocTest for the given object, if it defines a docstring;
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Return a line number of the given object's docstring. Note:
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A class used to run DocTest test cases, and accumulate statistics.
The `run` method is used to process a single DocTest case. It
returns a tuple `(f, t)`, where `t` is the number of test cases
tried, and `f` is the number of test cases that failed.
>>> tests = DocTestFinder().find(_TestClass)
>>> runner = DocTestRunner(verbose=False)
>>> tests.sort(key = lambda test: test.name)
>>> for test in tests:
... print(test.name, '->', runner.run(test))
_TestClass -> TestResults(failed=0, attempted=2)
_TestClass.__init__ -> TestResults(failed=0, attempted=2)
_TestClass.get -> TestResults(failed=0, attempted=2)
_TestClass.square -> TestResults(failed=0, attempted=1)
The `summarize` method prints a summary of all the test cases that
have been run by the runner, and returns an aggregated `(f, t)`
tuple:
>>> runner.summarize(verbose=1)
4 items passed all tests:
2 tests in _TestClass
2 tests in _TestClass.__init__
2 tests in _TestClass.get
1 tests in _TestClass.square
7 tests in 4 items.
7 passed and 0 failed.
Test passed.
TestResults(failed=0, attempted=7)
The aggregated number of tried examples and failed examples is
also available via the `tries` and `failures` attributes:
>>> runner.tries
7
>>> runner.failures
0
The comparison between expected outputs and actual outputs is done
by an `OutputChecker`. This comparison may be customized with a
number of option flags; see the documentation for `testmod` for
more information. If the option flags are insufficient, then the
comparison may also be customized by passing a subclass of
`OutputChecker` to the constructor.
The test runner's display output can be controlled in two ways.
First, an output function (`out) can be passed to
`TestRunner.run`; this function will be called with strings that
should be displayed. It defaults to `sys.stdout.write`. If
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overriding the methods `report_start`, `report_success`,
`report_unexpected_exception`, and `report_failure`.
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Create a new test runner.
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outputs of doctest examples.
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only failures if false; by default, it's true iff '-v' is in
sys.argv.
Optional argument `optionflags` can be used to control how the
test runner compares expected output to actual output, and how
it displays failures. See the documentation for `testmod` for
more information.
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Run the examples in `test`. Write the outcome of each example
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r� N)r r/ r+ r r )rj r rW �t�f2�t2r, r, r- Z__record_outcome| s z DocTestRunner.__record_outcomez.<doctest (?P<name>.+)\[(?P<examplenum>\d+)\]>$c C sV | j �|�}|rF|�d�| jjkrF| jjt|�d�� }|jjdd�S | � ||�S d S )Nr+ r5 T��keepends)
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Run the examples in `test`, and display the results using the
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be cleared after the test runs, to help with garbage
collection. If you would like to examine the namespace after
the test completes, then use `clear_globs=False`.
`compileflags` gives the set of flags that should be used by
the Python compiler when running the examples. If not
specified, then it will default to the set of future-import
flags that apply to `globs`.
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A class used to check the whether the actual output from a doctest
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- got: the actual output
c C s || _ || _|| _d S rl )r r! ry )rj r r! ry r, r, r- r� � s zDocTestFailure.__init__c C s
t | j�S rl �r: r r� r, r, r- �__str__� s zDocTestFailure.__str__N�r6 rp rq r� r� ra r, r, r, r- r � s
c @ s e Zd ZdZdd� Zdd� ZdS )r z�A DocTest example has encountered an unexpected exception
The exception instance has variables:
- test: the DocTest object being run
- example: the Example object that failed
- exc_info: the exception info
c C s || _ || _|| _d S rl )r r! rd )rj r r! rd r, r, r- r� � s z UnexpectedException.__init__c C s
t | j�S rl r` r� r, r, r- ra � s zUnexpectedException.__str__Nrb r, r, r, r- r � s
c @ s* e Zd ZdZd
dd�Zdd� Zdd � ZdS ) r a� Run doc tests but raise an exception as soon as there is a failure.
If an unexpected exception occurs, an UnexpectedException is raised.
It contains the test, the example, and the original exception:
>>> runner = DebugRunner(verbose=False)
>>> test = DocTestParser().get_doctest('>>> raise KeyError\n42',
... {}, 'foo', 'foo.py', 0)
>>> try:
... runner.run(test)
... except UnexpectedException as f:
... failure = f
>>> failure.test is test
True
>>> failure.example.want
'42\n'
>>> exc_info = failure.exc_info
>>> raise exc_info[1] # Already has the traceback
Traceback (most recent call last):
...
KeyError
We wrap the original exception to give the calling application
access to the test and example information.
If the output doesn't match, then a DocTestFailure is raised:
>>> test = DocTestParser().get_doctest('''
... >>> x = 1
... >>> x
... 2
... ''', {}, 'foo', 'foo.py', 0)
>>> try:
... runner.run(test)
... except DocTestFailure as f:
... failure = f
DocTestFailure objects provide access to the test:
>>> failure.test is test
True
As well as to the example:
>>> failure.example.want
'2\n'
and the actual output:
>>> failure.got
'1\n'
If a failure or error occurs, the globals are left intact:
>>> del test.globs['__builtins__']
>>> test.globs
{'x': 1}
>>> test = DocTestParser().get_doctest('''
... >>> x = 2
... >>> raise KeyError
... ''', {}, 'foo', 'foo.py', 0)
>>> runner.run(test)
Traceback (most recent call last):
...
doctest.UnexpectedException: <DocTest foo from foo.py:0 (2 examples)>
>>> del test.globs['__builtins__']
>>> test.globs
{'x': 2}
But the globals are cleared if there is no error:
>>> test = DocTestParser().get_doctest('''
... >>> x = 2
... ''', {}, 'foo', 'foo.py', 0)
>>> runner.run(test)
TestResults(failed=0, attempted=1)
>>> test.globs
{}
NTc C s$ t �| |||d�}|r |j�� |S )NF)r rR r1 rM )rj r r2 r� rQ �rr, r, r- rR 3 s
zDebugRunner.runc C s t |||��d S rl )r r( r, r, r- r) 9 s z'DebugRunner.report_unexpected_exceptionc C s t |||��d S rl )r r# r, r, r- r' < s zDebugRunner.report_failure)NNT)r6 rp rq r� rR r) r' r, r, r, r- r � s Z
TFc C s� | dkrt j�d�} t�| �s,td| f ��|dkr:| j}t|d�} |rVt||d�}
n t ||d�}
| j
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m=None, name=None, globs=None, verbose=None, report=True,
optionflags=0, extraglobs=None, raise_on_error=False,
exclude_empty=False
Test examples in docstrings in functions and classes reachable
from module m (or the current module if m is not supplied), starting
with m.__doc__.
Also test examples reachable from dict m.__test__ if it exists and is
not None. m.__test__ maps names to functions, classes and strings;
function and class docstrings are tested even if the name is private;
strings are tested directly, as if they were docstrings.
Return (#failures, #tests).
See help(doctest) for an overview.
Optional keyword arg "name" gives the name of the module; by default
use m.__name__.
Optional keyword arg "globs" gives a dict to be used as the globals
when executing examples; by default, use m.__dict__. A copy of this
dict is actually used for each docstring, so that each docstring's
examples start with a clean slate.
Optional keyword arg "extraglobs" gives a dictionary that should be
merged into the globals that are used to execute examples. By
default, no extra globals are used. This is new in 2.4.
Optional keyword arg "verbose" prints lots of stuff if true, prints
only failures if false; by default, it's true iff "-v" is in sys.argv.
Optional keyword arg "report" prints a summary at the end when true,
else prints nothing at the end. In verbose mode, the summary is
detailed, else very brief (in fact, empty if all tests passed).
Optional keyword arg "optionflags" or's together module constants,
and defaults to 0. This is new in 2.3. Possible values (see the
docs for details):
DONT_ACCEPT_TRUE_FOR_1
DONT_ACCEPT_BLANKLINE
NORMALIZE_WHITESPACE
ELLIPSIS
SKIP
IGNORE_EXCEPTION_DETAIL
REPORT_UDIFF
REPORT_CDIFF
REPORT_NDIFF
REPORT_ONLY_FIRST_FAILURE
Optional keyword arg "raise_on_error" raises an exception on the
first unexpected exception or failure. This allows failures to be
post-mortem debugged.
Advanced tomfoolery: testmod runs methods of a local instance of
class doctest.Tester, then merges the results into (or creates)
global Tester instance doctest.master. Methods of doctest.master
can be called directly too, if you want to do something unusual.
Passing report=0 to testmod is especially useful then, to delay
displaying a summary. Invoke doctest.master.summarize(verbose)
when you're done fiddling.
Nr� z testmod: module required; %r)r� �r� r �r1 r� )r> r? r/ r7 r8 rB r6 r r r rw rR rT �masterrV r% r r ) r� r+ r1 r� �reportr r� �raise_on_errorr� �finder�runnerr r, r, r- r H s$ E
c C s� |r|st d��t| ||| p d�\} } |dkr:tj�| �}|dkrHi }n|�� }|dk rb|�|� d|krrd|d< | r�t||d�}
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|
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Test examples in the given file. Return (#failures, #tests).
Optional keyword arg "module_relative" specifies how filenames
should be interpreted:
- If "module_relative" is True (the default), then "filename"
specifies a module-relative path. By default, this path is
relative to the calling module's directory; but if the
"package" argument is specified, then it is relative to that
package. To ensure os-independence, "filename" should use
"/" characters to separate path segments, and should not
be an absolute path (i.e., it may not begin with "/").
- If "module_relative" is False, then "filename" specifies an
os-specific path. The path may be absolute or relative (to
the current working directory).
Optional keyword arg "name" gives the name of the test; by default
use the file's basename.
Optional keyword argument "package" is a Python package or the
name of a Python package whose directory should be used as the
base directory for a module relative filename. If no package is
specified, then the calling module's directory is used as the base
directory for module relative filenames. It is an error to
specify "package" if "module_relative" is False.
Optional keyword arg "globs" gives a dict to be used as the globals
when executing examples; by default, use {}. A copy of this dict
is actually used for each docstring, so that each docstring's
examples start with a clean slate.
Optional keyword arg "extraglobs" gives a dictionary that should be
merged into the globals that are used to execute examples. By
default, no extra globals are used.
Optional keyword arg "verbose" prints lots of stuff if true, prints
only failures if false; by default, it's true iff "-v" is in sys.argv.
Optional keyword arg "report" prints a summary at the end when true,
else prints nothing at the end. In verbose mode, the summary is
detailed, else very brief (in fact, empty if all tests passed).
Optional keyword arg "optionflags" or's together module constants,
and defaults to 0. Possible values (see the docs for details):
DONT_ACCEPT_TRUE_FOR_1
DONT_ACCEPT_BLANKLINE
NORMALIZE_WHITESPACE
ELLIPSIS
SKIP
IGNORE_EXCEPTION_DETAIL
REPORT_UDIFF
REPORT_CDIFF
REPORT_NDIFF
REPORT_ONLY_FIRST_FAILURE
Optional keyword arg "raise_on_error" raises an exception on the
first unexpected exception or failure. This allows failures to be
post-mortem debugged.
Optional keyword arg "parser" specifies a DocTestParser (or
subclass) that should be used to extract tests from the files.
Optional keyword arg "encoding" specifies an encoding that should
be used to convert the file to unicode.
Advanced tomfoolery: testmod runs methods of a local instance of
class doctest.Tester, then merges the results into (or creates)
global Tester instance doctest.master. Methods of doctest.master
can be called directly too, if you want to do something unusual.
Passing report=0 to testmod is especially useful then, to delay
displaying a summary. Invoke doctest.master.summarize(verbose)
when you're done fiddling.
�8Package may only be specified for module-relative paths.rA Nr6 r� rd r" )r� rX r� r� �basenamer� r� r r r� rR rT rf rV r% r r )rT rV r+ rU r1 r� rg r r� rh r� rN �textrj r r, r, r- r � s2 R�
�NoNamec C s@ t |dd�}t||d�}|j| ||d�D ]}|j||d� q(dS )ar
Test examples in the given object's docstring (`f`), using `globs`
as globals. Optional argument `name` is used in failure messages.
If the optional argument `verbose` is true, then generate output
even if there are no failures.
`compileflags` gives the set of flags that should be used by the
Python compiler when running the examples. If not specified, then
it will default to the set of future-import flags that apply to
`globs`.
Optional keyword arg `optionflags` specifies options for the
testing and output. See the documentation for `testmod` for more
information.
F)r� r� rd )r1 )r2 N)r r rw rR ) rW r1 r� r+ r2 r ri rj r r, r, r- r + s c C s" | t @ | krtd| ��t}| a|S )a? Sets the unittest option flags.
The old flag is returned so that a runner could restore the old
value if it wished to:
>>> import doctest
>>> old = doctest._unittest_reportflags
>>> doctest.set_unittest_reportflags(REPORT_NDIFF |
... REPORT_ONLY_FIRST_FAILURE) == old
True
>>> doctest._unittest_reportflags == (REPORT_NDIFF |
... REPORT_ONLY_FIRST_FAILURE)
True
Only reporting flags can be set:
>>> doctest.set_unittest_reportflags(ELLIPSIS)
Traceback (most recent call last):
...
ValueError: ('Only reporting flags allowed', 8)
>>> doctest.set_unittest_reportflags(old) == (REPORT_NDIFF |
... REPORT_ONLY_FIRST_FAILURE)
True
z Only reporting flags allowed)r
r� �_unittest_reportflags)r2 �oldr, r, r- r H s
c @ sl e Zd Zddd�Zdd� Zdd� Zd d
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d� Zdd� Z dd� Z
dd� Z dd� Z e
jZdd� ZdS )� DocTestCaser" Nc C s. t j�| � || _|| _|| _|| _|| _d S rl )�unittest�TestCaser� �_dt_optionflags� _dt_checker�_dt_test� _dt_setUp� _dt_tearDown)rj r r �setUp�tearDownr r, r, r- r� n s zDocTestCase.__init__c C s | j }| jd k r| �|� d S rl )rv rw �rj r r, r, r- ry x s
zDocTestCase.setUpc C s( | j }| jd k r| �|� |j�� d S rl )rv rx r1 rM r{ r, r, r- rz ~ s
zDocTestCase.tearDownc C s~ | j }tj}t� }| j}|t@ s(|tO }t|| jdd�}z d|_ |j
||j dd�\}}W 5 |t_X |rz| � | �
|�� ���d S )NF�r r r� zF----------------------------------------------------------------------)r� rQ )rv r> r� r# rt r
ro r ru r+ rR rD ZfailureException�format_failurerc )rj r rp �newr rj r r r, r, r- �runTest� s( � �zDocTestCase.runTestc C sP | j }|jd krd}n
d|j }d�|j�d�dd � �}d|j|j|||f S )Nzunknown line numberz%sr� rr z:Failed doctest test for %s
File "%s", line %s, in %s
%s)rv r� r� r+ rt rT )rj �errr r� Zlnamer, r, r- r} � s
�zDocTestCase.format_failurec C s6 | � � t| j| jdd�}|j| jdd� | �� dS )a� Run the test case without results and without catching exceptions
The unit test framework includes a debug method on test cases
and test suites to support post-mortem debugging. The test code
is run in such a way that errors are not caught. This way a
caller can catch the errors and initiate post-mortem debugging.
The DocTestCase provides a debug method that raises
UnexpectedException errors if there is an unexpected
exception:
>>> test = DocTestParser().get_doctest('>>> raise KeyError\n42',
... {}, 'foo', 'foo.py', 0)
>>> case = DocTestCase(test)
>>> try:
... case.debug()
... except UnexpectedException as f:
... failure = f
The UnexpectedException contains the test, the example, and
the original exception:
>>> failure.test is test
True
>>> failure.example.want
'42\n'
>>> exc_info = failure.exc_info
>>> raise exc_info[1] # Already has the traceback
Traceback (most recent call last):
...
KeyError
If the output doesn't match, then a DocTestFailure is raised:
>>> test = DocTestParser().get_doctest('''
... >>> x = 1
... >>> x
... 2
... ''', {}, 'foo', 'foo.py', 0)
>>> case = DocTestCase(test)
>>> try:
... case.debug()
... except DocTestFailure as f:
... failure = f
DocTestFailure objects provide access to the test:
>>> failure.test is test
True
As well as to the example:
>>> failure.example.want
'2\n'
and the actual output:
>>> failure.got
'1\n'
Fr| )rQ N)ry r rt ru rR rv rz )rj rj r, r, r- r! � s B �zDocTestCase.debugc C s | j jS rl �rv r+ r� r, r, r- r� � s zDocTestCase.idc C sP t | �t |�k rtS | j|jkoN| j|jkoN| j|jkoN| j|jkoN| j|jkS rl )r� r� rv rt rw rx ru r� r, r, r- r� � s
�
�
�
�zDocTestCase.__eq__c C s t | j| j| j| jf�S rl )r� rt rw rx ru r� r, r, r- r� � s �zDocTestCase.__hash__c C s, | j j�d�}d|d d�|d d� �f S )Nr� z%s (%s)rr )rv r+ rt r� )rj r+ r, r, r- r� s zDocTestCase.__repr__c C s d| j j S )Nz Doctest: r� r� r, r, r- �shortDescription s z DocTestCase.shortDescription)r" NNN)r6 rp rq r� ry rz r r} r! r� r� r� r� r ra r� r, r, r, r- rq l s �
H
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�SkipDocTestCasec C s || _ t�| d � d S rl )rC rq r� )rj rC r, r, r- r�
s zSkipDocTestCase.__init__c C s | � d� d S )Nz-DocTestSuite will not work with -O2 and above)ZskipTestr� r, r, r- ry s zSkipDocTestCase.setUpc C s d S rl r, r� r, r, r- � test_skip s zSkipDocTestCase.test_skipc C s d| j j S )NzSkipping tests from %s)rC r6 r� r, r, r- r� s z SkipDocTestCase.shortDescriptionN)r6 rp rq r� ry r� r� ra r, r, r, r- r� s
r� c @ s e Zd Zdd� ZdS )�
_DocTestSuitec C s d S rl r, )rj �indexr, r, r- �_removeTestAtIndex s z _DocTestSuite._removeTestAtIndexN)r6 rp rq r� r, r, r, r- r� s r� c K s� |dkrt � }t| �} |j| ||d�}|sNtjjdkrNt� }|�t| �� |S |� � t� }|D ]T}t
|j �dkrtq`|j s�| j
}|dd� dkr�|dd� }||_ |�t|f|�� q`|S )a
Convert doctest tests for a module to a unittest test suite.
This converts each documentation string in a module that
contains doctest tests to a unittest test case. If any of the
tests in a doc string fail, then the test case fails. An exception
is raised showing the name of the file containing the test and a
(sometimes approximate) line number.
The `module` argument provides the module to be tested. The argument
can be either a module or a module name.
If no argument is given, the calling module is used.
A number of options may be provided as keyword arguments:
setUp
A set-up function. This is called before running the
tests in each file. The setUp function will be passed a DocTest
object. The setUp function can access the test globals as the
globs attribute of the test passed.
tearDown
A tear-down function. This is called after running the
tests in each file. The tearDown function will be passed a DocTest
object. The tearDown function can access the test globals as the
globs attribute of the test passed.
globs
A dictionary containing initial global variables for the tests.
optionflags
A set of doctest option flags expressed as an integer.
Nre r4 r" r r rr )r rD rw r> r2 �optimizer� �addTestr� r� r) r� rT r� rq ) rC r1 r� Z test_finderr� r� �suiter rT r, r, r- r # s( % c @ s$ e Zd Zdd� Zdd� Zdd� ZdS )� DocFileCasec C s d� | jj�d��S )NrO r� )r� rv r+ rt r� r, r, r- r� e s zDocFileCase.idc C s | j jS rl )rv rT r� r, r, r- r� h s zDocFileCase.__repr__c C s d| j j| j j|f S )Nz2Failed doctest test for %s
File "%s", line 0
%s)rv r+ rT )rj r� r, r, r- r} k s �zDocFileCase.format_failureN)r6 rp rq r� r� r} r, r, r, r- r� c s r� c
K sv |d kri }n|� � }|r&|s&td��t| |||p4d�\}} d|krL| |d< tj�| �}|�|||| d�} t| f|�S )Nrk rA r� r" )r� r� rX r� r� rl r� r� )
r� rV rU r1 r� rN r� �docr+ r r, r, r- � DocFileTestp s � r� c O sD t � }|�dd�r$t|�d��|d< | D ]}|�t|f|�� q(|S )a� A unittest suite for one or more doctest files.
The path to each doctest file is given as a string; the
interpretation of that string depends on the keyword argument
"module_relative".
A number of options may be provided as keyword arguments:
module_relative
If "module_relative" is True, then the given file paths are
interpreted as os-independent module-relative paths. By
default, these paths are relative to the calling module's
directory; but if the "package" argument is specified, then
they are relative to that package. To ensure os-independence,
"filename" should use "/" characters to separate path
segments, and may not be an absolute path (i.e., it may not
begin with "/").
If "module_relative" is False, then the given file paths are
interpreted as os-specific paths. These paths may be absolute
or relative (to the current working directory).
package
A Python package or the name of a Python package whose directory
should be used as the base directory for module relative paths.
If "package" is not specified, then the calling module's
directory is used as the base directory for module relative
filenames. It is an error to specify "package" if
"module_relative" is False.
setUp
A set-up function. This is called before running the
tests in each file. The setUp function will be passed a DocTest
object. The setUp function can access the test globals as the
globs attribute of the test passed.
tearDown
A tear-down function. This is called after running the
tests in each file. The tearDown function will be passed a DocTest
object. The tearDown function can access the test globals as the
globs attribute of the test passed.
globs
A dictionary containing initial global variables for the tests.
optionflags
A set of doctest option flags expressed as an integer.
parser
A DocTestParser (or subclass) that should be used to extract
tests from the files.
encoding
An encoding that will be used to convert the files to unicode.
rV TrU )r� r/ rD r� r� )�paths�kwr� r� r, r, r- r � s 8 c C s� g }t � �| �D ]x}t|t�rh|�|jdd� � |j}|r�|�d� |dd� |�d�dd� D �7 }q|dd� |�d�dd� D �7 }q|r�|d dkr�|�� q�|r�|d dkr�|�d � q�d� |�d S )
aw Extract script from text with examples.
Converts text with examples to a Python script. Example input is
converted to regular code. Example output and all other words
are converted to comments:
>>> text = '''
... Here are examples of simple math.
...
... Python has super accurate integer addition
...
... >>> 2 + 2
... 5
...
... And very friendly error messages:
...
... >>> 1/0
... To Infinity
... And
... Beyond
...
... You can use logic if you want:
...
... >>> if 0:
... ... blah
... ... blah
... ...
...
... Ho hum
... '''
>>> print(script_from_examples(text))
# Here are examples of simple math.
#
# Python has super accurate integer addition
#
2 + 2
# Expected:
## 5
#
# And very friendly error messages:
#
1/0
# Expected:
## To Infinity
## And
## Beyond
#
# You can use logic if you want:
#
if 0:
blah
blah
#
# Ho hum
<BLANKLINE>
Nrr z # Expected:c S s g | ] }d | �qS )z## r, r� r, r, r- r�
s z(script_from_examples.<locals>.<listcomp>rF c S s g | ] }t |��qS r, )r� r� r, r, r- r�
s �r~ r" )
r r� r9 r r� r� rx rt �popr� )r] r� Zpiecerx r, r, r- r � s :
"�
c sJ t | �} t� �| �}� fdd�|D �}|s4t� d��|d }t|j�}|S )a Extract the test sources from a doctest docstring as a script.
Provide the module (or dotted name of the module) containing the
test to be debugged and the name (within the module) of the object
with the doc string with tests to be debugged.
c s g | ]}|j � kr|�qS r, r* )r� r7 r* r, r- r� .
s
z testsource.<locals>.<listcomp>znot found in testsr" )rD r rw r� r r� )rC r+ r� r �testsrcr, r* r- r %
s
c C s t | �}t|||� dS )z4Debug a single doctest docstring, in argument `src`'N)r � debug_script)�src�pmr1 r� r, r, r- r 5
s c C s� ddl }|r|�� }ni }|rvzt| ||� W q� tt�� d � |jdd�}|�� |�dt�� d � Y q�X n|jdd�� d| ||� dS )z7Debug a test script. `src` is the script, as a string.r" Nr& T)r� r4 zexec(%r))
r� r� r- r r> rd r� rH Z interactionrR )r� r� r1 r� �pr, r, r- r� :
s
r� c C s$ t | �} t| |�}t||| j� dS )z�Debug a single doctest docstring.
Provide the module (or dotted name of the module) containing the
test to be debugged and the name (within the module) of the object
with the docstring with tests to be debugged.
N)rD r r� r� )rC r+ r� r� r, r, r- r! N
s
c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) �
_TestClassz�
A pointless class, for sanity-checking of docstring testing.
Methods:
square()
get()
>>> _TestClass(13).get() + _TestClass(-12).get()
1
>>> hex(_TestClass(13).square().get())
'0xa9'
c C s
|| _ dS )z�val -> _TestClass object with associated value val.
>>> t = _TestClass(123)
>>> print(t.get())
123
N�r
)rj r
r, r, r- r� j
s z_TestClass.__init__c C s | j d | _ | S )zosquare() -> square TestClass's associated value
>>> _TestClass(13).square().get()
169
r4 r� r� r, r, r- �squaret
s z_TestClass.squarec C s | j S )z~get() -> return TestClass's associated value.
>>> x = _TestClass(-42)
>>> print(x.get())
-42
r� r� r, r, r- r/ ~
s z_TestClass.getN)r6 rp rq r� r� r� r/ r, r, r, r- r� \
s
r� z�
Example of a string object, searched as-is.
>>> x = 1; y = 2
>>> x + y, x * y
(3, 2)
a�
In 2.2, boolean expressions displayed
0 or 1. By default, we still accept
them. This can be disabled by passing
DONT_ACCEPT_TRUE_FOR_1 to the new
optionflags argument.
>>> 4 == 4
1
>>> 4 == 4
True
>>> 4 > 4
0
>>> 4 > 4
False
z�
Blank lines can be marked with <BLANKLINE>:
>>> print('foo\n\nbar\n')
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Thread-local objects support the management of thread-local data.
If you have data that you want to be local to a thread, simply create
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>>> mydata = local()
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42
You can also access the local-object's dictionary:
>>> mydata.__dict__
{'number': 42}
>>> mydata.__dict__.setdefault('widgets', [])
[]
>>> mydata.widgets
[]
What's important about thread-local objects is that their data are
local to a thread. If we access the data in a different thread:
>>> log = []
>>> def f():
... items = sorted(mydata.__dict__.items())
... log.append(items)
... mydata.number = 11
... log.append(mydata.number)
>>> import threading
>>> thread = threading.Thread(target=f)
>>> thread.start()
>>> thread.join()
>>> log
[[], 11]
we get different data. Furthermore, changes made in the other thread
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>>> mydata.number
42
Of course, values you get from a local object, including a __dict__
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came from.
You can create custom local objects by subclassing the local class:
>>> class MyLocal(local):
... number = 2
... def __init__(self, /, **kw):
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... def squared(self):
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This can be useful to support default values, methods and
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Now if we create a local object:
>>> mydata = MyLocal(color='red')
Now we have a default number:
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an initial color:
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>>> del mydata.color
And a method that operates on the data:
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4
As before, we can access the data in a separate thread:
>>> log = []
>>> thread = threading.Thread(target=f)
>>> thread.start()
>>> thread.join()
>>> log
[[('color', 'red')], 11]
without affecting this thread's data:
>>> mydata.number
2
>>> mydata.color
Traceback (most recent call last):
...
AttributeError: 'MyLocal' object has no attribute 'color'
Note that subclasses can define slots, but they are not thread
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>>> class MyLocal(local):
... __slots__ = 'number'
>>> mydata = MyLocal()
>>> mydata.number = 42
>>> mydata.color = 'red'
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11
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uuencode). Some of the conversion steps may require that their input
is a disk file, others may be able to read standard input; similar for
their output. The input to the entire conversion may also be read
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The module lets you construct a pipeline template by sticking one or
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Directions:
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t = Template()
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t.append(command, kind)
where kind is a string of two characters: the first is '-' if the
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This module is an optparse-inspired command-line parsing library that:
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- supports parsers that dispatch to sub-parsers
The following is a simple usage example that sums integers from the
command-line and writes the result to a file::
parser = argparse.ArgumentParser(
description='sum the integers at the command line')
parser.add_argument(
'integers', metavar='int', nargs='+', type=int,
help='an integer to be summed')
parser.add_argument(
'--log', default=sys.stdout, type=argparse.FileType('w'),
help='the file where the sum should be written')
args = parser.parse_args()
args.log.write('%s' % sum(args.integers))
args.log.close()
The module contains the following public classes:
- ArgumentParser -- The main entry point for command-line parsing. As the
example above shows, the add_argument() method is used to populate
the parser with actions for optional and positional arguments. Then
the parse_args() method is invoked to convert the args at the
command-line into an object with attributes.
- ArgumentError -- The exception raised by ArgumentParser objects when
there are errors with the parser's actions. Errors raised while
parsing the command-line are caught by ArgumentParser and emitted
as command-line messages.
- FileType -- A factory for defining types of files to be created. As the
example above shows, instances of FileType are typically passed as
the type= argument of add_argument() calls.
- Action -- The base class for parser actions. Typically actions are
selected by passing strings like 'store_true' or 'append_const' to
the action= argument of add_argument(). However, for greater
customization of ArgumentParser actions, subclasses of Action may
be defined and passed as the action= argument.
- HelpFormatter, RawDescriptionHelpFormatter, RawTextHelpFormatter,
ArgumentDefaultsHelpFormatter -- Formatter classes which
may be passed as the formatter_class= argument to the
ArgumentParser constructor. HelpFormatter is the default,
RawDescriptionHelpFormatter and RawTextHelpFormatter tell the parser
not to change the formatting for help text, and
ArgumentDefaultsHelpFormatter adds information about argument defaults
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This is an implementation of decimal floating point arithmetic based on
the General Decimal Arithmetic Specification:
http://speleotrove.com/decimal/decarith.html
and IEEE standard 854-1987:
http://en.wikipedia.org/wiki/IEEE_854-1987
Decimal floating point has finite precision with arbitrarily large bounds.
The purpose of this module is to support arithmetic using familiar
"schoolhouse" rules and to avoid some of the tricky representation
issues associated with binary floating point. The package is especially
useful for financial applications or for contexts where users have
expectations that are at odds with binary floating point (for instance,
in binary floating point, 1.00 % 0.1 gives 0.09999999999999995 instead
of 0.0; Decimal('1.00') % Decimal('0.1') returns the expected
Decimal('0.00')).
Here are some examples of using the decimal module:
>>> from decimal import *
>>> setcontext(ExtendedContext)
>>> Decimal(0)
Decimal('0')
>>> Decimal('1')
Decimal('1')
>>> Decimal('-.0123')
Decimal('-0.0123')
>>> Decimal(123456)
Decimal('123456')
>>> Decimal('123.45e12345678')
Decimal('1.2345E+12345680')
>>> Decimal('1.33') + Decimal('1.27')
Decimal('2.60')
>>> Decimal('12.34') + Decimal('3.87') - Decimal('18.41')
Decimal('-2.20')
>>> dig = Decimal(1)
>>> print(dig / Decimal(3))
0.333333333
>>> getcontext().prec = 18
>>> print(dig / Decimal(3))
0.333333333333333333
>>> print(dig.sqrt())
1
>>> print(Decimal(3).sqrt())
1.73205080756887729
>>> print(Decimal(3) ** 123)
4.85192780976896427E+58
>>> inf = Decimal(1) / Decimal(0)
>>> print(inf)
Infinity
>>> neginf = Decimal(-1) / Decimal(0)
>>> print(neginf)
-Infinity
>>> print(neginf + inf)
NaN
>>> print(neginf * inf)
-Infinity
>>> print(dig / 0)
Infinity
>>> getcontext().traps[DivisionByZero] = 1
>>> print(dig / 0)
Traceback (most recent call last):
...
...
...
decimal.DivisionByZero: x / 0
>>> c = Context()
>>> c.traps[InvalidOperation] = 0
>>> print(c.flags[InvalidOperation])
0
>>> c.divide(Decimal(0), Decimal(0))
Decimal('NaN')
>>> c.traps[InvalidOperation] = 1
>>> print(c.flags[InvalidOperation])
1
>>> c.flags[InvalidOperation] = 0
>>> print(c.flags[InvalidOperation])
0
>>> print(c.divide(Decimal(0), Decimal(0)))
Traceback (most recent call last):
...
...
...
decimal.InvalidOperation: 0 / 0
>>> print(c.flags[InvalidOperation])
1
>>> c.flags[InvalidOperation] = 0
>>> c.traps[InvalidOperation] = 0
>>> print(c.divide(Decimal(0), Decimal(0)))
NaN
>>> print(c.flags[InvalidOperation])
1
>>>
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getcontext� localcontext�MAX_PREC�MAX_EMAX�MIN_EMIN� MIN_ETINY� HAVE_THREADS�HAVE_CONTEXTVARZdecimalz1.70z2.4.2� N)�
namedtuplezsign digits exponentc G s | S �N� )�argsr) r) �"/usr/lib64/python3.8/_pydecimal.py�<lambda>� � r, Tl ���� l ��N�Zol������N�Zoi@�Ti���� c @ s e Zd ZdZdd� ZdS )r a1 Base exception class.
Used exceptions derive from this.
If an exception derives from another exception besides this (such as
Underflow (Inexact, Rounded, Subnormal) that indicates that it is only
called if the others are present. This isn't actually used for
anything, though.
handle -- Called when context._raise_error is called and the
trap_enabler is not set. First argument is self, second is the
context. More arguments can be given, those being after
the explanation in _raise_error (For example,
context._raise_error(NewError, '(-x)!', self._sign) would
call NewError().handle(context, self._sign).)
To define a new exception, it should be sufficient to have it derive
from DecimalException.
c G s d S r( r) ��self�contextr* r) r) r+ �handle� s zDecimalException.handleN��__name__�
__module__� __qualname__�__doc__r2 r) r) r) r+ r � s c @ s e Zd ZdZdS )r a) Exponent of a 0 changed to fit bounds.
This occurs and signals clamped if the exponent of a result has been
altered in order to fit the constraints of a specific concrete
representation. This may occur when the exponent of a zero result would
be outside the bounds of a representation, or when a large normal
number would have an encoded exponent that cannot be represented. In
this latter case, the exponent is reduced to fit and the corresponding
number of zero digits are appended to the coefficient ("fold-down").
N�r4 r5 r6 r7 r) r) r) r+ r � s c @ s e Zd ZdZdd� ZdS )r a0 An invalid operation was performed.
Various bad things cause this:
Something creates a signaling NaN
-INF + INF
0 * (+-)INF
(+-)INF / (+-)INF
x % 0
(+-)INF % x
x._rescale( non-integer )
sqrt(-x) , x > 0
0 ** 0
x ** (non-integer)
x ** (+-)INF
An operand is invalid
The result of the operation after these is a quiet positive NaN,
except when the cause is a signaling NaN, in which case the result is
also a quiet NaN, but with the original sign, and an optional
diagnostic information.
c G s, |r(t |d j|d jdd�}|�|�S tS )Nr& �nT)�_dec_from_triple�_sign�_int�_fix_nan�_NaN)r0 r1 r* �ansr) r) r+ r2 � s
zInvalidOperation.handleNr3 r) r) r) r+ r � s c @ s e Zd ZdZdd� ZdS )r z�Trying to convert badly formed string.
This occurs and signals invalid-operation if a string is being
converted to a number and it does not conform to the numeric string
syntax. The result is [0,qNaN].
c G s t S r( �r> r/ r) r) r+ r2 s zConversionSyntax.handleNr3 r) r) r) r+ r s c @ s e Zd ZdZdd� ZdS )r
a� Division by 0.
This occurs and signals division-by-zero if division of a finite number
by zero was attempted (during a divide-integer or divide operation, or a
power operation with negative right-hand operand), and the dividend was
not zero.
The result of the operation is [sign,inf], where sign is the exclusive
or of the signs of the operands for divide, or is 1 for an odd power of
-0, for power.
c G s t | S r( )�_SignedInfinity�r0 r1 �signr* r) r) r+ r2 s zDivisionByZero.handleNr3 r) r) r) r+ r
s c @ s e Zd ZdZdd� ZdS )r z�Cannot perform the division adequately.
This occurs and signals invalid-operation if the integer result of a
divide-integer or remainder operation had too many digits (would be
longer than precision). The result is [0,qNaN].
c G s t S r( r@ r/ r) r) r+ r2 " s zDivisionImpossible.handleNr3 r) r) r) r+ r s c @ s e Zd ZdZdd� ZdS )r z�Undefined result of division.
This occurs and signals invalid-operation if division by zero was
attempted (during a divide-integer, divide, or remainder operation), and
the dividend is also zero. The result is [0,qNaN].
c G s t S r( r@ r/ r) r) r+ r2 - s zDivisionUndefined.handleNr3 r) r) r) r+ r % s c @ s e Zd ZdZdS )r a� Had to round, losing information.
This occurs and signals inexact whenever the result of an operation is
not exact (that is, it needed to be rounded and any discarded digits
were non-zero), or if an overflow or underflow condition occurs. The
result in all cases is unchanged.
The inexact signal may be tested (or trapped) to determine if a given
operation (or sequence of operations) was inexact.
Nr8 r) r) r) r+ r 0 s c @ s e Zd ZdZdd� ZdS )r a� Invalid context. Unknown rounding, for example.
This occurs and signals invalid-operation if an invalid context was
detected during an operation. This can occur if contexts are not checked
on creation and either the precision exceeds the capability of the
underlying concrete representation or an unknown or unsupported rounding
was specified. These aspects of the context need only be checked when
the values are required to be used. The result is [0,qNaN].
c G s t S r( r@ r/ r) r) r+ r2 G s zInvalidContext.handleNr3 r) r) r) r+ r < s
c @ s e Zd ZdZdS )r a� Number got rounded (not necessarily changed during rounding).
This occurs and signals rounded whenever the result of an operation is
rounded (that is, some zero or non-zero digits were discarded from the
coefficient), or if an overflow or underflow condition occurs. The
result in all cases is unchanged.
The rounded signal may be tested (or trapped) to determine if a given
operation (or sequence of operations) caused a loss of precision.
Nr8 r) r) r) r+ r J s c @ s e Zd ZdZdS )r
a� Exponent < Emin before rounding.
This occurs and signals subnormal whenever the result of a conversion or
operation is subnormal (that is, its adjusted exponent is less than
Emin, before any rounding). The result in all cases is unchanged.
The subnormal signal may be tested (or trapped) to determine if a given
or operation (or sequence of operations) yielded a subnormal result.
Nr8 r) r) r) r+ r
V s c @ s e Zd ZdZdd� ZdS )r a Numerical overflow.
This occurs and signals overflow if the adjusted exponent of a result
(from a conversion or from an operation that is not an attempt to divide
by zero), after rounding, would be greater than the largest value that
can be handled by the implementation (the value Emax).
The result depends on the rounding mode:
For round-half-up and round-half-even (and for round-half-down and
round-up, if implemented), the result of the operation is [sign,inf],
where sign is the sign of the intermediate result. For round-down, the
result is the largest finite number that can be represented in the
current precision, with the sign of the intermediate result. For
round-ceiling, the result is the same as for round-down if the sign of
the intermediate result is 1, or is [0,inf] otherwise. For round-floor,
the result is the same as for round-down if the sign of the intermediate
result is 0, or is [1,inf] otherwise. In all cases, Inexact and Rounded
will also be raised.
c G s� |j ttttfkrt| S |dkrR|j tkr4t| S t|d|j |j |j d �S |dkr�|j t
krlt| S t|d|j |j |j d �S d S )Nr& �9r. ) �roundingr r r r rA r r: �prec�Emaxr rB r) r) r+ r2 w s" �
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�zOverflow.handleNr3 r) r) r) r+ r a s c @ s e Zd ZdZdS )r ax Numerical underflow with result rounded to 0.
This occurs and signals underflow if a result is inexact and the
adjusted exponent of the result would be smaller (more negative) than
the smallest value that can be handled by the implementation (the value
Emin). That is, the result is both inexact and subnormal.
The result after an underflow will be a subnormal number rounded, if
necessary, so that its exponent is not less than Etiny. This may result
in 0 with the sign of the intermediate result and an exponent of Etiny.
In all cases, Inexact, Rounded, and Subnormal will also be raised.
Nr8 r) r) r) r+ r � s c @ s e Zd ZdZdS )r a� Enable stricter semantics for mixing floats and Decimals.
If the signal is not trapped (default), mixing floats and Decimals is
permitted in the Decimal() constructor, context.create_decimal() and
all comparison operators. Both conversion and comparisons are exact.
Any occurrence of a mixed operation is silently recorded by setting
FloatOperation in the context flags. Explicit conversions with
Decimal.from_float() or context.create_decimal_from_float() do not
set the flag.
Otherwise (the signal is trapped), only equality comparisons and explicit
conversions are silent. All other mixed operations raise FloatOperation.
Nr8 r) r) r) r+ r � s Zdecimal_contextc C s8 z
t �� W S tk
r2 t� } t �| � | Y S X dS )z�Returns this thread's context.
If this thread does not yet have a context, returns
a new context and sets this thread's context.
New contexts are copies of DefaultContext.
N)�_current_context_var�get� LookupErrorr �set�r1 r) r) r+ r � s
c C s, | t ttfkr | �� } | �� t�| � dS )z%Set this thread's context to context.N)r r r �copy� clear_flagsrH rK rL r) r) r+ r � s c C s | dkrt � } t| �S )ab Return a context manager for a copy of the supplied context
Uses a copy of the current context if no context is specified
The returned context manager creates a local decimal context
in a with statement:
def sin(x):
with localcontext() as ctx:
ctx.prec += 2
# Rest of sin calculation algorithm
# uses a precision 2 greater than normal
return +s # Convert result to normal precision
def sin(x):
with localcontext(ExtendedContext):
# Rest of sin calculation algorithm
# uses the Extended Context from the
# General Decimal Arithmetic Specification
return +s # Convert result to normal context
>>> setcontext(DefaultContext)
>>> print(getcontext().prec)
28
>>> with localcontext():
... ctx = getcontext()
... ctx.prec += 2
... print(ctx.prec)
...
30
>>> with localcontext(ExtendedContext):
... print(getcontext().prec)
...
9
>>> print(getcontext().prec)
28
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|_
|j|_|S t d | ��dS ) a� Create a decimal point instance.
>>> Decimal('3.14') # string input
Decimal('3.14')
>>> Decimal((0, (3, 1, 4), -2)) # tuple (sign, digit_tuple, exponent)
Decimal('3.14')
>>> Decimal(314) # int
Decimal('314')
>>> Decimal(Decimal(314)) # another decimal instance
Decimal('314')
>>> Decimal(' 3.14 \n') # leading and trailing whitespace okay
Decimal('3.14')
�_� Nz Invalid literal for Decimal: %rrC �-r. r& �intZfrac�exprR F�diag�signal�Nr9 �FT� ztInvalid tuple size in creation of Decimal from list or tuple. The list or tuple should have exactly three elements.�r& r. z|Invalid sign. The first value in the tuple should be an integer; either 0 for a positive number or 1 for a negative number.� � zTThe second value in the tuple must be composed of integers in the range 0 through 9.�r9 rZ zUThe third value in the tuple must be an integer, or one of the strings 'F', 'n', 'N'.�;strict semantics for mixing floats and Decimals are enabledz Cannot convert %r to Decimal)!�object�__new__�
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zDecimal.__new__c C s� t |t�r,|dkrdnd}d}tt|��}nzt |t�r�t�|�sJt�|�rV| t|��S t� d|�dkrld}nd}t|��
� \}}|� � d }t|d| �}nt d��t
||| �}| tkr�|S | |�S dS )a. Converts a float to a decimal number, exactly.
Note that Decimal.from_float(0.1) is not the same as Decimal('0.1').
Since 0.1 is not exactly representable in binary floating point, the
value is stored as the nearest representable value which is
0x1.999999999999ap-4. The exact equivalent of the value in decimal
is 0.1000000000000000055511151231257827021181583404541015625.
>>> Decimal.from_float(0.1)
Decimal('0.1000000000000000055511151231257827021181583404541015625')
>>> Decimal.from_float(float('nan'))
Decimal('NaN')
>>> Decimal.from_float(float('inf'))
Decimal('Infinity')
>>> Decimal.from_float(-float('inf'))
Decimal('-Infinity')
>>> Decimal.from_float(-0.0)
Decimal('-0')
r& r. g �?� z argument must be int or float.N)rd rV re rm ru �_mathZisinfZisnan�reprZcopysign�as_integer_ratio�
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zDecimal.from_floatc C s( | j r$| j}|dkrdS |dkr$dS dS )zrReturns whether the number is not actually one.
0 if a number
1 if NaN
2 if sNaN
r9 r. rZ r^ r& )rQ rP )r0 rW r) r) r+ �_isnan� s zDecimal._isnanc C s | j dkr| jrdS dS dS )zyReturns whether the number is infinite
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r[ ���r. r& )rP r; �r0 r) r) r+ � _isinfinity� s
zDecimal._isinfinityc C s| | � � }|dkrd}n|� � }|s&|rx|dkr4t� }|dkrJ|�td| �S |dkr`|�td|�S |rn| �|�S |�|�S dS )z�Returns whether the number is not actually one.
if self, other are sNaN, signal
if self, other are NaN return nan
return 0
Done before operations.
NFr^ �sNaNr& )r� r ri r r= )r0 �otherr1 � self_is_nan� other_is_nanr) r) r+ � _check_nans� s&
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zDecimal._check_nansc C sv |dkrt � }| js|jrr| �� r0|�td| �S |�� rF|�td|�S | �� r\|�td| �S |�� rr|�td|�S dS )aC Version of _check_nans used for the signaling comparisons
compare_signal, __le__, __lt__, __ge__, __gt__.
Signal InvalidOperation if either self or other is a (quiet
or signaling) NaN. Signaling NaNs take precedence over quiet
NaNs.
Return 0 if neither operand is a NaN.
Nzcomparison involving sNaNzcomparison involving NaNr& )r rQ �is_snanri r �is_qnan�r0 r� r1 r) r) r+ �_compare_check_nans s0 ����zDecimal._compare_check_nansc C s | j p| jdkS )zuReturn True if self is nonzero; otherwise return False.
NaNs and infinities are considered nonzero.
rR �rQ r< r� r) r) r+ �__bool__* s zDecimal.__bool__c C s | j s |j r8| �� }|�� }||kr(dS ||k r4dS dS | sP|sDdS d|j S |s^d| j S |j| jk rndS | j|jk r~dS | �� }|�� }||kr�| jd| j|j }|jd|j| j }||kr�dS ||k r�d| j S d| j S n ||k�rd| j S d| j S dS )z�Compare the two non-NaN decimal instances self and other.
Returns -1 if self < other, 0 if self == other and 1
if self > other. This routine is for internal use only.r& r� r. rR N)rQ r� r; �adjustedr< rP )r0 r� Zself_infZ other_inf�
self_adjustedZother_adjusted� self_paddedZ other_paddedr) r) r+ �_cmp1 s>
z Decimal._cmpc C s< t | |dd�\} }|tkr |S | �||�r.dS | �|�dkS )NT)� equality_opFr& )�_convert_for_comparison�NotImplementedr� r� r� r) r) r+ �__eq__q s zDecimal.__eq__c C s< t | |�\} }|tkr|S | �||�}|r.dS | �|�dk S �NFr& �r� r� r� r� �r0 r� r1 r? r) r) r+ �__lt__y s zDecimal.__lt__c C s< t | |�\} }|tkr|S | �||�}|r.dS | �|�dkS r� r� r� r) r) r+ �__le__� s zDecimal.__le__c C s< t | |�\} }|tkr|S | �||�}|r.dS | �|�dkS r� r� r� r) r) r+ �__gt__� s zDecimal.__gt__c C s< t | |�\} }|tkr|S | �||�}|r.dS | �|�dkS r� r� r� r) r) r+ �__ge__� s zDecimal.__ge__c C s> t |dd�}| js |r0|jr0| �||�}|r0|S t| �|��S )z�Compare self to other. Return a decimal value:
a or b is a NaN ==> Decimal('NaN')
a < b ==> Decimal('-1')
a == b ==> Decimal('0')
a > b ==> Decimal('1')
T��raiseit)�_convert_otherrQ r� r r� r� r) r) r+ �compare� s zDecimal.comparec C s� | j r4| �� rtd��n | �� r$tS | jr0t S tS | jdkrNtd| jt �}ntt
| j t �}t | j �| t }| dkr||n| }|dkr�dS |S )zx.__hash__() <==> hash(x)z"Cannot hash a signaling NaN value.r& �
r� ���)
rQ r� rw �is_nan� _PyHASH_NANr; � _PyHASH_INFrP �pow�_PyHASH_MODULUS�
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zDecimal.__hash__c C s t | jttt| j��| j�S )zeRepresents the number as a triple tuple.
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)r r; rp rt rV r< rP r� r) r) r+ �as_tuple� s zDecimal.as_tuplec C s� | j r | �� rtd��ntd��| s(dS t| j�}| jdkrR|d| j d }}nn| j }|dkr�|d dkr�|d }|d8 }qZ| j }t|| @ �� d |�}|r�||L }||8 }d| |> }| j r�| }||fS )a� Express a finite Decimal instance in the form n / d.
Returns a pair (n, d) of integers. When called on an infinity
or NaN, raises OverflowError or ValueError respectively.
>>> Decimal('3.14').as_integer_ratio()
(157, 50)
>>> Decimal('-123e5').as_integer_ratio()
(-12300000, 1)
>>> Decimal('0.00').as_integer_ratio()
(0, 1)
z#cannot convert NaN to integer ratioz(cannot convert Infinity to integer ratior] r& r� r. r~ )
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rT rU r[ ZInfinityr9 �NaNr� r& ���r. rR r\ �.N�e�Ez%+d)r; rQ rP r< rk r �capitals) r0 �engr1 rC �
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zDecimal.__str__c C s | j d|d�S )a, Convert to a string, using engineering notation if an exponent is needed.
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can leave up to 3 digits to the left of the decimal place and may
require the addition of either one or two trailing zeros.
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to_eng_string; s zDecimal.to_eng_stringc C sR | j r| j|d�}|r|S |dkr(t� }| s@|jtkr@| �� }n| �� }|�|�S )zRReturns a copy with the sign switched.
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rL N)rQ r� r rE r �copy_abs� copy_negate�_fix�r0 r1 r? r) r) r+ �__neg__D s
zDecimal.__neg__c C sR | j r| j|d�}|r|S |dkr(t� }| s@|jtkr@| �� }nt| �}|�|�S )zhReturns a copy, unless it is a sNaN.
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zDecimal.__pos__Tc C sJ |s | � � S | jr&| j|d�}|r&|S | jr:| j|d�}n | j|d�}|S )z�Returns the absolute value of self.
If the keyword argument 'round' is false, do not round. The
expression self.__abs__(round=False) is equivalent to
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>>> round(Decimal('123.456'))
123
>>> round(Decimal('-456.789'))
-457
>>> round(Decimal('-3.0'))
-3
>>> round(Decimal('2.5'))
2
>>> round(Decimal('3.5'))
4
>>> round(Decimal('Inf'))
Traceback (most recent call last):
...
OverflowError: cannot round an infinity
>>> round(Decimal('NaN'))
Traceback (most recent call last):
...
ValueError: cannot round a NaN
If a second argument n is supplied, self is rounded to n
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Decimal('123')
>>> round(Decimal('123.456'), 2)
Decimal('123.46')
>>> round(Decimal('123.456'), -2)
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>>> round(Decimal('-Infinity'), 37)
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Decimal('NaN123')
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Similar to self._rescale(exp._exp) but with error checking.
Tr� Nzquantize with one INFz)target exponent out of bounds in quantizerR z9exponent of quantize result too large for current contextr. z7quantize result has too many digits for current context)r� r rE rQ r� r� r ri r r� rP rG r: r; r� r� rF r� rk r< �Eminr
r r )r0 rW rE r1 r? r� r) r) r+ r � s` � �
����
zDecimal.quantizec C sD t |dd�}| js|jr8| �� r(|�� p6| �� o6|�� S | j|jkS )a= Return True if self and other have the same exponent; otherwise
return False.
If either operand is a special value, the following rules are used:
* return True if both operands are infinities
* return True if both operands are NaNs
* otherwise, return False.
Tr� )r� rQ r� � is_infiniterP r� r) r) r+ � same_quantum%
s �zDecimal.same_quantumc C s� | j rt| �S | s t| jd|�S | j|krHt| j| jd| j| |�S t| j�| j | }|dk rzt| jd|d �} d}| j| }|| |�}| jd|� p�d}|dkr�tt |�d �}t| j||�S )as Rescale self so that the exponent is exp, either by padding with zeros
or by truncating digits, using the given rounding mode.
Specials are returned without change. This operation is
quiet: it raises no flags, and uses no information from the
context.
exp = exp to scale to (an integer)
rounding = rounding mode
rR r& r� r. N)
rQ r r: r; rP r< rk r� re rV )r0 rW rE r} Z
this_functionr� r� r) r) r+ r� 4
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zDecimal._rescalec C sf |dkrt d��| js| s"t| �S | �| �� d | |�}|�� | �� krb|�|�� d | |�}|S )a" Round a nonzero, nonspecial Decimal to a fixed number of
significant figures, using the given rounding mode.
Infinities, NaNs and zeros are returned unaltered.
This operation is quiet: it raises no flags, and uses no
information from the context.
r& z'argument should be at least 1 in _roundr. )rq rQ r r� r� )r0 �placesrE r? r) r) r+ �_roundV
s
zDecimal._roundc C s� | j r"| j|d�}|r|S t| �S | jdkr4t| �S | sFt| jdd�S |dkrTt� }|dkrb|j}| �d|�}|| kr�|� t
� |� t � |S )aV Rounds to a nearby integer.
If no rounding mode is specified, take the rounding mode from
the context. This method raises the Rounded and Inexact flags
when appropriate.
See also: to_integral_value, which does exactly the same as
this method except that it doesn't raise Inexact or Rounded.
rL r& rR N) rQ r� r rP r: r; r rE r� ri r r �r0 rE r1 r? r) r) r+ �to_integral_exactm
s$
zDecimal.to_integral_exactc C s` |dkrt � }|dkr |j}| jr>| j|d�}|r6|S t| �S | jdkrPt| �S | �d|�S dS )z@Rounds to the nearest integer, without raising inexact, rounded.NrL r& )r rE rQ r� r rP r� rA r) r) r+ r �
s
zDecimal.to_integral_valuec C s� |dkrt � }| jrB| j|d�}|r(|S | �� rB| jdkrBt| �S | sdt| jd| jd �}|�|�S | jdkrz|� t
d�S |j d }t | �}|j
d? }|j
d@ r�|jd }t| j�d? d }n|j}t| j�d d? }|| }|dkr�|d | 9 }d
} nt|d | �\}}
|
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|�|�}|
|_|S ) z Return the square root of self.NrL r& rR r^ r. zsqrt(-x), x > 0r� r! Tr~ )r rQ r� r� r; r r: rP r� ri r rF rn rW rV rk r< r� re �
_shallow_copy�
_set_roundingr rE )r0 r1 r? rF �opr� �c�lr� r5 r� r9 r� rE r) r) r+ �sqrt�
s^
z Decimal.sqrtc C s� t |dd�}|dkrt� }| js&|jr~| �� }|�� }|s>|r~|dkrX|dkrX| �|�S |dkrr|dkrr|�|�S | �||�S | �|�}|dkr�| �|�}|dkr�|}n| }|�|�S )z�Returns the larger value.
Like max(self, other) except if one is not a number, returns
NaN (and signals if one is sNaN). Also rounds.
Tr� Nr. r& r� �r� r rQ r� r� r� r� �
compare_total�r0 r� r1 ZsnZonrF r? r) r) r+ r� s&
z Decimal.maxc C s� t |dd�}|dkrt� }| js&|jr~| �� }|�� }|s>|r~|dkrX|dkrX| �|�S |dkrr|dkrr|�|�S | �||�S | �|�}|dkr�| �|�}|dkr�| }n|}|�|�S )z�Returns the smaller value.
Like min(self, other) except if one is not a number, returns
NaN (and signals if one is sNaN). Also rounds.
Tr� Nr. r& r� rI rK r) r) r+ r� * s&
z Decimal.minc C s8 | j r
dS | jdkrdS | j| jd� }|dt|� kS )z"Returns whether self is an integerFr& TNrR )rQ rP r< rk )r0 �restr) r) r+ r L s
zDecimal._isintegerc C s& | r| j dkrdS | jd| j dkS )z:Returns True if self is even. Assumes self is an integer.r& Tr� r )rP r< r� r) r) r+ r U s zDecimal._isevenc C s2 z| j t| j� d W S tk
r, Y dS X dS )z$Return the adjusted exponent of selfr. r& N)rP rk r< rw r� r) r) r+ r� [ s zDecimal.adjustedc C s | S )z�Returns the same Decimal object.
As we do not have different encodings for the same number, the
received object already is in its canonical form.
r) r� r) r) r+ � canonicalc s zDecimal.canonicalc C s. t |dd�}| �||�}|r |S | j||d�S )z�Compares self to the other operand numerically.
It's pretty much like compare(), but all NaNs signal, with signaling
NaNs taking precedence over quiet NaNs.
Tr� rL )r� r� r� r� r) r) r+ �compare_signalk s
zDecimal.compare_signalc C s` t |dd�}| jr |js tS | js,|jr,tS | j}| �� }|�� }|sL|�r||kr�t| j�| jf}t|j�|jf}||k r�|r�tS tS ||kr�|r�tS tS tS |r�|dkr�tS |dkr�tS |dkr�tS |dkr�tS n2|dkr�tS |dkr�tS |dkr�tS |dk�rtS | |k �rtS | |k�r$tS | j|jk �r@|�r<tS tS | j|jk�r\|�rXtS tS tS )z�Compares self to other using the abstract representations.
This is not like the standard compare, which use their numerical
value. Note that a total ordering is defined for all possible abstract
representations.
Tr� r. r^ ) r� r; � _NegativeOner/ r� rk r< �_ZerorP )r0 r� r1 rC Zself_nanZ other_nanZself_keyZ other_keyr) r) r+ rJ w sf
zDecimal.compare_totalc C s& t |dd�}| �� }|�� }|�|�S )z�Compares self to other using abstract repr., ignoring sign.
Like compare_total, but with operand's sign ignored and assumed to be 0.
Tr� )r� r� rJ )r0 r� r1 r� �or) r) r+ �compare_total_mag� s zDecimal.compare_total_magc C s t d| j| j| j�S )z'Returns a copy with the sign set to 0. r& )r: r< rP rQ r� r) r) r+ r� � s zDecimal.copy_absc C s2 | j rtd| j| j| j�S td| j| j| j�S dS )z&Returns a copy with the sign inverted.r& r. N)r; r: r< rP rQ r� r) r) r+ r� � s zDecimal.copy_negatec C s" t |dd�}t|j| j| j| j�S )z$Returns self with the sign of other.Tr� )r� r: r; r< rP rQ r� r) r) r+ � copy_sign� s
�zDecimal.copy_signc C s� |dkrt � }| j|d�}|r"|S | �� dkr2tS | s:tS | �� dkrNt| �S |j}| �� }| jdkr�|t t
|j d d ��kr�t dd|j d �}�n0| jdkr�|t t
|�
� d d ��kr�t dd|�
� d �}n�| jdk�r || k �r t ddd|d d | �}n�| jdk�rD|| d k �rDt dd |d | d �}n�t| �}|j|j }}|jdk�rl| }d}t|||| �\} }
| d
d t t
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�}|�� }|�t�} |�|�}| |_|S ) zReturns e ** self.NrL r� r. r& r\ r� rR rD r~ r� )r r� r� rP r/ r rF r� r; rk re rG r: r� rn rV rW rC �_dexprC rD r r� rE ) r0 r1 r? r% �adjrE rF r� r6 r� rW rE r) r) r+ rW � sH $( "
z Decimal.expc C s dS )z�Return True if self is canonical; otherwise return False.
Currently, the encoding of a Decimal instance is always
canonical, so this method returns True for any Decimal.
Tr) r� r) r) r+ � is_canonical' s zDecimal.is_canonicalc C s | j S )z�Return True if self is finite; otherwise return False.
A Decimal instance is considered finite if it is neither
infinite nor a NaN.
)rQ r� r) r) r+ � is_finite/ s zDecimal.is_finitec C s
| j dkS )z8Return True if self is infinite; otherwise return False.r[ �rP r� r) r) r+ r= 7 s zDecimal.is_infinitec C s
| j dkS )z>Return True if self is a qNaN or sNaN; otherwise return False.r` rX r� r) r) r+ r� ; s zDecimal.is_nanc C s* | j s
| sdS |dkr t� }|j| �� kS )z?Return True if self is a normal number; otherwise return False.FN)rQ r r< r� r� r) r) r+ � is_normal? s
zDecimal.is_normalc C s
| j dkS )z;Return True if self is a quiet NaN; otherwise return False.r9 rX r� r) r) r+ r� G s zDecimal.is_qnanc C s
| j dkS )z8Return True if self is negative; otherwise return False.r. )r; r� r) r) r+ � is_signedK s zDecimal.is_signedc C s
| j dkS )z?Return True if self is a signaling NaN; otherwise return False.rZ rX r� r) r) r+ r� O s zDecimal.is_snanc C s* | j s
| sdS |dkr t� }| �� |jk S )z9Return True if self is subnormal; otherwise return False.FN)rQ r r� r< r� r) r) r+ � is_subnormalS s
zDecimal.is_subnormalc C s | j o| jdkS )z6Return True if self is a zero; otherwise return False.rR r� r� r) r) r+ �is_zero[ s zDecimal.is_zeroc C s� | j t| j� d }|dkr4tt|d d ��d S |dkrXttd| d d ��d S t| �}|j|j }}|dkr�t|d| �}t|�}t|�t|� ||k S |ttd| | �� d S )z�Compute a lower bound for the adjusted exponent of self.ln().
In other words, compute r such that self.ln() >= 10**r. Assumes
that self is finite and positive and that self != 1.
r. � r� r� r� r& �rP rk r< re rn rV rW �r0 rU rE rF r� �numZdenr) r) r+ �
_ln_exp_bound_ s zDecimal._ln_exp_boundc
C s |dkrt � }| j|d�}|r"|S | s*tS | �� dkr:tS | tkrFtS | jdkr\|�t d�S t
| �}|j |j }}|j
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z/Returns the natural (base e) logarithm of self.NrL r. zln of a negative valuer^ r~ r� r\ r& )r r� �_NegativeInfinityr� � _Infinityr/ rP r; ri r rn rV rW rF ra �_dlogrk re rm r: rC rD r r� rE �
r0 r1 r? rE rF r� r% r? r� rE r) r) r+ �lnx s:
� $
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Decimal.lnc C s� | j t| j� d }|dkr,tt|��d S |dkrHttd| ��d S t| �}|j|j }}|dkr�t|d| �}td| �}t|�t|� ||k d S td| | �}t|�| |dk d S ) z�Compute a lower bound for the adjusted exponent of self.log10().
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Assumes that self is finite and positive and that self != 1.
r. r� r� r& r� �� r^ Z231r^ r_ r) r) r+ r0 � s zDecimal._log10_exp_boundc
C sF |dkrt � }| j|d�}|r"|S | s*tS | �� dkr:tS | jdkrP|�td�S | jd dkr�| jdd� dt | j�d kr�t
| j t | j� d �}n�t | �}|j
|j }}|j}|| �� d }t|||�}|d d
t tt|���| d r��q|d 7 }q�tt
|dk �tt|��| �}|�� }|�t�} |�|�}| |_|S ) z&Returns the base 10 logarithm of self.NrL r. zlog10 of a negative valuer& r� rR r^ r~ r� r\ )r r� rb r� rc r; ri r r< rk r rP rn rV rW rF r0 �_dlog10re rm r: rC rD r r� rE re r) r) r+ �log10� s:
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Decimal.log10c C sV | j |d�}|r|S |dkr"t� }| �� r.tS | s@|�tdd�S t| �� �}|�|�S )aM Returns the exponent of the magnitude of self's MSD.
The result is the integer which is the exponent of the magnitude
of the most significant digit of self (as though it were truncated
to a single digit while maintaining the value of that digit and
without limiting the resulting exponent).
rL Nzlogb(0)r. ) r� r r� rc ri r
r r� r� r� r) r) r+ �logb� s z Decimal.logbc C s6 | j dks| jdkrdS | jD ]}|dkr dS q dS )z�Return True if self is a logical operand.
For being logical, it must be a finite number with a sign of 0,
an exponent of 0, and a coefficient whose digits must all be
either 0 or 1.
r& FZ01T)r; rP r< )r0 �digr) r) r+ �
_islogical
s
zDecimal._islogicalc C s� |j t|� }|dkr$d| | }n|dk r<||j d � }|j t|� }|dkr`d| | }n|dk rx||j d � }||fS )Nr& rR )rF rk )r0 r1 �opa�opbZdifr) r) r+ �
_fill_logical'
s zDecimal._fill_logicalc C sz |dkrt � }t|dd�}| �� r*|�� s4|�t�S | �|| j|j�\}}d�dd� t||�D ��}t d|�
d�ptdd�S ) z;Applies an 'and' operation between self and other's digits.NTr� rT c S s$ g | ] \}}t t|�t|�@ ��qS r) �re rV ��.0r- �br) r) r+ �
<listcomp>B
s z'Decimal.logical_and.<locals>.<listcomp>r& rR � r r� rl ri r ro r< rs �zipr: rl �r0 r� r1 rm rn r� r) r) r+ � logical_and4
s
zDecimal.logical_andc C s( |dkrt � }| �tdd|j d�|�S )zInvert all its digits.Nr& r� )r � logical_xorr: rF r� r) r) r+ �logical_invertE
s
�zDecimal.logical_invertc C sz |dkrt � }t|dd�}| �� r*|�� s4|�t�S | �|| j|j�\}}d�dd� t||�D ��}t d|�
d�ptdd�S ) z:Applies an 'or' operation between self and other's digits.NTr� rT c S s$ g | ] \}}t t|�t|�B ��qS r) rp rq r) r) r+ rt Z
s z&Decimal.logical_or.<locals>.<listcomp>r& rR ru rw r) r) r+ �
logical_orL
s
zDecimal.logical_orc C sz |dkrt � }t|dd�}| �� r*|�� s4|�t�S | �|| j|j�\}}d�dd� t||�D ��}t d|�
d�ptdd�S ) z;Applies an 'xor' operation between self and other's digits.NTr� rT c S s$ g | ] \}}t t|�t|�A ��qS r) rp rq r) r) r+ rt k
s z'Decimal.logical_xor.<locals>.<listcomp>r& rR ru rw r) r) r+ ry ]
s
zDecimal.logical_xorc C s� t |dd�}|dkrt� }| js&|jr~| �� }|�� }|s>|r~|dkrX|dkrX| �|�S |dkrr|dkrr|�|�S | �||�S | �� �|�� �}|dkr�| �|�}|dkr�|}n| }|�|�S �z8Compares the values numerically with their sign ignored.Tr� Nr. r& r� � r� r rQ r� r� r� r� r� rJ rK r) r) r+ �max_magn
s&
zDecimal.max_magc C s� t |dd�}|dkrt� }| js&|jr~| �� }|�� }|s>|r~|dkrX|dkrX| �|�S |dkrr|dkrr|�|�S | �||�S | �� �|�� �}|dkr�| �|�}|dkr�| }n|}|�|�S r| r} rK r) r) r+ �min_mag�
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zDecimal.min_magc C s� |dkrt � }| j|d�}|r"|S | �� dkr2tS | �� dkrTtdd|j |�� �S |�� }|�t � |�
� | � |�}|| kr�|S | � tdd|�
� d �|�S )z=Returns the largest representable number smaller than itself.NrL r� r. r& rD r� )r r� r� rb r: rF r� rM rD r �_ignore_all_flagsr� r� r� �r0 r1 r? Znew_selfr) r) r+ �
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�zDecimal.next_minusc C s� |dkrt � }| j|d�}|r"|S | �� dkr2tS | �� dkrTtdd|j |�� �S |�� }|�t � |�
� | � |�}|| kr�|S | � tdd|�
� d �|�S )z=Returns the smallest representable number larger than itself.NrL r. r� rD r& r� )r r� r� rc r: rF r� rM rD r r� r� r� r� r� r) r) r+ � next_plus�
s$
�zDecimal.next_plusc C s� t |dd�}|dkrt� }| �||�}|r.|S | �|�}|dkrJ| �|�S |dkr^| �|�}n
| �|�}|�� r�|�t d|j
� |�t � |�t � nD|�
� |jk r�|�t� |�t� |�t � |�t � |s�|�t� |S )a� Returns the number closest to self, in the direction towards other.
The result is the closest representable number to self
(excluding self) that is in the direction towards other,
unless both have the same value. If the two operands are
numerically equal, then the result is a copy of self with the
sign set to be the same as the sign of other.
Tr� Nr& r� z Infinite result from next_toward)r� r r� r� rS r� r� r� ri r r; r r r� r< r r
r )r0 r� r1 r? Z
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zDecimal.next_towardc C s� | � � r dS | �� rdS | �� }|dkr,dS |dkr8dS | �� rN| jrJdS dS |d kr\t� }| j|d
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S dS d S )a Returns an indication of the class of self.
The class is one of the following strings:
sNaN
NaN
-Infinity
-Normal
-Subnormal
-Zero
+Zero
+Subnormal
+Normal
+Infinity
r� r� r. z +Infinityr� z -Infinityz-Zeroz+ZeroNrL z
-Subnormalz
+Subnormalz-Normalz+Normal)r� r� r� r\ r; r r[ )r0 r1 �infr) r) r+ � number_class s, zDecimal.number_classc C s t d�S )z'Just returns 10, as this is Decimal, :)r� r� r� r) r) r+ �radix0 s z
Decimal.radixc C s� |dkrt � }t|dd�}| �||�}|r.|S |jdkrB|�t�S |j t|� kr`|jksln |�t�S | �� r|t | �S t|�}| j
}|jt |� }|dkr�d| | }n|dk r�|| d� }||d� |d|� }t | j
|�d�p�d| j�S )z5Returns a rotated copy of self, value-of-other times.NTr� r& rR �r r� r� rP ri r rF rV r� r r< rk r: r; rl )r0 r� r1 r? �torot�rotdig�topadZrotatedr) r) r+ �rotate4 s0
�zDecimal.rotatec C s� |dkrt � }t|dd�}| �||�}|r.|S |jdkrB|�t�S d|j|j }d|j|j }|t|� krz|ks�n |�t�S | � � r�t
| �S t | j | j
| jt|� �}|�|�}|S )z>Returns self operand after adding the second value to its exp.NTr� r& r� r^ )r r� r� rP ri r rG rF rV r� r r: r; r< r� )r0 r� r1 r? ZliminfZlimsupr� r) r) r+ �scalebU s"
zDecimal.scalebc C s |dkrt � }t|dd�}| �||�}|r.|S |jdkrB|�t�S |j t|� kr`|jksln |�t�S | �� r|t | �S t|�}| j
}|jt |� }|dkr�d| | }n|dk r�|| d� }|dk r�|d|� }n |d| }||j d� }t | j
|�d��p
d| j�S )z5Returns a shifted copy of self, value-of-other times.NTr� r& rR r� )r0 r� r1 r? r� r� r� Zshiftedr) r) r+ r� n s6
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__reduce__� s zDecimal.__reduce__c C s t | �tkr| S | �t| ��S r( ��typer r� re r� r) r) r+ �__copy__� s zDecimal.__copy__c C s t | �tkr| S | �t| ��S r( r� )r0 Zmemor) r) r+ � __deepcopy__� s zDecimal.__deepcopy__c C sJ |dkrt � }t||d�}| jrXt| j|�}t| �� �}|d dkrL|d7 }t|||�S |d dkrvddg|j |d< |d dkr�t | j| j
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|�S )a| Format a Decimal instance according to the given specifier.
The specifier should be a standard format specifier, with the
form described in PEP 3101. Formatting types 'e', 'E', 'f',
'F', 'g', 'G', 'n' and '%' are supported. If the formatting
type is omitted it defaults to 'g' or 'G', depending on the
value of context.capitals.
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prec - precision (for use in rounding, division, square roots..)
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traps - If traps[exception] = 1, then the exception is
raised when it is caused. Otherwise, a value is
substituted in.
flags - When an exception is caused, flags[exception] is set.
(Whether or not the trap_enabler is set)
Should be reset by user of Decimal instance.
Emin - Minimum exponent
Emax - Maximum exponent
capitals - If 1, 1*10^1 is printed as 1E+1.
If 0, printed as 1e1
clamp - If 1, change exponents if too high (Default 0)
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� D ��| _n� | _d S )Nc 3 s | ]}|t |� k�fV qd S r( �rV �rr r� �r3 r) r+ � <genexpr>I s z#Context.__init__.<locals>.<genexpr>r& c 3 s | ]}|t |� k�fV qd S r( r� r� �r4 r) r+ r� P s )r � NameErrorrF rE r< rG r� r� �_ignored_flagsr3 rM rd r� r2 �fromkeysr4 ) r0 rF rE r< rG r� r� r4 r3 r� Zdcr) )r4 r3 r+ r� 0 s.
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kr�| �||�S |dkr�t�| ||�S td| ��d S )NrF r. r� r< r� r& rG r� r� rE z%s: invalid rounding moder4 r3 r� z.'decimal.Context' object has no attribute '%s')r� �_rounding_modesrw rb r� r� �AttributeError)r0 r� ry r) r) r+ r� m s* �zContext.__setattr__c C s t d| ��d S )Nz%s cannot be deleted)r� )r0 r� r) r) r+ � __delattr__� s zContext.__delattr__c C sN dd� | j �� D �}dd� | j�� D �}| j| j| j| j| j| j| j ||ffS )Nc S s g | ]\}}|r|�qS r) r) �rr Zsigr� r) r) r+ rt � s z&Context.__reduce__.<locals>.<listcomp>c S s g | ]\}}|r|�qS r) r) r� r) r) r+ rt � s )
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zShow the current context.zrContext(prec=%(prec)d, rounding=%(rounding)s, Emin=%(Emin)d, Emax=%(Emax)d, capitals=%(capitals)d, clamp=%(clamp)dc S s g | ]\}}|r|j �qS r) �r4 )rr r� r� r) r) r+ rt � s z$Context.__repr__.<locals>.<listcomp>zflags=[z, �]c S s g | ]\}}|r|j �qS r) r� )rr r� r� r) r) r+ rt � s ztraps=[�))rr �varsr4 r� rs r3 )r0 r� �namesr) r) r+ r� � s �zContext.__repr__c C s | j D ]}d| j |< qdS )zReset all flags to zeror& Nr� �r0 �flagr) r) r+ rN � s
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C s. t | j| j| j| j| j| j| j| j| j � }|S )z!Returns a shallow copy from self.)
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� }|S )z Returns a deep copy from self.) r rF rE r< rG r� r� r4 rM r3 r� r� r) r) r+ rM � s �z Context.copyc G sZ t �||�}|| jkr(|� j| f|�� S d| j|< | j| sN|� j| f|�� S ||��dS )a# Handles an error
If the flag is in _ignored_flags, returns the default response.
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trap_enabler is set, it reraises the exception. Otherwise, it returns
the default value after setting the flag.
r. N)�_condition_maprI r� r2 r4 r3 )r0 Z conditionZ explanationr* �errorr) r) r+ ri � s
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| j t� S )z$Ignore all flags, if they are raised)�
_ignore_flagsr2 r� r) r) r+ r� � s zContext._ignore_all_flagsc G s | j t|� | _ t|�S )z$Ignore the flags, if they are raised)r� ro )r0 r4 r) r) r+ r� � s zContext._ignore_flagsc G s8 |r t |d ttf�r |d }|D ]}| j�|� q"dS )z+Stop ignoring the flags, if they are raisedr& N)rd rp ro r� �remove)r0 r4 r� r) r) r+ �
_regard_flags� s zContext._regard_flagsc C s t | j| j d �S )z!Returns Etiny (= Emin - prec + 1)r. )rV r< rF r� r) r) r+ r� � s z
Context.Etinyc C s t | j| j d �S )z,Returns maximum exponent (= Emax - prec + 1)r. )rV rG rF r� r) r) r+ r� � s z Context.Etopc C s | j }|| _ |S )a� Sets the rounding type.
Sets the rounding type, and returns the current (previous)
rounding type. Often used like:
context = context.copy()
# so you don't change the calling context
# if an error occurs in the middle.
rounding = context._set_rounding(ROUND_UP)
val = self.__sub__(other, context=context)
context._set_rounding(rounding)
This will make it round up for that operation.
)rE )r0 r� rE r) r) r+ rD � s zContext._set_roundingrR c C sj t |t�r*||�� ks d|kr*| �td�S t|| d�}|�� r`t|j�| j | j
kr`| �td�S |� | �S )z�Creates a new Decimal instance but using self as context.
This method implements the to-number operation of the
IBM Decimal specification.rS zAtrailing or leading whitespace and underscores are not permitted.rL z diagnostic info too long in NaN) rd re rg ri r r r� rk r< rF r� r� )r0 r` r� r) r) r+ �create_decimal� s � �zContext.create_decimalc C s t �|�}|�| �S )a� Creates a new Decimal instance from a float but rounding using self
as the context.
>>> context = Context(prec=5, rounding=ROUND_DOWN)
>>> context.create_decimal_from_float(3.1415926535897932)
Decimal('3.1415')
>>> context = Context(prec=5, traps=[Inexact])
>>> context.create_decimal_from_float(3.1415926535897932)
Traceback (most recent call last):
...
decimal.Inexact: None
)r rv r� )r0 r� r� r) r) r+ �create_decimal_from_float s
z!Context.create_decimal_from_floatc C s t |dd�}|j| d�S )a[ Returns the absolute value of the operand.
If the operand is negative, the result is the same as using the minus
operation on the operand. Otherwise, the result is the same as using
the plus operation on the operand.
>>> ExtendedContext.abs(Decimal('2.1'))
Decimal('2.1')
>>> ExtendedContext.abs(Decimal('-100'))
Decimal('100')
>>> ExtendedContext.abs(Decimal('101.5'))
Decimal('101.5')
>>> ExtendedContext.abs(Decimal('-101.5'))
Decimal('101.5')
>>> ExtendedContext.abs(-1)
Decimal('1')
Tr� rL )r� r� �r0 r- r) r) r+ rm ! s z Context.absc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a� Return the sum of the two operands.
>>> ExtendedContext.add(Decimal('12'), Decimal('7.00'))
Decimal('19.00')
>>> ExtendedContext.add(Decimal('1E+2'), Decimal('1.01E+4'))
Decimal('1.02E+4')
>>> ExtendedContext.add(1, Decimal(2))
Decimal('3')
>>> ExtendedContext.add(Decimal(8), 5)
Decimal('13')
>>> ExtendedContext.add(5, 5)
Decimal('10')
Tr� rL � Unable to convert %s to DecimalN)r� r� r� rw �r0 r- rs r� r) r) r+ �add6 s
z Context.addc C s t |�| ��S r( )re r� r� r) r) r+ �_applyK s zContext._applyc C s t |t�std��|�� S )z�Returns the same Decimal object.
As we do not have different encodings for the same number, the
received object already is in its canonical form.
>>> ExtendedContext.canonical(Decimal('2.50'))
Decimal('2.50')
z,canonical requires a Decimal as an argument.)rd r rw rM r� r) r) r+ rM N s
zContext.canonicalc C s t |dd�}|j|| d�S )a� Compares values numerically.
If the signs of the operands differ, a value representing each operand
('-1' if the operand is less than zero, '0' if the operand is zero or
negative zero, or '1' if the operand is greater than zero) is used in
place of that operand for the comparison instead of the actual
operand.
The comparison is then effected by subtracting the second operand from
the first and then returning a value according to the result of the
subtraction: '-1' if the result is less than zero, '0' if the result is
zero or negative zero, or '1' if the result is greater than zero.
>>> ExtendedContext.compare(Decimal('2.1'), Decimal('3'))
Decimal('-1')
>>> ExtendedContext.compare(Decimal('2.1'), Decimal('2.1'))
Decimal('0')
>>> ExtendedContext.compare(Decimal('2.1'), Decimal('2.10'))
Decimal('0')
>>> ExtendedContext.compare(Decimal('3'), Decimal('2.1'))
Decimal('1')
>>> ExtendedContext.compare(Decimal('2.1'), Decimal('-3'))
Decimal('1')
>>> ExtendedContext.compare(Decimal('-3'), Decimal('2.1'))
Decimal('-1')
>>> ExtendedContext.compare(1, 2)
Decimal('-1')
>>> ExtendedContext.compare(Decimal(1), 2)
Decimal('-1')
>>> ExtendedContext.compare(1, Decimal(2))
Decimal('-1')
Tr� rL )r� r� �r0 r- rs r) r) r+ r� [ s ! zContext.comparec C s t |dd�}|j|| d�S )a Compares the values of the two operands numerically.
It's pretty much like compare(), but all NaNs signal, with signaling
NaNs taking precedence over quiet NaNs.
>>> c = ExtendedContext
>>> c.compare_signal(Decimal('2.1'), Decimal('3'))
Decimal('-1')
>>> c.compare_signal(Decimal('2.1'), Decimal('2.1'))
Decimal('0')
>>> c.flags[InvalidOperation] = 0
>>> print(c.flags[InvalidOperation])
0
>>> c.compare_signal(Decimal('NaN'), Decimal('2.1'))
Decimal('NaN')
>>> print(c.flags[InvalidOperation])
1
>>> c.flags[InvalidOperation] = 0
>>> print(c.flags[InvalidOperation])
0
>>> c.compare_signal(Decimal('sNaN'), Decimal('2.1'))
Decimal('NaN')
>>> print(c.flags[InvalidOperation])
1
>>> c.compare_signal(-1, 2)
Decimal('-1')
>>> c.compare_signal(Decimal(-1), 2)
Decimal('-1')
>>> c.compare_signal(-1, Decimal(2))
Decimal('-1')
Tr� rL )r� rN r� r) r) r+ rN s zContext.compare_signalc C s t |dd�}|�|�S )a+ Compares two operands using their abstract representation.
This is not like the standard compare, which use their numerical
value. Note that a total ordering is defined for all possible abstract
representations.
>>> ExtendedContext.compare_total(Decimal('12.73'), Decimal('127.9'))
Decimal('-1')
>>> ExtendedContext.compare_total(Decimal('-127'), Decimal('12'))
Decimal('-1')
>>> ExtendedContext.compare_total(Decimal('12.30'), Decimal('12.3'))
Decimal('-1')
>>> ExtendedContext.compare_total(Decimal('12.30'), Decimal('12.30'))
Decimal('0')
>>> ExtendedContext.compare_total(Decimal('12.3'), Decimal('12.300'))
Decimal('1')
>>> ExtendedContext.compare_total(Decimal('12.3'), Decimal('NaN'))
Decimal('-1')
>>> ExtendedContext.compare_total(1, 2)
Decimal('-1')
>>> ExtendedContext.compare_total(Decimal(1), 2)
Decimal('-1')
>>> ExtendedContext.compare_total(1, Decimal(2))
Decimal('-1')
Tr� )r� rJ r� r) r) r+ rJ � s zContext.compare_totalc C s t |dd�}|�|�S )z�Compares two operands using their abstract representation ignoring sign.
Like compare_total, but with operand's sign ignored and assumed to be 0.
Tr� )r� rR r� r) r) r+ rR � s zContext.compare_total_magc C s t |dd�}|�� S )a Returns a copy of the operand with the sign set to 0.
>>> ExtendedContext.copy_abs(Decimal('2.1'))
Decimal('2.1')
>>> ExtendedContext.copy_abs(Decimal('-100'))
Decimal('100')
>>> ExtendedContext.copy_abs(-1)
Decimal('1')
Tr� )r� r� r� r) r) r+ r� � s
zContext.copy_absc C s t |dd�}t|�S )a Returns a copy of the decimal object.
>>> ExtendedContext.copy_decimal(Decimal('2.1'))
Decimal('2.1')
>>> ExtendedContext.copy_decimal(Decimal('-1.00'))
Decimal('-1.00')
>>> ExtendedContext.copy_decimal(1)
Decimal('1')
Tr� )r� r r� r) r) r+ � copy_decimal� s
zContext.copy_decimalc C s t |dd�}|�� S )a( Returns a copy of the operand with the sign inverted.
>>> ExtendedContext.copy_negate(Decimal('101.5'))
Decimal('-101.5')
>>> ExtendedContext.copy_negate(Decimal('-101.5'))
Decimal('101.5')
>>> ExtendedContext.copy_negate(1)
Decimal('-1')
Tr� )r� r� r� r) r) r+ r� � s
zContext.copy_negatec C s t |dd�}|�|�S )a Copies the second operand's sign to the first one.
In detail, it returns a copy of the first operand with the sign
equal to the sign of the second operand.
>>> ExtendedContext.copy_sign(Decimal( '1.50'), Decimal('7.33'))
Decimal('1.50')
>>> ExtendedContext.copy_sign(Decimal('-1.50'), Decimal('7.33'))
Decimal('1.50')
>>> ExtendedContext.copy_sign(Decimal( '1.50'), Decimal('-7.33'))
Decimal('-1.50')
>>> ExtendedContext.copy_sign(Decimal('-1.50'), Decimal('-7.33'))
Decimal('-1.50')
>>> ExtendedContext.copy_sign(1, -2)
Decimal('-1')
>>> ExtendedContext.copy_sign(Decimal(1), -2)
Decimal('-1')
>>> ExtendedContext.copy_sign(1, Decimal(-2))
Decimal('-1')
Tr� )r� rS r� r) r) r+ rS � s zContext.copy_signc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a� Decimal division in a specified context.
>>> ExtendedContext.divide(Decimal('1'), Decimal('3'))
Decimal('0.333333333')
>>> ExtendedContext.divide(Decimal('2'), Decimal('3'))
Decimal('0.666666667')
>>> ExtendedContext.divide(Decimal('5'), Decimal('2'))
Decimal('2.5')
>>> ExtendedContext.divide(Decimal('1'), Decimal('10'))
Decimal('0.1')
>>> ExtendedContext.divide(Decimal('12'), Decimal('12'))
Decimal('1')
>>> ExtendedContext.divide(Decimal('8.00'), Decimal('2'))
Decimal('4.00')
>>> ExtendedContext.divide(Decimal('2.400'), Decimal('2.0'))
Decimal('1.20')
>>> ExtendedContext.divide(Decimal('1000'), Decimal('100'))
Decimal('10')
>>> ExtendedContext.divide(Decimal('1000'), Decimal('1'))
Decimal('1000')
>>> ExtendedContext.divide(Decimal('2.40E+6'), Decimal('2'))
Decimal('1.20E+6')
>>> ExtendedContext.divide(5, 5)
Decimal('1')
>>> ExtendedContext.divide(Decimal(5), 5)
Decimal('1')
>>> ExtendedContext.divide(5, Decimal(5))
Decimal('1')
Tr� rL r� N)r� r� r� rw r� r) r) r+ �divide s
zContext.dividec C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a/ Divides two numbers and returns the integer part of the result.
>>> ExtendedContext.divide_int(Decimal('2'), Decimal('3'))
Decimal('0')
>>> ExtendedContext.divide_int(Decimal('10'), Decimal('3'))
Decimal('3')
>>> ExtendedContext.divide_int(Decimal('1'), Decimal('0.3'))
Decimal('3')
>>> ExtendedContext.divide_int(10, 3)
Decimal('3')
>>> ExtendedContext.divide_int(Decimal(10), 3)
Decimal('3')
>>> ExtendedContext.divide_int(10, Decimal(3))
Decimal('3')
Tr� rL r� N)r� r� r� rw r� r) r) r+ �
divide_int+ s
zContext.divide_intc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a� Return (a // b, a % b).
>>> ExtendedContext.divmod(Decimal(8), Decimal(3))
(Decimal('2'), Decimal('2'))
>>> ExtendedContext.divmod(Decimal(8), Decimal(4))
(Decimal('2'), Decimal('0'))
>>> ExtendedContext.divmod(8, 4)
(Decimal('2'), Decimal('0'))
>>> ExtendedContext.divmod(Decimal(8), 4)
(Decimal('2'), Decimal('0'))
>>> ExtendedContext.divmod(8, Decimal(4))
(Decimal('2'), Decimal('0'))
Tr� rL r� N)r� r� r� rw r� r) r) r+ r� B s
zContext.divmodc C s t |dd�}|j| d�S )a# Returns e ** a.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.exp(Decimal('-Infinity'))
Decimal('0')
>>> c.exp(Decimal('-1'))
Decimal('0.367879441')
>>> c.exp(Decimal('0'))
Decimal('1')
>>> c.exp(Decimal('1'))
Decimal('2.71828183')
>>> c.exp(Decimal('0.693147181'))
Decimal('2.00000000')
>>> c.exp(Decimal('+Infinity'))
Decimal('Infinity')
>>> c.exp(10)
Decimal('22026.4658')
Tr� rL )r� rW r� r) r) r+ rW W s z Context.expc C s t |dd�}|j||| d�S )a Returns a multiplied by b, plus c.
The first two operands are multiplied together, using multiply,
the third operand is then added to the result of that
multiplication, using add, all with only one final rounding.
>>> ExtendedContext.fma(Decimal('3'), Decimal('5'), Decimal('7'))
Decimal('22')
>>> ExtendedContext.fma(Decimal('3'), Decimal('-5'), Decimal('7'))
Decimal('-8')
>>> ExtendedContext.fma(Decimal('888565290'), Decimal('1557.96930'), Decimal('-86087.7578'))
Decimal('1.38435736E+12')
>>> ExtendedContext.fma(1, 3, 4)
Decimal('7')
>>> ExtendedContext.fma(1, Decimal(3), 4)
Decimal('7')
>>> ExtendedContext.fma(1, 3, Decimal(4))
Decimal('7')
Tr� rL )r� r )r0 r- rs rF r) r) r+ r o s z Context.fmac C s t |t�std��|�� S )a Return True if the operand is canonical; otherwise return False.
Currently, the encoding of a Decimal instance is always
canonical, so this method returns True for any Decimal.
>>> ExtendedContext.is_canonical(Decimal('2.50'))
True
z/is_canonical requires a Decimal as an argument.)rd r rw rV r� r) r) r+ rV � s
zContext.is_canonicalc C s t |dd�}|�� S )a, Return True if the operand is finite; otherwise return False.
A Decimal instance is considered finite if it is neither
infinite nor a NaN.
>>> ExtendedContext.is_finite(Decimal('2.50'))
True
>>> ExtendedContext.is_finite(Decimal('-0.3'))
True
>>> ExtendedContext.is_finite(Decimal('0'))
True
>>> ExtendedContext.is_finite(Decimal('Inf'))
False
>>> ExtendedContext.is_finite(Decimal('NaN'))
False
>>> ExtendedContext.is_finite(1)
True
Tr� )r� rW r� r) r) r+ rW � s zContext.is_finitec C s t |dd�}|�� S )aU Return True if the operand is infinite; otherwise return False.
>>> ExtendedContext.is_infinite(Decimal('2.50'))
False
>>> ExtendedContext.is_infinite(Decimal('-Inf'))
True
>>> ExtendedContext.is_infinite(Decimal('NaN'))
False
>>> ExtendedContext.is_infinite(1)
False
Tr� )r� r= r� r) r) r+ r= � s zContext.is_infinitec C s t |dd�}|�� S )aO Return True if the operand is a qNaN or sNaN;
otherwise return False.
>>> ExtendedContext.is_nan(Decimal('2.50'))
False
>>> ExtendedContext.is_nan(Decimal('NaN'))
True
>>> ExtendedContext.is_nan(Decimal('-sNaN'))
True
>>> ExtendedContext.is_nan(1)
False
Tr� )r� r� r� r) r) r+ r� � s
zContext.is_nanc C s t |dd�}|j| d�S )a� Return True if the operand is a normal number;
otherwise return False.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.is_normal(Decimal('2.50'))
True
>>> c.is_normal(Decimal('0.1E-999'))
False
>>> c.is_normal(Decimal('0.00'))
False
>>> c.is_normal(Decimal('-Inf'))
False
>>> c.is_normal(Decimal('NaN'))
False
>>> c.is_normal(1)
True
Tr� rL )r� rY r� r) r) r+ rY � s zContext.is_normalc C s t |dd�}|�� S )aH Return True if the operand is a quiet NaN; otherwise return False.
>>> ExtendedContext.is_qnan(Decimal('2.50'))
False
>>> ExtendedContext.is_qnan(Decimal('NaN'))
True
>>> ExtendedContext.is_qnan(Decimal('sNaN'))
False
>>> ExtendedContext.is_qnan(1)
False
Tr� )r� r� r� r) r) r+ r� � s zContext.is_qnanc C s t |dd�}|�� S )a� Return True if the operand is negative; otherwise return False.
>>> ExtendedContext.is_signed(Decimal('2.50'))
False
>>> ExtendedContext.is_signed(Decimal('-12'))
True
>>> ExtendedContext.is_signed(Decimal('-0'))
True
>>> ExtendedContext.is_signed(8)
False
>>> ExtendedContext.is_signed(-8)
True
Tr� )r� rZ r� r) r) r+ rZ � s zContext.is_signedc C s t |dd�}|�� S )aT Return True if the operand is a signaling NaN;
otherwise return False.
>>> ExtendedContext.is_snan(Decimal('2.50'))
False
>>> ExtendedContext.is_snan(Decimal('NaN'))
False
>>> ExtendedContext.is_snan(Decimal('sNaN'))
True
>>> ExtendedContext.is_snan(1)
False
Tr� )r� r� r� r) r) r+ r� � s
zContext.is_snanc C s t |dd�}|j| d�S )a� Return True if the operand is subnormal; otherwise return False.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.is_subnormal(Decimal('2.50'))
False
>>> c.is_subnormal(Decimal('0.1E-999'))
True
>>> c.is_subnormal(Decimal('0.00'))
False
>>> c.is_subnormal(Decimal('-Inf'))
False
>>> c.is_subnormal(Decimal('NaN'))
False
>>> c.is_subnormal(1)
False
Tr� rL )r� r[ r� r) r) r+ r[ s zContext.is_subnormalc C s t |dd�}|�� S )au Return True if the operand is a zero; otherwise return False.
>>> ExtendedContext.is_zero(Decimal('0'))
True
>>> ExtendedContext.is_zero(Decimal('2.50'))
False
>>> ExtendedContext.is_zero(Decimal('-0E+2'))
True
>>> ExtendedContext.is_zero(1)
False
>>> ExtendedContext.is_zero(0)
True
Tr� )r� r\ r� r) r) r+ r\ % s zContext.is_zeroc C s t |dd�}|j| d�S )a� Returns the natural (base e) logarithm of the operand.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.ln(Decimal('0'))
Decimal('-Infinity')
>>> c.ln(Decimal('1.000'))
Decimal('0')
>>> c.ln(Decimal('2.71828183'))
Decimal('1.00000000')
>>> c.ln(Decimal('10'))
Decimal('2.30258509')
>>> c.ln(Decimal('+Infinity'))
Decimal('Infinity')
>>> c.ln(1)
Decimal('0')
Tr� rL )r� rf r� r) r) r+ rf 6 s z
Context.lnc C s t |dd�}|j| d�S )a� Returns the base 10 logarithm of the operand.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.log10(Decimal('0'))
Decimal('-Infinity')
>>> c.log10(Decimal('0.001'))
Decimal('-3')
>>> c.log10(Decimal('1.000'))
Decimal('0')
>>> c.log10(Decimal('2'))
Decimal('0.301029996')
>>> c.log10(Decimal('10'))
Decimal('1')
>>> c.log10(Decimal('70'))
Decimal('1.84509804')
>>> c.log10(Decimal('+Infinity'))
Decimal('Infinity')
>>> c.log10(0)
Decimal('-Infinity')
>>> c.log10(1)
Decimal('0')
Tr� rL )r� ri r� r) r) r+ ri L s z
Context.log10c C s t |dd�}|j| d�S )a4 Returns the exponent of the magnitude of the operand's MSD.
The result is the integer which is the exponent of the magnitude
of the most significant digit of the operand (as though the
operand were truncated to a single digit while maintaining the
value of that digit and without limiting the resulting exponent).
>>> ExtendedContext.logb(Decimal('250'))
Decimal('2')
>>> ExtendedContext.logb(Decimal('2.50'))
Decimal('0')
>>> ExtendedContext.logb(Decimal('0.03'))
Decimal('-2')
>>> ExtendedContext.logb(Decimal('0'))
Decimal('-Infinity')
>>> ExtendedContext.logb(1)
Decimal('0')
>>> ExtendedContext.logb(10)
Decimal('1')
>>> ExtendedContext.logb(100)
Decimal('2')
Tr� rL )r� rj r� r) r) r+ rj h s z Context.logbc C s t |dd�}|j|| d�S )a� Applies the logical operation 'and' between each operand's digits.
The operands must be both logical numbers.
>>> ExtendedContext.logical_and(Decimal('0'), Decimal('0'))
Decimal('0')
>>> ExtendedContext.logical_and(Decimal('0'), Decimal('1'))
Decimal('0')
>>> ExtendedContext.logical_and(Decimal('1'), Decimal('0'))
Decimal('0')
>>> ExtendedContext.logical_and(Decimal('1'), Decimal('1'))
Decimal('1')
>>> ExtendedContext.logical_and(Decimal('1100'), Decimal('1010'))
Decimal('1000')
>>> ExtendedContext.logical_and(Decimal('1111'), Decimal('10'))
Decimal('10')
>>> ExtendedContext.logical_and(110, 1101)
Decimal('100')
>>> ExtendedContext.logical_and(Decimal(110), 1101)
Decimal('100')
>>> ExtendedContext.logical_and(110, Decimal(1101))
Decimal('100')
Tr� rL )r� rx r� r) r) r+ rx � s zContext.logical_andc C s t |dd�}|j| d�S )a Invert all the digits in the operand.
The operand must be a logical number.
>>> ExtendedContext.logical_invert(Decimal('0'))
Decimal('111111111')
>>> ExtendedContext.logical_invert(Decimal('1'))
Decimal('111111110')
>>> ExtendedContext.logical_invert(Decimal('111111111'))
Decimal('0')
>>> ExtendedContext.logical_invert(Decimal('101010101'))
Decimal('10101010')
>>> ExtendedContext.logical_invert(1101)
Decimal('111110010')
Tr� rL )r� rz r� r) r) r+ rz � s zContext.logical_invertc C s t |dd�}|j|| d�S )a� Applies the logical operation 'or' between each operand's digits.
The operands must be both logical numbers.
>>> ExtendedContext.logical_or(Decimal('0'), Decimal('0'))
Decimal('0')
>>> ExtendedContext.logical_or(Decimal('0'), Decimal('1'))
Decimal('1')
>>> ExtendedContext.logical_or(Decimal('1'), Decimal('0'))
Decimal('1')
>>> ExtendedContext.logical_or(Decimal('1'), Decimal('1'))
Decimal('1')
>>> ExtendedContext.logical_or(Decimal('1100'), Decimal('1010'))
Decimal('1110')
>>> ExtendedContext.logical_or(Decimal('1110'), Decimal('10'))
Decimal('1110')
>>> ExtendedContext.logical_or(110, 1101)
Decimal('1111')
>>> ExtendedContext.logical_or(Decimal(110), 1101)
Decimal('1111')
>>> ExtendedContext.logical_or(110, Decimal(1101))
Decimal('1111')
Tr� rL )r� r{ r� r) r) r+ r{ � s zContext.logical_orc C s t |dd�}|j|| d�S )a� Applies the logical operation 'xor' between each operand's digits.
The operands must be both logical numbers.
>>> ExtendedContext.logical_xor(Decimal('0'), Decimal('0'))
Decimal('0')
>>> ExtendedContext.logical_xor(Decimal('0'), Decimal('1'))
Decimal('1')
>>> ExtendedContext.logical_xor(Decimal('1'), Decimal('0'))
Decimal('1')
>>> ExtendedContext.logical_xor(Decimal('1'), Decimal('1'))
Decimal('0')
>>> ExtendedContext.logical_xor(Decimal('1100'), Decimal('1010'))
Decimal('110')
>>> ExtendedContext.logical_xor(Decimal('1111'), Decimal('10'))
Decimal('1101')
>>> ExtendedContext.logical_xor(110, 1101)
Decimal('1011')
>>> ExtendedContext.logical_xor(Decimal(110), 1101)
Decimal('1011')
>>> ExtendedContext.logical_xor(110, Decimal(1101))
Decimal('1011')
Tr� rL )r� ry r� r) r) r+ ry � s zContext.logical_xorc C s t |dd�}|j|| d�S )a� max compares two values numerically and returns the maximum.
If either operand is a NaN then the general rules apply.
Otherwise, the operands are compared as though by the compare
operation. If they are numerically equal then the left-hand operand
is chosen as the result. Otherwise the maximum (closer to positive
infinity) of the two operands is chosen as the result.
>>> ExtendedContext.max(Decimal('3'), Decimal('2'))
Decimal('3')
>>> ExtendedContext.max(Decimal('-10'), Decimal('3'))
Decimal('3')
>>> ExtendedContext.max(Decimal('1.0'), Decimal('1'))
Decimal('1')
>>> ExtendedContext.max(Decimal('7'), Decimal('NaN'))
Decimal('7')
>>> ExtendedContext.max(1, 2)
Decimal('2')
>>> ExtendedContext.max(Decimal(1), 2)
Decimal('2')
>>> ExtendedContext.max(1, Decimal(2))
Decimal('2')
Tr� rL )r� r� r� r) r) r+ r� � s z Context.maxc C s t |dd�}|j|| d�S )a� Compares the values numerically with their sign ignored.
>>> ExtendedContext.max_mag(Decimal('7'), Decimal('NaN'))
Decimal('7')
>>> ExtendedContext.max_mag(Decimal('7'), Decimal('-10'))
Decimal('-10')
>>> ExtendedContext.max_mag(1, -2)
Decimal('-2')
>>> ExtendedContext.max_mag(Decimal(1), -2)
Decimal('-2')
>>> ExtendedContext.max_mag(1, Decimal(-2))
Decimal('-2')
Tr� rL )r� r~ r� r) r) r+ r~ s zContext.max_magc C s t |dd�}|j|| d�S )a� min compares two values numerically and returns the minimum.
If either operand is a NaN then the general rules apply.
Otherwise, the operands are compared as though by the compare
operation. If they are numerically equal then the left-hand operand
is chosen as the result. Otherwise the minimum (closer to negative
infinity) of the two operands is chosen as the result.
>>> ExtendedContext.min(Decimal('3'), Decimal('2'))
Decimal('2')
>>> ExtendedContext.min(Decimal('-10'), Decimal('3'))
Decimal('-10')
>>> ExtendedContext.min(Decimal('1.0'), Decimal('1'))
Decimal('1.0')
>>> ExtendedContext.min(Decimal('7'), Decimal('NaN'))
Decimal('7')
>>> ExtendedContext.min(1, 2)
Decimal('1')
>>> ExtendedContext.min(Decimal(1), 2)
Decimal('1')
>>> ExtendedContext.min(1, Decimal(29))
Decimal('1')
Tr� rL )r� r� r� r) r) r+ r� s z Context.minc C s t |dd�}|j|| d�S )a� Compares the values numerically with their sign ignored.
>>> ExtendedContext.min_mag(Decimal('3'), Decimal('-2'))
Decimal('-2')
>>> ExtendedContext.min_mag(Decimal('-3'), Decimal('NaN'))
Decimal('-3')
>>> ExtendedContext.min_mag(1, -2)
Decimal('1')
>>> ExtendedContext.min_mag(Decimal(1), -2)
Decimal('1')
>>> ExtendedContext.min_mag(1, Decimal(-2))
Decimal('1')
Tr� rL )r� r r� r) r) r+ r - s zContext.min_magc C s t |dd�}|j| d�S )a� Minus corresponds to unary prefix minus in Python.
The operation is evaluated using the same rules as subtract; the
operation minus(a) is calculated as subtract('0', a) where the '0'
has the same exponent as the operand.
>>> ExtendedContext.minus(Decimal('1.3'))
Decimal('-1.3')
>>> ExtendedContext.minus(Decimal('-1.3'))
Decimal('1.3')
>>> ExtendedContext.minus(1)
Decimal('-1')
Tr� rL )r� r� r� r) r) r+ �minus> s z
Context.minusc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a� multiply multiplies two operands.
If either operand is a special value then the general rules apply.
Otherwise, the operands are multiplied together
('long multiplication'), resulting in a number which may be as long as
the sum of the lengths of the two operands.
>>> ExtendedContext.multiply(Decimal('1.20'), Decimal('3'))
Decimal('3.60')
>>> ExtendedContext.multiply(Decimal('7'), Decimal('3'))
Decimal('21')
>>> ExtendedContext.multiply(Decimal('0.9'), Decimal('0.8'))
Decimal('0.72')
>>> ExtendedContext.multiply(Decimal('0.9'), Decimal('-0'))
Decimal('-0.0')
>>> ExtendedContext.multiply(Decimal('654321'), Decimal('654321'))
Decimal('4.28135971E+11')
>>> ExtendedContext.multiply(7, 7)
Decimal('49')
>>> ExtendedContext.multiply(Decimal(7), 7)
Decimal('49')
>>> ExtendedContext.multiply(7, Decimal(7))
Decimal('49')
Tr� rL r� N)r� r� r� rw r� r) r) r+ �multiplyO s
zContext.multiplyc C s t |dd�}|j| d�S )a" Returns the largest representable number smaller than a.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> ExtendedContext.next_minus(Decimal('1'))
Decimal('0.999999999')
>>> c.next_minus(Decimal('1E-1007'))
Decimal('0E-1007')
>>> ExtendedContext.next_minus(Decimal('-1.00000003'))
Decimal('-1.00000004')
>>> c.next_minus(Decimal('Infinity'))
Decimal('9.99999999E+999')
>>> c.next_minus(1)
Decimal('0.999999999')
Tr� rL )r� r� r� r) r) r+ r� o s zContext.next_minusc C s t |dd�}|j| d�S )a Returns the smallest representable number larger than a.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> ExtendedContext.next_plus(Decimal('1'))
Decimal('1.00000001')
>>> c.next_plus(Decimal('-1E-1007'))
Decimal('-0E-1007')
>>> ExtendedContext.next_plus(Decimal('-1.00000003'))
Decimal('-1.00000002')
>>> c.next_plus(Decimal('-Infinity'))
Decimal('-9.99999999E+999')
>>> c.next_plus(1)
Decimal('1.00000001')
Tr� rL )r� r� r� r) r) r+ r� � s zContext.next_plusc C s t |dd�}|j|| d�S )a� Returns the number closest to a, in direction towards b.
The result is the closest representable number from the first
operand (but not the first operand) that is in the direction
towards the second operand, unless the operands have the same
value.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.next_toward(Decimal('1'), Decimal('2'))
Decimal('1.00000001')
>>> c.next_toward(Decimal('-1E-1007'), Decimal('1'))
Decimal('-0E-1007')
>>> c.next_toward(Decimal('-1.00000003'), Decimal('0'))
Decimal('-1.00000002')
>>> c.next_toward(Decimal('1'), Decimal('0'))
Decimal('0.999999999')
>>> c.next_toward(Decimal('1E-1007'), Decimal('-100'))
Decimal('0E-1007')
>>> c.next_toward(Decimal('-1.00000003'), Decimal('-10'))
Decimal('-1.00000004')
>>> c.next_toward(Decimal('0.00'), Decimal('-0.0000'))
Decimal('-0.00')
>>> c.next_toward(0, 1)
Decimal('1E-1007')
>>> c.next_toward(Decimal(0), 1)
Decimal('1E-1007')
>>> c.next_toward(0, Decimal(1))
Decimal('1E-1007')
Tr� rL )r� r� r� r) r) r+ r� � s zContext.next_towardc C s t |dd�}|j| d�S )a� normalize reduces an operand to its simplest form.
Essentially a plus operation with all trailing zeros removed from the
result.
>>> ExtendedContext.normalize(Decimal('2.1'))
Decimal('2.1')
>>> ExtendedContext.normalize(Decimal('-2.0'))
Decimal('-2')
>>> ExtendedContext.normalize(Decimal('1.200'))
Decimal('1.2')
>>> ExtendedContext.normalize(Decimal('-120'))
Decimal('-1.2E+2')
>>> ExtendedContext.normalize(Decimal('120.00'))
Decimal('1.2E+2')
>>> ExtendedContext.normalize(Decimal('0.00'))
Decimal('0')
>>> ExtendedContext.normalize(6)
Decimal('6')
Tr� rL )r� r; r� r) r) r+ r; � s zContext.normalizec C s t |dd�}|j| d�S )a� Returns an indication of the class of the operand.
The class is one of the following strings:
-sNaN
-NaN
-Infinity
-Normal
-Subnormal
-Zero
+Zero
+Subnormal
+Normal
+Infinity
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.number_class(Decimal('Infinity'))
'+Infinity'
>>> c.number_class(Decimal('1E-10'))
'+Normal'
>>> c.number_class(Decimal('2.50'))
'+Normal'
>>> c.number_class(Decimal('0.1E-999'))
'+Subnormal'
>>> c.number_class(Decimal('0'))
'+Zero'
>>> c.number_class(Decimal('-0'))
'-Zero'
>>> c.number_class(Decimal('-0.1E-999'))
'-Subnormal'
>>> c.number_class(Decimal('-1E-10'))
'-Normal'
>>> c.number_class(Decimal('-2.50'))
'-Normal'
>>> c.number_class(Decimal('-Infinity'))
'-Infinity'
>>> c.number_class(Decimal('NaN'))
'NaN'
>>> c.number_class(Decimal('-NaN'))
'NaN'
>>> c.number_class(Decimal('sNaN'))
'sNaN'
>>> c.number_class(123)
'+Normal'
Tr� rL )r� r� r� r) r) r+ r� � s / zContext.number_classc C s t |dd�}|j| d�S )a� Plus corresponds to unary prefix plus in Python.
The operation is evaluated using the same rules as add; the
operation plus(a) is calculated as add('0', a) where the '0'
has the same exponent as the operand.
>>> ExtendedContext.plus(Decimal('1.3'))
Decimal('1.3')
>>> ExtendedContext.plus(Decimal('-1.3'))
Decimal('-1.3')
>>> ExtendedContext.plus(-1)
Decimal('-1')
Tr� rL )r� r� r� r) r) r+ �plus s z Context.plusc C s: t |dd�}|j||| d�}|tkr2td| ��n|S dS )a Raises a to the power of b, to modulo if given.
With two arguments, compute a**b. If a is negative then b
must be integral. The result will be inexact unless b is
integral and the result is finite and can be expressed exactly
in 'precision' digits.
With three arguments, compute (a**b) % modulo. For the
three argument form, the following restrictions on the
arguments hold:
- all three arguments must be integral
- b must be nonnegative
- at least one of a or b must be nonzero
- modulo must be nonzero and have at most 'precision' digits
The result of pow(a, b, modulo) is identical to the result
that would be obtained by computing (a**b) % modulo with
unbounded precision, but is computed more efficiently. It is
always exact.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.power(Decimal('2'), Decimal('3'))
Decimal('8')
>>> c.power(Decimal('-2'), Decimal('3'))
Decimal('-8')
>>> c.power(Decimal('2'), Decimal('-3'))
Decimal('0.125')
>>> c.power(Decimal('1.7'), Decimal('8'))
Decimal('69.7575744')
>>> c.power(Decimal('10'), Decimal('0.301029996'))
Decimal('2.00000000')
>>> c.power(Decimal('Infinity'), Decimal('-1'))
Decimal('0')
>>> c.power(Decimal('Infinity'), Decimal('0'))
Decimal('1')
>>> c.power(Decimal('Infinity'), Decimal('1'))
Decimal('Infinity')
>>> c.power(Decimal('-Infinity'), Decimal('-1'))
Decimal('-0')
>>> c.power(Decimal('-Infinity'), Decimal('0'))
Decimal('1')
>>> c.power(Decimal('-Infinity'), Decimal('1'))
Decimal('-Infinity')
>>> c.power(Decimal('-Infinity'), Decimal('2'))
Decimal('Infinity')
>>> c.power(Decimal('0'), Decimal('0'))
Decimal('NaN')
>>> c.power(Decimal('3'), Decimal('7'), Decimal('16'))
Decimal('11')
>>> c.power(Decimal('-3'), Decimal('7'), Decimal('16'))
Decimal('-11')
>>> c.power(Decimal('-3'), Decimal('8'), Decimal('16'))
Decimal('1')
>>> c.power(Decimal('3'), Decimal('7'), Decimal('-16'))
Decimal('11')
>>> c.power(Decimal('23E12345'), Decimal('67E189'), Decimal('123456789'))
Decimal('11729830')
>>> c.power(Decimal('-0'), Decimal('17'), Decimal('1729'))
Decimal('-0')
>>> c.power(Decimal('-23'), Decimal('0'), Decimal('65537'))
Decimal('1')
>>> ExtendedContext.power(7, 7)
Decimal('823543')
>>> ExtendedContext.power(Decimal(7), 7)
Decimal('823543')
>>> ExtendedContext.power(7, Decimal(7), 2)
Decimal('1')
Tr� rL r� N)r� r7 r� rw )r0 r- rs r r� r) r) r+ �power s
I z
Context.powerc C s t |dd�}|j|| d�S )a
Returns a value equal to 'a' (rounded), having the exponent of 'b'.
The coefficient of the result is derived from that of the left-hand
operand. It may be rounded using the current rounding setting (if the
exponent is being increased), multiplied by a positive power of ten (if
the exponent is being decreased), or is unchanged (if the exponent is
already equal to that of the right-hand operand).
Unlike other operations, if the length of the coefficient after the
quantize operation would be greater than precision then an Invalid
operation condition is raised. This guarantees that, unless there is
an error condition, the exponent of the result of a quantize is always
equal to that of the right-hand operand.
Also unlike other operations, quantize will never raise Underflow, even
if the result is subnormal and inexact.
>>> ExtendedContext.quantize(Decimal('2.17'), Decimal('0.001'))
Decimal('2.170')
>>> ExtendedContext.quantize(Decimal('2.17'), Decimal('0.01'))
Decimal('2.17')
>>> ExtendedContext.quantize(Decimal('2.17'), Decimal('0.1'))
Decimal('2.2')
>>> ExtendedContext.quantize(Decimal('2.17'), Decimal('1e+0'))
Decimal('2')
>>> ExtendedContext.quantize(Decimal('2.17'), Decimal('1e+1'))
Decimal('0E+1')
>>> ExtendedContext.quantize(Decimal('-Inf'), Decimal('Infinity'))
Decimal('-Infinity')
>>> ExtendedContext.quantize(Decimal('2'), Decimal('Infinity'))
Decimal('NaN')
>>> ExtendedContext.quantize(Decimal('-0.1'), Decimal('1'))
Decimal('-0')
>>> ExtendedContext.quantize(Decimal('-0'), Decimal('1e+5'))
Decimal('-0E+5')
>>> ExtendedContext.quantize(Decimal('+35236450.6'), Decimal('1e-2'))
Decimal('NaN')
>>> ExtendedContext.quantize(Decimal('-35236450.6'), Decimal('1e-2'))
Decimal('NaN')
>>> ExtendedContext.quantize(Decimal('217'), Decimal('1e-1'))
Decimal('217.0')
>>> ExtendedContext.quantize(Decimal('217'), Decimal('1e-0'))
Decimal('217')
>>> ExtendedContext.quantize(Decimal('217'), Decimal('1e+1'))
Decimal('2.2E+2')
>>> ExtendedContext.quantize(Decimal('217'), Decimal('1e+2'))
Decimal('2E+2')
>>> ExtendedContext.quantize(1, 2)
Decimal('1')
>>> ExtendedContext.quantize(Decimal(1), 2)
Decimal('1')
>>> ExtendedContext.quantize(1, Decimal(2))
Decimal('1')
Tr� rL )r� r r� r) r) r+ r e s 7 zContext.quantizec C s t d�S )zkJust returns 10, as this is Decimal, :)
>>> ExtendedContext.radix()
Decimal('10')
r� r� r� r) r) r+ r� � s z
Context.radixc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a Returns the remainder from integer division.
The result is the residue of the dividend after the operation of
calculating integer division as described for divide-integer, rounded
to precision digits if necessary. The sign of the result, if
non-zero, is the same as that of the original dividend.
This operation will fail under the same conditions as integer division
(that is, if integer division on the same two operands would fail, the
remainder cannot be calculated).
>>> ExtendedContext.remainder(Decimal('2.1'), Decimal('3'))
Decimal('2.1')
>>> ExtendedContext.remainder(Decimal('10'), Decimal('3'))
Decimal('1')
>>> ExtendedContext.remainder(Decimal('-10'), Decimal('3'))
Decimal('-1')
>>> ExtendedContext.remainder(Decimal('10.2'), Decimal('1'))
Decimal('0.2')
>>> ExtendedContext.remainder(Decimal('10'), Decimal('0.3'))
Decimal('0.1')
>>> ExtendedContext.remainder(Decimal('3.6'), Decimal('1.3'))
Decimal('1.0')
>>> ExtendedContext.remainder(22, 6)
Decimal('4')
>>> ExtendedContext.remainder(Decimal(22), 6)
Decimal('4')
>>> ExtendedContext.remainder(22, Decimal(6))
Decimal('4')
Tr� rL r� N)r� r� r� rw r� r) r) r+ r� � s
zContext.remainderc C s t |dd�}|j|| d�S )aG Returns to be "a - b * n", where n is the integer nearest the exact
value of "x / b" (if two integers are equally near then the even one
is chosen). If the result is equal to 0 then its sign will be the
sign of a.
This operation will fail under the same conditions as integer division
(that is, if integer division on the same two operands would fail, the
remainder cannot be calculated).
>>> ExtendedContext.remainder_near(Decimal('2.1'), Decimal('3'))
Decimal('-0.9')
>>> ExtendedContext.remainder_near(Decimal('10'), Decimal('6'))
Decimal('-2')
>>> ExtendedContext.remainder_near(Decimal('10'), Decimal('3'))
Decimal('1')
>>> ExtendedContext.remainder_near(Decimal('-10'), Decimal('3'))
Decimal('-1')
>>> ExtendedContext.remainder_near(Decimal('10.2'), Decimal('1'))
Decimal('0.2')
>>> ExtendedContext.remainder_near(Decimal('10'), Decimal('0.3'))
Decimal('0.1')
>>> ExtendedContext.remainder_near(Decimal('3.6'), Decimal('1.3'))
Decimal('-0.3')
>>> ExtendedContext.remainder_near(3, 11)
Decimal('3')
>>> ExtendedContext.remainder_near(Decimal(3), 11)
Decimal('3')
>>> ExtendedContext.remainder_near(3, Decimal(11))
Decimal('3')
Tr� rL )r� r� r� r) r) r+ r� � s zContext.remainder_nearc C s t |dd�}|j|| d�S )aN Returns a rotated copy of a, b times.
The coefficient of the result is a rotated copy of the digits in
the coefficient of the first operand. The number of places of
rotation is taken from the absolute value of the second operand,
with the rotation being to the left if the second operand is
positive or to the right otherwise.
>>> ExtendedContext.rotate(Decimal('34'), Decimal('8'))
Decimal('400000003')
>>> ExtendedContext.rotate(Decimal('12'), Decimal('9'))
Decimal('12')
>>> ExtendedContext.rotate(Decimal('123456789'), Decimal('-2'))
Decimal('891234567')
>>> ExtendedContext.rotate(Decimal('123456789'), Decimal('0'))
Decimal('123456789')
>>> ExtendedContext.rotate(Decimal('123456789'), Decimal('+2'))
Decimal('345678912')
>>> ExtendedContext.rotate(1333333, 1)
Decimal('13333330')
>>> ExtendedContext.rotate(Decimal(1333333), 1)
Decimal('13333330')
>>> ExtendedContext.rotate(1333333, Decimal(1))
Decimal('13333330')
Tr� rL )r� r� r� r) r) r+ r� � s zContext.rotatec C s t |dd�}|�|�S )a� Returns True if the two operands have the same exponent.
The result is never affected by either the sign or the coefficient of
either operand.
>>> ExtendedContext.same_quantum(Decimal('2.17'), Decimal('0.001'))
False
>>> ExtendedContext.same_quantum(Decimal('2.17'), Decimal('0.01'))
True
>>> ExtendedContext.same_quantum(Decimal('2.17'), Decimal('1'))
False
>>> ExtendedContext.same_quantum(Decimal('Inf'), Decimal('-Inf'))
True
>>> ExtendedContext.same_quantum(10000, -1)
True
>>> ExtendedContext.same_quantum(Decimal(10000), -1)
True
>>> ExtendedContext.same_quantum(10000, Decimal(-1))
True
Tr� )r� r> r� r) r) r+ r> s zContext.same_quantumc C s t |dd�}|j|| d�S )a3 Returns the first operand after adding the second value its exp.
>>> ExtendedContext.scaleb(Decimal('7.50'), Decimal('-2'))
Decimal('0.0750')
>>> ExtendedContext.scaleb(Decimal('7.50'), Decimal('0'))
Decimal('7.50')
>>> ExtendedContext.scaleb(Decimal('7.50'), Decimal('3'))
Decimal('7.50E+3')
>>> ExtendedContext.scaleb(1, 4)
Decimal('1E+4')
>>> ExtendedContext.scaleb(Decimal(1), 4)
Decimal('1E+4')
>>> ExtendedContext.scaleb(1, Decimal(4))
Decimal('1E+4')
Tr� rL )r� r� r� r) r) r+ r� $ s zContext.scalebc C s t |dd�}|j|| d�S )a{ Returns a shifted copy of a, b times.
The coefficient of the result is a shifted copy of the digits
in the coefficient of the first operand. The number of places
to shift is taken from the absolute value of the second operand,
with the shift being to the left if the second operand is
positive or to the right otherwise. Digits shifted into the
coefficient are zeros.
>>> ExtendedContext.shift(Decimal('34'), Decimal('8'))
Decimal('400000000')
>>> ExtendedContext.shift(Decimal('12'), Decimal('9'))
Decimal('0')
>>> ExtendedContext.shift(Decimal('123456789'), Decimal('-2'))
Decimal('1234567')
>>> ExtendedContext.shift(Decimal('123456789'), Decimal('0'))
Decimal('123456789')
>>> ExtendedContext.shift(Decimal('123456789'), Decimal('+2'))
Decimal('345678900')
>>> ExtendedContext.shift(88888888, 2)
Decimal('888888800')
>>> ExtendedContext.shift(Decimal(88888888), 2)
Decimal('888888800')
>>> ExtendedContext.shift(88888888, Decimal(2))
Decimal('888888800')
Tr� rL )r� r� r� r) r) r+ r� 7 s z
Context.shiftc C s t |dd�}|j| d�S )a� Square root of a non-negative number to context precision.
If the result must be inexact, it is rounded using the round-half-even
algorithm.
>>> ExtendedContext.sqrt(Decimal('0'))
Decimal('0')
>>> ExtendedContext.sqrt(Decimal('-0'))
Decimal('-0')
>>> ExtendedContext.sqrt(Decimal('0.39'))
Decimal('0.624499800')
>>> ExtendedContext.sqrt(Decimal('100'))
Decimal('10')
>>> ExtendedContext.sqrt(Decimal('1'))
Decimal('1')
>>> ExtendedContext.sqrt(Decimal('1.0'))
Decimal('1.0')
>>> ExtendedContext.sqrt(Decimal('1.00'))
Decimal('1.0')
>>> ExtendedContext.sqrt(Decimal('7'))
Decimal('2.64575131')
>>> ExtendedContext.sqrt(Decimal('10'))
Decimal('3.16227766')
>>> ExtendedContext.sqrt(2)
Decimal('1.41421356')
>>> ExtendedContext.prec
9
Tr� rL )r� rH r� r) r) r+ rH U s z Context.sqrtc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a& Return the difference between the two operands.
>>> ExtendedContext.subtract(Decimal('1.3'), Decimal('1.07'))
Decimal('0.23')
>>> ExtendedContext.subtract(Decimal('1.3'), Decimal('1.30'))
Decimal('0.00')
>>> ExtendedContext.subtract(Decimal('1.3'), Decimal('2.07'))
Decimal('-0.77')
>>> ExtendedContext.subtract(8, 5)
Decimal('3')
>>> ExtendedContext.subtract(Decimal(8), 5)
Decimal('3')
>>> ExtendedContext.subtract(8, Decimal(5))
Decimal('3')
Tr� rL r� N)r� r� r� rw r� r) r) r+ �subtractu s
zContext.subtractc C s t |dd�}|j| d�S )a� Convert to a string, using engineering notation if an exponent is needed.
Engineering notation has an exponent which is a multiple of 3. This
can leave up to 3 digits to the left of the decimal place and may
require the addition of either one or two trailing zeros.
The operation is not affected by the context.
>>> ExtendedContext.to_eng_string(Decimal('123E+1'))
'1.23E+3'
>>> ExtendedContext.to_eng_string(Decimal('123E+3'))
'123E+3'
>>> ExtendedContext.to_eng_string(Decimal('123E-10'))
'12.3E-9'
>>> ExtendedContext.to_eng_string(Decimal('-123E-12'))
'-123E-12'
>>> ExtendedContext.to_eng_string(Decimal('7E-7'))
'700E-9'
>>> ExtendedContext.to_eng_string(Decimal('7E+1'))
'70'
>>> ExtendedContext.to_eng_string(Decimal('0E+1'))
'0.00E+3'
Tr� rL )r� r� r� r) r) r+ r� � s zContext.to_eng_stringc C s t |dd�}|j| d�S )zyConverts a number to a string, using scientific notation.
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Tr� rL )r� r� r� r) r) r+ �
to_sci_string� s zContext.to_sci_stringc C s t |dd�}|j| d�S )ak Rounds to an integer.
When the operand has a negative exponent, the result is the same
as using the quantize() operation using the given operand as the
left-hand-operand, 1E+0 as the right-hand-operand, and the precision
of the operand as the precision setting; Inexact and Rounded flags
are allowed in this operation. The rounding mode is taken from the
context.
>>> ExtendedContext.to_integral_exact(Decimal('2.1'))
Decimal('2')
>>> ExtendedContext.to_integral_exact(Decimal('100'))
Decimal('100')
>>> ExtendedContext.to_integral_exact(Decimal('100.0'))
Decimal('100')
>>> ExtendedContext.to_integral_exact(Decimal('101.5'))
Decimal('102')
>>> ExtendedContext.to_integral_exact(Decimal('-101.5'))
Decimal('-102')
>>> ExtendedContext.to_integral_exact(Decimal('10E+5'))
Decimal('1.0E+6')
>>> ExtendedContext.to_integral_exact(Decimal('7.89E+77'))
Decimal('7.89E+77')
>>> ExtendedContext.to_integral_exact(Decimal('-Inf'))
Decimal('-Infinity')
Tr� rL )r� rB r� r) r) r+ rB � s zContext.to_integral_exactc C s t |dd�}|j| d�S )aL Rounds to an integer.
When the operand has a negative exponent, the result is the same
as using the quantize() operation using the given operand as the
left-hand-operand, 1E+0 as the right-hand-operand, and the precision
of the operand as the precision setting, except that no flags will
be set. The rounding mode is taken from the context.
>>> ExtendedContext.to_integral_value(Decimal('2.1'))
Decimal('2')
>>> ExtendedContext.to_integral_value(Decimal('100'))
Decimal('100')
>>> ExtendedContext.to_integral_value(Decimal('100.0'))
Decimal('100')
>>> ExtendedContext.to_integral_value(Decimal('101.5'))
Decimal('102')
>>> ExtendedContext.to_integral_value(Decimal('-101.5'))
Decimal('-102')
>>> ExtendedContext.to_integral_value(Decimal('10E+5'))
Decimal('1.0E+6')
>>> ExtendedContext.to_integral_value(Decimal('7.89E+77'))
Decimal('7.89E+77')
>>> ExtendedContext.to_integral_value(Decimal('-Inf'))
Decimal('-Infinity')
Tr� rL )r� r r� r) r) r+ r � s zContext.to_integral_value) NNNNNNNNN)N)rR )N)Xr4 r5 r6 r7 r� r� r� r� r� r� r� rN r� rC rM r� ri r� r� r� r� r� r� rD r� r� rm r� r� rM r� rN rJ rR r� r� r� rS r� r� r� rW r rV rW r= r� rY r� rZ r� r[ r\ rf ri rj rx rz r{ ry r� r~ r� r r� r� r� r� r� r; r� r� r� r r� r� r� r� r> r� r� rH r� r� r� rB r r� r) r) r) r+ r s� �
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z_WorkRep.__init__c C s d| j | j| jf S )Nz (%r, %r, %r)r� r� r) r) r+ r� s z_WorkRep.__repr__)N)r4 r5 r6 r� r� r� r) r) r) r+ rn � s
rn c C s� | j |j k r|}| }n| }|}tt|j��}tt|j��}|j td|| d � }||j d |k rpd|_||_ | jd|j |j 9 _|j |_ | |fS )zcNormalizes op1, op2 to have the same exp and length of coefficient.
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r� r^ r. r� )rW rk re rV r� )r� r� rF Ztmpr� Ztmp_lenZ other_lenrW r) r) r+ r� s r� c C sb | dkr dS |dkr | d| S t t| ��}t|�t|�d�� }|| k rPdS | d| S dS )a Given integers n and e, return n * 10**e if it's an integer, else None.
The computation is designed to avoid computing large powers of 10
unnecessarily.
>>> _decimal_lshift_exact(3, 4)
30000
>>> _decimal_lshift_exact(300, -999999999) # returns None
r& r� rR N)re rm rk �rstrip)r9 r� Zstr_nZval_nr) r) r+ r# ( s r# c C sB | dks|dkrt d��d}||kr>||| | d? }}q |S )z�Closest integer to the square root of the positive integer n. a is
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r& z3Both arguments to _sqrt_nearest should be positive.r. )rq )r9 r- rs r) r) r+ �
_sqrt_nearest= s r� c C s2 d|> | |? }}|d| |d @ |d@ |k S )z�Given an integer x and a nonnegative integer shift, return closest
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r. r^ r) )r& r� rs r� r) r) r+ �_rshift_nearestL s r� c C s& t | |�\}}|d| |d@ |k S )zaClosest integer to a/b, a and b positive integers; rounds to even
in the case of a tie.
r^ r. )r� )r- rs r� r� r) r) r+ � _div_nearestT s r� r c C s� | | }d}||kr(t |�|| > |ksD||krxt |�|| ? |krxt|| d> |t||t||� |� �}|d7 }q tdtt|�� d| � }t||�}t||�}t|d dd�D ] }t||�t|| |� }q�t|| |�S )a� Integer approximation to M*log(x/M), with absolute error boundable
in terms only of x/M.
Given positive integers x and M, return an integer approximation to
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between the approximation and the exact result is at most 22. For
L = 8 and 1.0 <= x/M <= 10.0 the difference is at most 15. In
both cases these are upper bounds on the error; it will usually be
much smaller.r& r. ���r\ r� )rm r� r� r� rV rk re r ) r& �M�Lr) �R�TZyshift�wr� r) r) r+ �_ilog\ s" �� �
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rF r� r% rG r� r� r� �log_dZlog_10Z log_tenpowerr) r) r+ rh � s
rh c C s� |d7 }t t| ��}|| || dk }|dkrr|| | }|dkrR| d| 9 } nt| d| �} t| d| �}nd}|r�t tt|���d }|| dkr�t|t|| � d| �}q�d}nd}t|| d�S )z�Given integers c, e and p with c > 0, compute an integer
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� �S ) ztGiven an integer p >= 0, return floor(10**p)*log(10).
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r& zp should be nonnegativer\ r� r^ r! NrR r� r. )rq rk r} re r� r� r� rV )r0 r% r6 r� r} r) r) r+ � getdigits� s
z_Log10Memoize.getdigitsN)r4 r5 r6 r7 r� r� r) r) r) r+ r� � s r� c C s� t | |> | �}tdtt|�� d| � }t| |�}||> }t|d dd�D ]}t| || || �}qPt|d dd�D ]"}||d > }t||| |�}q||| S )z�Given integers x and M, M > 0, such that x/M is small in absolute
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In other words, d*10**f is an approximation to exp(c*10**e) with p
digits of precision, and with an error in d of at most 1. This is
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fS )a5 Given integers xc, xe, yc and ye representing Decimals x = xc*10**xe and
y = yc*10**ye, compute x**y. Returns a pair of integers (c, e) such that:
10**(p-1) <= c <= 10**p, and
(c-1)*10**e < x**y < (c+1)*10**e
in other words, c*10**e is an approximation to x**y with p digits
of precision, and with an error in c of at most 1. (This is
almost, but not quite, the same as the error being < 1ulp: when c
== 10**(p-1) we can only guarantee error < 10ulp.)
We assume that: x is positive and not equal to 1, and y is nonzero.
r. r& r� )rk re rm rd r� rT ) r' r( r* r+ r% rs Zlxcr� Zpcr� rW r) r) r+ r1 H s
r1 r! �F �5 �( � r] � r� r~ ) r� �2�3�4�5�6�7�8rD c C s0 | dkrt d��t| �}dt|� ||d S )z@Compute a lower bound for 100*log10(c) for a positive integer c.r& z0The argument to _log10_lb should be nonnegative.r! )rq re rk )rF Z
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r� c C s� t |t�r| |fS t |tj�rR| jsDt| jtt| j �|j
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�rr|jdkrr|j}t |t�r�t� }|r�d|jt< n |�td� | t�|�fS ttfS )z�Given a Decimal instance self and a Python object other, return
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r& r. ra )rd r �_numbersZRationalrQ r: r; re rV r< � denominatorrP � numeratorZComplexr� r� ru r r4 r ri rv r� )r0 r� r� r1 r) r) r+ r� � s(
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|
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c C s� t �| �}|dkr td| ��|�� }|d }|d }|d dk |d< |d rv|dk rbtd| ��|dk rvtd| ��|p|d|d< |p�d |d< |d
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fill: fill character to pad field to minimum width
align: alignment type, either '<', '>', '=' or '^'
sign: either '+', '-' or ' '
minimumwidth: nonnegative integer giving minimum width
zeropad: boolean, indicating whether to pad with zeros
thousands_sep: string to use as thousands separator, or ''
grouping: grouping for thousands separators, in format
used by localeconv
decimal_point: string to use for decimal point
precision: nonnegative integer giving precision, or None
type: one of the characters 'eEfFgG%', or None
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r r r �<r �=�^r^ Nz Unrecognised alignment field)rk rq ) rC r� r� r r Zpaddingr r� Zhalfr) r) r+ r� m s "r� c C sp ddl m}m} | sg S | d dkrJt| �dkrJ|| dd� || d ��S | d tjkrd| dd� S td��dS )zyConvert a localeconv-style grouping into a (possibly infinite)
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r& )�chain�repeatr� r^ Nr� z unrecognised format for grouping)� itertoolsr r rk r �CHAR_MAXrq )r r r r) r) r+ �_group_lengths� s
r c C s� |d }|d }g }t |�D ]�}|dkr0td��ttt| �|d�|�}|�d|t| � | | d� � | d| � } ||8 }| s�|dkr� q�|t|�8 }q tt| �|d�}|�d|t| � | | d� � |�t|��S )an Insert thousands separators into a digit string.
spec is a dictionary whose keys should include 'thousands_sep' and
'grouping'; typically it's the result of parsing the format
specifier using _parse_format_specifier.
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result, which will be padded on the left with zeros if necessary.
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'r:bz2' open for reading with bzip2 compression
'r:xz' open for reading with lzma compression
'a' or 'a:' open for appending, creating the file if necessary
'w' or 'w:' open for writing without compression
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'w:bz2' open for writing with bzip2 compression
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'r|*' open a stream of tar blocks with transparent compression
'r|' open an uncompressed stream of tar blocks for reading
'r|gz' open a gzip compressed stream of tar blocks
'r|bz2' open a bzip2 compressed stream of tar blocks
'r|xz' open an lzma compressed stream of tar blocks
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'w|gz' open a gzip compressed stream for writing
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This is an implementation of decimal floating point arithmetic based on
the General Decimal Arithmetic Specification:
http://speleotrove.com/decimal/decarith.html
and IEEE standard 854-1987:
http://en.wikipedia.org/wiki/IEEE_854-1987
Decimal floating point has finite precision with arbitrarily large bounds.
The purpose of this module is to support arithmetic using familiar
"schoolhouse" rules and to avoid some of the tricky representation
issues associated with binary floating point. The package is especially
useful for financial applications or for contexts where users have
expectations that are at odds with binary floating point (for instance,
in binary floating point, 1.00 % 0.1 gives 0.09999999999999995 instead
of 0.0; Decimal('1.00') % Decimal('0.1') returns the expected
Decimal('0.00')).
Here are some examples of using the decimal module:
>>> from decimal import *
>>> setcontext(ExtendedContext)
>>> Decimal(0)
Decimal('0')
>>> Decimal('1')
Decimal('1')
>>> Decimal('-.0123')
Decimal('-0.0123')
>>> Decimal(123456)
Decimal('123456')
>>> Decimal('123.45e12345678')
Decimal('1.2345E+12345680')
>>> Decimal('1.33') + Decimal('1.27')
Decimal('2.60')
>>> Decimal('12.34') + Decimal('3.87') - Decimal('18.41')
Decimal('-2.20')
>>> dig = Decimal(1)
>>> print(dig / Decimal(3))
0.333333333
>>> getcontext().prec = 18
>>> print(dig / Decimal(3))
0.333333333333333333
>>> print(dig.sqrt())
1
>>> print(Decimal(3).sqrt())
1.73205080756887729
>>> print(Decimal(3) ** 123)
4.85192780976896427E+58
>>> inf = Decimal(1) / Decimal(0)
>>> print(inf)
Infinity
>>> neginf = Decimal(-1) / Decimal(0)
>>> print(neginf)
-Infinity
>>> print(neginf + inf)
NaN
>>> print(neginf * inf)
-Infinity
>>> print(dig / 0)
Infinity
>>> getcontext().traps[DivisionByZero] = 1
>>> print(dig / 0)
Traceback (most recent call last):
...
...
...
decimal.DivisionByZero: x / 0
>>> c = Context()
>>> c.traps[InvalidOperation] = 0
>>> print(c.flags[InvalidOperation])
0
>>> c.divide(Decimal(0), Decimal(0))
Decimal('NaN')
>>> c.traps[InvalidOperation] = 1
>>> print(c.flags[InvalidOperation])
1
>>> c.flags[InvalidOperation] = 0
>>> print(c.flags[InvalidOperation])
0
>>> print(c.divide(Decimal(0), Decimal(0)))
Traceback (most recent call last):
...
...
...
decimal.InvalidOperation: 0 / 0
>>> print(c.flags[InvalidOperation])
1
>>> c.flags[InvalidOperation] = 0
>>> c.traps[InvalidOperation] = 0
>>> print(c.divide(Decimal(0), Decimal(0)))
NaN
>>> print(c.flags[InvalidOperation])
1
>>>
�Decimal�Context� DecimalTuple�DefaultContext� BasicContext�ExtendedContext�DecimalException�Clamped�InvalidOperation�DivisionByZero�Inexact�Rounded� Subnormal�Overflow� Underflow�FloatOperation�DivisionImpossible�InvalidContext�ConversionSyntax�DivisionUndefined�
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Used exceptions derive from this.
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called if the others are present. This isn't actually used for
anything, though.
handle -- Called when context._raise_error is called and the
trap_enabler is not set. First argument is self, second is the
context. More arguments can be given, those being after
the explanation in _raise_error (For example,
context._raise_error(NewError, '(-x)!', self._sign) would
call NewError().handle(context, self._sign).)
To define a new exception, it should be sufficient to have it derive
from DecimalException.
c G s d S r( r) ��self�contextr* r) r) r+ �handle� s zDecimalException.handleN��__name__�
__module__� __qualname__�__doc__r2 r) r) r) r+ r � s c @ s e Zd ZdZdS )r a) Exponent of a 0 changed to fit bounds.
This occurs and signals clamped if the exponent of a result has been
altered in order to fit the constraints of a specific concrete
representation. This may occur when the exponent of a zero result would
be outside the bounds of a representation, or when a large normal
number would have an encoded exponent that cannot be represented. In
this latter case, the exponent is reduced to fit and the corresponding
number of zero digits are appended to the coefficient ("fold-down").
N�r4 r5 r6 r7 r) r) r) r+ r � s c @ s e Zd ZdZdd� ZdS )r a0 An invalid operation was performed.
Various bad things cause this:
Something creates a signaling NaN
-INF + INF
0 * (+-)INF
(+-)INF / (+-)INF
x % 0
(+-)INF % x
x._rescale( non-integer )
sqrt(-x) , x > 0
0 ** 0
x ** (non-integer)
x ** (+-)INF
An operand is invalid
The result of the operation after these is a quiet positive NaN,
except when the cause is a signaling NaN, in which case the result is
also a quiet NaN, but with the original sign, and an optional
diagnostic information.
c G s, |r(t |d j|d jdd�}|�|�S tS )Nr& �nT)�_dec_from_triple�_sign�_int�_fix_nan�_NaN)r0 r1 r* �ansr) r) r+ r2 � s
zInvalidOperation.handleNr3 r) r) r) r+ r � s c @ s e Zd ZdZdd� ZdS )r z�Trying to convert badly formed string.
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converted to a number and it does not conform to the numeric string
syntax. The result is [0,qNaN].
c G s t S r( �r> r/ r) r) r+ r2 s zConversionSyntax.handleNr3 r) r) r) r+ r s c @ s e Zd ZdZdd� ZdS )r
a� Division by 0.
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by zero was attempted (during a divide-integer or divide operation, or a
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not zero.
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or of the signs of the operands for divide, or is 1 for an odd power of
-0, for power.
c G s t | S r( )�_SignedInfinity�r0 r1 �signr* r) r) r+ r2 s zDivisionByZero.handleNr3 r) r) r) r+ r
s c @ s e Zd ZdZdd� ZdS )r z�Cannot perform the division adequately.
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divide-integer or remainder operation had too many digits (would be
longer than precision). The result is [0,qNaN].
c G s t S r( r@ r/ r) r) r+ r2 " s zDivisionImpossible.handleNr3 r) r) r) r+ r s c @ s e Zd ZdZdd� ZdS )r z�Undefined result of division.
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c G s t S r( r@ r/ r) r) r+ r2 - s zDivisionUndefined.handleNr3 r) r) r) r+ r % s c @ s e Zd ZdZdS )r a� Had to round, losing information.
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not exact (that is, it needed to be rounded and any discarded digits
were non-zero), or if an overflow or underflow condition occurs. The
result in all cases is unchanged.
The inexact signal may be tested (or trapped) to determine if a given
operation (or sequence of operations) was inexact.
Nr8 r) r) r) r+ r 0 s c @ s e Zd ZdZdd� ZdS )r a� Invalid context. Unknown rounding, for example.
This occurs and signals invalid-operation if an invalid context was
detected during an operation. This can occur if contexts are not checked
on creation and either the precision exceeds the capability of the
underlying concrete representation or an unknown or unsupported rounding
was specified. These aspects of the context need only be checked when
the values are required to be used. The result is [0,qNaN].
c G s t S r( r@ r/ r) r) r+ r2 G s zInvalidContext.handleNr3 r) r) r) r+ r < s
c @ s e Zd ZdZdS )r a� Number got rounded (not necessarily changed during rounding).
This occurs and signals rounded whenever the result of an operation is
rounded (that is, some zero or non-zero digits were discarded from the
coefficient), or if an overflow or underflow condition occurs. The
result in all cases is unchanged.
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operation (or sequence of operations) caused a loss of precision.
Nr8 r) r) r) r+ r J s c @ s e Zd ZdZdS )r
a� Exponent < Emin before rounding.
This occurs and signals subnormal whenever the result of a conversion or
operation is subnormal (that is, its adjusted exponent is less than
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or operation (or sequence of operations) yielded a subnormal result.
Nr8 r) r) r) r+ r
V s c @ s e Zd ZdZdd� ZdS )r a Numerical overflow.
This occurs and signals overflow if the adjusted exponent of a result
(from a conversion or from an operation that is not an attempt to divide
by zero), after rounding, would be greater than the largest value that
can be handled by the implementation (the value Emax).
The result depends on the rounding mode:
For round-half-up and round-half-even (and for round-half-down and
round-up, if implemented), the result of the operation is [sign,inf],
where sign is the sign of the intermediate result. For round-down, the
result is the largest finite number that can be represented in the
current precision, with the sign of the intermediate result. For
round-ceiling, the result is the same as for round-down if the sign of
the intermediate result is 1, or is [0,inf] otherwise. For round-floor,
the result is the same as for round-down if the sign of the intermediate
result is 0, or is [1,inf] otherwise. In all cases, Inexact and Rounded
will also be raised.
c G s� |j ttttfkrt| S |dkrR|j tkr4t| S t|d|j |j |j d �S |dkr�|j t
krlt| S t|d|j |j |j d �S d S )Nr& �9r. ) �roundingr r r r rA r r: �prec�Emaxr rB r) r) r+ r2 w s" �
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�zOverflow.handleNr3 r) r) r) r+ r a s c @ s e Zd ZdZdS )r ax Numerical underflow with result rounded to 0.
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adjusted exponent of the result would be smaller (more negative) than
the smallest value that can be handled by the implementation (the value
Emin). That is, the result is both inexact and subnormal.
The result after an underflow will be a subnormal number rounded, if
necessary, so that its exponent is not less than Etiny. This may result
in 0 with the sign of the intermediate result and an exponent of Etiny.
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Nr8 r) r) r) r+ r � s c @ s e Zd ZdZdS )r a� Enable stricter semantics for mixing floats and Decimals.
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permitted in the Decimal() constructor, context.create_decimal() and
all comparison operators. Both conversion and comparisons are exact.
Any occurrence of a mixed operation is silently recorded by setting
FloatOperation in the context flags. Explicit conversions with
Decimal.from_float() or context.create_decimal_from_float() do not
set the flag.
Otherwise (the signal is trapped), only equality comparisons and explicit
conversions are silent. All other mixed operations raise FloatOperation.
Nr8 r) r) r) r+ r � s Zdecimal_contextc C s8 z
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r2 t� } t �| � | Y S X dS )z�Returns this thread's context.
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c C s, | t ttfkr | �� } | �� t�| � dS )z%Set this thread's context to context.N)r r r �copy� clear_flagsrH rK rL r) r) r+ r � s c C s | dkrt � } t| �S )ab Return a context manager for a copy of the supplied context
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in a with statement:
def sin(x):
with localcontext() as ctx:
ctx.prec += 2
# Rest of sin calculation algorithm
# uses a precision 2 greater than normal
return +s # Convert result to normal precision
def sin(x):
with localcontext(ExtendedContext):
# Rest of sin calculation algorithm
# uses the Extended Context from the
# General Decimal Arithmetic Specification
return +s # Convert result to normal context
>>> setcontext(DefaultContext)
>>> print(getcontext().prec)
28
>>> with localcontext():
... ctx = getcontext()
... ctx.prec += 2
... print(ctx.prec)
...
30
>>> with localcontext(ExtendedContext):
... print(getcontext().prec)
...
9
>>> print(getcontext().prec)
28
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>>> Decimal('3.14') # string input
Decimal('3.14')
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Decimal('3.14')
>>> Decimal(314) # int
Decimal('314')
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Decimal('314')
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Decimal('3.14')
�_� Nz Invalid literal for Decimal: %rrC �-r. r& �intZfrac�exprR F�diag�signal�Nr9 �FT� ztInvalid tuple size in creation of Decimal from list or tuple. The list or tuple should have exactly three elements.�r& r. z|Invalid sign. The first value in the tuple should be an integer; either 0 for a positive number or 1 for a negative number.� � zTThe second value in the tuple must be composed of integers in the range 0 through 9.�r9 rZ zUThe third value in the tuple must be an integer, or one of the strings 'F', 'n', 'N'.�;strict semantics for mixing floats and Decimals are enabledz Cannot convert %r to Decimal)!�object�__new__�
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||| �}| tkr�|S | |�S dS )a. Converts a float to a decimal number, exactly.
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value is stored as the nearest representable value which is
0x1.999999999999ap-4. The exact equivalent of the value in decimal
is 0.1000000000000000055511151231257827021181583404541015625.
>>> Decimal.from_float(0.1)
Decimal('0.1000000000000000055511151231257827021181583404541015625')
>>> Decimal.from_float(float('nan'))
Decimal('NaN')
>>> Decimal.from_float(float('inf'))
Decimal('Infinity')
>>> Decimal.from_float(-float('inf'))
Decimal('-Infinity')
>>> Decimal.from_float(-0.0)
Decimal('-0')
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r9 r. rZ r^ r& )rQ rP )r0 rW r) r) r+ �_isnan� s zDecimal._isnanc C s | j dkr| jrdS dS dS )zyReturns whether the number is infinite
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compare_signal, __le__, __lt__, __ge__, __gt__.
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rR �rQ r< r� r) r) r+ �__bool__* s zDecimal.__bool__c C s | j s |j r8| �� }|�� }||kr(dS ||k r4dS dS | sP|sDdS d|j S |s^d| j S |j| jk rndS | j|jk r~dS | �� }|�� }||kr�| jd| j|j }|jd|j| j }||kr�dS ||k r�d| j S d| j S n ||k�rd| j S d| j S dS )z�Compare the two non-NaN decimal instances self and other.
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T��raiseit)�_convert_otherrQ r� r r� r� r) r) r+ �compare� s zDecimal.comparec C s� | j r4| �� rtd��n | �� r$tS | jr0t S tS | jdkrNtd| jt �}ntt
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or NaN, raises OverflowError or ValueError respectively.
>>> Decimal('3.14').as_integer_ratio()
(157, 50)
>>> Decimal('-123e5').as_integer_ratio()
(-12300000, 1)
>>> Decimal('0.00').as_integer_ratio()
(0, 1)
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>>> round(Decimal('123.456'))
123
>>> round(Decimal('-456.789'))
-457
>>> round(Decimal('-3.0'))
-3
>>> round(Decimal('2.5'))
2
>>> round(Decimal('3.5'))
4
>>> round(Decimal('Inf'))
Traceback (most recent call last):
...
OverflowError: cannot round an infinity
>>> round(Decimal('NaN'))
Traceback (most recent call last):
...
ValueError: cannot round a NaN
If a second argument n is supplied, self is rounded to n
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For an integer n, round(self, -n) is exactly equivalent to
self.quantize(Decimal('1En')).
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Decimal('123')
>>> round(Decimal('123.456'), 2)
Decimal('123.46')
>>> round(Decimal('123.456'), -2)
Decimal('1E+2')
>>> round(Decimal('-Infinity'), 37)
Decimal('NaN')
>>> round(Decimal('sNaN123'), 0)
Decimal('NaN123')
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where p is the context precision.
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flag is raised.
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efficiently. It is always exact.
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� |� t � |S )aV Rounds to a nearby integer.
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zDecimal.compare_signalc C s` t |dd�}| jr |js tS | js,|jr,tS | j}| �� }|�� }|sL|�r||kr�t| j�| jf}t|j�|jf}||k r�|r�tS tS ||kr�|r�tS tS tS |r�|dkr�tS |dkr�tS |dkr�tS |dkr�tS n2|dkr�tS |dkr�tS |dkr�tS |dk�rtS | |k �rtS | |k�r$tS | j|jk �r@|�r<tS tS | j|jk�r\|�rXtS tS tS )z�Compares self to other using the abstract representations.
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zDecimal.compare_totalc C s& t |dd�}| �� }|�� }|�|�S )z�Compares self to other using abstract repr., ignoring sign.
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Tr� )r� r� rJ )r0 r� r1 r� �or) r) r+ �compare_total_mag� s zDecimal.compare_total_magc C s t d| j| j| j�S )z'Returns a copy with the sign set to 0. r& )r: r< rP rQ r� r) r) r+ r� � s zDecimal.copy_absc C s2 | j rtd| j| j| j�S td| j| j| j�S dS )z&Returns a copy with the sign inverted.r& r. N)r; r: r< rP rQ r� r) r) r+ r� � s zDecimal.copy_negatec C s" t |dd�}t|j| j| j| j�S )z$Returns self with the sign of other.Tr� )r� r: r; r< rP rQ r� r) r) r+ � copy_sign� s
�zDecimal.copy_signc C s� |dkrt � }| j|d�}|r"|S | �� dkr2tS | s:tS | �� dkrNt| �S |j}| �� }| jdkr�|t t
|j d d ��kr�t dd|j d �}�n0| jdkr�|t t
|�
� d d ��kr�t dd|�
� d �}n�| jdk�r || k �r t ddd|d d | �}n�| jdk�rD|| d k �rDt dd |d | d �}n�t| �}|j|j }}|jdk�rl| }d}t|||| �\} }
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�}|�� }|�t�} |�|�}| |_|S ) zReturns e ** self.NrL r� r. r& r\ r� rR rD r~ r� )r r� r� rP r/ r rF r� r; rk re rG r: r� rn rV rW rC �_dexprC rD r r� rE ) r0 r1 r? r% �adjrE rF r� r6 r� rW rE r) r) r+ rW � sH $( "
z Decimal.expc C s dS )z�Return True if self is canonical; otherwise return False.
Currently, the encoding of a Decimal instance is always
canonical, so this method returns True for any Decimal.
Tr) r� r) r) r+ � is_canonical' s zDecimal.is_canonicalc C s | j S )z�Return True if self is finite; otherwise return False.
A Decimal instance is considered finite if it is neither
infinite nor a NaN.
)rQ r� r) r) r+ � is_finite/ s zDecimal.is_finitec C s
| j dkS )z8Return True if self is infinite; otherwise return False.r[ �rP r� r) r) r+ r= 7 s zDecimal.is_infinitec C s
| j dkS )z>Return True if self is a qNaN or sNaN; otherwise return False.r` rX r� r) r) r+ r� ; s zDecimal.is_nanc C s* | j s
| sdS |dkr t� }|j| �� kS )z?Return True if self is a normal number; otherwise return False.FN)rQ r r< r� r� r) r) r+ � is_normal? s
zDecimal.is_normalc C s
| j dkS )z;Return True if self is a quiet NaN; otherwise return False.r9 rX r� r) r) r+ r� G s zDecimal.is_qnanc C s
| j dkS )z8Return True if self is negative; otherwise return False.r. )r; r� r) r) r+ � is_signedK s zDecimal.is_signedc C s
| j dkS )z?Return True if self is a signaling NaN; otherwise return False.rZ rX r� r) r) r+ r� O s zDecimal.is_snanc C s* | j s
| sdS |dkr t� }| �� |jk S )z9Return True if self is subnormal; otherwise return False.FN)rQ r r� r< r� r) r) r+ � is_subnormalS s
zDecimal.is_subnormalc C s | j o| jdkS )z6Return True if self is a zero; otherwise return False.rR r� r� r) r) r+ �is_zero[ s zDecimal.is_zeroc C s� | j t| j� d }|dkr4tt|d d ��d S |dkrXttd| d d ��d S t| �}|j|j }}|dkr�t|d| �}t|�}t|�t|� ||k S |ttd| | �� d S )z�Compute a lower bound for the adjusted exponent of self.ln().
In other words, compute r such that self.ln() >= 10**r. Assumes
that self is finite and positive and that self != 1.
r. � r� r� r� r& �rP rk r< re rn rV rW �r0 rU rE rF r� �numZdenr) r) r+ �
_ln_exp_bound_ s zDecimal._ln_exp_boundc
C s |dkrt � }| j|d�}|r"|S | s*tS | �� dkr:tS | tkrFtS | jdkr\|�t d�S t
| �}|j |j }}|j
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z/Returns the natural (base e) logarithm of self.NrL r. zln of a negative valuer^ r~ r� r\ r& )r r� �_NegativeInfinityr� � _Infinityr/ rP r; ri r rn rV rW rF ra �_dlogrk re rm r: rC rD r r� rE �
r0 r1 r? rE rF r� r% r? r� rE r) r) r+ �lnx s:
� $
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Decimal.lnc C s� | j t| j� d }|dkr,tt|��d S |dkrHttd| ��d S t| �}|j|j }}|dkr�t|d| �}td| �}t|�t|� ||k d S td| | �}t|�| |dk d S ) z�Compute a lower bound for the adjusted exponent of self.log10().
In other words, find r such that self.log10() >= 10**r.
Assumes that self is finite and positive and that self != 1.
r. r� r� r& r� �� r^ Z231r^ r_ r) r) r+ r0 � s zDecimal._log10_exp_boundc
C sF |dkrt � }| j|d�}|r"|S | s*tS | �� dkr:tS | jdkrP|�td�S | jd dkr�| jdd� dt | j�d kr�t
| j t | j� d �}n�t | �}|j
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|dk �tt|��| �}|�� }|�t�} |�|�}| |_|S ) z&Returns the base 10 logarithm of self.NrL r. zlog10 of a negative valuer& r� rR r^ r~ r� r\ )r r� rb r� rc r; ri r r< rk r rP rn rV rW rF r0 �_dlog10re rm r: rC rD r r� rE re r) r) r+ �log10� s:
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Decimal.log10c C sV | j |d�}|r|S |dkr"t� }| �� r.tS | s@|�tdd�S t| �� �}|�|�S )aM Returns the exponent of the magnitude of self's MSD.
The result is the integer which is the exponent of the magnitude
of the most significant digit of self (as though it were truncated
to a single digit while maintaining the value of that digit and
without limiting the resulting exponent).
rL Nzlogb(0)r. ) r� r r� rc ri r
r r� r� r� r) r) r+ �logb� s z Decimal.logbc C s6 | j dks| jdkrdS | jD ]}|dkr dS q dS )z�Return True if self is a logical operand.
For being logical, it must be a finite number with a sign of 0,
an exponent of 0, and a coefficient whose digits must all be
either 0 or 1.
r& FZ01T)r; rP r< )r0 �digr) r) r+ �
_islogical
s
zDecimal._islogicalc C s� |j t|� }|dkr$d| | }n|dk r<||j d � }|j t|� }|dkr`d| | }n|dk rx||j d � }||fS )Nr& rR )rF rk )r0 r1 �opa�opbZdifr) r) r+ �
_fill_logical'
s zDecimal._fill_logicalc C sz |dkrt � }t|dd�}| �� r*|�� s4|�t�S | �|| j|j�\}}d�dd� t||�D ��}t d|�
d�ptdd�S ) z;Applies an 'and' operation between self and other's digits.NTr� rT c S s$ g | ] \}}t t|�t|�@ ��qS r) �re rV ��.0r- �br) r) r+ �
<listcomp>B
s z'Decimal.logical_and.<locals>.<listcomp>r& rR � r r� rl ri r ro r< rs �zipr: rl �r0 r� r1 rm rn r� r) r) r+ � logical_and4
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zDecimal.logical_andc C s( |dkrt � }| �tdd|j d�|�S )zInvert all its digits.Nr& r� )r � logical_xorr: rF r� r) r) r+ �logical_invertE
s
�zDecimal.logical_invertc C sz |dkrt � }t|dd�}| �� r*|�� s4|�t�S | �|| j|j�\}}d�dd� t||�D ��}t d|�
d�ptdd�S ) z:Applies an 'or' operation between self and other's digits.NTr� rT c S s$ g | ] \}}t t|�t|�B ��qS r) rp rq r) r) r+ rt Z
s z&Decimal.logical_or.<locals>.<listcomp>r& rR ru rw r) r) r+ �
logical_orL
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zDecimal.logical_orc C sz |dkrt � }t|dd�}| �� r*|�� s4|�t�S | �|| j|j�\}}d�dd� t||�D ��}t d|�
d�ptdd�S ) z;Applies an 'xor' operation between self and other's digits.NTr� rT c S s$ g | ] \}}t t|�t|�A ��qS r) rp rq r) r) r+ rt k
s z'Decimal.logical_xor.<locals>.<listcomp>r& rR ru rw r) r) r+ ry ]
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zDecimal.logical_xorc C s� t |dd�}|dkrt� }| js&|jr~| �� }|�� }|s>|r~|dkrX|dkrX| �|�S |dkrr|dkrr|�|�S | �||�S | �� �|�� �}|dkr�| �|�}|dkr�|}n| }|�|�S �z8Compares the values numerically with their sign ignored.Tr� Nr. r& r� � r� r rQ r� r� r� r� r� rJ rK r) r) r+ �max_magn
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zDecimal.max_magc C s� t |dd�}|dkrt� }| js&|jr~| �� }|�� }|s>|r~|dkrX|dkrX| �|�S |dkrr|dkrr|�|�S | �||�S | �� �|�� �}|dkr�| �|�}|dkr�| }n|}|�|�S r| r} rK r) r) r+ �min_mag�
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zDecimal.min_magc C s� |dkrt � }| j|d�}|r"|S | �� dkr2tS | �� dkrTtdd|j |�� �S |�� }|�t � |�
� | � |�}|| kr�|S | � tdd|�
� d �|�S )z=Returns the largest representable number smaller than itself.NrL r� r. r& rD r� )r r� r� rb r: rF r� rM rD r �_ignore_all_flagsr� r� r� �r0 r1 r? Znew_selfr) r) r+ �
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�zDecimal.next_minusc C s� |dkrt � }| j|d�}|r"|S | �� dkr2tS | �� dkrTtdd|j |�� �S |�� }|�t � |�
� | � |�}|| kr�|S | � tdd|�
� d �|�S )z=Returns the smallest representable number larger than itself.NrL r. r� rD r& r� )r r� r� rc r: rF r� rM rD r r� r� r� r� r� r) r) r+ � next_plus�
s$
�zDecimal.next_plusc C s� t |dd�}|dkrt� }| �||�}|r.|S | �|�}|dkrJ| �|�S |dkr^| �|�}n
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� |�t � |�t � nD|�
� |jk r�|�t� |�t� |�t � |�t � |s�|�t� |S )a� Returns the number closest to self, in the direction towards other.
The result is the closest representable number to self
(excluding self) that is in the direction towards other,
unless both have the same value. If the two operands are
numerically equal, then the result is a copy of self with the
sign set to be the same as the sign of other.
Tr� Nr& r� z Infinite result from next_toward)r� r r� r� rS r� r� r� ri r r; r r r� r< r r
r )r0 r� r1 r? Z
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zDecimal.next_towardc C s� | � � r dS | �� rdS | �� }|dkr,dS |dkr8dS | �� rN| jrJdS dS |d kr\t� }| j|d
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S dS d S )a Returns an indication of the class of self.
The class is one of the following strings:
sNaN
NaN
-Infinity
-Normal
-Subnormal
-Zero
+Zero
+Subnormal
+Normal
+Infinity
r� r� r. z +Infinityr� z -Infinityz-Zeroz+ZeroNrL z
-Subnormalz
+Subnormalz-Normalz+Normal)r� r� r� r\ r; r r[ )r0 r1 �infr) r) r+ � number_class s, zDecimal.number_classc C s t d�S )z'Just returns 10, as this is Decimal, :)r� r� r� r) r) r+ �radix0 s z
Decimal.radixc C s� |dkrt � }t|dd�}| �||�}|r.|S |jdkrB|�t�S |j t|� kr`|jksln |�t�S | �� r|t | �S t|�}| j
}|jt |� }|dkr�d| | }n|dk r�|| d� }||d� |d|� }t | j
|�d�p�d| j�S )z5Returns a rotated copy of self, value-of-other times.NTr� r& rR �r r� r� rP ri r rF rV r� r r< rk r: r; rl )r0 r� r1 r? �torot�rotdig�topadZrotatedr) r) r+ �rotate4 s0
�zDecimal.rotatec C s� |dkrt � }t|dd�}| �||�}|r.|S |jdkrB|�t�S d|j|j }d|j|j }|t|� krz|ks�n |�t�S | � � r�t
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| jt|� �}|�|�}|S )z>Returns self operand after adding the second value to its exp.NTr� r& r� r^ )r r� r� rP ri r rG rF rV r� r r: r; r< r� )r0 r� r1 r? ZliminfZlimsupr� r) r) r+ �scalebU s"
zDecimal.scalebc C s |dkrt � }t|dd�}| �||�}|r.|S |jdkrB|�t�S |j t|� kr`|jksln |�t�S | �� r|t | �S t|�}| j
}|jt |� }|dkr�d| | }n|dk r�|| d� }|dk r�|d|� }n |d| }||j d� }t | j
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Decimal.shiftc C s | j t| �ffS r( )� __class__re r� r) r) r+ �
__reduce__� s zDecimal.__reduce__c C s t | �tkr| S | �t| ��S r( ��typer r� re r� r) r) r+ �__copy__� s zDecimal.__copy__c C s t | �tkr| S | �t| ��S r( r� )r0 Zmemor) r) r+ � __deepcopy__� s zDecimal.__deepcopy__c C sJ |dkrt � }t||d�}| jrXt| j|�}t| �� �}|d dkrL|d7 }t|||�S |d dkrvddg|j |d< |d dkr�t | j| j
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|�S )a| Format a Decimal instance according to the given specifier.
The specifier should be a standard format specifier, with the
form described in PEP 3101. Formatting types 'e', 'E', 'f',
'F', 'g', 'G', 'n' and '%' are supported. If the formatting
type is omitted it defaults to 'g' or 'G', depending on the
value of context.capitals.
N)� _localeconvr� �%�g�Gr^ � precision�eEr. zfF%ZgGr& r� rR rT )r �_parse_format_specifierrQ � _format_signr; re r� �
_format_alignr� r: r< rP rE r@ r� rk �_format_number)r0 Z specifierr1 r� �specrC �bodyrE r� r� r� r{ r| rW r) r) r+ �
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zDecimal.__format__)rR N)NN)N)N)N)N)N)N)FN)N)N)N)TN)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)NN)N)N)NN)N)NN)NN)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)N)NN)�r4 r5 r6 r7 � __slots__rc � classmethodrv r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� r� �__radd__r� r� r� �__rmul__r� r� r� r� r� r� r� r� r� r� r� r� � __trunc__�propertyr� r� r� r� r= r� r� r� r r r r r r �dictr� r
r r r r r. r7 r8 r; r r> r� r@ rB r � to_integralrH r� r� r r r� rM rN rJ rR r� r� rS rW rV rW r= r� rY r� rZ r� r[ r\ ra rf r0 ri rj rl ro rx rz r{ ry r~ r r� r� r� r� r� r� r� r� r� r� r� r� r) r) r) r+ r s
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. * ! 'Fc C s& t �t�}| |_||_||_||_|S )z�Create a decimal instance directly, without any validation,
normalization (e.g. removal of leading zeros) or argument
conversion.
This function is for *internal use only*.
)rb rc r r; r< rP rQ )rC Z coefficientr Zspecialr0 r) r) r+ r: � s
r: c @ s( e Zd ZdZdd� Zdd� Zdd� ZdS ) rO z�Context manager class to support localcontext().
Sets a copy of the supplied context in __enter__() and restores
the previous decimal context in __exit__()
c C s |� � | _d S r( )rM � new_context)r0 r� r) r) r+ �__init__ s z_ContextManager.__init__c C s t � | _t| j� | jS r( )r �
saved_contextr r� r� r) r) r+ � __enter__ s
z_ContextManager.__enter__c C s t | j� d S r( )r r� )r0 �t�v�tbr) r) r+ �__exit__ s z_ContextManager.__exit__N)r4 r5 r6 r7 r� r� r� r) r) r) r+ rO s rO c @ s� e Zd ZdZd�dd�Zdd� Zdd� Zd d
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dd� ZeZd�dd�Zdd � Zd d � Zd d � ZdZd!d"� Zd#d$� Zd%d&� Zd�d(d)�Zd*d+� Zd,d-� Zd.d/� Zd0d1� Z d2d3� Z d4d5� Z d6d7� Z d8d9� Z d:d;� Z!d<d=� Z"d>d?� Z#d@dA� Z$dBdC� Z%dDdE� Z&dFdG� Z'dHdI� Z(dJdK� Z)dLdM� Z*dNdO� Z+dPdQ� Z,dRdS� Z-dTdU� Z.dVdW� Z/dXdY� Z0dZd[� Z1d\d]� Z2d^d_� Z3d`da� Z4dbdc� Z5ddde� Z6dfdg� Z7dhdi� Z8djdk� Z9dldm� Z:dndo� Z;dpdq� Z<drds� Z=dtdu� Z>dvdw� Z?dxdy� Z@dzd{� ZAd|d}� ZBd~d� ZCd�d�� ZDd�d�� ZEd�d�� ZFd�d�� ZGd�d�d��ZHd�d�� ZId�d�� ZJd�d�� ZKd�d�� ZLd�d�� ZMd�d�� ZNd�d�� ZOd�d�� ZPd�d�� ZQd�d�� ZRd�d�� ZSd�d�� ZTd�d�� ZUd�d�� ZVeVZWdS )�r a� Contains the context for a Decimal instance.
Contains:
prec - precision (for use in rounding, division, square roots..)
rounding - rounding type (how you round)
traps - If traps[exception] = 1, then the exception is
raised when it is caused. Otherwise, a value is
substituted in.
flags - When an exception is caused, flags[exception] is set.
(Whether or not the trap_enabler is set)
Should be reset by user of Decimal instance.
Emin - Minimum exponent
Emax - Maximum exponent
capitals - If 1, 1*10^1 is printed as 1E+1.
If 0, printed as 1e1
clamp - If 1, change exponents if too high (Default 0)
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� D ��| _n� | _d S )Nc 3 s | ]}|t |� k�fV qd S r( �rV �rr r� �r3 r) r+ � <genexpr>I s z#Context.__init__.<locals>.<genexpr>r& c 3 s | ]}|t |� k�fV qd S r( r� r� �r4 r) r+ r� P s )r � NameErrorrF rE r< rG r� r� �_ignored_flagsr3 rM rd r� r2 �fromkeysr4 ) r0 rF rE r< rG r� r� r4 r3 r� Zdcr) )r4 r3 r+ r� 0 s.
zContext.__init__c C s� t |t�std| ��|dkr<||kr�td||||f ��nJ|dkrb||k r�td||||f ��n$||k sr||kr�td||||f ��t�| ||�S )Nz%s must be an integer�-infz %s must be in [%s, %d]. got: %sr� z %s must be in [%d, %s]. got: %sz %s must be in [%d, %d]. got %s)rd rV rw rq rb � __setattr__)r0 �namery ZvminZvmaxr) r) r+ �_set_integer_checkT s
zContext._set_integer_checkc C s` t |t�std| ��|D ]}|tkrtd| ��qtD ]}||kr8td| ��q8t�| ||�S )Nz%s must be a signal dictz %s is not a valid signal dict)rd r� rw r2 �KeyErrorrb r� )r0 r� r� �keyr) r) r+ �_set_signal_dictb s
zContext._set_signal_dictc C s� |dkr| � ||dd�S |dkr0| � ||dd�S |dkrH| � ||dd�S |dkr`| � ||dd�S |d krx| � ||dd�S |d
kr�|tkr�td | ��t�| ||�S |d ks�|d
kr�| �||�S |dkr�t�| ||�S td| ��d S )NrF r. r� r< r� r& rG r� r� rE z%s: invalid rounding moder4 r3 r� z.'decimal.Context' object has no attribute '%s')r� �_rounding_modesrw rb r� r� �AttributeError)r0 r� ry r) r) r+ r� m s* �zContext.__setattr__c C s t d| ��d S )Nz%s cannot be deleted)r� )r0 r� r) r) r+ � __delattr__� s zContext.__delattr__c C sN dd� | j �� D �}dd� | j�� D �}| j| j| j| j| j| j| j ||ffS )Nc S s g | ]\}}|r|�qS r) r) �rr Zsigr� r) r) r+ rt � s z&Context.__reduce__.<locals>.<listcomp>c S s g | ]\}}|r|�qS r) r) r� r) r) r+ rt � s )
r4 �itemsr3 r� rF rE r< rG r� r� )r0 r4 r3 r) r) r+ r� � s ��zContext.__reduce__c C s| g }|� dt| � � dd� | j�� D �}|� dd�|� d � dd� | j�� D �}|� dd�|� d � d�|�d S )
zShow the current context.zrContext(prec=%(prec)d, rounding=%(rounding)s, Emin=%(Emin)d, Emax=%(Emax)d, capitals=%(capitals)d, clamp=%(clamp)dc S s g | ]\}}|r|j �qS r) �r4 )rr r� r� r) r) r+ rt � s z$Context.__repr__.<locals>.<listcomp>zflags=[z, �]c S s g | ]\}}|r|j �qS r) r� )rr r� r� r) r) r+ rt � s ztraps=[�))rr �varsr4 r� rs r3 )r0 r� �namesr) r) r+ r� � s �zContext.__repr__c C s | j D ]}d| j |< qdS )zReset all flags to zeror& Nr� �r0 �flagr) r) r+ rN � s
zContext.clear_flagsc C s | j D ]}d| j |< qdS )zReset all traps to zeror& Nr� r� r) r) r+ � clear_traps� s
zContext.clear_trapsc
C s. t | j| j| j| j| j| j| j| j| j � }|S )z!Returns a shallow copy from self.)
r rF rE r< rG r� r� r4 r3 r� �r0 Zncr) r) r+ rC � s �zContext._shallow_copyc
C s6 t | j| j| j| j| j| j| j�� | j �� | j
� }|S )z Returns a deep copy from self.) r rF rE r< rG r� r� r4 rM r3 r� r� r) r) r+ rM � s �z Context.copyc G sZ t �||�}|| jkr(|� j| f|�� S d| j|< | j| sN|� j| f|�� S ||��dS )a# Handles an error
If the flag is in _ignored_flags, returns the default response.
Otherwise, it sets the flag, then, if the corresponding
trap_enabler is set, it reraises the exception. Otherwise, it returns
the default value after setting the flag.
r. N)�_condition_maprI r� r2 r4 r3 )r0 Z conditionZ explanationr* �errorr) r) r+ ri � s
zContext._raise_errorc C s
| j t� S )z$Ignore all flags, if they are raised)�
_ignore_flagsr2 r� r) r) r+ r� � s zContext._ignore_all_flagsc G s | j t|� | _ t|�S )z$Ignore the flags, if they are raised)r� ro )r0 r4 r) r) r+ r� � s zContext._ignore_flagsc G s8 |r t |d ttf�r |d }|D ]}| j�|� q"dS )z+Stop ignoring the flags, if they are raisedr& N)rd rp ro r� �remove)r0 r4 r� r) r) r+ �
_regard_flags� s zContext._regard_flagsc C s t | j| j d �S )z!Returns Etiny (= Emin - prec + 1)r. )rV r< rF r� r) r) r+ r� � s z
Context.Etinyc C s t | j| j d �S )z,Returns maximum exponent (= Emax - prec + 1)r. )rV rG rF r� r) r) r+ r� � s z Context.Etopc C s | j }|| _ |S )a� Sets the rounding type.
Sets the rounding type, and returns the current (previous)
rounding type. Often used like:
context = context.copy()
# so you don't change the calling context
# if an error occurs in the middle.
rounding = context._set_rounding(ROUND_UP)
val = self.__sub__(other, context=context)
context._set_rounding(rounding)
This will make it round up for that operation.
)rE )r0 r� rE r) r) r+ rD � s zContext._set_roundingrR c C sj t |t�r*||�� ks d|kr*| �td�S t|| d�}|�� r`t|j�| j | j
kr`| �td�S |� | �S )z�Creates a new Decimal instance but using self as context.
This method implements the to-number operation of the
IBM Decimal specification.rS zAtrailing or leading whitespace and underscores are not permitted.rL z diagnostic info too long in NaN) rd re rg ri r r r� rk r< rF r� r� )r0 r` r� r) r) r+ �create_decimal� s � �zContext.create_decimalc C s t �|�}|�| �S )a� Creates a new Decimal instance from a float but rounding using self
as the context.
>>> context = Context(prec=5, rounding=ROUND_DOWN)
>>> context.create_decimal_from_float(3.1415926535897932)
Decimal('3.1415')
>>> context = Context(prec=5, traps=[Inexact])
>>> context.create_decimal_from_float(3.1415926535897932)
Traceback (most recent call last):
...
decimal.Inexact: None
)r rv r� )r0 r� r� r) r) r+ �create_decimal_from_float s
z!Context.create_decimal_from_floatc C s t |dd�}|j| d�S )a[ Returns the absolute value of the operand.
If the operand is negative, the result is the same as using the minus
operation on the operand. Otherwise, the result is the same as using
the plus operation on the operand.
>>> ExtendedContext.abs(Decimal('2.1'))
Decimal('2.1')
>>> ExtendedContext.abs(Decimal('-100'))
Decimal('100')
>>> ExtendedContext.abs(Decimal('101.5'))
Decimal('101.5')
>>> ExtendedContext.abs(Decimal('-101.5'))
Decimal('101.5')
>>> ExtendedContext.abs(-1)
Decimal('1')
Tr� rL )r� r� �r0 r- r) r) r+ rm ! s z Context.absc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a� Return the sum of the two operands.
>>> ExtendedContext.add(Decimal('12'), Decimal('7.00'))
Decimal('19.00')
>>> ExtendedContext.add(Decimal('1E+2'), Decimal('1.01E+4'))
Decimal('1.02E+4')
>>> ExtendedContext.add(1, Decimal(2))
Decimal('3')
>>> ExtendedContext.add(Decimal(8), 5)
Decimal('13')
>>> ExtendedContext.add(5, 5)
Decimal('10')
Tr� rL � Unable to convert %s to DecimalN)r� r� r� rw �r0 r- rs r� r) r) r+ �add6 s
z Context.addc C s t |�| ��S r( )re r� r� r) r) r+ �_applyK s zContext._applyc C s t |t�std��|�� S )z�Returns the same Decimal object.
As we do not have different encodings for the same number, the
received object already is in its canonical form.
>>> ExtendedContext.canonical(Decimal('2.50'))
Decimal('2.50')
z,canonical requires a Decimal as an argument.)rd r rw rM r� r) r) r+ rM N s
zContext.canonicalc C s t |dd�}|j|| d�S )a� Compares values numerically.
If the signs of the operands differ, a value representing each operand
('-1' if the operand is less than zero, '0' if the operand is zero or
negative zero, or '1' if the operand is greater than zero) is used in
place of that operand for the comparison instead of the actual
operand.
The comparison is then effected by subtracting the second operand from
the first and then returning a value according to the result of the
subtraction: '-1' if the result is less than zero, '0' if the result is
zero or negative zero, or '1' if the result is greater than zero.
>>> ExtendedContext.compare(Decimal('2.1'), Decimal('3'))
Decimal('-1')
>>> ExtendedContext.compare(Decimal('2.1'), Decimal('2.1'))
Decimal('0')
>>> ExtendedContext.compare(Decimal('2.1'), Decimal('2.10'))
Decimal('0')
>>> ExtendedContext.compare(Decimal('3'), Decimal('2.1'))
Decimal('1')
>>> ExtendedContext.compare(Decimal('2.1'), Decimal('-3'))
Decimal('1')
>>> ExtendedContext.compare(Decimal('-3'), Decimal('2.1'))
Decimal('-1')
>>> ExtendedContext.compare(1, 2)
Decimal('-1')
>>> ExtendedContext.compare(Decimal(1), 2)
Decimal('-1')
>>> ExtendedContext.compare(1, Decimal(2))
Decimal('-1')
Tr� rL )r� r� �r0 r- rs r) r) r+ r� [ s ! zContext.comparec C s t |dd�}|j|| d�S )a Compares the values of the two operands numerically.
It's pretty much like compare(), but all NaNs signal, with signaling
NaNs taking precedence over quiet NaNs.
>>> c = ExtendedContext
>>> c.compare_signal(Decimal('2.1'), Decimal('3'))
Decimal('-1')
>>> c.compare_signal(Decimal('2.1'), Decimal('2.1'))
Decimal('0')
>>> c.flags[InvalidOperation] = 0
>>> print(c.flags[InvalidOperation])
0
>>> c.compare_signal(Decimal('NaN'), Decimal('2.1'))
Decimal('NaN')
>>> print(c.flags[InvalidOperation])
1
>>> c.flags[InvalidOperation] = 0
>>> print(c.flags[InvalidOperation])
0
>>> c.compare_signal(Decimal('sNaN'), Decimal('2.1'))
Decimal('NaN')
>>> print(c.flags[InvalidOperation])
1
>>> c.compare_signal(-1, 2)
Decimal('-1')
>>> c.compare_signal(Decimal(-1), 2)
Decimal('-1')
>>> c.compare_signal(-1, Decimal(2))
Decimal('-1')
Tr� rL )r� rN r� r) r) r+ rN s zContext.compare_signalc C s t |dd�}|�|�S )a+ Compares two operands using their abstract representation.
This is not like the standard compare, which use their numerical
value. Note that a total ordering is defined for all possible abstract
representations.
>>> ExtendedContext.compare_total(Decimal('12.73'), Decimal('127.9'))
Decimal('-1')
>>> ExtendedContext.compare_total(Decimal('-127'), Decimal('12'))
Decimal('-1')
>>> ExtendedContext.compare_total(Decimal('12.30'), Decimal('12.3'))
Decimal('-1')
>>> ExtendedContext.compare_total(Decimal('12.30'), Decimal('12.30'))
Decimal('0')
>>> ExtendedContext.compare_total(Decimal('12.3'), Decimal('12.300'))
Decimal('1')
>>> ExtendedContext.compare_total(Decimal('12.3'), Decimal('NaN'))
Decimal('-1')
>>> ExtendedContext.compare_total(1, 2)
Decimal('-1')
>>> ExtendedContext.compare_total(Decimal(1), 2)
Decimal('-1')
>>> ExtendedContext.compare_total(1, Decimal(2))
Decimal('-1')
Tr� )r� rJ r� r) r) r+ rJ � s zContext.compare_totalc C s t |dd�}|�|�S )z�Compares two operands using their abstract representation ignoring sign.
Like compare_total, but with operand's sign ignored and assumed to be 0.
Tr� )r� rR r� r) r) r+ rR � s zContext.compare_total_magc C s t |dd�}|�� S )a Returns a copy of the operand with the sign set to 0.
>>> ExtendedContext.copy_abs(Decimal('2.1'))
Decimal('2.1')
>>> ExtendedContext.copy_abs(Decimal('-100'))
Decimal('100')
>>> ExtendedContext.copy_abs(-1)
Decimal('1')
Tr� )r� r� r� r) r) r+ r� � s
zContext.copy_absc C s t |dd�}t|�S )a Returns a copy of the decimal object.
>>> ExtendedContext.copy_decimal(Decimal('2.1'))
Decimal('2.1')
>>> ExtendedContext.copy_decimal(Decimal('-1.00'))
Decimal('-1.00')
>>> ExtendedContext.copy_decimal(1)
Decimal('1')
Tr� )r� r r� r) r) r+ � copy_decimal� s
zContext.copy_decimalc C s t |dd�}|�� S )a( Returns a copy of the operand with the sign inverted.
>>> ExtendedContext.copy_negate(Decimal('101.5'))
Decimal('-101.5')
>>> ExtendedContext.copy_negate(Decimal('-101.5'))
Decimal('101.5')
>>> ExtendedContext.copy_negate(1)
Decimal('-1')
Tr� )r� r� r� r) r) r+ r� � s
zContext.copy_negatec C s t |dd�}|�|�S )a Copies the second operand's sign to the first one.
In detail, it returns a copy of the first operand with the sign
equal to the sign of the second operand.
>>> ExtendedContext.copy_sign(Decimal( '1.50'), Decimal('7.33'))
Decimal('1.50')
>>> ExtendedContext.copy_sign(Decimal('-1.50'), Decimal('7.33'))
Decimal('1.50')
>>> ExtendedContext.copy_sign(Decimal( '1.50'), Decimal('-7.33'))
Decimal('-1.50')
>>> ExtendedContext.copy_sign(Decimal('-1.50'), Decimal('-7.33'))
Decimal('-1.50')
>>> ExtendedContext.copy_sign(1, -2)
Decimal('-1')
>>> ExtendedContext.copy_sign(Decimal(1), -2)
Decimal('-1')
>>> ExtendedContext.copy_sign(1, Decimal(-2))
Decimal('-1')
Tr� )r� rS r� r) r) r+ rS � s zContext.copy_signc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a� Decimal division in a specified context.
>>> ExtendedContext.divide(Decimal('1'), Decimal('3'))
Decimal('0.333333333')
>>> ExtendedContext.divide(Decimal('2'), Decimal('3'))
Decimal('0.666666667')
>>> ExtendedContext.divide(Decimal('5'), Decimal('2'))
Decimal('2.5')
>>> ExtendedContext.divide(Decimal('1'), Decimal('10'))
Decimal('0.1')
>>> ExtendedContext.divide(Decimal('12'), Decimal('12'))
Decimal('1')
>>> ExtendedContext.divide(Decimal('8.00'), Decimal('2'))
Decimal('4.00')
>>> ExtendedContext.divide(Decimal('2.400'), Decimal('2.0'))
Decimal('1.20')
>>> ExtendedContext.divide(Decimal('1000'), Decimal('100'))
Decimal('10')
>>> ExtendedContext.divide(Decimal('1000'), Decimal('1'))
Decimal('1000')
>>> ExtendedContext.divide(Decimal('2.40E+6'), Decimal('2'))
Decimal('1.20E+6')
>>> ExtendedContext.divide(5, 5)
Decimal('1')
>>> ExtendedContext.divide(Decimal(5), 5)
Decimal('1')
>>> ExtendedContext.divide(5, Decimal(5))
Decimal('1')
Tr� rL r� N)r� r� r� rw r� r) r) r+ �divide s
zContext.dividec C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a/ Divides two numbers and returns the integer part of the result.
>>> ExtendedContext.divide_int(Decimal('2'), Decimal('3'))
Decimal('0')
>>> ExtendedContext.divide_int(Decimal('10'), Decimal('3'))
Decimal('3')
>>> ExtendedContext.divide_int(Decimal('1'), Decimal('0.3'))
Decimal('3')
>>> ExtendedContext.divide_int(10, 3)
Decimal('3')
>>> ExtendedContext.divide_int(Decimal(10), 3)
Decimal('3')
>>> ExtendedContext.divide_int(10, Decimal(3))
Decimal('3')
Tr� rL r� N)r� r� r� rw r� r) r) r+ �
divide_int+ s
zContext.divide_intc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a� Return (a // b, a % b).
>>> ExtendedContext.divmod(Decimal(8), Decimal(3))
(Decimal('2'), Decimal('2'))
>>> ExtendedContext.divmod(Decimal(8), Decimal(4))
(Decimal('2'), Decimal('0'))
>>> ExtendedContext.divmod(8, 4)
(Decimal('2'), Decimal('0'))
>>> ExtendedContext.divmod(Decimal(8), 4)
(Decimal('2'), Decimal('0'))
>>> ExtendedContext.divmod(8, Decimal(4))
(Decimal('2'), Decimal('0'))
Tr� rL r� N)r� r� r� rw r� r) r) r+ r� B s
zContext.divmodc C s t |dd�}|j| d�S )a# Returns e ** a.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.exp(Decimal('-Infinity'))
Decimal('0')
>>> c.exp(Decimal('-1'))
Decimal('0.367879441')
>>> c.exp(Decimal('0'))
Decimal('1')
>>> c.exp(Decimal('1'))
Decimal('2.71828183')
>>> c.exp(Decimal('0.693147181'))
Decimal('2.00000000')
>>> c.exp(Decimal('+Infinity'))
Decimal('Infinity')
>>> c.exp(10)
Decimal('22026.4658')
Tr� rL )r� rW r� r) r) r+ rW W s z Context.expc C s t |dd�}|j||| d�S )a Returns a multiplied by b, plus c.
The first two operands are multiplied together, using multiply,
the third operand is then added to the result of that
multiplication, using add, all with only one final rounding.
>>> ExtendedContext.fma(Decimal('3'), Decimal('5'), Decimal('7'))
Decimal('22')
>>> ExtendedContext.fma(Decimal('3'), Decimal('-5'), Decimal('7'))
Decimal('-8')
>>> ExtendedContext.fma(Decimal('888565290'), Decimal('1557.96930'), Decimal('-86087.7578'))
Decimal('1.38435736E+12')
>>> ExtendedContext.fma(1, 3, 4)
Decimal('7')
>>> ExtendedContext.fma(1, Decimal(3), 4)
Decimal('7')
>>> ExtendedContext.fma(1, 3, Decimal(4))
Decimal('7')
Tr� rL )r� r )r0 r- rs rF r) r) r+ r o s z Context.fmac C s t |t�std��|�� S )a Return True if the operand is canonical; otherwise return False.
Currently, the encoding of a Decimal instance is always
canonical, so this method returns True for any Decimal.
>>> ExtendedContext.is_canonical(Decimal('2.50'))
True
z/is_canonical requires a Decimal as an argument.)rd r rw rV r� r) r) r+ rV � s
zContext.is_canonicalc C s t |dd�}|�� S )a, Return True if the operand is finite; otherwise return False.
A Decimal instance is considered finite if it is neither
infinite nor a NaN.
>>> ExtendedContext.is_finite(Decimal('2.50'))
True
>>> ExtendedContext.is_finite(Decimal('-0.3'))
True
>>> ExtendedContext.is_finite(Decimal('0'))
True
>>> ExtendedContext.is_finite(Decimal('Inf'))
False
>>> ExtendedContext.is_finite(Decimal('NaN'))
False
>>> ExtendedContext.is_finite(1)
True
Tr� )r� rW r� r) r) r+ rW � s zContext.is_finitec C s t |dd�}|�� S )aU Return True if the operand is infinite; otherwise return False.
>>> ExtendedContext.is_infinite(Decimal('2.50'))
False
>>> ExtendedContext.is_infinite(Decimal('-Inf'))
True
>>> ExtendedContext.is_infinite(Decimal('NaN'))
False
>>> ExtendedContext.is_infinite(1)
False
Tr� )r� r= r� r) r) r+ r= � s zContext.is_infinitec C s t |dd�}|�� S )aO Return True if the operand is a qNaN or sNaN;
otherwise return False.
>>> ExtendedContext.is_nan(Decimal('2.50'))
False
>>> ExtendedContext.is_nan(Decimal('NaN'))
True
>>> ExtendedContext.is_nan(Decimal('-sNaN'))
True
>>> ExtendedContext.is_nan(1)
False
Tr� )r� r� r� r) r) r+ r� � s
zContext.is_nanc C s t |dd�}|j| d�S )a� Return True if the operand is a normal number;
otherwise return False.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.is_normal(Decimal('2.50'))
True
>>> c.is_normal(Decimal('0.1E-999'))
False
>>> c.is_normal(Decimal('0.00'))
False
>>> c.is_normal(Decimal('-Inf'))
False
>>> c.is_normal(Decimal('NaN'))
False
>>> c.is_normal(1)
True
Tr� rL )r� rY r� r) r) r+ rY � s zContext.is_normalc C s t |dd�}|�� S )aH Return True if the operand is a quiet NaN; otherwise return False.
>>> ExtendedContext.is_qnan(Decimal('2.50'))
False
>>> ExtendedContext.is_qnan(Decimal('NaN'))
True
>>> ExtendedContext.is_qnan(Decimal('sNaN'))
False
>>> ExtendedContext.is_qnan(1)
False
Tr� )r� r� r� r) r) r+ r� � s zContext.is_qnanc C s t |dd�}|�� S )a� Return True if the operand is negative; otherwise return False.
>>> ExtendedContext.is_signed(Decimal('2.50'))
False
>>> ExtendedContext.is_signed(Decimal('-12'))
True
>>> ExtendedContext.is_signed(Decimal('-0'))
True
>>> ExtendedContext.is_signed(8)
False
>>> ExtendedContext.is_signed(-8)
True
Tr� )r� rZ r� r) r) r+ rZ � s zContext.is_signedc C s t |dd�}|�� S )aT Return True if the operand is a signaling NaN;
otherwise return False.
>>> ExtendedContext.is_snan(Decimal('2.50'))
False
>>> ExtendedContext.is_snan(Decimal('NaN'))
False
>>> ExtendedContext.is_snan(Decimal('sNaN'))
True
>>> ExtendedContext.is_snan(1)
False
Tr� )r� r� r� r) r) r+ r� � s
zContext.is_snanc C s t |dd�}|j| d�S )a� Return True if the operand is subnormal; otherwise return False.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.is_subnormal(Decimal('2.50'))
False
>>> c.is_subnormal(Decimal('0.1E-999'))
True
>>> c.is_subnormal(Decimal('0.00'))
False
>>> c.is_subnormal(Decimal('-Inf'))
False
>>> c.is_subnormal(Decimal('NaN'))
False
>>> c.is_subnormal(1)
False
Tr� rL )r� r[ r� r) r) r+ r[ s zContext.is_subnormalc C s t |dd�}|�� S )au Return True if the operand is a zero; otherwise return False.
>>> ExtendedContext.is_zero(Decimal('0'))
True
>>> ExtendedContext.is_zero(Decimal('2.50'))
False
>>> ExtendedContext.is_zero(Decimal('-0E+2'))
True
>>> ExtendedContext.is_zero(1)
False
>>> ExtendedContext.is_zero(0)
True
Tr� )r� r\ r� r) r) r+ r\ % s zContext.is_zeroc C s t |dd�}|j| d�S )a� Returns the natural (base e) logarithm of the operand.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.ln(Decimal('0'))
Decimal('-Infinity')
>>> c.ln(Decimal('1.000'))
Decimal('0')
>>> c.ln(Decimal('2.71828183'))
Decimal('1.00000000')
>>> c.ln(Decimal('10'))
Decimal('2.30258509')
>>> c.ln(Decimal('+Infinity'))
Decimal('Infinity')
>>> c.ln(1)
Decimal('0')
Tr� rL )r� rf r� r) r) r+ rf 6 s z
Context.lnc C s t |dd�}|j| d�S )a� Returns the base 10 logarithm of the operand.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.log10(Decimal('0'))
Decimal('-Infinity')
>>> c.log10(Decimal('0.001'))
Decimal('-3')
>>> c.log10(Decimal('1.000'))
Decimal('0')
>>> c.log10(Decimal('2'))
Decimal('0.301029996')
>>> c.log10(Decimal('10'))
Decimal('1')
>>> c.log10(Decimal('70'))
Decimal('1.84509804')
>>> c.log10(Decimal('+Infinity'))
Decimal('Infinity')
>>> c.log10(0)
Decimal('-Infinity')
>>> c.log10(1)
Decimal('0')
Tr� rL )r� ri r� r) r) r+ ri L s z
Context.log10c C s t |dd�}|j| d�S )a4 Returns the exponent of the magnitude of the operand's MSD.
The result is the integer which is the exponent of the magnitude
of the most significant digit of the operand (as though the
operand were truncated to a single digit while maintaining the
value of that digit and without limiting the resulting exponent).
>>> ExtendedContext.logb(Decimal('250'))
Decimal('2')
>>> ExtendedContext.logb(Decimal('2.50'))
Decimal('0')
>>> ExtendedContext.logb(Decimal('0.03'))
Decimal('-2')
>>> ExtendedContext.logb(Decimal('0'))
Decimal('-Infinity')
>>> ExtendedContext.logb(1)
Decimal('0')
>>> ExtendedContext.logb(10)
Decimal('1')
>>> ExtendedContext.logb(100)
Decimal('2')
Tr� rL )r� rj r� r) r) r+ rj h s z Context.logbc C s t |dd�}|j|| d�S )a� Applies the logical operation 'and' between each operand's digits.
The operands must be both logical numbers.
>>> ExtendedContext.logical_and(Decimal('0'), Decimal('0'))
Decimal('0')
>>> ExtendedContext.logical_and(Decimal('0'), Decimal('1'))
Decimal('0')
>>> ExtendedContext.logical_and(Decimal('1'), Decimal('0'))
Decimal('0')
>>> ExtendedContext.logical_and(Decimal('1'), Decimal('1'))
Decimal('1')
>>> ExtendedContext.logical_and(Decimal('1100'), Decimal('1010'))
Decimal('1000')
>>> ExtendedContext.logical_and(Decimal('1111'), Decimal('10'))
Decimal('10')
>>> ExtendedContext.logical_and(110, 1101)
Decimal('100')
>>> ExtendedContext.logical_and(Decimal(110), 1101)
Decimal('100')
>>> ExtendedContext.logical_and(110, Decimal(1101))
Decimal('100')
Tr� rL )r� rx r� r) r) r+ rx � s zContext.logical_andc C s t |dd�}|j| d�S )a Invert all the digits in the operand.
The operand must be a logical number.
>>> ExtendedContext.logical_invert(Decimal('0'))
Decimal('111111111')
>>> ExtendedContext.logical_invert(Decimal('1'))
Decimal('111111110')
>>> ExtendedContext.logical_invert(Decimal('111111111'))
Decimal('0')
>>> ExtendedContext.logical_invert(Decimal('101010101'))
Decimal('10101010')
>>> ExtendedContext.logical_invert(1101)
Decimal('111110010')
Tr� rL )r� rz r� r) r) r+ rz � s zContext.logical_invertc C s t |dd�}|j|| d�S )a� Applies the logical operation 'or' between each operand's digits.
The operands must be both logical numbers.
>>> ExtendedContext.logical_or(Decimal('0'), Decimal('0'))
Decimal('0')
>>> ExtendedContext.logical_or(Decimal('0'), Decimal('1'))
Decimal('1')
>>> ExtendedContext.logical_or(Decimal('1'), Decimal('0'))
Decimal('1')
>>> ExtendedContext.logical_or(Decimal('1'), Decimal('1'))
Decimal('1')
>>> ExtendedContext.logical_or(Decimal('1100'), Decimal('1010'))
Decimal('1110')
>>> ExtendedContext.logical_or(Decimal('1110'), Decimal('10'))
Decimal('1110')
>>> ExtendedContext.logical_or(110, 1101)
Decimal('1111')
>>> ExtendedContext.logical_or(Decimal(110), 1101)
Decimal('1111')
>>> ExtendedContext.logical_or(110, Decimal(1101))
Decimal('1111')
Tr� rL )r� r{ r� r) r) r+ r{ � s zContext.logical_orc C s t |dd�}|j|| d�S )a� Applies the logical operation 'xor' between each operand's digits.
The operands must be both logical numbers.
>>> ExtendedContext.logical_xor(Decimal('0'), Decimal('0'))
Decimal('0')
>>> ExtendedContext.logical_xor(Decimal('0'), Decimal('1'))
Decimal('1')
>>> ExtendedContext.logical_xor(Decimal('1'), Decimal('0'))
Decimal('1')
>>> ExtendedContext.logical_xor(Decimal('1'), Decimal('1'))
Decimal('0')
>>> ExtendedContext.logical_xor(Decimal('1100'), Decimal('1010'))
Decimal('110')
>>> ExtendedContext.logical_xor(Decimal('1111'), Decimal('10'))
Decimal('1101')
>>> ExtendedContext.logical_xor(110, 1101)
Decimal('1011')
>>> ExtendedContext.logical_xor(Decimal(110), 1101)
Decimal('1011')
>>> ExtendedContext.logical_xor(110, Decimal(1101))
Decimal('1011')
Tr� rL )r� ry r� r) r) r+ ry � s zContext.logical_xorc C s t |dd�}|j|| d�S )a� max compares two values numerically and returns the maximum.
If either operand is a NaN then the general rules apply.
Otherwise, the operands are compared as though by the compare
operation. If they are numerically equal then the left-hand operand
is chosen as the result. Otherwise the maximum (closer to positive
infinity) of the two operands is chosen as the result.
>>> ExtendedContext.max(Decimal('3'), Decimal('2'))
Decimal('3')
>>> ExtendedContext.max(Decimal('-10'), Decimal('3'))
Decimal('3')
>>> ExtendedContext.max(Decimal('1.0'), Decimal('1'))
Decimal('1')
>>> ExtendedContext.max(Decimal('7'), Decimal('NaN'))
Decimal('7')
>>> ExtendedContext.max(1, 2)
Decimal('2')
>>> ExtendedContext.max(Decimal(1), 2)
Decimal('2')
>>> ExtendedContext.max(1, Decimal(2))
Decimal('2')
Tr� rL )r� r� r� r) r) r+ r� � s z Context.maxc C s t |dd�}|j|| d�S )a� Compares the values numerically with their sign ignored.
>>> ExtendedContext.max_mag(Decimal('7'), Decimal('NaN'))
Decimal('7')
>>> ExtendedContext.max_mag(Decimal('7'), Decimal('-10'))
Decimal('-10')
>>> ExtendedContext.max_mag(1, -2)
Decimal('-2')
>>> ExtendedContext.max_mag(Decimal(1), -2)
Decimal('-2')
>>> ExtendedContext.max_mag(1, Decimal(-2))
Decimal('-2')
Tr� rL )r� r~ r� r) r) r+ r~ s zContext.max_magc C s t |dd�}|j|| d�S )a� min compares two values numerically and returns the minimum.
If either operand is a NaN then the general rules apply.
Otherwise, the operands are compared as though by the compare
operation. If they are numerically equal then the left-hand operand
is chosen as the result. Otherwise the minimum (closer to negative
infinity) of the two operands is chosen as the result.
>>> ExtendedContext.min(Decimal('3'), Decimal('2'))
Decimal('2')
>>> ExtendedContext.min(Decimal('-10'), Decimal('3'))
Decimal('-10')
>>> ExtendedContext.min(Decimal('1.0'), Decimal('1'))
Decimal('1.0')
>>> ExtendedContext.min(Decimal('7'), Decimal('NaN'))
Decimal('7')
>>> ExtendedContext.min(1, 2)
Decimal('1')
>>> ExtendedContext.min(Decimal(1), 2)
Decimal('1')
>>> ExtendedContext.min(1, Decimal(29))
Decimal('1')
Tr� rL )r� r� r� r) r) r+ r� s z Context.minc C s t |dd�}|j|| d�S )a� Compares the values numerically with their sign ignored.
>>> ExtendedContext.min_mag(Decimal('3'), Decimal('-2'))
Decimal('-2')
>>> ExtendedContext.min_mag(Decimal('-3'), Decimal('NaN'))
Decimal('-3')
>>> ExtendedContext.min_mag(1, -2)
Decimal('1')
>>> ExtendedContext.min_mag(Decimal(1), -2)
Decimal('1')
>>> ExtendedContext.min_mag(1, Decimal(-2))
Decimal('1')
Tr� rL )r� r r� r) r) r+ r - s zContext.min_magc C s t |dd�}|j| d�S )a� Minus corresponds to unary prefix minus in Python.
The operation is evaluated using the same rules as subtract; the
operation minus(a) is calculated as subtract('0', a) where the '0'
has the same exponent as the operand.
>>> ExtendedContext.minus(Decimal('1.3'))
Decimal('-1.3')
>>> ExtendedContext.minus(Decimal('-1.3'))
Decimal('1.3')
>>> ExtendedContext.minus(1)
Decimal('-1')
Tr� rL )r� r� r� r) r) r+ �minus> s z
Context.minusc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a� multiply multiplies two operands.
If either operand is a special value then the general rules apply.
Otherwise, the operands are multiplied together
('long multiplication'), resulting in a number which may be as long as
the sum of the lengths of the two operands.
>>> ExtendedContext.multiply(Decimal('1.20'), Decimal('3'))
Decimal('3.60')
>>> ExtendedContext.multiply(Decimal('7'), Decimal('3'))
Decimal('21')
>>> ExtendedContext.multiply(Decimal('0.9'), Decimal('0.8'))
Decimal('0.72')
>>> ExtendedContext.multiply(Decimal('0.9'), Decimal('-0'))
Decimal('-0.0')
>>> ExtendedContext.multiply(Decimal('654321'), Decimal('654321'))
Decimal('4.28135971E+11')
>>> ExtendedContext.multiply(7, 7)
Decimal('49')
>>> ExtendedContext.multiply(Decimal(7), 7)
Decimal('49')
>>> ExtendedContext.multiply(7, Decimal(7))
Decimal('49')
Tr� rL r� N)r� r� r� rw r� r) r) r+ �multiplyO s
zContext.multiplyc C s t |dd�}|j| d�S )a" Returns the largest representable number smaller than a.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> ExtendedContext.next_minus(Decimal('1'))
Decimal('0.999999999')
>>> c.next_minus(Decimal('1E-1007'))
Decimal('0E-1007')
>>> ExtendedContext.next_minus(Decimal('-1.00000003'))
Decimal('-1.00000004')
>>> c.next_minus(Decimal('Infinity'))
Decimal('9.99999999E+999')
>>> c.next_minus(1)
Decimal('0.999999999')
Tr� rL )r� r� r� r) r) r+ r� o s zContext.next_minusc C s t |dd�}|j| d�S )a Returns the smallest representable number larger than a.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> ExtendedContext.next_plus(Decimal('1'))
Decimal('1.00000001')
>>> c.next_plus(Decimal('-1E-1007'))
Decimal('-0E-1007')
>>> ExtendedContext.next_plus(Decimal('-1.00000003'))
Decimal('-1.00000002')
>>> c.next_plus(Decimal('-Infinity'))
Decimal('-9.99999999E+999')
>>> c.next_plus(1)
Decimal('1.00000001')
Tr� rL )r� r� r� r) r) r+ r� � s zContext.next_plusc C s t |dd�}|j|| d�S )a� Returns the number closest to a, in direction towards b.
The result is the closest representable number from the first
operand (but not the first operand) that is in the direction
towards the second operand, unless the operands have the same
value.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.next_toward(Decimal('1'), Decimal('2'))
Decimal('1.00000001')
>>> c.next_toward(Decimal('-1E-1007'), Decimal('1'))
Decimal('-0E-1007')
>>> c.next_toward(Decimal('-1.00000003'), Decimal('0'))
Decimal('-1.00000002')
>>> c.next_toward(Decimal('1'), Decimal('0'))
Decimal('0.999999999')
>>> c.next_toward(Decimal('1E-1007'), Decimal('-100'))
Decimal('0E-1007')
>>> c.next_toward(Decimal('-1.00000003'), Decimal('-10'))
Decimal('-1.00000004')
>>> c.next_toward(Decimal('0.00'), Decimal('-0.0000'))
Decimal('-0.00')
>>> c.next_toward(0, 1)
Decimal('1E-1007')
>>> c.next_toward(Decimal(0), 1)
Decimal('1E-1007')
>>> c.next_toward(0, Decimal(1))
Decimal('1E-1007')
Tr� rL )r� r� r� r) r) r+ r� � s zContext.next_towardc C s t |dd�}|j| d�S )a� normalize reduces an operand to its simplest form.
Essentially a plus operation with all trailing zeros removed from the
result.
>>> ExtendedContext.normalize(Decimal('2.1'))
Decimal('2.1')
>>> ExtendedContext.normalize(Decimal('-2.0'))
Decimal('-2')
>>> ExtendedContext.normalize(Decimal('1.200'))
Decimal('1.2')
>>> ExtendedContext.normalize(Decimal('-120'))
Decimal('-1.2E+2')
>>> ExtendedContext.normalize(Decimal('120.00'))
Decimal('1.2E+2')
>>> ExtendedContext.normalize(Decimal('0.00'))
Decimal('0')
>>> ExtendedContext.normalize(6)
Decimal('6')
Tr� rL )r� r; r� r) r) r+ r; � s zContext.normalizec C s t |dd�}|j| d�S )a� Returns an indication of the class of the operand.
The class is one of the following strings:
-sNaN
-NaN
-Infinity
-Normal
-Subnormal
-Zero
+Zero
+Subnormal
+Normal
+Infinity
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.number_class(Decimal('Infinity'))
'+Infinity'
>>> c.number_class(Decimal('1E-10'))
'+Normal'
>>> c.number_class(Decimal('2.50'))
'+Normal'
>>> c.number_class(Decimal('0.1E-999'))
'+Subnormal'
>>> c.number_class(Decimal('0'))
'+Zero'
>>> c.number_class(Decimal('-0'))
'-Zero'
>>> c.number_class(Decimal('-0.1E-999'))
'-Subnormal'
>>> c.number_class(Decimal('-1E-10'))
'-Normal'
>>> c.number_class(Decimal('-2.50'))
'-Normal'
>>> c.number_class(Decimal('-Infinity'))
'-Infinity'
>>> c.number_class(Decimal('NaN'))
'NaN'
>>> c.number_class(Decimal('-NaN'))
'NaN'
>>> c.number_class(Decimal('sNaN'))
'sNaN'
>>> c.number_class(123)
'+Normal'
Tr� rL )r� r� r� r) r) r+ r� � s / zContext.number_classc C s t |dd�}|j| d�S )a� Plus corresponds to unary prefix plus in Python.
The operation is evaluated using the same rules as add; the
operation plus(a) is calculated as add('0', a) where the '0'
has the same exponent as the operand.
>>> ExtendedContext.plus(Decimal('1.3'))
Decimal('1.3')
>>> ExtendedContext.plus(Decimal('-1.3'))
Decimal('-1.3')
>>> ExtendedContext.plus(-1)
Decimal('-1')
Tr� rL )r� r� r� r) r) r+ �plus s z Context.plusc C s: t |dd�}|j||| d�}|tkr2td| ��n|S dS )a Raises a to the power of b, to modulo if given.
With two arguments, compute a**b. If a is negative then b
must be integral. The result will be inexact unless b is
integral and the result is finite and can be expressed exactly
in 'precision' digits.
With three arguments, compute (a**b) % modulo. For the
three argument form, the following restrictions on the
arguments hold:
- all three arguments must be integral
- b must be nonnegative
- at least one of a or b must be nonzero
- modulo must be nonzero and have at most 'precision' digits
The result of pow(a, b, modulo) is identical to the result
that would be obtained by computing (a**b) % modulo with
unbounded precision, but is computed more efficiently. It is
always exact.
>>> c = ExtendedContext.copy()
>>> c.Emin = -999
>>> c.Emax = 999
>>> c.power(Decimal('2'), Decimal('3'))
Decimal('8')
>>> c.power(Decimal('-2'), Decimal('3'))
Decimal('-8')
>>> c.power(Decimal('2'), Decimal('-3'))
Decimal('0.125')
>>> c.power(Decimal('1.7'), Decimal('8'))
Decimal('69.7575744')
>>> c.power(Decimal('10'), Decimal('0.301029996'))
Decimal('2.00000000')
>>> c.power(Decimal('Infinity'), Decimal('-1'))
Decimal('0')
>>> c.power(Decimal('Infinity'), Decimal('0'))
Decimal('1')
>>> c.power(Decimal('Infinity'), Decimal('1'))
Decimal('Infinity')
>>> c.power(Decimal('-Infinity'), Decimal('-1'))
Decimal('-0')
>>> c.power(Decimal('-Infinity'), Decimal('0'))
Decimal('1')
>>> c.power(Decimal('-Infinity'), Decimal('1'))
Decimal('-Infinity')
>>> c.power(Decimal('-Infinity'), Decimal('2'))
Decimal('Infinity')
>>> c.power(Decimal('0'), Decimal('0'))
Decimal('NaN')
>>> c.power(Decimal('3'), Decimal('7'), Decimal('16'))
Decimal('11')
>>> c.power(Decimal('-3'), Decimal('7'), Decimal('16'))
Decimal('-11')
>>> c.power(Decimal('-3'), Decimal('8'), Decimal('16'))
Decimal('1')
>>> c.power(Decimal('3'), Decimal('7'), Decimal('-16'))
Decimal('11')
>>> c.power(Decimal('23E12345'), Decimal('67E189'), Decimal('123456789'))
Decimal('11729830')
>>> c.power(Decimal('-0'), Decimal('17'), Decimal('1729'))
Decimal('-0')
>>> c.power(Decimal('-23'), Decimal('0'), Decimal('65537'))
Decimal('1')
>>> ExtendedContext.power(7, 7)
Decimal('823543')
>>> ExtendedContext.power(Decimal(7), 7)
Decimal('823543')
>>> ExtendedContext.power(7, Decimal(7), 2)
Decimal('1')
Tr� rL r� N)r� r7 r� rw )r0 r- rs r r� r) r) r+ �power s
I z
Context.powerc C s t |dd�}|j|| d�S )a
Returns a value equal to 'a' (rounded), having the exponent of 'b'.
The coefficient of the result is derived from that of the left-hand
operand. It may be rounded using the current rounding setting (if the
exponent is being increased), multiplied by a positive power of ten (if
the exponent is being decreased), or is unchanged (if the exponent is
already equal to that of the right-hand operand).
Unlike other operations, if the length of the coefficient after the
quantize operation would be greater than precision then an Invalid
operation condition is raised. This guarantees that, unless there is
an error condition, the exponent of the result of a quantize is always
equal to that of the right-hand operand.
Also unlike other operations, quantize will never raise Underflow, even
if the result is subnormal and inexact.
>>> ExtendedContext.quantize(Decimal('2.17'), Decimal('0.001'))
Decimal('2.170')
>>> ExtendedContext.quantize(Decimal('2.17'), Decimal('0.01'))
Decimal('2.17')
>>> ExtendedContext.quantize(Decimal('2.17'), Decimal('0.1'))
Decimal('2.2')
>>> ExtendedContext.quantize(Decimal('2.17'), Decimal('1e+0'))
Decimal('2')
>>> ExtendedContext.quantize(Decimal('2.17'), Decimal('1e+1'))
Decimal('0E+1')
>>> ExtendedContext.quantize(Decimal('-Inf'), Decimal('Infinity'))
Decimal('-Infinity')
>>> ExtendedContext.quantize(Decimal('2'), Decimal('Infinity'))
Decimal('NaN')
>>> ExtendedContext.quantize(Decimal('-0.1'), Decimal('1'))
Decimal('-0')
>>> ExtendedContext.quantize(Decimal('-0'), Decimal('1e+5'))
Decimal('-0E+5')
>>> ExtendedContext.quantize(Decimal('+35236450.6'), Decimal('1e-2'))
Decimal('NaN')
>>> ExtendedContext.quantize(Decimal('-35236450.6'), Decimal('1e-2'))
Decimal('NaN')
>>> ExtendedContext.quantize(Decimal('217'), Decimal('1e-1'))
Decimal('217.0')
>>> ExtendedContext.quantize(Decimal('217'), Decimal('1e-0'))
Decimal('217')
>>> ExtendedContext.quantize(Decimal('217'), Decimal('1e+1'))
Decimal('2.2E+2')
>>> ExtendedContext.quantize(Decimal('217'), Decimal('1e+2'))
Decimal('2E+2')
>>> ExtendedContext.quantize(1, 2)
Decimal('1')
>>> ExtendedContext.quantize(Decimal(1), 2)
Decimal('1')
>>> ExtendedContext.quantize(1, Decimal(2))
Decimal('1')
Tr� rL )r� r r� r) r) r+ r e s 7 zContext.quantizec C s t d�S )zkJust returns 10, as this is Decimal, :)
>>> ExtendedContext.radix()
Decimal('10')
r� r� r� r) r) r+ r� � s z
Context.radixc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a Returns the remainder from integer division.
The result is the residue of the dividend after the operation of
calculating integer division as described for divide-integer, rounded
to precision digits if necessary. The sign of the result, if
non-zero, is the same as that of the original dividend.
This operation will fail under the same conditions as integer division
(that is, if integer division on the same two operands would fail, the
remainder cannot be calculated).
>>> ExtendedContext.remainder(Decimal('2.1'), Decimal('3'))
Decimal('2.1')
>>> ExtendedContext.remainder(Decimal('10'), Decimal('3'))
Decimal('1')
>>> ExtendedContext.remainder(Decimal('-10'), Decimal('3'))
Decimal('-1')
>>> ExtendedContext.remainder(Decimal('10.2'), Decimal('1'))
Decimal('0.2')
>>> ExtendedContext.remainder(Decimal('10'), Decimal('0.3'))
Decimal('0.1')
>>> ExtendedContext.remainder(Decimal('3.6'), Decimal('1.3'))
Decimal('1.0')
>>> ExtendedContext.remainder(22, 6)
Decimal('4')
>>> ExtendedContext.remainder(Decimal(22), 6)
Decimal('4')
>>> ExtendedContext.remainder(22, Decimal(6))
Decimal('4')
Tr� rL r� N)r� r� r� rw r� r) r) r+ r� � s
zContext.remainderc C s t |dd�}|j|| d�S )aG Returns to be "a - b * n", where n is the integer nearest the exact
value of "x / b" (if two integers are equally near then the even one
is chosen). If the result is equal to 0 then its sign will be the
sign of a.
This operation will fail under the same conditions as integer division
(that is, if integer division on the same two operands would fail, the
remainder cannot be calculated).
>>> ExtendedContext.remainder_near(Decimal('2.1'), Decimal('3'))
Decimal('-0.9')
>>> ExtendedContext.remainder_near(Decimal('10'), Decimal('6'))
Decimal('-2')
>>> ExtendedContext.remainder_near(Decimal('10'), Decimal('3'))
Decimal('1')
>>> ExtendedContext.remainder_near(Decimal('-10'), Decimal('3'))
Decimal('-1')
>>> ExtendedContext.remainder_near(Decimal('10.2'), Decimal('1'))
Decimal('0.2')
>>> ExtendedContext.remainder_near(Decimal('10'), Decimal('0.3'))
Decimal('0.1')
>>> ExtendedContext.remainder_near(Decimal('3.6'), Decimal('1.3'))
Decimal('-0.3')
>>> ExtendedContext.remainder_near(3, 11)
Decimal('3')
>>> ExtendedContext.remainder_near(Decimal(3), 11)
Decimal('3')
>>> ExtendedContext.remainder_near(3, Decimal(11))
Decimal('3')
Tr� rL )r� r� r� r) r) r+ r� � s zContext.remainder_nearc C s t |dd�}|j|| d�S )aN Returns a rotated copy of a, b times.
The coefficient of the result is a rotated copy of the digits in
the coefficient of the first operand. The number of places of
rotation is taken from the absolute value of the second operand,
with the rotation being to the left if the second operand is
positive or to the right otherwise.
>>> ExtendedContext.rotate(Decimal('34'), Decimal('8'))
Decimal('400000003')
>>> ExtendedContext.rotate(Decimal('12'), Decimal('9'))
Decimal('12')
>>> ExtendedContext.rotate(Decimal('123456789'), Decimal('-2'))
Decimal('891234567')
>>> ExtendedContext.rotate(Decimal('123456789'), Decimal('0'))
Decimal('123456789')
>>> ExtendedContext.rotate(Decimal('123456789'), Decimal('+2'))
Decimal('345678912')
>>> ExtendedContext.rotate(1333333, 1)
Decimal('13333330')
>>> ExtendedContext.rotate(Decimal(1333333), 1)
Decimal('13333330')
>>> ExtendedContext.rotate(1333333, Decimal(1))
Decimal('13333330')
Tr� rL )r� r� r� r) r) r+ r� � s zContext.rotatec C s t |dd�}|�|�S )a� Returns True if the two operands have the same exponent.
The result is never affected by either the sign or the coefficient of
either operand.
>>> ExtendedContext.same_quantum(Decimal('2.17'), Decimal('0.001'))
False
>>> ExtendedContext.same_quantum(Decimal('2.17'), Decimal('0.01'))
True
>>> ExtendedContext.same_quantum(Decimal('2.17'), Decimal('1'))
False
>>> ExtendedContext.same_quantum(Decimal('Inf'), Decimal('-Inf'))
True
>>> ExtendedContext.same_quantum(10000, -1)
True
>>> ExtendedContext.same_quantum(Decimal(10000), -1)
True
>>> ExtendedContext.same_quantum(10000, Decimal(-1))
True
Tr� )r� r> r� r) r) r+ r> s zContext.same_quantumc C s t |dd�}|j|| d�S )a3 Returns the first operand after adding the second value its exp.
>>> ExtendedContext.scaleb(Decimal('7.50'), Decimal('-2'))
Decimal('0.0750')
>>> ExtendedContext.scaleb(Decimal('7.50'), Decimal('0'))
Decimal('7.50')
>>> ExtendedContext.scaleb(Decimal('7.50'), Decimal('3'))
Decimal('7.50E+3')
>>> ExtendedContext.scaleb(1, 4)
Decimal('1E+4')
>>> ExtendedContext.scaleb(Decimal(1), 4)
Decimal('1E+4')
>>> ExtendedContext.scaleb(1, Decimal(4))
Decimal('1E+4')
Tr� rL )r� r� r� r) r) r+ r� $ s zContext.scalebc C s t |dd�}|j|| d�S )a{ Returns a shifted copy of a, b times.
The coefficient of the result is a shifted copy of the digits
in the coefficient of the first operand. The number of places
to shift is taken from the absolute value of the second operand,
with the shift being to the left if the second operand is
positive or to the right otherwise. Digits shifted into the
coefficient are zeros.
>>> ExtendedContext.shift(Decimal('34'), Decimal('8'))
Decimal('400000000')
>>> ExtendedContext.shift(Decimal('12'), Decimal('9'))
Decimal('0')
>>> ExtendedContext.shift(Decimal('123456789'), Decimal('-2'))
Decimal('1234567')
>>> ExtendedContext.shift(Decimal('123456789'), Decimal('0'))
Decimal('123456789')
>>> ExtendedContext.shift(Decimal('123456789'), Decimal('+2'))
Decimal('345678900')
>>> ExtendedContext.shift(88888888, 2)
Decimal('888888800')
>>> ExtendedContext.shift(Decimal(88888888), 2)
Decimal('888888800')
>>> ExtendedContext.shift(88888888, Decimal(2))
Decimal('888888800')
Tr� rL )r� r� r� r) r) r+ r� 7 s z
Context.shiftc C s t |dd�}|j| d�S )a� Square root of a non-negative number to context precision.
If the result must be inexact, it is rounded using the round-half-even
algorithm.
>>> ExtendedContext.sqrt(Decimal('0'))
Decimal('0')
>>> ExtendedContext.sqrt(Decimal('-0'))
Decimal('-0')
>>> ExtendedContext.sqrt(Decimal('0.39'))
Decimal('0.624499800')
>>> ExtendedContext.sqrt(Decimal('100'))
Decimal('10')
>>> ExtendedContext.sqrt(Decimal('1'))
Decimal('1')
>>> ExtendedContext.sqrt(Decimal('1.0'))
Decimal('1.0')
>>> ExtendedContext.sqrt(Decimal('1.00'))
Decimal('1.0')
>>> ExtendedContext.sqrt(Decimal('7'))
Decimal('2.64575131')
>>> ExtendedContext.sqrt(Decimal('10'))
Decimal('3.16227766')
>>> ExtendedContext.sqrt(2)
Decimal('1.41421356')
>>> ExtendedContext.prec
9
Tr� rL )r� rH r� r) r) r+ rH U s z Context.sqrtc C s8 t |dd�}|j|| d�}|tkr0td| ��n|S dS )a& Return the difference between the two operands.
>>> ExtendedContext.subtract(Decimal('1.3'), Decimal('1.07'))
Decimal('0.23')
>>> ExtendedContext.subtract(Decimal('1.3'), Decimal('1.30'))
Decimal('0.00')
>>> ExtendedContext.subtract(Decimal('1.3'), Decimal('2.07'))
Decimal('-0.77')
>>> ExtendedContext.subtract(8, 5)
Decimal('3')
>>> ExtendedContext.subtract(Decimal(8), 5)
Decimal('3')
>>> ExtendedContext.subtract(8, Decimal(5))
Decimal('3')
Tr� rL r� N)r� r� r� rw r� r) r) r+ �subtractu s
zContext.subtractc C s t |dd�}|j| d�S )a� Convert to a string, using engineering notation if an exponent is needed.
Engineering notation has an exponent which is a multiple of 3. This
can leave up to 3 digits to the left of the decimal place and may
require the addition of either one or two trailing zeros.
The operation is not affected by the context.
>>> ExtendedContext.to_eng_string(Decimal('123E+1'))
'1.23E+3'
>>> ExtendedContext.to_eng_string(Decimal('123E+3'))
'123E+3'
>>> ExtendedContext.to_eng_string(Decimal('123E-10'))
'12.3E-9'
>>> ExtendedContext.to_eng_string(Decimal('-123E-12'))
'-123E-12'
>>> ExtendedContext.to_eng_string(Decimal('7E-7'))
'700E-9'
>>> ExtendedContext.to_eng_string(Decimal('7E+1'))
'70'
>>> ExtendedContext.to_eng_string(Decimal('0E+1'))
'0.00E+3'
Tr� rL )r� r� r� r) r) r+ r� � s zContext.to_eng_stringc C s t |dd�}|j| d�S )zyConverts a number to a string, using scientific notation.
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to_sci_string� s zContext.to_sci_stringc C s t |dd�}|j| d�S )ak Rounds to an integer.
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as using the quantize() operation using the given operand as the
left-hand-operand, 1E+0 as the right-hand-operand, and the precision
of the operand as the precision setting; Inexact and Rounded flags
are allowed in this operation. The rounding mode is taken from the
context.
>>> ExtendedContext.to_integral_exact(Decimal('2.1'))
Decimal('2')
>>> ExtendedContext.to_integral_exact(Decimal('100'))
Decimal('100')
>>> ExtendedContext.to_integral_exact(Decimal('100.0'))
Decimal('100')
>>> ExtendedContext.to_integral_exact(Decimal('101.5'))
Decimal('102')
>>> ExtendedContext.to_integral_exact(Decimal('-101.5'))
Decimal('-102')
>>> ExtendedContext.to_integral_exact(Decimal('10E+5'))
Decimal('1.0E+6')
>>> ExtendedContext.to_integral_exact(Decimal('7.89E+77'))
Decimal('7.89E+77')
>>> ExtendedContext.to_integral_exact(Decimal('-Inf'))
Decimal('-Infinity')
Tr� rL )r� rB r� r) r) r+ rB � s zContext.to_integral_exactc C s t |dd�}|j| d�S )aL Rounds to an integer.
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as using the quantize() operation using the given operand as the
left-hand-operand, 1E+0 as the right-hand-operand, and the precision
of the operand as the precision setting, except that no flags will
be set. The rounding mode is taken from the context.
>>> ExtendedContext.to_integral_value(Decimal('2.1'))
Decimal('2')
>>> ExtendedContext.to_integral_value(Decimal('100'))
Decimal('100')
>>> ExtendedContext.to_integral_value(Decimal('100.0'))
Decimal('100')
>>> ExtendedContext.to_integral_value(Decimal('101.5'))
Decimal('102')
>>> ExtendedContext.to_integral_value(Decimal('-101.5'))
Decimal('-102')
>>> ExtendedContext.to_integral_value(Decimal('10E+5'))
Decimal('1.0E+6')
>>> ExtendedContext.to_integral_value(Decimal('7.89E+77'))
Decimal('7.89E+77')
>>> ExtendedContext.to_integral_value(Decimal('-Inf'))
Decimal('-Infinity')
Tr� rL )r� r r� r) r) r+ r � s zContext.to_integral_value) NNNNNNNNN)N)rR )N)Xr4 r5 r6 r7 r� r� r� r� r� r� r� rN r� rC rM r� ri r� r� r� r� r� r� rD r� r� rm r� r� rM r� rN rJ rR r� r� r� rS r� r� r� rW r rV rW r= r� rY r� rZ r� r[ r\ rf ri rj rx rz r{ ry r� r~ r� r r� r� r� r� r� r; r� r� r� r r� r� r� r� r> r� r� rH r� r� r� rB r r� r) r) r) r+ r s� �
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rn c C s� | j |j k r|}| }n| }|}tt|j��}tt|j��}|j td|| d � }||j d |k rpd|_||_ | jd|j |j 9 _|j |_ | |fS )zcNormalizes op1, op2 to have the same exp and length of coefficient.
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r� r^ r. r� )rW rk re rV r� )r� r� rF Ztmpr� Ztmp_lenZ other_lenrW r) r) r+ r� s r� c C sb | dkr dS |dkr | d| S t t| ��}t|�t|�d�� }|| k rPdS | d| S dS )a Given integers n and e, return n * 10**e if it's an integer, else None.
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30000
>>> _decimal_lshift_exact(300, -999999999) # returns None
r& r� rR N)re rm rk �rstrip)r9 r� Zstr_nZval_nr) r) r+ r# ( s r# c C sB | dks|dkrt d��d}||kr>||| | d? }}q |S )z�Closest integer to the square root of the positive integer n. a is
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r& z3Both arguments to _sqrt_nearest should be positive.r. )rq )r9 r- rs r) r) r+ �
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r. r^ r) )r& r� rs r� r) r) r+ �_rshift_nearestL s r� c C s& t | |�\}}|d| |d@ |k S )zaClosest integer to a/b, a and b positive integers; rounds to even
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r^ r. )r� )r- rs r� r� r) r) r+ � _div_nearestT s r� r c C s� | | }d}||kr(t |�|| > |ksD||krxt |�|| ? |krxt|| d> |t||t||� |� �}|d7 }q tdtt|�� d| � }t||�}t||�}t|d dd�D ] }t||�t|| |� }q�t|| |�S )a� Integer approximation to M*log(x/M), with absolute error boundable
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between the approximation and the exact result is at most 22. For
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much smaller.r& r. ���r\ r� )rm r� r� r� rV rk re r ) r& �M�Lr) �R�TZyshift�wr� r) r) r+ �_ilog\ s" �� �
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z_Log10Memoize.getdigitsN)r4 r5 r6 r7 r� r� r) r) r) r+ r� � s r� c C s� t | |> | �}tdtt|�� d| � }t| |�}||> }t|d dd�D ]}t| || || �}qPt|d dd�D ]"}||d > }t||| |�}q||| S )z�Given integers x and M, M > 0, such that x/M is small in absolute
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fS )a5 Given integers xc, xe, yc and ye representing Decimals x = xc*10**xe and
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(c-1)*10**e < x**y < (c+1)*10**e
in other words, c*10**e is an approximation to x**y with p digits
of precision, and with an error in c of at most 1. (This is
almost, but not quite, the same as the error being < 1ulp: when c
== 10**(p-1) we can only guarantee error < 10ulp.)
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r. r& r� )rk re rm rd r� rT ) r' r( r* r+ r% rs Zlxcr� Zpcr� rW r) r) r+ r1 H s
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r& r. ra )rd r �_numbersZRationalrQ r: r; re rV r< � denominatorrP � numeratorZComplexr� r� ru r r4 r ri rv r� )r0 r� r� r1 r) r) r+ r� � s(
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minimumwidth: nonnegative integer giving minimum width
zeropad: boolean, indicating whether to pad with zeros
thousands_sep: string to use as thousands separator, or ''
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decimal_point: string to use for decimal point
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type: one of the characters 'eEfFgG%', or None
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Unless explicitly stated otherwise, the description below is true
both for AIFF-C files and AIFF files.
An AIFF-C file has the following structure.
+-----------------+
| FORM |
+-----------------+
| <size> |
+----+------------+
| | AIFC |
| +------------+
| | <chunks> |
| | . |
| | . |
| | . |
+----+------------+
An AIFF file has the string "AIFF" instead of "AIFC".
A chunk consists of an identifier (4 bytes) followed by a size (4 bytes,
big endian order), followed by the data. The size field does not include
the size of the 8 byte header.
The following chunk types are recognized.
FVER
<version number of AIFF-C defining document> (AIFF-C only).
MARK
<# of markers> (2 bytes)
list of markers:
<marker ID> (2 bytes, must be > 0)
<position> (4 bytes)
<marker name> ("pstring")
COMM
<# of channels> (2 bytes)
<# of sound frames> (4 bytes)
<size of the samples> (2 bytes)
<sampling frequency> (10 bytes, IEEE 80-bit extended
floating point)
in AIFF-C files only:
<compression type> (4 bytes)
<human-readable version of compression type> ("pstring")
SSND
<offset> (4 bytes, not used by this program)
<blocksize> (4 bytes, not used by this program)
<sound data>
A pstring consists of 1 byte length, a string of characters, and 0 or 1
byte pad to make the total length even.
Usage.
Reading AIFF files:
f = aifc.open(file, 'r')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods read(), seek(), and close().
In some types of audio files, if the setpos() method is not used,
the seek() method is not necessary.
This returns an instance of a class with the following public methods:
getnchannels() -- returns number of audio channels (1 for
mono, 2 for stereo)
getsampwidth() -- returns sample width in bytes
getframerate() -- returns sampling frequency
getnframes() -- returns number of audio frames
getcomptype() -- returns compression type ('NONE' for AIFF files)
getcompname() -- returns human-readable version of
compression type ('not compressed' for AIFF files)
getparams() -- returns a namedtuple consisting of all of the
above in the above order
getmarkers() -- get the list of marks in the audio file or None
if there are no marks
getmark(id) -- get mark with the specified id (raises an error
if the mark does not exist)
readframes(n) -- returns at most n frames of audio
rewind() -- rewind to the beginning of the audio stream
setpos(pos) -- seek to the specified position
tell() -- return the current position
close() -- close the instance (make it unusable)
The position returned by tell(), the position given to setpos() and
the position of marks are all compatible and have nothing to do with
the actual position in the file.
The close() method is called automatically when the class instance
is destroyed.
Writing AIFF files:
f = aifc.open(file, 'w')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods write(), tell(), seek(), and
close().
This returns an instance of a class with the following public methods:
aiff() -- create an AIFF file (AIFF-C default)
aifc() -- create an AIFF-C file
setnchannels(n) -- set the number of channels
setsampwidth(n) -- set the sample width
setframerate(n) -- set the frame rate
setnframes(n) -- set the number of frames
setcomptype(type, name)
-- set the compression type and the
human-readable compression type
setparams(tuple)
-- set all parameters at once
setmark(id, pos, name)
-- add specified mark to the list of marks
tell() -- return current position in output file (useful
in combination with setmark())
writeframesraw(data)
-- write audio frames without pathing up the
file header
writeframes(data)
-- write audio frames and patch up the file header
close() -- patch up the file header and close the
output file
You should set the parameters before the first writeframesraw or
writeframes. The total number of frames does not need to be set,
but when it is set to the correct value, the header does not have to
be patched up.
It is best to first set all parameters, perhaps possibly the
compression type, and then write audio frames using writeframesraw.
When all frames have been written, either call writeframes(b'') or
close() to patch up the sizes in the header.
Marks can be added anytime. If there are any marks, you must call
close() after all frames have been written.
The close() method is called automatically when the class instance
is destroyed.
When a file is opened with the extension '.aiff', an AIFF file is
written, otherwise an AIFF-C file is written. This default can be
changed by calling aiff() or aifc() before the first writeframes or
writeframesraw.
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�Z.d�d�d�Z/dS )�a0 This module provides socket operations and some related functions.
On Unix, it supports IP (Internet Protocol) and Unix domain sockets.
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Functions:
socket() -- create a new socket object
socketpair() -- create a pair of new socket objects [*]
fromfd() -- create a socket object from an open file descriptor [*]
fromshare() -- create a socket object from data received from socket.share() [*]
gethostname() -- return the current hostname
gethostbyname() -- map a hostname to its IP number
gethostbyaddr() -- map an IP number or hostname to DNS info
getservbyname() -- map a service name and a protocol name to a port number
getprotobyname() -- map a protocol name (e.g. 'tcp') to a number
ntohs(), ntohl() -- convert 16, 32 bit int from network to host byte order
htons(), htonl() -- convert 16, 32 bit int from host to network byte order
inet_aton() -- convert IP addr string (123.45.67.89) to 32-bit packed format
inet_ntoa() -- convert 32-bit packed format IP to string (123.45.67.89)
socket.getdefaulttimeout() -- get the default timeout value
socket.setdefaulttimeout() -- set the default timeout value
create_connection() -- connects to an address, with an optional timeout and
optional source address.
[*] not available on all platforms!
Special objects:
SocketType -- type object for socket objects
error -- exception raised for I/O errors
has_ipv6 -- boolean value indicating if IPv6 is supported
IntEnum constants:
AF_INET, AF_UNIX -- socket domains (first argument to socket() call)
SOCK_STREAM, SOCK_DGRAM, SOCK_RAW -- socket types (second argument)
Integer constants:
Many other constants may be defined; these may be used in calls to
the setsockopt() and getsockopt() methods.
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+ zInvalid QoS filter style.i + i + zIncorrect QoS filter count.i
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r2 | �|||� Y S X dS )a_ sendfile(file[, offset[, count]]) -> sent
Send a file until EOF is reached by using high-performance
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If os.sendfile() is not available (e.g. Windows) or file is
not a regular file socket.send() will be used instead.
*offset* tells from where to start reading the file.
If specified, *count* is the total number of bytes to transmit
as opposed to sending the file until EOF is reached.
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which case file.tell() can be used to figure out the number of
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r� )rA r r� �seekabler5 r� r r r� � s zSocketIO.seekablec C s | � � | j�� S )z=Return the file descriptor of the underlying socket.
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Then running the module as a script will cause the examples in the
docstrings to get executed and verified:
python M.py
This won't display anything unless an example fails, in which case the
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(why not stderr? because stderr is a lame hack <0.2 wink>), and the final
line of output is "Test failed.".
Run it with the -v switch instead:
python M.py -v
and a detailed report of all examples tried is printed to stdout, along
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You can force verbose mode by passing "verbose=True" to testmod, or prohibit
it by passing "verbose=False". In either of those cases, sys.argv is not
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There are a variety of other ways to run doctests, including integration
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A single doctest example, consisting of source code and expected
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Given the lines of a source string (including prompts and
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followed by a space character. If any line is not followed by
a space character, then raise ValueError.
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Check that every line in the given list starts with the given
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A class used to extract the DocTests that are relevant to a given
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objects. Doctests can currently be extracted from the following
object types: modules, functions, classes, methods, staticmethods,
classmethods, and properties.
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Create a new doctest finder.
The optional argument `parser` specifies a class or
function that should be used to create new DocTest objects (or
objects that implement the same interface as DocTest). The
signature for this factory function should match the signature
of the DocTest constructor.
If the optional argument `recurse` is false, then `find` will
only examine the given object, and not any contained objects.
If the optional argument `exclude_empty` is false, then `find`
will include tests for objects with empty docstrings.
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Return a list of the DocTests that are defined by the given
object's docstring, or by any of its contained objects'
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the test finder will attempt to automatically determine the
correct module. The object's module is used:
- As a default namespace, if `globs` is not specified.
- To prevent the DocTestFinder from extracting DocTests
from objects that are imported from other modules.
- To find the name of the file containing the object.
- To help find the line number of the object within its
file.
Contained objects whose module does not match `module` are ignored.
If `module` is False, no attempt to find the module will be made.
This is obscure, of use mostly in tests: if `module` is False, or
is None but cannot be found automatically, then all objects are
considered to belong to the (non-existent) module, so all contained
objects will (recursively) be searched for doctests.
The globals for each DocTest is formed by combining `globs`
and `extraglobs` (bindings in `extraglobs` override bindings
in `globs`). A new copy of the globals dictionary is created
for each DocTest. If `globs` is not specified, then it
defaults to the module's `__dict__`, if specified, or {}
otherwise. If `extraglobs` is not specified, then it defaults
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Return true if the given object is defined in the given
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Find tests for the given object and any contained objects, and
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Return a DocTest for the given object, if it defines a docstring;
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�zDocTestFinder._get_testc C s d}t �|�rd}t �|�rb|dkr(dS t�dt|dd� �}t|�D ]\}}|�|�rF|} qbqFt �|�rr|j }t �
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Return a line number of the given object's docstring. Note:
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Nr" z^\s*class\s*%s\br6 �-�co_firstlinenor& z(^|.*:)\s*\w*("|\'))r7 r8 r� r[ r� r0 r� r� Zismethodr r� �__code__Z istraceback�tb_frameZisframe�f_codeZiscode�ranger) )rj r� r� r� Zpatr� r r, r, r- r 4 s>
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A class used to run DocTest test cases, and accumulate statistics.
The `run` method is used to process a single DocTest case. It
returns a tuple `(f, t)`, where `t` is the number of test cases
tried, and `f` is the number of test cases that failed.
>>> tests = DocTestFinder().find(_TestClass)
>>> runner = DocTestRunner(verbose=False)
>>> tests.sort(key = lambda test: test.name)
>>> for test in tests:
... print(test.name, '->', runner.run(test))
_TestClass -> TestResults(failed=0, attempted=2)
_TestClass.__init__ -> TestResults(failed=0, attempted=2)
_TestClass.get -> TestResults(failed=0, attempted=2)
_TestClass.square -> TestResults(failed=0, attempted=1)
The `summarize` method prints a summary of all the test cases that
have been run by the runner, and returns an aggregated `(f, t)`
tuple:
>>> runner.summarize(verbose=1)
4 items passed all tests:
2 tests in _TestClass
2 tests in _TestClass.__init__
2 tests in _TestClass.get
1 tests in _TestClass.square
7 tests in 4 items.
7 passed and 0 failed.
Test passed.
TestResults(failed=0, attempted=7)
The aggregated number of tried examples and failed examples is
also available via the `tries` and `failures` attributes:
>>> runner.tries
7
>>> runner.failures
0
The comparison between expected outputs and actual outputs is done
by an `OutputChecker`. This comparison may be customized with a
number of option flags; see the documentation for `testmod` for
more information. If the option flags are insufficient, then the
comparison may also be customized by passing a subclass of
`OutputChecker` to the constructor.
The test runner's display output can be controlled in two ways.
First, an output function (`out) can be passed to
`TestRunner.run`; this function will be called with strings that
should be displayed. It defaults to `sys.stdout.write`. If
capturing the output is not sufficient, then the display output
can be also customized by subclassing DocTestRunner, and
overriding the methods `report_start`, `report_success`,
`report_unexpected_exception`, and `report_failure`.
zF**********************************************************************Nr" c C sN |pt � | _|dkr dtjk}|| _|| _|| _d| _d| _i | _ t
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Create a new test runner.
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should be used to compare the expected outputs and actual
outputs of doctest examples.
Optional keyword arg 'verbose' prints lots of stuff if true,
only failures if false; by default, it's true iff '-v' is in
sys.argv.
Optional argument `optionflags` can be used to control how the
test runner compares expected output to actual output, and how
it displays failures. See the documentation for `testmod` for
more information.
N�-vr" ) r �_checkerr> r� r� � optionflags�original_optionflags�tries�failures�_name2ftrg �_fakeout)rj �checkerr� r r, r, r- r� � s
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Report that the given example ran successfully. (Only
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Report that the given example failed.
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Run the examples in `test`. Write the outcome of each example
with one of the `DocTestRunner.report_*` methods, using the
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Record the fact that the given DocTest (`test`) generated `f`
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r� N)r r/ r+ r r )rj r rW �t�f2�t2r, r, r- Z__record_outcome| s z DocTestRunner.__record_outcomez.<doctest (?P<name>.+)\[(?P<examplenum>\d+)\]>$c C sV | j �|�}|rF|�d�| jjkrF| jjt|�d�� }|jjdd�S | � ||�S d S )Nr+ r4 T��keepends)
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Run the examples in `test`, and display the results using the
writer function `out`.
The examples are run in the namespace `test.globs`. If
`clear_globs` is true (the default), then this namespace will
be cleared after the test runs, to help with garbage
collection. If you would like to examine the namespace after
the test completes, then use `clear_globs=False`.
`compileflags` gives the set of flags that should be used by
the Python compiler when running the examples. If not
specified, then it will default to the set of future-import
flags that apply to `globs`.
The output of each example is checked using
`DocTestRunner.check_output`, and the results are formatted by
the `DocTestRunner.report_*` methods.
N�utf-8c s t | �� d�� �} ��| � d S )N�backslashreplace)r: �encode�write)r] �rN r� r, r- r� � s z DocTestRunner.run.<locals>.outr" )r r3 r1 r> r� rN �lowerrC r �gettracer� r� r� r- �resetr� r� r> �*_DocTestRunner__patched_linecache_getlines� displayhook�__displayhook__�settrace�clear�builtins�_�_DocTestRunner__run) rj r r1 r� � clear_globsZ
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Print a summary of all the test cases that have been run by
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summary is. If the verbosity is not specified, then the
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Nr" zitems had no tests:z zitems passed all tests:z %3d tests in %szitems had failures:z %3d of %3d in %sztests inzitems.z
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A class used to check the whether the actual output from a doctest
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and returns true if they match; and `output_difference`, which
returns a string describing the differences between two outputs.
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�ASCIIrA )r: rB )rj r] r, r, r- �_toAscii( s zOutputChecker._toAsciic C s� | � |�}| � |�}||kr dS |t@ sH||fdkr8dS ||fdkrHdS |t@ s�t�dt�t� d|�}t�dd|�}||kr�dS |t@ r�d�|� � �}d�|� � �}||kr�dS |t
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Return True iff the actual output from an example (`got`)
matches the expected output (`want`). These strings are
always considered to match if they are identical; but
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documentation for `TestRunner` for more information about
option flags.
T)zTrue
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z (?m)^%s\s*?$r� z(?m)^[^\S\n]+$rZ F) rW r r r[ r\ �escape�BLANKLINE_MARKERr r� rt r r| �rj rw rx r r, r, r- r+ . s4
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zOutputChecker.check_outputc C s< |t tB tB @ sdS |t@ r dS |�d�dko:|�d�dkS )NFTrF r4 )r r
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C s( |j }|t@ s t�dt|�}| �|||�r�|jdd�}|jdd�}|t@ rptj ||dd�}t
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Return a string describing the differences between the
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output (`got`). `optionflags` is the set of option flags used
to compare `want` and `got`.
z(?m)^[ ]*(?=
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?c @ s e Zd ZdZdd� Zdd� ZdS )r z�A DocTest example has failed in debugging mode.
The exception instance has variables:
- test: the DocTest object being run
- example: the Example object that failed
- got: the actual output
c C s || _ || _|| _d S rl )r r rx )rj r r rx r, r, r- r� � s zDocTestFailure.__init__c C s
t | j�S rl �r: r r� r, r, r- �__str__� s zDocTestFailure.__str__N�r6 rp rq r� r� r` r, r, r, r- r � s
c @ s e Zd ZdZdd� Zdd� ZdS )r z�A DocTest example has encountered an unexpected exception
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c C s || _ || _|| _d S rl )r r rd )rj r r rd r, r, r- r� � s z UnexpectedException.__init__c C s
t | j�S rl r_ r� r, r, r- r` � s zUnexpectedException.__str__Nra r, r, r, r- r � s
c @ s* e Zd ZdZd
dd�Zdd� Zdd � ZdS ) r a� Run doc tests but raise an exception as soon as there is a failure.
If an unexpected exception occurs, an UnexpectedException is raised.
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>>> runner = DebugRunner(verbose=False)
>>> test = DocTestParser().get_doctest('>>> raise KeyError\n42',
... {}, 'foo', 'foo.py', 0)
>>> try:
... runner.run(test)
... except UnexpectedException as f:
... failure = f
>>> failure.test is test
True
>>> failure.example.want
'42\n'
>>> exc_info = failure.exc_info
>>> raise exc_info[1] # Already has the traceback
Traceback (most recent call last):
...
KeyError
We wrap the original exception to give the calling application
access to the test and example information.
If the output doesn't match, then a DocTestFailure is raised:
>>> test = DocTestParser().get_doctest('''
... >>> x = 1
... >>> x
... 2
... ''', {}, 'foo', 'foo.py', 0)
>>> try:
... runner.run(test)
... except DocTestFailure as f:
... failure = f
DocTestFailure objects provide access to the test:
>>> failure.test is test
True
As well as to the example:
>>> failure.example.want
'2\n'
and the actual output:
>>> failure.got
'1\n'
If a failure or error occurs, the globals are left intact:
>>> del test.globs['__builtins__']
>>> test.globs
{'x': 1}
>>> test = DocTestParser().get_doctest('''
... >>> x = 2
... >>> raise KeyError
... ''', {}, 'foo', 'foo.py', 0)
>>> runner.run(test)
Traceback (most recent call last):
...
doctest.UnexpectedException: <DocTest foo from foo.py:0 (2 examples)>
>>> del test.globs['__builtins__']
>>> test.globs
{'x': 2}
But the globals are cleared if there is no error:
>>> test = DocTestParser().get_doctest('''
... >>> x = 2
... ''', {}, 'foo', 'foo.py', 0)
>>> runner.run(test)
TestResults(failed=0, attempted=1)
>>> test.globs
{}
NTc C s$ t �| |||d�}|r |j�� |S )NF)r rQ r1 rL )rj r r1 r� rP �rr, r, r- rQ 3 s
zDebugRunner.runc C s t |||��d S rl )r r' r, r, r- r( 9 s z'DebugRunner.report_unexpected_exceptionc C s t |||��d S rl )r r" r, r, r- r& < s zDebugRunner.report_failure)NNT)r6 rp rq r� rQ r( r& r, r, r, r- r � s Z
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m=None, name=None, globs=None, verbose=None, report=True,
optionflags=0, extraglobs=None, raise_on_error=False,
exclude_empty=False
Test examples in docstrings in functions and classes reachable
from module m (or the current module if m is not supplied), starting
with m.__doc__.
Also test examples reachable from dict m.__test__ if it exists and is
not None. m.__test__ maps names to functions, classes and strings;
function and class docstrings are tested even if the name is private;
strings are tested directly, as if they were docstrings.
Return (#failures, #tests).
See help(doctest) for an overview.
Optional keyword arg "name" gives the name of the module; by default
use m.__name__.
Optional keyword arg "globs" gives a dict to be used as the globals
when executing examples; by default, use m.__dict__. A copy of this
dict is actually used for each docstring, so that each docstring's
examples start with a clean slate.
Optional keyword arg "extraglobs" gives a dictionary that should be
merged into the globals that are used to execute examples. By
default, no extra globals are used. This is new in 2.4.
Optional keyword arg "verbose" prints lots of stuff if true, prints
only failures if false; by default, it's true iff "-v" is in sys.argv.
Optional keyword arg "report" prints a summary at the end when true,
else prints nothing at the end. In verbose mode, the summary is
detailed, else very brief (in fact, empty if all tests passed).
Optional keyword arg "optionflags" or's together module constants,
and defaults to 0. This is new in 2.3. Possible values (see the
docs for details):
DONT_ACCEPT_TRUE_FOR_1
DONT_ACCEPT_BLANKLINE
NORMALIZE_WHITESPACE
ELLIPSIS
SKIP
IGNORE_EXCEPTION_DETAIL
REPORT_UDIFF
REPORT_CDIFF
REPORT_NDIFF
REPORT_ONLY_FIRST_FAILURE
Optional keyword arg "raise_on_error" raises an exception on the
first unexpected exception or failure. This allows failures to be
post-mortem debugged.
Advanced tomfoolery: testmod runs methods of a local instance of
class doctest.Tester, then merges the results into (or creates)
global Tester instance doctest.master. Methods of doctest.master
can be called directly too, if you want to do something unusual.
Passing report=0 to testmod is especially useful then, to delay
displaying a summary. Invoke doctest.master.summarize(verbose)
when you're done fiddling.
Nr� z testmod: module required; %r)r� �r� r �r1 r� )r> r? r/ r7 r8 rB r6 r r r rv rQ rS �masterrU r% r r ) r� r+ r1 r� �reportr r� �raise_on_errorr� �finder�runnerr r, r, r- r H s$ E
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Test examples in the given file. Return (#failures, #tests).
Optional keyword arg "module_relative" specifies how filenames
should be interpreted:
- If "module_relative" is True (the default), then "filename"
specifies a module-relative path. By default, this path is
relative to the calling module's directory; but if the
"package" argument is specified, then it is relative to that
package. To ensure os-independence, "filename" should use
"/" characters to separate path segments, and should not
be an absolute path (i.e., it may not begin with "/").
- If "module_relative" is False, then "filename" specifies an
os-specific path. The path may be absolute or relative (to
the current working directory).
Optional keyword arg "name" gives the name of the test; by default
use the file's basename.
Optional keyword argument "package" is a Python package or the
name of a Python package whose directory should be used as the
base directory for a module relative filename. If no package is
specified, then the calling module's directory is used as the base
directory for module relative filenames. It is an error to
specify "package" if "module_relative" is False.
Optional keyword arg "globs" gives a dict to be used as the globals
when executing examples; by default, use {}. A copy of this dict
is actually used for each docstring, so that each docstring's
examples start with a clean slate.
Optional keyword arg "extraglobs" gives a dictionary that should be
merged into the globals that are used to execute examples. By
default, no extra globals are used.
Optional keyword arg "verbose" prints lots of stuff if true, prints
only failures if false; by default, it's true iff "-v" is in sys.argv.
Optional keyword arg "report" prints a summary at the end when true,
else prints nothing at the end. In verbose mode, the summary is
detailed, else very brief (in fact, empty if all tests passed).
Optional keyword arg "optionflags" or's together module constants,
and defaults to 0. Possible values (see the docs for details):
DONT_ACCEPT_TRUE_FOR_1
DONT_ACCEPT_BLANKLINE
NORMALIZE_WHITESPACE
ELLIPSIS
SKIP
IGNORE_EXCEPTION_DETAIL
REPORT_UDIFF
REPORT_CDIFF
REPORT_NDIFF
REPORT_ONLY_FIRST_FAILURE
Optional keyword arg "raise_on_error" raises an exception on the
first unexpected exception or failure. This allows failures to be
post-mortem debugged.
Optional keyword arg "parser" specifies a DocTestParser (or
subclass) that should be used to extract tests from the files.
Optional keyword arg "encoding" specifies an encoding that should
be used to convert the file to unicode.
Advanced tomfoolery: testmod runs methods of a local instance of
class doctest.Tester, then merges the results into (or creates)
global Tester instance doctest.master. Methods of doctest.master
can be called directly too, if you want to do something unusual.
Passing report=0 to testmod is especially useful then, to delay
displaying a summary. Invoke doctest.master.summarize(verbose)
when you're done fiddling.
�8Package may only be specified for module-relative paths.r@ Nr6 r� rc r" )r� rX r� r� �basenamer� r� r r r� rQ rS re rU r% r r )rT rV r+ rU r1 r� rf r r� rg r� rN �textri r r, r, r- r � s2 R�
�NoNamec C s@ t |dd�}t||d�}|j| ||d�D ]}|j||d� q(dS )ar
Test examples in the given object's docstring (`f`), using `globs`
as globals. Optional argument `name` is used in failure messages.
If the optional argument `verbose` is true, then generate output
even if there are no failures.
`compileflags` gives the set of flags that should be used by the
Python compiler when running the examples. If not specified, then
it will default to the set of future-import flags that apply to
`globs`.
Optional keyword arg `optionflags` specifies options for the
testing and output. See the documentation for `testmod` for more
information.
F)r� r� rc )r1 )r1 N)r r rv rQ ) rW r1 r� r+ r1 r rh ri r r, r, r- r + s c C s" | t @ | krtd| ��t}| a|S )a? Sets the unittest option flags.
The old flag is returned so that a runner could restore the old
value if it wished to:
>>> import doctest
>>> old = doctest._unittest_reportflags
>>> doctest.set_unittest_reportflags(REPORT_NDIFF |
... REPORT_ONLY_FIRST_FAILURE) == old
True
>>> doctest._unittest_reportflags == (REPORT_NDIFF |
... REPORT_ONLY_FIRST_FAILURE)
True
Only reporting flags can be set:
>>> doctest.set_unittest_reportflags(ELLIPSIS)
Traceback (most recent call last):
...
ValueError: ('Only reporting flags allowed', 8)
>>> doctest.set_unittest_reportflags(old) == (REPORT_NDIFF |
... REPORT_ONLY_FIRST_FAILURE)
True
z Only reporting flags allowed)r
r� �_unittest_reportflags)r2 �oldr, r, r- r H s
c @ sl e Zd Zddd�Zdd� Zdd� Zd d
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dd� Z dd� Z e
jZdd� ZdS )� DocTestCaser" Nc C s. t j�| � || _|| _|| _|| _|| _d S rl )�unittest�TestCaser� �_dt_optionflags� _dt_checker�_dt_test� _dt_setUp� _dt_tearDown)rj r r �setUp�tearDownr r, r, r- r� n s zDocTestCase.__init__c C s | j }| jd k r| �|� d S rl )ru rv �rj r r, r, r- rx x s
zDocTestCase.setUpc C s( | j }| jd k r| �|� |j�� d S rl )ru rw r1 rL rz r, r, r- ry ~ s
zDocTestCase.tearDownc C s~ | j }tj}t� }| j}|t@ s(|tO }t|| jdd�}z d|_ |j
||j dd�\}}W 5 |t_X |rz| � | �
|�� ���d S )NF�r r r� zF----------------------------------------------------------------------)r� rP )ru r> r� r# rs r
rn r rt r* rQ rC ZfailureException�format_failurerc )rj r ro �newr ri r r r, r, r- �runTest� s( � �zDocTestCase.runTestc C sP | j }|jd krd}n
d|j }d�|j�d�dd � �}d|j|j|||f S )Nzunknown line numberz%sr� rr z:Failed doctest test for %s
File "%s", line %s, in %s
%s)ru r� r� r+ rt rT )rj �errr r� Zlnamer, r, r- r| � s
�zDocTestCase.format_failurec C s6 | � � t| j| jdd�}|j| jdd� | �� dS )a� Run the test case without results and without catching exceptions
The unit test framework includes a debug method on test cases
and test suites to support post-mortem debugging. The test code
is run in such a way that errors are not caught. This way a
caller can catch the errors and initiate post-mortem debugging.
The DocTestCase provides a debug method that raises
UnexpectedException errors if there is an unexpected
exception:
>>> test = DocTestParser().get_doctest('>>> raise KeyError\n42',
... {}, 'foo', 'foo.py', 0)
>>> case = DocTestCase(test)
>>> try:
... case.debug()
... except UnexpectedException as f:
... failure = f
The UnexpectedException contains the test, the example, and
the original exception:
>>> failure.test is test
True
>>> failure.example.want
'42\n'
>>> exc_info = failure.exc_info
>>> raise exc_info[1] # Already has the traceback
Traceback (most recent call last):
...
KeyError
If the output doesn't match, then a DocTestFailure is raised:
>>> test = DocTestParser().get_doctest('''
... >>> x = 1
... >>> x
... 2
... ''', {}, 'foo', 'foo.py', 0)
>>> case = DocTestCase(test)
>>> try:
... case.debug()
... except DocTestFailure as f:
... failure = f
DocTestFailure objects provide access to the test:
>>> failure.test is test
True
As well as to the example:
>>> failure.example.want
'2\n'
and the actual output:
>>> failure.got
'1\n'
Fr{ )rP N)rx r rs rt rQ ru ry )rj ri r, r, r- r! � s B �zDocTestCase.debugc C s | j jS rl �ru r+ r� r, r, r- r� � s zDocTestCase.idc C sP t | �t |�k rtS | j|jkoN| j|jkoN| j|jkoN| j|jkoN| j|jkS rl )r� r� ru rs rv rw rt r� r, r, r- r� � s
�
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�
�zDocTestCase.__eq__c C s t | j| j| j| jf�S rl )r� rs rv rw rt r� r, r, r- r� � s �zDocTestCase.__hash__c C s, | j j�d�}d|d d�|d d� �f S )Nr� z%s (%s)rr )ru r+ rt r� )rj r+ r, r, r- r� s zDocTestCase.__repr__c C s d| j j S )Nz Doctest: r� r� r, r, r- �shortDescription s z DocTestCase.shortDescription)r" NNN)r6 rp rq r� rx ry r~ r| r! r� r� r� r� r r` r� r, r, r, r- rp l s �
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�SkipDocTestCasec C s || _ t�| d � d S rl )rC rp r� )rj rC r, r, r- r�
s zSkipDocTestCase.__init__c C s | � d� d S )Nz-DocTestSuite will not work with -O2 and above)ZskipTestr� r, r, r- rx s zSkipDocTestCase.setUpc C s d S rl r, r� r, r, r- � test_skip s zSkipDocTestCase.test_skipc C s d| j j S )NzSkipping tests from %s)rC r6 r� r, r, r- r� s z SkipDocTestCase.shortDescriptionN)r6 rp rq r� rx r� r� r` r, r, r, r- r� s
r� c @ s e Zd Zdd� ZdS )�
_DocTestSuitec C s d S rl r, )rj �indexr, r, r- �_removeTestAtIndex s z _DocTestSuite._removeTestAtIndexN)r6 rp rq r� r, r, r, r- r� s r� c K s� |dkrt � }t| �} |j| ||d�}|sNtjjdkrNt� }|�t| �� |S |� � t� }|D ]T}t
|j �dkrtq`|j s�| j
}|dd� dkr�|dd� }||_ |�t|f|�� q`|S )a
Convert doctest tests for a module to a unittest test suite.
This converts each documentation string in a module that
contains doctest tests to a unittest test case. If any of the
tests in a doc string fail, then the test case fails. An exception
is raised showing the name of the file containing the test and a
(sometimes approximate) line number.
The `module` argument provides the module to be tested. The argument
can be either a module or a module name.
If no argument is given, the calling module is used.
A number of options may be provided as keyword arguments:
setUp
A set-up function. This is called before running the
tests in each file. The setUp function will be passed a DocTest
object. The setUp function can access the test globals as the
globs attribute of the test passed.
tearDown
A tear-down function. This is called after running the
tests in each file. The tearDown function will be passed a DocTest
object. The tearDown function can access the test globals as the
globs attribute of the test passed.
globs
A dictionary containing initial global variables for the tests.
optionflags
A set of doctest option flags expressed as an integer.
Nrd r4 r" r
r rr )r rD rv r> r2 �optimizer� �addTestr� r� r) r� rT r� rp ) rC r1 r� Z test_finderr� r� �suiter rT r, r, r- r # s( % c @ s$ e Zd Zdd� Zdd� Zdd� ZdS )� DocFileCasec C s d� | jj�d��S )NrN r� )r� ru r+ rt r� r, r, r- r� e s zDocFileCase.idc C s | j jS rl )ru rT r� r, r, r- r� h s zDocFileCase.__repr__c C s d| j j| j j|f S )Nz2Failed doctest test for %s
File "%s", line 0
%s)ru r+ rT )rj r r, r, r- r| k s �zDocFileCase.format_failureN)r6 rp rq r� r� r| r, r, r, r- r� c s r� c
K sv |d kri }n|� � }|r&|s&td��t| |||p4d�\}} d|krL| |d< tj�| �}|�|||| d�} t| f|�S )Nrj r@ r� r" )r� r� rX r� r� rk r� r� )
r� rV rU r1 r� rN r� �docr+ r r, r, r- � DocFileTestp s � r� c O sD t � }|�dd�r$t|�d��|d< | D ]}|�t|f|�� q(|S )a� A unittest suite for one or more doctest files.
The path to each doctest file is given as a string; the
interpretation of that string depends on the keyword argument
"module_relative".
A number of options may be provided as keyword arguments:
module_relative
If "module_relative" is True, then the given file paths are
interpreted as os-independent module-relative paths. By
default, these paths are relative to the calling module's
directory; but if the "package" argument is specified, then
they are relative to that package. To ensure os-independence,
"filename" should use "/" characters to separate path
segments, and may not be an absolute path (i.e., it may not
begin with "/").
If "module_relative" is False, then the given file paths are
interpreted as os-specific paths. These paths may be absolute
or relative (to the current working directory).
package
A Python package or the name of a Python package whose directory
should be used as the base directory for module relative paths.
If "package" is not specified, then the calling module's
directory is used as the base directory for module relative
filenames. It is an error to specify "package" if
"module_relative" is False.
setUp
A set-up function. This is called before running the
tests in each file. The setUp function will be passed a DocTest
object. The setUp function can access the test globals as the
globs attribute of the test passed.
tearDown
A tear-down function. This is called after running the
tests in each file. The tearDown function will be passed a DocTest
object. The tearDown function can access the test globals as the
globs attribute of the test passed.
globs
A dictionary containing initial global variables for the tests.
optionflags
A set of doctest option flags expressed as an integer.
parser
A DocTestParser (or subclass) that should be used to extract
tests from the files.
encoding
An encoding that will be used to convert the files to unicode.
rV TrU )r� r/ rD r� r� )�paths�kwr� r� r, r, r- r � s 8 c C s� g }t � �| �D ]x}t|t�rh|�|jdd� � |j}|r�|�d� |dd� |�d�dd� D �7 }q|dd� |�d�dd� D �7 }q|r�|d dkr�|�� q�|r�|d dkr�|�d � q�d� |�d S )
aw Extract script from text with examples.
Converts text with examples to a Python script. Example input is
converted to regular code. Example output and all other words
are converted to comments:
>>> text = '''
... Here are examples of simple math.
...
... Python has super accurate integer addition
...
... >>> 2 + 2
... 5
...
... And very friendly error messages:
...
... >>> 1/0
... To Infinity
... And
... Beyond
...
... You can use logic if you want:
...
... >>> if 0:
... ... blah
... ... blah
... ...
...
... Ho hum
... '''
>>> print(script_from_examples(text))
# Here are examples of simple math.
#
# Python has super accurate integer addition
#
2 + 2
# Expected:
## 5
#
# And very friendly error messages:
#
1/0
# Expected:
## To Infinity
## And
## Beyond
#
# You can use logic if you want:
#
if 0:
blah
blah
#
# Ho hum
<BLANKLINE>
Nrr z # Expected:c S s g | ] }d | �qS )z## r, r� r, r, r- r�
s z(script_from_examples.<locals>.<listcomp>rF c S s g | ] }t |��qS r, )r� r� r, r, r- r�
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r r� r9 r r� r� rw rt �popr� )r] r� Zpiecerw r, r, r- r � s :
"�
c sJ t | �} t� �| �}� fdd�|D �}|s4t� d��|d }t|j�}|S )a Extract the test sources from a doctest docstring as a script.
Provide the module (or dotted name of the module) containing the
test to be debugged and the name (within the module) of the object
with the doc string with tests to be debugged.
c s g | ]}|j � kr|�qS r, r* )r� r6 r* r, r- r� .
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z testsource.<locals>.<listcomp>znot found in testsr" )rD r rv r� r r� )rC r+ r� r �testsrcr, r* r- r %
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c C s t | �}t|||� dS )z4Debug a single doctest docstring, in argument `src`'N)r � debug_script)�src�pmr1 r� r, r, r- r 5
s c C s� ddl }|r|�� }ni }|rvzt| ||� W q� tt�� d � |jdd�}|�� |�dt�� d � Y q�X n|jdd�� d| ||� dS )z7Debug a test script. `src` is the script, as a string.r" Nr& T)r� r4 zexec(%r))
r� r� r, r r> rd r� rG Z interactionrQ )r� r� r1 r� �pr, r, r- r� :
s
r� c C s$ t | �} t| |�}t||| j� dS )z�Debug a single doctest docstring.
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test to be debugged and the name (within the module) of the object
with the docstring with tests to be debugged.
N)rD r r� r� )rC r+ r� r� r, r, r- r! N
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_TestClassz�
A pointless class, for sanity-checking of docstring testing.
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square()
get()
>>> _TestClass(13).get() + _TestClass(-12).get()
1
>>> hex(_TestClass(13).square().get())
'0xa9'
c C s
|| _ dS )z�val -> _TestClass object with associated value val.
>>> t = _TestClass(123)
>>> print(t.get())
123
N�r )rj r r, r, r- r� j
s z_TestClass.__init__c C s | j d | _ | S )zosquare() -> square TestClass's associated value
>>> _TestClass(13).square().get()
169
r4 r� r� r, r, r- �squaret
s z_TestClass.squarec C s | j S )z~get() -> return TestClass's associated value.
>>> x = _TestClass(-42)
>>> print(x.get())
-42
r� r� r, r, r- r/ ~
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Example of a string object, searched as-is.
>>> x = 1; y = 2
>>> x + y, x * y
(3, 2)
a�
In 2.2, boolean expressions displayed
0 or 1. By default, we still accept
them. This can be disabled by passing
DONT_ACCEPT_TRUE_FOR_1 to the new
optionflags argument.
>>> 4 == 4
1
>>> 4 == 4
True
>>> 4 > 4
0
>>> 4 > 4
False
z�
Blank lines can be marked with <BLANKLINE>:
>>> print('foo\n\nbar\n')
foo
<BLANKLINE>
bar
<BLANKLINE>
z�
If the ellipsis flag is used, then '...' can be used to
elide substrings in the desired output:
>>> print(list(range(1000))) #doctest: +ELLIPSIS
[0, 1, 2, ..., 999]
a�
If the whitespace normalization flag is used, then
differences in whitespace are ignored.
>>> print(list(range(30))) #doctest: +NORMALIZE_WHITESPACE
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26,
27, 28, 29]
)r� r� zbool-int equivalencez blank linesZellipsiszwhitespace normalizationc C s" dd l } | jdd�}|jdddddd � |jd
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d� |jddddd� |jdddd� |�� }|j}|j}d}|jD ]}|t| O }q�|j r�|t
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} nt|d||d�\}
} |
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PurePath.namec C sD | j }|�d�}d| k r,t|�d k r<n n ||d� S dS dS )z{
The final component's last suffix, if any.
This includes the leading period. For example: '.txt'
r1 r rB Nr0 �r� �rfindrV �r. r� rN r! r! r" �suffix, s
zPurePath.suffixc C s: | j }|�d�rg S |�d�}dd� |�d�dd� D �S )z�
A list of the final component's suffixes, if any.
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r1 c S s g | ] }d | �qS )r1 r! )rM r% r! r! r" rb E s z%PurePath.suffixes.<locals>.<listcomp>rB N)r� r� rX r6 �r. r� r! r! r" �suffixes: s
zPurePath.suffixesc C sD | j }|�d�}d| k r,t|�d k r<n n |d|� S |S dS )z0The final path component, minus its last suffix.r1 r rB Nr" r$ r! r! r" �stemG s
z
PurePath.stemc C s� | j std| f ��| j�|f�\}}}|rX|d | jj| jjfksX|sX|sXt|�dkrdtd| ��| �| j| j | j
dd� |g �S )z-Return a new path with the file name changed.�%r has an empty namerR rB zInvalid name %rN) r� r� r rA r+ r2 rV r� r� r� r� )r. r� r< r= r; r! r! r" � with_nameQ s ��
� �zPurePath.with_namec C s� | j }|j|ks |jr.|j|kr.td|f ��|r<|�d�rD|dkrPtd| ��| j}|shtd| f ��| j}|s||| }n|dt|� � | }| �| j | j
| j dd� |g �S )z�Return a new path with the file suffix changed. If the path
has no suffix, add given suffix. If the given suffix is an empty
string, remove the suffix from the path.
zInvalid suffix %rr1 r) NrR ) r r+ r2 r� rx r� r% rV r� r� r� r� )r. r% r r� Z
old_suffixr! r! r" � with_suffix\ s
�zPurePath.with_suffixc
G s� |s t d��| j}| j}| j}|r8||g|dd� }n|}| �|�\}}}|rf||g|dd� } n|} t| �}
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d� �S )z�Return the relative path to another path identified by the passed
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zneed at least one argumentrB Nr z {!r} does not start with {!r}r0 )
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r. r r; r< r= Z abs_partsZto_drvZto_rootZto_partsZ to_abs_parts�n�cfZ formattedr! r! r" � relative_toq s. * �
�zPurePath.relative_toc C s4 z| j W S tk
r. t| j�| _ | j Y S X dS )zZAn object providing sequence-like access to the
components in the filesystem path.N)r� r r r� r- r! r! r" r; � s
zPurePath.partsc G s
| � |�S )z�Combine this path with one or several arguments, and return a
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paths) or a totally different path (if one of the arguments is
anchored).
)r )r. r� r! r! r" �joinpath� s zPurePath.joinpathc C s, z| � |f�W S tk
r& t Y S X d S r* )r r r �r. �keyr! r! r" � __truediv__� s zPurePath.__truediv__c C s2 z| � |g| j �W S tk
r, t Y S X d S r* )r� r� r r r0 r! r! r" � __rtruediv__� s zPurePath.__rtruediv__c C s@ | j }| j}| j}t|�dkr*|s&|r*| S | �|||dd� �S )z The logical parent of the path.rB NrR )r� r� r� rV r� )r. r< r= r; r! r! r" �parent� s zPurePath.parentc C s t | �S )z*A sequence of this path's logical parents.)r� r- r! r! r" �parents� s zPurePath.parentsc C s | j s
dS | jj p t| j�S )zSTrue if the path is absolute (has both a root and, if applicable,
a drive).F)r� r r� �boolr� r- r! r! r" r� � s zPurePath.is_absolutec C s | j �| j�S )zaReturn True if the path contains one of the special names reserved
by the system, if any.)r r} r� r- r! r! r" r} � s zPurePath.is_reservedc C s� | j j}||�}| j �|f�\}}}|s0td��|rF||| j�krFdS |r\||| j�kr\dS | j}|sj|r�t|�t|�kr~dS |dd� }nt|�t|�kr�dS tt |�t |��D ]\}}t
� ||�s� dS q�dS )zE
Return True if this path matches the given pattern.
z
empty patternFrB NT) r rC rA r� r� r� r rV �zipr3 rg Z fnmatchcase) r. Z path_patternr- r< r= Z pat_partsr; r? r' r! r! r" r� � s( zPurePath.matchN)T)T)0rE rF rG rH r� r� r � classmethodr r� r� r
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c @ s e Zd ZdZeZdZdS )r z�PurePath subclass for non-Windows systems.
On a POSIX system, instantiating a PurePath should return this object.
However, you can also instantiate it directly on any system.
r! N)rE rF rG rH �_posix_flavourr r� r! r! r! r" r � s c @ s e Zd ZdZeZdZdS )r z�PurePath subclass for Windows systems.
On a Windows system, instantiating a PurePath should return this object.
However, you can also instantiate it directly on any system.
r! N)rE rF rG rH �_windows_flavourr r� r! r! r! r" r � s c @ s� e Zd ZdZdZdd� Zdddd�Zdd � Zd
d � Zd d
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dedd�Z dfdd�Z e
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dd� �Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zdgd%d&�Zd'd(� Zd)d*� Zd+d,� Zdhd/d0�Zd1d2� Zdid3d4�Zd5d6� Z djd7d8�Z dkd:d;�Z dld<d=�Z d>d?� Z d@dA� Z!dmdBdC�Z"dDdE� Z#dFdG� Z$dHdI� Z%dJdK� Z&dndLdM�Z'dNdO� Z(dPdQ� Z)dRdS� Z*dTdU� Z+dVdW� Z,dXdY� Z-dZd[� Z.d\d]� Z/d^d_� Z0d`da� Z1dbdc� Z2dS )or a� PurePath subclass that can make system calls.
Path represents a filesystem path but unlike PurePath, also offers
methods to do system calls on path objects. Depending on your system,
instantiating a Path will return either a PosixPath or a WindowsPath
object. You can also instantiate a PosixPath or WindowsPath directly,
but cannot instantiate a WindowsPath on a POSIX system or vice versa.
)r� �_closedc O sL | t krtjdkrtnt} | j|dd�}|jjs@td| j f ��|�
� |S )Nr F�r z$cannot instantiate %r on your system) r ro r� r r r� r r� r� rE r )r� r� �kwargsr. r! r! r" r� s �z Path.__new__Nc C s" d| _ |d k r|j| _nt| _d S r� )r< r� �_normal_accessor)r. �templater! r! r" r s
z
Path._initc C s | j |g }| �| j| j|�S r* )r� r� r� r� )r. r? r; r! r! r" r� # s zPath._make_child_relpathc C s | j r| �� | S r* )r< �
_raise_closedr- r! r! r" � __enter__) s zPath.__enter__c C s
d| _ d S )NT)r< )r. �t�v�tbr! r! r" �__exit__. s z
Path.__exit__c C s t d��d S )Nz I/O operation on closed path)r� r- r! r! r" rA 1 s zPath._raise_closed� c C s | j �| ||�S r* )r� r� )r. r� �flagsr� r! r! r" �_opener4 s z Path._opener� c C s | j r| �� | j�| ||�S )zm
Open the file pointed by this path and return a file descriptor,
as os.open() does.
)r< rA r� r� )r. rH r� r! r! r" � _raw_open8 s zPath._raw_openc C s | t �� �S )zjReturn a new path pointing to the current working directory
(as returned by os.getcwd()).
)ro rp �r� r! r! r" �cwdC s zPath.cwdc C s | | � j �d��S )zrReturn a new path pointing to the user's home directory (as
returned by os.path.expanduser('~')).
N)r r� rL r! r! r" �homeJ s z Path.homec C sB | � � }z |� � }W n tk
r2 t� |�}Y nX tj�||�S )zoReturn whether other_path is the same or not as this file
(as returned by os.path.samefile()).
)r� r ro rs �samestat)r. Z
other_path�stZother_str! r! r" �samefileQ s z
Path.samefilec c sH | j r| �� | j�| �D ](}|dkr(q| �|�V | j r| �� qdS )zyIterate over the files in this directory. Does not yield any
result for the special paths '.' and '..'.
> r1 r� N)r< rA r� r� r� r& r! r! r" �iterdir\ s z Path.iterdirc c s` |st d�|���| j�|f�\}}}|s.|r6td��tt|�| j�}|�| �D ]
}|V qPdS )z�Iterate over this subtree and yield all existing files (of any
kind, including directories) matching the given relative pattern.
zUnacceptable pattern: {!r}�%Non-relative patterns are unsupportedN)r� r� r rA r� r� r r� �r. rl r< r= r� Zselectorra r! r! r" �globj s z Path.globc c sR | j �|f�\}}}|s |r$td��tdt|� | j �}|�| �D ]
}|V qBdS )z�Recursively yield all existing files (of any kind, including
directories) matching the given relative pattern, anywhere in
this subtree.
rS )r� N)r rA r� r� r r� rT r! r! r" �rglobw s z
Path.rglobc C sD | j r| �� | �� r| S | jt�� g| j dd�}|j| d� |S )a Return an absolute version of this path. This function works
even if the path doesn't point to anything.
No normalization is done, i.e. all '.' and '..' will be kept along.
Use resolve() to get the canonical path to a file.
Fr= �r@ )r< rA r� r� ro rp r� r )r. �objr! r! r" �absolute� s z
Path.absoluteFc C sh | j r| �� | jj| |d�}|dkr:| �� t| �� �}| jj�|�}| j |fdd�}|j
| d� |S )z�
Make the path absolute, resolving all symlinks on the way and also
normalizing it (for example turning slashes into backslashes under
Windows).
)rt NFr= rW ) r< rA r rv r� rn rY r� �normpathr� r )r. rt r` ZnormedrX r! r! r" rv � s z Path.resolvec C s | j �| �S )zh
Return the result of the stat() system call on this path, like
os.stat() does.
)r� r� r- r! r! r" r� � s z Path.statc C s ddl }|�| �� j�jS )z:
Return the login name of the file owner.
r N)r� r� r� �st_uidZpw_name)r. r� r! r! r" �owner� s z
Path.ownerc C s ddl }|�| �� j�jS )z8
Return the group name of the file gid.
r N)�grpZgetgrgidr� �st_gidZgr_name)r. r] r! r! r" �group� s z
Path.group�rrR c C s( | j r| �� tj| |||||| jd�S )z|
Open the file pointed by this path and return a file object, as
the built-in open() function does.
)Zopener)r< rA �ior� rI )r. r� � buffering�encoding�errors�newliner! r! r" r� � s
�z Path.openc
C s, | j dd��}|�� W 5 Q R � S Q R X dS )zK
Open the file in bytes mode, read it, and close the file.
�rb�r� N�r� �readr r! r! r" �
read_bytes� s zPath.read_bytesc
C s0 | j d||d��}|�� W 5 Q R � S Q R X dS )zJ
Open the file in text mode, read it, and close the file.
r` �r� rc rd Nrh )r. rc rd r r! r! r" � read_text� s zPath.read_textc
C s6 t |�}| jdd��}|�|�W 5 Q R � S Q R X dS )zO
Open the file in bytes mode, write to it, and close the file.
�wbrg N)�
memoryviewr� �write)r. �dataZviewr r! r! r" � write_bytes� s zPath.write_bytesc
C sL t |t�std|jj ��| jd||d��}|�|�W 5 Q R � S Q R X dS )zN
Open the file in text mode, write to it, and close the file.
zdata must be str, not %s�wrk N)r rn r r� rE r� ro )r. rp rc rd r r! r! r" �
write_text� s
�zPath.write_textTc C sr | j r| �� |r>z| j�| d� W n tk
r8 Y nX dS tjtjB }|sX|tjO }| � ||�}t�
|� dS )zS
Create this file with the given access mode, if it doesn't exist.
N) r< rA r� r� r� ro �O_CREAT�O_WRONLY�O_EXCLrK �close)r. r� �exist_okrH �fdr! r! r" �touch� s
z
Path.touchc C s� | j r| �� z| j�| |� W nd tk
rd |r>| j| kr@� | jjddd� | j|d|d� Y n" tk
r� |r~| �� s�� Y nX dS )z<
Create a new directory at this given path.
T)r5 rx FN)r< rA r� r� rr r4 r� r� )r. r� r5 rx r! r! r" r� s z
Path.mkdirc C s | j r| �� | j�| |� dS )zF
Change the permissions of the path, like os.chmod().
N)r< rA r� r� �r. r� r! r! r" r� s z
Path.chmodc C s | j r| �� | j�| |� dS )z�
Like chmod(), except if the path points to a symlink, the symlink's
permissions are changed, rather than its target's.
N)r< rA r� r� r{ r! r! r" r� s z Path.lchmodc C s> | j r| �� z| j�| � W n tk
r8 |s4� Y nX dS )zd
Remove this file or link.
If the path is a directory, use rmdir() instead.
N)r< rA r� r� rr )r. Z
missing_okr! r! r" r� % s z Path.unlinkc C s | j r| �� | j�| � dS )zF
Remove this directory. The directory must be empty.
N)r< rA r� r� r- r! r! r" r� 2 s z
Path.rmdirc C s | j r| �� | j�| �S )z�
Like stat(), except if the path points to a symlink, the symlink's
status information is returned, rather than its target's.
)r< rA r� r� r- r! r! r" r� : s z
Path.lstatc C s& | j r| �� | j�| |� | �|�S )a2
Rename this path to the target path.
The target path may be absolute or relative. Relative paths are
interpreted relative to the current working directory, *not* the
directory of the Path object.
Returns the new Path instance pointing to the target path.
)r< rA r� r� r� r� r! r! r" r� C s
z Path.renamec C s& | j r| �� | j�| |� | �|�S )aS
Rename this path to the target path, overwriting if that path exists.
The target path may be absolute or relative. Relative paths are
interpreted relative to the current working directory, *not* the
directory of the Path object.
Returns the new Path instance pointing to the target path.
)r< rA r� r4 r� r� r! r! r" r4 R s
z Path.replacec C s" | j r| �� | j�|| |� dS )z�
Make this path a symlink pointing to the target path.
Note the order of arguments (link, target) is the reverse of os.symlink.
N)r< rA r� r� )r. r� r� r! r! r" �
symlink_toa s zPath.symlink_toc C s | j r| �� | j�| |� dS )aQ
Make the target path a hard link pointing to this path.
Note this function does not make this path a hard link to *target*,
despite the implication of the function and argument names. The order
of arguments (target, link) is the reverse of Path.symlink_to, but
matches that of os.link.
N)r< rA r� r� r� r! r! r" r� j s
z Path.link_toc
C sX z | � � W nF tk
r> } zt|�s(� W Y �dS d}~X Y n tk
rR Y dS X dS )z+
Whether this path exists.
FNT)r� r� r# r� �r. r� r! r! r" r� z s z Path.existsc
C s\ zt | �� j�W S tk
rB } zt|�s,� W Y �dS d}~X Y n tk
rV Y dS X dS )z3
Whether this path is a directory.
FN)r r� �st_moder� r# r� r} r! r! r" r� � s z Path.is_dirc
C s\ zt | �� j�W S tk
rB } zt|�s,� W Y �dS d}~X Y n tk
rV Y dS X dS )zq
Whether this path is a regular file (also True for symlinks pointing
to regular files).
FN)r r� r~ r� r# r� r} r! r! r" �is_file� s z Path.is_filec C sv | � � r| �� sdS t| j�}z|�� j}W n tk
rB Y dS X | �� j}||krZdS | �� j}|�� j}||kS )z;
Check if this path is a POSIX mount point
FT)r� r� r r4 r� �st_devr� �st_ino)r. r4 Z
parent_devZdevZinoZ
parent_inor! r! r" �is_mount� s
z
Path.is_mountc
C s\ zt | �� j�W S tk
rB } zt|�s,� W Y �dS d}~X Y n tk
rV Y dS X dS )z7
Whether this path is a symbolic link.
FN)r
r� r~ r� r# r� r} r! r! r" r� � s zPath.is_symlinkc
C s\ zt | �� j�W S tk
rB } zt|�s,� W Y �dS d}~X Y n tk
rV Y dS X dS )z6
Whether this path is a block device.
FN)r
r� r~ r� r# r� r} r! r! r" �is_block_device� s zPath.is_block_devicec
C s\ zt | �� j�W S tk
rB } zt|�s,� W Y �dS d}~X Y n tk
rV Y dS X dS )z:
Whether this path is a character device.
FN)r r� r~ r� r# r� r} r! r! r" �is_char_device� s zPath.is_char_devicec
C s\ zt | �� j�W S tk
rB } zt|�s,� W Y �dS d}~X Y n tk
rV Y dS X dS )z.
Whether this path is a FIFO.
FN)r r� r~ r� r# r� r} r! r! r" �is_fifo� s z Path.is_fifoc
C s\ zt | �� j�W S tk
rB } zt|�s,� W Y �dS d}~X Y n tk
rV Y dS X dS )z0
Whether this path is a socket.
FN)r r� r~ r� r# r� r} r! r! r" � is_socket� s zPath.is_socketc C s` | j s\| js\| jr\| jd dd� dkr\| j�| jd dd� �}| �|g| jdd� �S | S )zl Return a new path with expanded ~ and ~user constructs
(as returned by os.path.expanduser)
r NrB �~)r� r� r� r r� r� )r. Zhomedirr! r! r" �
expanduser s ��zPath.expanduser)N)rG )rJ )F)r` rR NNN)NN)NN)rG T)rJ FF)F)F)3rE rF rG rH r� r� r r� rB rF rA rI rK r8 rM rN rQ rR rU rV rY rv r� r\ r_ r� rj rl rq rs rz r� r� r� r� r� r� r� r4 r| r� r� r� r r� r� r� r� r� r� r� r! r! r! r" r sj �
�
c @ s e Zd ZdZdZdS )r zsPath subclass for non-Windows systems.
On a POSIX system, instantiating a Path should return this object.
r! N)rE rF rG rH r� r! r! r! r" r s c @ s, e Zd ZdZdZdd� Zdd� Zdd� Zd S )
r zqPath subclass for Windows systems.
On a Windows system, instantiating a Path should return this object.
r! c C s t d��d S )Nz*Path.owner() is unsupported on this systemr� r- r! r! r" r\ ( s zWindowsPath.ownerc C s t d��d S )Nz*Path.group() is unsupported on this systemr� r- r! r! r" r_ + s zWindowsPath.groupc C s t d��d S )Nz-Path.is_mount() is unsupported on this systemr� r- r! r! r" r� . s zWindowsPath.is_mountN)rE rF rG rH r� r\ r_ r� r! r! r! r" r ! s
)Arg � functoolsra r� ro r� re r8 �_collections_abcr r r r r r r �operatorr r� r r
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subclass thereof) containing *all* headers
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the make_file() method, which is called internally to come up with
a file open for reading and writing. This makes it possible to
override the default choice of storing all files in a temporary
directory and unlinking them as soon as they have been opened.
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fp : file pointer; default: sys.stdin.buffer
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Can be :
1. a TextIOWrapper object
2. an object whose read() and readline() methods return bytes
headers : header dictionary-like object; default:
taken from environ as per CGI spec
outerboundary : terminating multipart boundary
(for internal use only)
environ : environment dictionary; default: os.environ
keep_blank_values: flag indicating whether blank values in
percent-encoded forms should be treated as blank strings.
A true value indicates that blanks should be retained as
blank strings. The default false value indicates that
blank values are to be ignored and treated as if they were
not included.
strict_parsing: flag indicating what to do with parsing errors.
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limit : used internally to read parts of multipart/form-data forms,
to exit from the reading loop when reached. It is the difference
between the form content-length and the number of bytes already
read
encoding, errors : the encoding and error handler used to decode the
binary stream to strings. Must be the same as the charset defined
for the page sending the form (content-type : meta http-equiv or
header)
max_num_fields: int. If set, then __init__ throws a ValueError
if there are more than n fields read by parse_qsl().
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zFieldStorage.getlistc C s* | j dkrtd��t tdd� | j D ���S )z Dictionary style keys() method.Nr� c s s | ] }|j V qd S r� �rh �rL r� r r r � <genexpr>8 s z$FieldStorage.keys.<locals>.<genexpr>)ru r� �setrn r r r r� 4 s
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<LI>DATE_GMT
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<LI>DOCUMENT_NAME
<LI>DOCUMENT_ROOT
<LI>DOCUMENT_URI
<LI>GATEWAY_INTERFACE
<LI>LAST_MODIFIED
<LI>PATH
<LI>PATH_INFO
<LI>PATH_TRANSLATED
<LI>QUERY_STRING
<LI>REMOTE_ADDR
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<LI>REMOTE_IDENT
<LI>REMOTE_USER
<LI>REQUEST_METHOD
<LI>SCRIPT_NAME
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<LI>HTTP_REFERER
<LI>HTTP_USER_AGENT
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Module difflib -- helpers for computing deltas between objects.
Function get_close_matches(word, possibilities, n=3, cutoff=0.6):
Use SequenceMatcher to return list of the best "good enough" matches.
Function context_diff(a, b):
For two lists of strings, return a delta in context diff format.
Function ndiff(a, b):
Return a delta: the difference between `a` and `b` (lists of strings).
Function restore(delta, which):
Return one of the two sequences that generated an ndiff delta.
Function unified_diff(a, b):
For two lists of strings, return a delta in unified diff format.
Class SequenceMatcher:
A flexible class for comparing pairs of sequences of any type.
Class Differ:
For producing human-readable deltas from sequences of lines of text.
Class HtmlDiff:
For producing HTML side by side comparison with change highlights.
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SequenceMatcher is a flexible class for comparing pairs of sequences of
any type, so long as the sequence elements are hashable. The basic
algorithm predates, and is a little fancier than, an algorithm
published in the late 1980's by Ratcliff and Obershelp under the
hyperbolic name "gestalt pattern matching". The basic idea is to find
the longest contiguous matching subsequence that contains no "junk"
elements (R-O doesn't address junk). The same idea is then applied
recursively to the pieces of the sequences to the left and to the right
of the matching subsequence. This does not yield minimal edit
sequences, but does tend to yield matches that "look right" to people.
SequenceMatcher tries to compute a "human-friendly diff" between two
sequences. Unlike e.g. UNIX(tm) diff, the fundamental notion is the
longest *contiguous* & junk-free matching subsequence. That's what
catches peoples' eyes. The Windows(tm) windiff has another interesting
notion, pairing up elements that appear uniquely in each sequence.
That, and the method here, appear to yield more intuitive difference
reports than does diff. This method appears to be the least vulnerable
to synching up on blocks of "junk lines", though (like blank lines in
ordinary text files, or maybe "<P>" lines in HTML files). That may be
because this is the only method of the 3 that has a *concept* of
"junk" <wink>.
Example, comparing two strings, and considering blanks to be "junk":
>>> s = SequenceMatcher(lambda x: x == " ",
... "private Thread currentThread;",
... "private volatile Thread currentThread;")
>>>
.ratio() returns a float in [0, 1], measuring the "similarity" of the
sequences. As a rule of thumb, a .ratio() value over 0.6 means the
sequences are close matches:
>>> print(round(s.ratio(), 3))
0.866
>>>
If you're only interested in where the sequences match,
.get_matching_blocks() is handy:
>>> for block in s.get_matching_blocks():
... print("a[%d] and b[%d] match for %d elements" % block)
a[0] and b[0] match for 8 elements
a[8] and b[17] match for 21 elements
a[29] and b[38] match for 0 elements
Note that the last tuple returned by .get_matching_blocks() is always a
dummy, (len(a), len(b), 0), and this is the only case in which the last
tuple element (number of elements matched) is 0.
If you want to know how to change the first sequence into the second,
use .get_opcodes():
>>> for opcode in s.get_opcodes():
... print("%6s a[%d:%d] b[%d:%d]" % opcode)
equal a[0:8] b[0:8]
insert a[8:8] b[8:17]
equal a[8:29] b[17:38]
See the Differ class for a fancy human-friendly file differencer, which
uses SequenceMatcher both to compare sequences of lines, and to compare
sequences of characters within similar (near-matching) lines.
See also function get_close_matches() in this module, which shows how
simple code building on SequenceMatcher can be used to do useful work.
Timing: Basic R-O is cubic time worst case and quadratic time expected
case. SequenceMatcher is quadratic time for the worst case and has
expected-case behavior dependent in a complicated way on how many
elements the sequences have in common; best case time is linear.
Methods:
__init__(isjunk=None, a='', b='')
Construct a SequenceMatcher.
set_seqs(a, b)
Set the two sequences to be compared.
set_seq1(a)
Set the first sequence to be compared.
set_seq2(b)
Set the second sequence to be compared.
find_longest_match(alo, ahi, blo, bhi)
Find longest matching block in a[alo:ahi] and b[blo:bhi].
get_matching_blocks()
Return list of triples describing matching subsequences.
get_opcodes()
Return list of 5-tuples describing how to turn a into b.
ratio()
Return a measure of the sequences' similarity (float in [0,1]).
quick_ratio()
Return an upper bound on .ratio() relatively quickly.
real_quick_ratio()
Return an upper bound on ratio() very quickly.
N� Tc C s( || _ d | _| _|| _| �||� dS )a! Construct a SequenceMatcher.
Optional arg isjunk is None (the default), or a one-argument
function that takes a sequence element and returns true iff the
element is junk. None is equivalent to passing "lambda x: 0", i.e.
no elements are considered to be junk. For example, pass
lambda x: x in " \t"
if you're comparing lines as sequences of characters, and don't
want to synch up on blanks or hard tabs.
Optional arg a is the first of two sequences to be compared. By
default, an empty string. The elements of a must be hashable. See
also .set_seqs() and .set_seq1().
Optional arg b is the second of two sequences to be compared. By
default, an empty string. The elements of b must be hashable. See
also .set_seqs() and .set_seq2().
Optional arg autojunk should be set to False to disable the
"automatic junk heuristic" that treats popular elements as junk
(see module documentation for more information).
N)�isjunk�a�b�autojunk�set_seqs)�selfr r r r r r r �__init__� s ; zSequenceMatcher.__init__c C s | � |� | �|� dS )z�Set the two sequences to be compared.
>>> s = SequenceMatcher()
>>> s.set_seqs("abcd", "bcde")
>>> s.ratio()
0.75
N)�set_seq1�set_seq2)r r r r r r r � s
zSequenceMatcher.set_seqsc C s$ || j krdS || _ d | _| _dS )aM Set the first sequence to be compared.
The second sequence to be compared is not changed.
>>> s = SequenceMatcher(None, "abcd", "bcde")
>>> s.ratio()
0.75
>>> s.set_seq1("bcde")
>>> s.ratio()
1.0
>>>
SequenceMatcher computes and caches detailed information about the
second sequence, so if you want to compare one sequence S against
many sequences, use .set_seq2(S) once and call .set_seq1(x)
repeatedly for each of the other sequences.
See also set_seqs() and set_seq2().
N)r �matching_blocks�opcodes)r r r r r r � s
zSequenceMatcher.set_seq1c C s2 || j krdS || _ d | _| _d| _| �� dS )aM Set the second sequence to be compared.
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>>> s = SequenceMatcher(None, "abcd", "bcde")
>>> s.ratio()
0.75
>>> s.set_seq2("abcd")
>>> s.ratio()
1.0
>>>
SequenceMatcher computes and caches detailed information about the
second sequence, so if you want to compare one sequence S against
many sequences, use .set_seq2(S) once and call .set_seq1(x)
repeatedly for each of the other sequences.
See also set_seqs() and set_seq1().
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| �S )a� Find longest matching block in a[alo:ahi] and b[blo:bhi].
If isjunk is not defined:
Return (i,j,k) such that a[i:i+k] is equal to b[j:j+k], where
alo <= i <= i+k <= ahi
blo <= j <= j+k <= bhi
and for all (i',j',k') meeting those conditions,
k >= k'
i <= i'
and if i == i', j <= j'
In other words, of all maximal matching blocks, return one that
starts earliest in a, and of all those maximal matching blocks that
start earliest in a, return the one that starts earliest in b.
>>> s = SequenceMatcher(None, " abcd", "abcd abcd")
>>> s.find_longest_match(0, 5, 0, 9)
Match(a=0, b=4, size=5)
If isjunk is defined, first the longest matching block is
determined as above, but with the additional restriction that no
junk element appears in the block. Then that block is extended as
far as possible by matching (only) junk elements on both sides. So
the resulting block never matches on junk except as identical junk
happens to be adjacent to an "interesting" match.
Here's the same example as before, but considering blanks to be
junk. That prevents " abcd" from matching the " abcd" at the tail
end of the second sequence directly. Instead only the "abcd" can
match, and matches the leftmost "abcd" in the second sequence:
>>> s = SequenceMatcher(lambda x: x==" ", " abcd", "abcd abcd")
>>> s.find_longest_match(0, 5, 0, 9)
Match(a=1, b=0, size=4)
If no blocks match, return (alo, blo, 0).
>>> s = SequenceMatcher(None, "ab", "c")
>>> s.find_longest_match(0, 2, 0, 1)
Match(a=0, b=0, size=0)
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j |��| _ | j S )a Return list of triples describing matching subsequences.
Each triple is of the form (i, j, n), and means that
a[i:i+n] == b[j:j+n]. The triples are monotonically increasing in
i and in j. New in Python 2.5, it's also guaranteed that if
(i, j, n) and (i', j', n') are adjacent triples in the list, and
the second is not the last triple in the list, then i+n != i' or
j+n != j'. IOW, adjacent triples never describe adjacent equal
blocks.
The last triple is a dummy, (len(a), len(b), 0), and is the only
triple with n==0.
>>> s = SequenceMatcher(None, "abxcd", "abcd")
>>> list(s.get_matching_blocks())
[Match(a=0, b=0, size=2), Match(a=3, b=2, size=2), Match(a=5, b=4, size=0)]
Nr
) r r/ r r �popr> r* �sort�list�mapr �_make)r �la�lbZqueuer r8 r9 r: r; r1 r< r= �x�i1�j1Zk1Z non_adjacent�i2�j2Zk2r r r �get_matching_blocks� s8
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Each tuple is of the form (tag, i1, i2, j1, j2). The first tuple
has i1 == j1 == 0, and remaining tuples have i1 == the i2 from the
tuple preceding it, and likewise for j1 == the previous j2.
The tags are strings, with these meanings:
'replace': a[i1:i2] should be replaced by b[j1:j2]
'delete': a[i1:i2] should be deleted.
Note that j1==j2 in this case.
'insert': b[j1:j2] should be inserted at a[i1:i1].
Note that i1==i2 in this case.
'equal': a[i1:i2] == b[j1:j2]
>>> a = "qabxcd"
>>> b = "abycdf"
>>> s = SequenceMatcher(None, a, b)
>>> for tag, i1, i2, j1, j2 in s.get_opcodes():
... print(("%7s a[%d:%d] (%s) b[%d:%d] (%s)" %
... (tag, i1, i2, a[i1:i2], j1, j2, b[j1:j2])))
delete a[0:1] (q) b[0:0] ()
equal a[1:3] (ab) b[0:2] (ab)
replace a[3:4] (x) b[2:3] (y)
equal a[4:6] (cd) b[3:5] (cd)
insert a[6:6] () b[5:6] (f)
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c sn | � � }|sdg}|d d dkrZ|d \}}}}}|t||| �|t||| �|f|d< |d d dkr�|d \}}}}}||t||| �|t||| �f|d< || }g } |D ]�\}}}}}|dk�r(|| |k�r(| �||t||| �|t||| �f� | V g } t||| �t||| � }}| �|||||f� q�| �rjt| �dk�rd| d d dk�sj| V dS )a� Isolate change clusters by eliminating ranges with no changes.
Return a generator of groups with up to n lines of context.
Each group is in the same format as returned by get_opcodes().
>>> from pprint import pprint
>>> a = list(map(str, range(1,40)))
>>> b = a[:]
>>> b[8:8] = ['i'] # Make an insertion
>>> b[20] += 'x' # Make a replacement
>>> b[23:28] = [] # Make a deletion
>>> b[30] += 'y' # Make another replacement
>>> pprint(list(SequenceMatcher(None,a,b).get_grouped_opcodes()))
[[('equal', 5, 8, 5, 8), ('insert', 8, 8, 8, 9), ('equal', 8, 11, 9, 12)],
[('equal', 16, 19, 17, 20),
('replace', 19, 20, 20, 21),
('equal', 20, 22, 21, 23),
('delete', 22, 27, 23, 23),
('equal', 27, 30, 23, 26)],
[('equal', 31, 34, 27, 30),
('replace', 34, 35, 30, 31),
('equal', 35, 38, 31, 34)]]
)rO r
r& r
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r r4 ZcodesrS rG rI rH rJ Znn�groupr r r �get_grouped_opcodes< s( &&( &z#SequenceMatcher.get_grouped_opcodesc C s0 t dd� | �� D ��}t|t| j�t| j� �S )a� Return a measure of the sequences' similarity (float in [0,1]).
Where T is the total number of elements in both sequences, and
M is the number of matches, this is 2.0*M / T.
Note that this is 1 if the sequences are identical, and 0 if
they have nothing in common.
.ratio() is expensive to compute if you haven't already computed
.get_matching_blocks() or .get_opcodes(), in which case you may
want to try .quick_ratio() or .real_quick_ratio() first to get an
upper bound.
>>> s = SequenceMatcher(None, "abcd", "bcde")
>>> s.ratio()
0.75
>>> s.quick_ratio()
0.75
>>> s.real_quick_ratio()
1.0
c s s | ]}|d V qdS )rV Nr )�.0Ztripler r r � <genexpr>� s z(SequenceMatcher.ratio.<locals>.<genexpr>)�sumrK r r/ r r )r r r r r �ration s zSequenceMatcher.ratioc C s� | j dkr4i | _ }| jD ]}|�|d�d ||< q| j }i }|jd }}| jD ]>}||�rf|| }n |�|d�}|d ||< |dkrP|d }qPt|t| j�t| j� �S )z�Return an upper bound on ratio() relatively quickly.
This isn't defined beyond that it is an upper bound on .ratio(), and
is faster to compute.
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r& )r" r r7 r5 r r r/ )r r" r2 ZavailZavailhasr Znumbr r r � quick_ratio� s
zSequenceMatcher.quick_ratioc C s* t | j�t | j� }}tt||�|| �S )z�Return an upper bound on ratio() very quickly.
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is faster to compute than either .ratio() or .quick_ratio().
)r/ r r r rX )r rD rE r r r �real_quick_ratio� s z SequenceMatcher.real_quick_ratio)Nr r T)rU )�__name__�
__module__� __qualname__�__doc__r r r r r# r> rK rT rZ r^ r_ r` r r r r r + s j
@ ,'nG7
2 rU �333333�?c C s� |dkst d|f ��d| kr*dks:n t d|f ��g }t� }|�| � |D ]D}|�|� |�� |krR|�� |krR|�� |krR|�|�� |f� qRt||�}dd� |D �S )a� Use SequenceMatcher to return list of the best "good enough" matches.
word is a sequence for which close matches are desired (typically a
string).
possibilities is a list of sequences against which to match word
(typically a list of strings).
Optional arg n (default 3) is the maximum number of close matches to
return. n must be > 0.
Optional arg cutoff (default 0.6) is a float in [0, 1]. Possibilities
that don't score at least that similar to word are ignored.
The best (no more than n) matches among the possibilities are returned
in a list, sorted by similarity score, most similar first.
>>> get_close_matches("appel", ["ape", "apple", "peach", "puppy"])
['apple', 'ape']
>>> import keyword as _keyword
>>> get_close_matches("wheel", _keyword.kwlist)
['while']
>>> get_close_matches("Apple", _keyword.kwlist)
[]
>>> get_close_matches("accept", _keyword.kwlist)
['except']
r
zn must be > 0: %rg r z cutoff must be in [0.0, 1.0]: %rc S s g | ] \}}|�qS r r )r[ ZscorerF r r r �
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ValueErrorr r r r` r_ r^ r* � _nlargest)ZwordZ
possibilitiesr4 �cutoff�result�srF r r r r � s"
�
�
c C s d� dd� t| |�D ��S )zAReplace whitespace with the original whitespace characters in `s`r c s s* | ]"\}}|d kr |� � r |n|V qdS )� N)�isspace)r[ �cZtag_cr r r r\ � s �z$_keep_original_ws.<locals>.<genexpr>)�join�zip)rk Ztag_sr r r �_keep_original_ws� s
�rq c @ sJ e Zd ZdZddd�Zdd� Zdd� Zd d
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Differ is a class for comparing sequences of lines of text, and
producing human-readable differences or deltas. Differ uses
SequenceMatcher both to compare sequences of lines, and to compare
sequences of characters within similar (near-matching) lines.
Each line of a Differ delta begins with a two-letter code:
'- ' line unique to sequence 1
'+ ' line unique to sequence 2
' ' line common to both sequences
'? ' line not present in either input sequence
Lines beginning with '? ' attempt to guide the eye to intraline
differences, and were not present in either input sequence. These lines
can be confusing if the sequences contain tab characters.
Note that Differ makes no claim to produce a *minimal* diff. To the
contrary, minimal diffs are often counter-intuitive, because they synch
up anywhere possible, sometimes accidental matches 100 pages apart.
Restricting synch points to contiguous matches preserves some notion of
locality, at the occasional cost of producing a longer diff.
Example: Comparing two texts.
First we set up the texts, sequences of individual single-line strings
ending with newlines (such sequences can also be obtained from the
`readlines()` method of file-like objects):
>>> text1 = ''' 1. Beautiful is better than ugly.
... 2. Explicit is better than implicit.
... 3. Simple is better than complex.
... 4. Complex is better than complicated.
... '''.splitlines(keepends=True)
>>> len(text1)
4
>>> text1[0][-1]
'\n'
>>> text2 = ''' 1. Beautiful is better than ugly.
... 3. Simple is better than complex.
... 4. Complicated is better than complex.
... 5. Flat is better than nested.
... '''.splitlines(keepends=True)
Next we instantiate a Differ object:
>>> d = Differ()
Note that when instantiating a Differ object we may pass functions to
filter out line and character 'junk'. See Differ.__init__ for details.
Finally, we compare the two:
>>> result = list(d.compare(text1, text2))
'result' is a list of strings, so let's pretty-print it:
>>> from pprint import pprint as _pprint
>>> _pprint(result)
[' 1. Beautiful is better than ugly.\n',
'- 2. Explicit is better than implicit.\n',
'- 3. Simple is better than complex.\n',
'+ 3. Simple is better than complex.\n',
'? ++\n',
'- 4. Complex is better than complicated.\n',
'? ^ ---- ^\n',
'+ 4. Complicated is better than complex.\n',
'? ++++ ^ ^\n',
'+ 5. Flat is better than nested.\n']
As a single multi-line string it looks like this:
>>> print(''.join(result), end="")
1. Beautiful is better than ugly.
- 2. Explicit is better than implicit.
- 3. Simple is better than complex.
+ 3. Simple is better than complex.
? ++
- 4. Complex is better than complicated.
? ^ ---- ^
+ 4. Complicated is better than complex.
? ++++ ^ ^
+ 5. Flat is better than nested.
Methods:
__init__(linejunk=None, charjunk=None)
Construct a text differencer, with optional filters.
compare(a, b)
Compare two sequences of lines; generate the resulting delta.
Nc C s || _ || _dS )a�
Construct a text differencer, with optional filters.
The two optional keyword parameters are for filter functions:
- `linejunk`: A function that should accept a single string argument,
and return true iff the string is junk. The module-level function
`IS_LINE_JUNK` may be used to filter out lines without visible
characters, except for at most one splat ('#'). It is recommended
to leave linejunk None; the underlying SequenceMatcher class has
an adaptive notion of "noise" lines that's better than any static
definition the author has ever been able to craft.
- `charjunk`: A function that should accept a string of length 1. The
module-level function `IS_CHARACTER_JUNK` may be used to filter out
whitespace characters (a blank or tab; **note**: bad idea to include
newline in this!). Use of IS_CHARACTER_JUNK is recommended.
N��linejunk�charjunk)r rs rt r r r r H s zDiffer.__init__c
c s� t | j||�}|�� D ]�\}}}}}|dkrB| �||||||�} n\|dkr\| �d|||�} nB|dkrv| �d|||�} n(|dkr�| �d|||�} ntd|f ��| E d H qd S )
a�
Compare two sequences of lines; generate the resulting delta.
Each sequence must contain individual single-line strings ending with
newlines. Such sequences can be obtained from the `readlines()` method
of file-like objects. The delta generated also consists of newline-
terminated strings, ready to be printed as-is via the writeline()
method of a file-like object.
Example:
>>> print(''.join(Differ().compare('one\ntwo\nthree\n'.splitlines(True),
... 'ore\ntree\nemu\n'.splitlines(True))),
... end="")
- one
? ^
+ ore
? ^
- two
- three
? -
+ tree
+ emu
rL rM �-rN �+rO rl �unknown tag %rN)r rs rT �_fancy_replace�_dumprg )
r r r �cruncherrS r8 r9 r: r; �gr r r �compare_ s zDiffer.comparec c s& t ||�D ]}d||| f V q
dS )z4Generate comparison results for a same-tagged range.z%s %sN)r6 )r rS rF �lo�hir1 r r r ry � s z Differ._dumpc
c s� ||k r||k st �|| || k rF| �d|||�}| �d|||�}n | �d|||�}| �d|||�}||fD ]} | E d H qnd S )Nrv ru )�AssertionErrorry )
r r r8 r9 r r: r; �first�secondr{ r r r �_plain_replace� s zDiffer._plain_replacec c s: d\}}t | j�} d\}
} t||�D ]�} || }
| �|
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dkr�| �||||||�E dH dS |
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| � ||||||�E dH || || }}|
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||� | � � D ]�\}}}}}|| || }} |dk�r�|d| 7 }|d| 7 }nb|dk�r�|d | 7 }nJ|d
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When replacing one block of lines with another, search the blocks
for *similar* lines; the best-matching pair (if any) is used as a
synch point, and intraline difference marking is done on the
similar pair. Lots of work, but often worth it.
Example:
>>> d = Differ()
>>> results = d._fancy_replace(['abcDefghiJkl\n'], 0, 1,
... ['abcdefGhijkl\n'], 0, 1)
>>> print(''.join(results), end="")
- abcDefghiJkl
? ^ ^ ^
+ abcdefGhijkl
? ^ ^ ^
)g�G�z��?g �?)NNNr r rL �^rM ru rN rv rO rl rw � r& )r rt r6 r r r` r_ r^ r� �
_fancy_helperr rT rg �_qformat) r r r8 r9 r r: r; Z
best_ratiori rz ZeqiZeqjr< rQ r1 rP Zbest_iZbest_jZaeltZbelt�atags�btagsrS Zai1Zai2Zbj1Zbj2rD rE r r r rx � s\
�
�
zDiffer._fancy_replacec c sb g }||k r<||k r*| � ||||||�}qT| �d|||�}n||k rT| �d|||�}|E d H d S )Nru rv )rx ry )r r r8 r9 r r: r; r{ r r r r� � s zDiffer._fancy_helperc c sX t ||��� }t ||��� }d| V |r8d|� d�V d| V |rTd|� d�V dS )a�
Format "?" output and deal with tabs.
Example:
>>> d = Differ()
>>> results = d._qformat('\tabcDefghiJkl\n', '\tabcdefGhijkl\n',
... ' ^ ^ ^ ', ' ^ ^ ^ ')
>>> for line in results: print(repr(line))
...
'- \tabcDefghiJkl\n'
'? \t ^ ^ ^\n'
'+ \tabcdefGhijkl\n'
'? \t ^ ^ ^\n'
�- z? �
�+ N)rq �rstrip)r ZalineZbliner� r� r r r r� s
zDiffer._qformat)NN) ra rb rc rd r r| ry r� rx r� r� r r r r r � s ]
)^ Nz
\s*(?:#\s*)?$c C s || �dk S )z�
Return True for ignorable line: iff `line` is blank or contains a single '#'.
Examples:
>>> IS_LINE_JUNK('\n')
True
>>> IS_LINE_JUNK(' # \n')
True
>>> IS_LINE_JUNK('hello\n')
False
Nr )�lineZpatr r r r 3 s � c C s | |kS )z�
Return True for ignorable character: iff `ch` is a space or tab.
Examples:
>>> IS_CHARACTER_JUNK(' ')
True
>>> IS_CHARACTER_JUNK('\t')
True
>>> IS_CHARACTER_JUNK('\n')
False
>>> IS_CHARACTER_JUNK('x')
False
r )ZchZwsr r r r C s c C s: | d }|| }|dkr"d� |�S |s.|d8 }d� ||�S �z Convert range to the "ed" formatr& z{}z{},{}��format��start�stopZ beginningr r r r �_format_range_unifiedZ s
r� r r� c c sP t | ||||||� d}td| |��|�D �] } |s|d}|rFd�|�nd}
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Compare two sequences of lines; generate the delta as a unified diff.
Unified diffs are a compact way of showing line changes and a few
lines of context. The number of context lines is set by 'n' which
defaults to three.
By default, the diff control lines (those with ---, +++, or @@) are
created with a trailing newline. This is helpful so that inputs
created from file.readlines() result in diffs that are suitable for
file.writelines() since both the inputs and outputs have trailing
newlines.
For inputs that do not have trailing newlines, set the lineterm
argument to "" so that the output will be uniformly newline free.
The unidiff format normally has a header for filenames and modification
times. Any or all of these may be specified using strings for
'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
The modification times are normally expressed in the ISO 8601 format.
Example:
>>> for line in unified_diff('one two three four'.split(),
... 'zero one tree four'.split(), 'Original', 'Current',
... '2005-01-26 23:30:50', '2010-04-02 10:20:52',
... lineterm=''):
... print(line) # doctest: +NORMALIZE_WHITESPACE
--- Original 2005-01-26 23:30:50
+++ Current 2010-04-02 10:20:52
@@ -1,4 +1,4 @@
+zero
one
-two
-three
+tree
four
FNT� {}r �
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c C sB | d }|| }|s |d8 }|dkr.d� |�S d� ||| d �S r� r� r� r r r �_format_range_context� s
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Compare two sequences of lines; generate the delta as a context diff.
Context diffs are a compact way of showing line changes and a few
lines of context. The number of context lines is set by 'n' which
defaults to three.
By default, the diff control lines (those with *** or ---) are
created with a trailing newline. This is helpful so that inputs
created from file.readlines() result in diffs that are suitable for
file.writelines() since both the inputs and outputs have trailing
newlines.
For inputs that do not have trailing newlines, set the lineterm
argument to "" so that the output will be uniformly newline free.
The context diff format normally has a header for filenames and
modification times. Any or all of these may be specified using
strings for 'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
The modification times are normally expressed in the ISO 8601 format.
If not specified, the strings default to blanks.
Example:
>>> print(''.join(context_diff('one\ntwo\nthree\nfour\n'.splitlines(True),
... 'zero\none\ntree\nfour\n'.splitlines(True), 'Original', 'Current')),
... end="")
*** Original
--- Current
***************
*** 1,4 ****
one
! two
! three
four
--- 1,4 ----
+ zero
one
! tree
four
r� r� z! r� )rN rM rL rO FNTr� r z
*** {}{}{}r� r
rV z***************r& r� z
*** {} ****{}c s s | ]\}}}}}|d kV qdS )> rM rL Nr �r[ rS �_r r r r\ � s z context_diff.<locals>.<genexpr>rN rU r� z
--- {} ----{}c s s | ]\}}}}}|d kV qdS )> rL rN Nr r� r r r r\ s rM )r� �dictr rZ r� r� �any)r r r� r� r� r� r4 r� �prefixr� rY r� r� r� r� r� rS rG rI r� r� r� rH rJ r r r r � s4 ,
c G s� | r0t | d t�s0tdt| d �j| d f ��|r`t |d t�s`tdt|d �j|d f ��|D ] }t |t�sdtd|f ��qdd S )Nr
z)lines to compare must be str, not %s (%r)z"all arguments must be str, not: %r)�
isinstance�str� TypeError�typera )r r �args�argr r r r� s ��
r� � �
c c s~ dd� } t t| |��}t t| |��}| |�}| |�}| |�}| |�}| |�}| ||||||||�}
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Compare `a` and `b`, two sequences of lines represented as bytes rather
than str. This is a wrapper for `dfunc`, which is typically either
unified_diff() or context_diff(). Inputs are losslessly converted to
strings so that `dfunc` only has to worry about strings, and encoded
back to bytes on return. This is necessary to compare files with
unknown or inconsistent encoding. All other inputs (except `n`) must be
bytes rather than str.
c
S sR z| � dd�W S tk
rL } z dt| �j| f }t|�|�W 5 d }~X Y nX d S )N�ascii�surrogateescapez(all arguments must be bytes, not %s (%r))�decode�AttributeErrorr� ra r� )rk �err�msgr r r r� " s �zdiff_bytes.<locals>.decoder� r� N)rA rB �encode) Zdfuncr r r� r� r� r� r4 r� r� �linesr� r r r r
s c C s t ||��| |�S )aJ
Compare `a` and `b` (lists of strings); return a `Differ`-style delta.
Optional keyword parameters `linejunk` and `charjunk` are for filter
functions, or can be None:
- linejunk: A function that should accept a single string argument and
return true iff the string is junk. The default is None, and is
recommended; the underlying SequenceMatcher class has an adaptive
notion of "noise" lines.
- charjunk: A function that accepts a character (string of length
1), and returns true iff the character is junk. The default is
the module-level function IS_CHARACTER_JUNK, which filters out
whitespace characters (a blank or tab; note: it's a bad idea to
include newline in this!).
Tools/scripts/ndiff.py is a command-line front-end to this function.
Example:
>>> diff = ndiff('one\ntwo\nthree\n'.splitlines(keepends=True),
... 'ore\ntree\nemu\n'.splitlines(keepends=True))
>>> print(''.join(diff), end="")
- one
? ^
+ ore
? ^
- two
- three
? -
+ tree
+ emu
)r r| )r r rs rt r r r r 5 s #c # s� ddl }|�d��t| |||��ddgf�fdd� ���fdd�� � fdd �}|� }|dkrj|E dH �n |d
7 }d}ddg| } }
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a� Returns generator yielding marked up from/to side by side differences.
Arguments:
fromlines -- list of text lines to compared to tolines
tolines -- list of text lines to be compared to fromlines
context -- number of context lines to display on each side of difference,
if None, all from/to text lines will be generated.
linejunk -- passed on to ndiff (see ndiff documentation)
charjunk -- passed on to ndiff (see ndiff documentation)
This function returns an iterator which returns a tuple:
(from line tuple, to line tuple, boolean flag)
from/to line tuple -- (line num, line text)
line num -- integer or None (to indicate a context separation)
line text -- original line text with following markers inserted:
'\0+' -- marks start of added text
'\0-' -- marks start of deleted text
'\0^' -- marks start of changed text
'\1' -- marks end of added/deleted/changed text
boolean flag -- None indicates context separation, True indicates
either "from" or "to" line contains a change, otherwise False.
This function/iterator was originally developed to generate side by side
file difference for making HTML pages (see HtmlDiff class for example
usage).
Note, this function utilizes the ndiff function to generate the side by
side difference markup. Optional ndiff arguments may be passed to this
function and they in turn will be passed to ndiff.
r
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(\++|\-+|\^+)c s� || d7 < |dkr2|| | � d�dd� fS |dkr�| � d�| � d� }}g }|fdd�}� �||� t|�D ]<\}\} }
|d| � d | || |
� d ||
d� }qt|dd� }n*| � d�dd� }|s�d
}d| | d }|| |fS ) a Returns line of text with user's change markup and line formatting.
lines -- list of lines from the ndiff generator to produce a line of
text from. When producing the line of text to return, the
lines used are removed from this list.
format_key -- '+' return first line in list with "add" markup around
the entire line.
'-' return first line in list with "delete" markup around
the entire line.
'?' return first line in list with add/delete/change
intraline markup (indices obtained from second line)
None return first line in list with no markup
side -- indice into the num_lines list (0=from,1=to)
num_lines -- from/to current line number. This is NOT intended to be a
passed parameter. It is present as a keyword argument to
maintain memory of the current line numbers between calls
of this function.
Note, this function is purposefully not defined at the module scope so
that data it needs from its parent function (within whose context it
is defined) does not need to be of module scope.
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import sys
# create a Trace object, telling it what to ignore, and whether to
# do tracing or line-counting or both.
tracer = trace.Trace(ignoredirs=[sys.base_prefix, sys.base_exec_prefix,],
trace=0, count=1)
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dS )�BufferedIOBasea Base class for buffered IO objects.
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r c C s | � d� dS )a� Read and return up to size bytes, where size is an int.
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r� Nr\ r� rA rA rB r� � s zBufferedIOBase.writec C s | � d� dS )z�
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X Y nX W n" |dk �r0t�|� � Y nX || _ dS )ad Open a file. The mode can be 'r' (default), 'w', 'x' or 'a' for reading,
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doesn't exist when opened for writing or appending; it will be truncated
when opened for writing. A FileExistsError will be raised if it already
exists when opened for creating. Opening a file for creating implies
writing so this mode behaves in a similar way to 'w'. Add a '+' to the mode
to allow simultaneous reading and writing. A custom opener can be used by
passing a callable as *opener*. The underlying file descriptor for the file
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results in functionality similar to passing None).
r r z$integer argument expected, got floatznegative file descriptorzinvalid mode: %szxrwab+c s s | ]}|d kV qdS )ZrwaxNrA )�.0�crA rA rB � <genexpr>� s z"FileIO.__init__.<locals>.<genexpr>r
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�zFileIO.__repr__c C s | j std��d S )NzFile not open for reading)r� rV r` rA rA rB rp Y s zFileIO._checkReadablec C s | j std��d S )NzFile not open for writing)r� rV rl rA rA rB rr ] s zFileIO._checkWritablec C sT | � � | �� |dks |dk r(| �� S zt�| j|�W S tk
rN Y dS X dS )z�Read at most size bytes, returned as bytes.
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r� |r�Y q�Y dS X |s�q�||7 }qft|�S )z�Read all data from the file, returned as bytes.
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or None if no data is available. Return an empty bytes object at EOF.
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r6 Y dS X dS )a Write bytes b to file, return number written.
Only makes one system call, so not all of the data may be written.
The number of bytes actually written is returned. In non-blocking mode,
returns None if the write would block.
N)re rr r r� r� r� r� rA rA rB r� � s z FileIO.writec C s* t |t�rtd��| �� t�| j||�S )a� Move to new file position.
Argument offset is a byte count. Optional argument whence defaults to
SEEK_SET or 0 (offset from start of file, offset should be >= 0); other values
are SEEK_CUR or 1 (move relative to current position, positive or negative),
and SEEK_END or 2 (move relative to end of file, usually negative, although
many platforms allow seeking beyond the end of a file).
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zan integer is required)r r� r re r r r� r] rA rA rB r[ � s
z FileIO.seekc C s | � � t�| jdt�S )zYtell() -> int. Current file position.
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N)re rr ra r � ftruncater� r| rA rA rB rb � s zFileIO.truncatec s. | j s*z| jrt�| j� W 5 t� �� X dS )z�Close the file.
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called more than once without error.
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z FileIO.closec C sF | � � | jdkr@z | �� W n tk
r8 d| _Y nX d| _| jS )z$True if file supports random-access.NFT)re � _seekablera r. r` rA rA rB rk � s
zFileIO.seekablec C s | � � | jS )z'True if file was opened in a read mode.)re r� r` rA rA rB ro � s zFileIO.readablec C s | � � | jS )z(True if file was opened in a write mode.)re r� r` rA rA rB rq � s zFileIO.writablec C s | � � | jS )z3Return the underlying file descriptor (an integer).)re r� r` rA rA rB r, � s z
FileIO.filenoc C s | � � t�| j�S )z.True if the file is connected to a TTY device.)re r r) r� r` rA rA rB r) � s z
FileIO.isattyc C s | j S )z6True if the file descriptor will be closed by close().)r� r` rA rA rB r; � s zFileIO.closefdc C sJ | j r| jrdS dS n0| jr,| jr&dS dS n| jrB| jr<dS dS ndS dS ) zString giving the file modezxb+Zxbzab+Zabzrb+rD �wbN)r� r� r� r� r` rA rA rB r4 s z FileIO.mode)r
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This class provides a character and line based interface to stream
I/O. There is no public constructor.
r c C s | � d� dS )z�Read at most size characters from stream, where size is an int.
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r� Nr\ r| rA rA rB r� s zTextIOBase.readc C s | � d� dS )z.Write string s to stream and returning an int.r� Nr\ )rI �srA rA rB r� ( s zTextIOBase.writeNc C s | � d� dS )z*Truncate size to pos, where pos is an int.rb Nr\ rc rA rA rB rb , s zTextIOBase.truncatec C s | � d� dS )z_Read until newline or EOF.
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r� Nr\ r` rA rA rB r� 0 s zTextIOBase.readlinec C s | � d� dS )z�
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After the underlying buffer has been detached, the TextIO is in an
unusable state.
r� Nr\ r` rA rA rB r� 7 s zTextIOBase.detachc C s dS )zSubclasses should override.NrA r` rA rA rB r8 @ s zTextIOBase.encodingc C s dS )z�Line endings translated so far.
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Subclasses should override.
NrA r` rA rA rB �newlinesE s zTextIOBase.newlinesc C s dS )zMError setting of the decoder or encoder.
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one piece.
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codecs.register) and defaults to "strict".
newline can be None, '', '\n', '\r', or '\r\n'. It controls the
handling of line endings. If it is None, universal newlines is
enabled. With this enabled, on input, the lines endings '\n', '\r',
or '\r\n' are translated to '\n' before being returned to the
caller. Conversely, on output, '\n' is translated to the system
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legal values, that newline becomes the newline when the file is read
and it is returned untranslated. On output, '\n' is converted to the
newline.
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write contains a newline character.
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zTextIOWrapper.__repr__c C s | j S rQ )rB r` rA rA rB r8 2 s zTextIOWrapper.encodingc C s | j S rQ )rC r` rA rA rB r9 6 s zTextIOWrapper.errorsc C s | j S rQ )rM r` rA rA rB r? : s z TextIOWrapper.line_bufferingc C s | j S rQ )rN r` rA rA rB r? > s zTextIOWrapper.write_throughc C s | j S rQ )r� r` rA rA rB r@ B s zTextIOWrapper.buffer)r8 r9 r: r? r? c C s� | j dk r*|dk s"|dk s"|tk r*td��|dkrH|dkrB| j}q^d}nt|t�s^td| ��|dkrn| j}nt|t�s�td| ��|tkr�| j}| � |� |dkr�| j
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width (default: 70)
the maximum width of wrapped lines (unless break_long_words
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initial_indent (default: "")
string that will be prepended to the first line of wrapped
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subsequent_indent (default: "")
string that will be prepended to all lines save the first
of wrapped output; also counts towards each line's width.
expand_tabs (default: true)
Expand tabs in input text to spaces before further processing.
Each tab will become 0 .. 'tabsize' spaces, depending on its position
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tabsize (default: 8)
Expand tabs in input text to 0 .. 'tabsize' spaces, unless
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Replace all whitespace characters in the input text by spaces
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fix_sentence_endings (default: false)
Ensure that sentence-ending punctuation is always followed
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break_long_words (default: true)
Break words longer than 'width'. If false, those words will not
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Allow breaking hyphenated words. If true, wrapping will occur
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Drop leading and trailing whitespace from lines.
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Append to the last line of truncated text.
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Object for wrapping/filling text. The public interface consists of
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you'll probably have to override _wrap_chunks().
Several instance attributes control various aspects of wrapping:
width (default: 70)
the maximum width of wrapped lines (unless break_long_words
is false)
initial_indent (default: "")
string that will be prepended to the first line of wrapped
output. Counts towards the line's width.
subsequent_indent (default: "")
string that will be prepended to all lines save the first
of wrapped output; also counts towards each line's width.
expand_tabs (default: true)
Expand tabs in input text to spaces before further processing.
Each tab will become 0 .. 'tabsize' spaces, depending on its position
in its line. If false, each tab is treated as a single character.
tabsize (default: 8)
Expand tabs in input text to 0 .. 'tabsize' spaces, unless
'expand_tabs' is false.
replace_whitespace (default: true)
Replace all whitespace characters in the input text by spaces
after tab expansion. Note that if expand_tabs is false and
replace_whitespace is true, every tab will be converted to a
single space!
fix_sentence_endings (default: false)
Ensure that sentence-ending punctuation is always followed
by two spaces. Off by default because the algorithm is
(unavoidably) imperfect.
break_long_words (default: true)
Break words longer than 'width'. If false, those words will not
be broken, and some lines might be longer than 'width'.
break_on_hyphens (default: true)
Allow breaking hyphenated words. If true, wrapping will occur
preferably on whitespaces and right after hyphens part of
compound words.
drop_whitespace (default: true)
Drop leading and trailing whitespace from lines.
max_lines (default: None)
Truncate wrapped lines.
placeholder (default: ' [...]')
Append to the last line of truncated text.
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Split the text to wrap into indivisible chunks. Chunks are
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Look, goof-ball -- use the -b option!
breaks into the following chunks:
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'use', ' ', 'the', ' ', '-b', ' ', 'option!'
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Correct for sentence endings buried in 'chunks'. Eg. when the
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Wrap a sequence of text chunks and return a list of lines of
length 'self.width' or less. (If 'break_long_words' is false,
some lines may be longer than this.) Chunks correspond roughly
to words and the whitespace between them: each chunk is
indivisible (modulo 'break_long_words'), but a line break can
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�rPt||�}n t d#| ��|}|�rl|W S t|||||�}|}||_|W S |�� � Y nX dS )$a� Open file and return a stream. Raise OSError upon failure.
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returned I/O object is closed, unless closefd is set to False.)
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========= ===============================================================
Character Meaning
--------- ---------------------------------------------------------------
'r' open for reading (default)
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'a' open for writing, appending to the end of the file if it exists
'b' binary mode
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========= ===============================================================
The default mode is 'rt' (open for reading text). For binary random
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enabled. Lines in the input can end in '\n', '\r', or '\r\n', and
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caller. If it is '', universal newline mode is enabled, but line
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string, and the line ending is returned to the caller untranslated.
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The newly created file is non-inheritable.
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descriptor (passing os.open as *opener* results in functionality similar to
passing None).
open() returns a file object whose type depends on the mode, and
through which the standard file operations such as reading and writing
are performed. When open() is used to open a file in a text mode ('w',
'r', 'wt', 'rt', etc.), it returns a TextIOWrapper. When used to open
a file in a binary mode, the returned class varies: in read binary
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Even though IOBase does not declare read or write because
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may raise UnsupportedOperation when operations they do not support are
called.
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Text I/O classes work with str data.
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IOBase (and its subclasses) support the iterator protocol, meaning
that an IOBase object can be iterated over yielding the lines in a
stream.
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implementation, but wrap one.
r c C s | � d� dS )a� Read and return up to size bytes, where size is an int.
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the byte count (unless EOF is reached first). But for
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r� Nr\ r| rA rA rB r� � s zBufferedIOBase.readc C s | � d� dS )zaRead up to size bytes with at most one read() system call,
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r� Nr\ r� rA rA rB r� � s zBufferedIOBase.writec C s | � d� dS )z�
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�zFileIO.__repr__c C s | j std��d S )NzFile not open for reading)r� rV r` rA rA rB rp Y s zFileIO._checkReadablec C s | j std��d S )NzFile not open for writing)r� rV rl rA rA rB rr ] s zFileIO._checkWritablec C sT | � � | �� |dks |dk r(| �� S zt�| j|�W S tk
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r c C s | � d� dS )z�Read at most size characters from stream, where size is an int.
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r� Nr\ r| rA rA rB r� s zTextIOBase.readc C s | � d� dS )z.Write string s to stream and returning an int.r� Nr\ )rI �srA rA rB r� ( s zTextIOBase.writeNc C s | � d� dS )z*Truncate size to pos, where pos is an int.rb Nr\ rc rA rA rB rb , s zTextIOBase.truncatec C s | � d� dS )z_Read until newline or EOF.
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r� Nr\ r` rA rA rB r� 0 s zTextIOBase.readlinec C s | � d� dS )z�
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r� Nr\ r` rA rA rB r� 7 s zTextIOBase.detachc C s dS )zSubclasses should override.NrA r` rA rA rB r8 @ s zTextIOBase.encodingc C s dS )z�Line endings translated so far.
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NrA r` rA rA rB �newlinesE s zTextIOBase.newlinesc C s dS )zMError setting of the decoder or encoder.
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dMdN� �Z+dS )Wr3 a Character and line based layer over a BufferedIOBase object, buffer.
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or '\r\n' are translated to '\n' before being returned to the
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S )�_localized_monthc C s g | ]}t �d |d d�j�qS �i� r( ��datetime�date�strftime��.0�ir r r �
<listcomp>4 s z_localized_month.<listcomp>� r c C s dS )N� r )�xr r r �<lambda>5 � z_localized_month.<lambda>c C s
|| _ d S r ��format�r r= r r r r 7 s z_localized_month.__init__c s4 � j | }t|t�r&� fdd�|D �S |� j�S d S )Nc s g | ]}|� j ��qS r r< �r4 �fr! r r r6 = s z0_localized_month.__getitem__.<locals>.<listcomp>)�_months�
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z _localized_month.__getitem__c C s dS )N�
r r! r r r �__len__A s z_localized_month.__len__N) r$ r% r& �rangerA �insertr rE rG r r r r r- 2 s
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S ) �_localized_dayc C s g | ]}t �d d|d �j�qS r. r/ r3 r r r r6 H s z_localized_day.<listcomp>� c C s
|| _ d S r r< r> r r r r J s z_localized_day.__init__c s4 � j | }t|t�r&� fdd�|D �S |� j�S d S )Nc s g | ]}|� j ��qS r r< r? r! r r r6 P s z._localized_day.__getitem__.<locals>.<listcomp>)�_daysrB rC r= rD r r! r rE M s
z_localized_day.__getitem__c C s dS �NrK r r! r r r rG T s z_localized_day.__len__N)r$ r% r& rH rL r rE rG r r r r rJ E s rJ z%Az%az%Bz%brK c C s$ | d dko"| d dkp"| d dkS )z5Return True for leap years, False for non-leap years.� r �d � r )�yearr r r r d s c C s@ | d8 } |d8 }|d | d |d | d |d | d S )zFReturn number of leap years in range [y1, y2).
Assume y1 <= y2.r( rN rO rP r )Zy1Zy2r r r r i s c C s8 t j| krt jks&n d| d } t �| ||��� S )zBReturn weekday (0-6 ~ Mon-Sun) for year, month (1-12), day (1-31).i� rP )r0 ZMINYEARZMAXYEARr1 r )rQ r
�dayr r r r q s c C sJ d| krdks n t |��t| |d�}t| |tko>t| � }||fS )zQReturn weekday (0-6 ~ Mon-Sun) and number of days (28-31) for
year, month.r( r7 )r r �mdays�Februaryr )rQ r
�day1�ndaysr r r r
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c C s t | |tkot| � S r )rS rT r �rQ r
r r r � _monthlen� s rX c C s$ |dkr| d dfS | |d fS d S )Nr( r7 r rW r r r �
_prevmonth� s rY c C s$ |dkr| d dfS | |d fS d S )Nr7 r( r rW r r r �
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Base calendar class. This class doesn't do any formatting. It simply
provides data to subclasses.
r c C s
|| _ d S r �r �r r r r r r � s zCalendar.__init__c C s
| j d S rM �Z
_firstweekdayr! r r r �getfirstweekday� s zCalendar.getfirstweekdayc C s
|| _ d S r r] r\ r r r r � s zCalendar.setfirstweekdayc c s& t | j| jd �D ]}|d V qdS )zt
Return an iterator for one week of weekday numbers starting with the
configured first one.
rK N)rH r )r r5 r r r � iterweekdays� s zCalendar.iterweekdaysc c s, | � ||�D ]\}}}t�|||�V q dS )z�
Return an iterator for one month. The iterator will yield datetime.date
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dates outside the specified month.
N)�itermonthdays3r0 r1 )r rQ r
�y�m�dr r r �itermonthdates� s zCalendar.itermonthdatesc c sf t ||�\}}|| j d }td|�E dH td|d �E dH | j| | d }td|�E dH dS )z�
Like itermonthdates(), but will yield day numbers. For days outside
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days_afterr r r �
itermonthdays� s zCalendar.itermonthdaysc c s0 t | �||�| j�D ]\}}||d fV qdS )z�
Like itermonthdates(), but will yield (day number, weekday number)
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rK N)� enumeraterg r )r rQ r
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Like itermonthdates(), but will yield (year, month, day) tuples. Can be
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rK r( N)r
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Like itermonthdates(), but will yield (year, month, day, day_of_week) tuples.
Can be used for dates outside of datetime.date range.
rK N)rh r` r )r rQ r
r5 ra rb rc r r r �itermonthdays4� s zCalendar.itermonthdays4c s. t | �||��� � fdd�tdt� �d�D �S )z�
Return a matrix (list of lists) representing a month's calendar.
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c s g | ]}� ||d � �qS �rK r r3 �Zdatesr r r6 � s z/Calendar.monthdatescalendar.<locals>.<listcomp>r rK )�listrd rH �len�r rQ r
r rm r �monthdatescalendar� s zCalendar.monthdatescalendarc s. t | �||��� � fdd�tdt� �d�D �S )z�
Return a matrix representing a month's calendar.
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are zero.
c s g | ]}� ||d � �qS rl r r3 ��daysr r r6 � s z/Calendar.monthdays2calendar.<locals>.<listcomp>r rK )rn ri rH ro rp r rr r �monthdays2calendar� s zCalendar.monthdays2calendarc s. t | �||��� � fdd�tdt� �d�D �S )z�
Return a matrix representing a month's calendar.
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c s g | ]}� ||d � �qS rl r r3 rr r r r6 � s z.Calendar.monthdayscalendar.<locals>.<listcomp>r rK )rn rg rH ro rp r rr r �monthdayscalendar� s zCalendar.monthdayscalendar� c s> ��fdd�t ttd �D �� � �fdd�t dt� ���D �S )a'
Return the data for the specified year ready for formatting. The return
value is a list of month rows. Each month row contains up to width months.
Each month contains between 4 and 6 weeks and each week contains 1-7
days. Days are datetime.date objects.
c s g | ]}� � �|��qS r )rq r3 �r rQ r r r6 s �z.Calendar.yeardatescalendar.<locals>.<listcomp>r7 c s g | ]}� ||� � �qS r r r3 ��months�widthr r r6 s r �rH �Januaryro �r rQ rz r �ry r rz rQ r �yeardatescalendar� s �zCalendar.yeardatescalendarc s> ��fdd�t ttd �D �� � �fdd�t dt� ���D �S )z�
Return the data for the specified year ready for formatting (similar to
yeardatescalendar()). Entries in the week lists are
(day number, weekday number) tuples. Day numbers outside this month are
zero.
c s g | ]}� � �|��qS r )rt r3 rw r r r6 s �z.Calendar.yeardays2calendar.<locals>.<listcomp>r7 c s g | ]}� ||� � �qS r r r3 rx r r r6 s r r{ r} r r~ r �yeardays2calendar s �zCalendar.yeardays2calendarc s> ��fdd�t ttd �D �� � �fdd�t dt� ���D �S )z�
Return the data for the specified year ready for formatting (similar to
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c s g | ]}� � �|��qS r )ru r3 rw r r r6 s �z-Calendar.yeardayscalendar.<locals>.<listcomp>r7 c s g | ]}� ||� � �qS r r r3 rx r r r6 " s r r{ r} r r~ r �yeardayscalendar s �zCalendar.yeardayscalendarN)r )rv )rv )rv )r$ r% r& �__doc__r r^ r �propertyr r_ rd rg ri r` rk rq rt ru r r� r� r r r r r � s"
c @ sj e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
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Subclass of Calendar that outputs a calendar as a simple plain text
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Print a single week (no newline).
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� c 3 s | ]\}}� � ||��V qd S r �r� �r4 rc Zwd�r rz r r � <genexpr>? s z*TextCalendar.formatweek.<locals>.<genexpr>��joinr� r r� r r� ; s zTextCalendar.formatweekc C s( |dkrt }nt}|| d|� �|�S )z4
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r� c 3 s | ]}� � |��V qd S r �r� r3 r� r r r� O s z0TextCalendar.formatweekheader.<locals>.<genexpr>�r� r_ r� r r� r �formatweekheaderK s z TextCalendar.formatweekheaderTc C s" t | }|rd||f }|�|�S )z0
Return a formatted month name.
�%s %r)r r� �r �theyear�themonthrz �withyearr� r r r �formatmonthnameQ s z TextCalendar.formatmonthnamer c C s t | �||||�dd� dS )z+
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r) r( rK r� rF c 3 s | ]}�� �|� d �V qdS )FN)r� �r4 �k)�colwidthr r� r r r� � s �z*TextCalendar.formatyear.<locals>.<genexpr>c 3 s | ]
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r8 c 3 s | ]}� � |�V qd S r r� r3 r! r r r� � s z0HTMLCalendar.formatweekheader.<locals>.<genexpr>r� r� )r r� r r! r r� � s z HTMLCalendar.formatweekheaderTc C s0 |rdt | |f }n dt | }d| j|f S )z5
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Based on RFC 959: File Transfer Protocol (FTP), by J. Postel and J. Reynolds
Example:
>>> from ftplib import FTP
>>> ftp = FTP('ftp.python.org') # connect to host, default port
>>> ftp.login() # default, i.e.: user anonymous, passwd anonymous@
'230 Guest login ok, access restrictions apply.'
>>> ftp.retrlines('LIST') # list directory contents
total 9
drwxr-xr-x 8 root wheel 1024 Jan 3 1994 .
drwxr-xr-x 8 root wheel 1024 Jan 3 1994 ..
drwxr-xr-x 2 root wheel 1024 Jan 3 1994 bin
drwxr-xr-x 2 root wheel 1024 Jan 3 1994 etc
d-wxrwxr-x 2 ftp wheel 1024 Sep 5 13:43 incoming
drwxr-xr-x 2 root wheel 1024 Nov 17 1993 lib
drwxr-xr-x 6 1094 wheel 1024 Sep 13 19:07 pub
drwxr-xr-x 3 root wheel 1024 Jan 3 1994 usr
-rw-r--r-- 1 root root 312 Aug 1 1994 welcome.msg
'226 Transfer complete.'
>>> ftp.quit()
'221 Goodbye.'
>>>
A nice test that reveals some of the network dialogue would be:
python ftplib.py -d localhost -l -p -l
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The first four arguments are all strings, and have default value ''.
timeout must be numeric and defaults to None if not passed,
meaning that no timeout will be set on any ftp socket(s)
If a timeout is passed, then this is now the default timeout for all ftp
socket operations for this instance.
Then use self.connect() with optional host and port argument.
To download a file, use ftp.retrlines('RETR ' + filename),
or ftp.retrbinary() with slightly different arguments.
To upload a file, use ftp.storlines() or ftp.storbinary(),
which have an open file as argument (see their definitions
below for details).
The download/upload functions first issue appropriate TYPE
and PORT or PASV commands.
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z FTP.__exit__����c C s� |dkr|| _ |dkr || _|dkr*|| _|dk r8|| _t�d| | j | j� tj| j | jf| j| jd�| _| jj | _
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r r r) Nzftplib.connect�r �r��encoding)r �portr r �sys�audit�socket�create_connectionr" �family�af�makefiler- �file�getresp�welcome)r r r. r r r r r r � s �
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|| _ dS )z�Set the debugging level.
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|| _ dS )z�Use passive or active mode for data transfers.
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z4an illegal newline character should not be containedzftplib.sendcmdr z*put*) �
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z FTP.putlinec C s$ | j rtd| �|�� | �|� d S )Nz*cmd*)r9 r: r; rS rQ r r r �putcmd� s z
FTP.putcmdc C s� | j �| jd �}t|�| jkr.td| j ��| jdkrHtd| �|�� |sPt�|dd � t krn|d d� }n |dd � t kr�|d d� }|S )Nr �got more than %d bytesz*get*������)
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z FTP.getlinec C s` | � � }|dd� dkr\|d d� }| � � }|d| }|d d� |kr$|dd� dkr$q\q$|S )N� � �-rL )rZ )r rR �codeZnextliner r r � getmultiline� s �zFTP.getmultilinec C sp | � � }| jr td| �|�� |d d� | _|d d� }|dkrD|S |dkrTt|��|dkrdt|��t|��d S )Nz*resp*r[ r > �1�3�2�4�5)r_ r9 r: r; Zlastrespr r r )r �resp�cr r r r7 � s z FTP.getrespc C s$ | � � }|dd� dkr t|��|S )z%Expect a response beginning with '2'.Nr rb )r7 r �r re r r r �voidresp� s z FTP.voidrespc C sT dt }| jdkr"td| �|�� | j�|t� | �� }|dd� dkrPt|��|S )z�Abort a file transfer. Uses out-of-band data.
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z FTP.abortc C s | � |� | �� S )z'Send a command and return the response.)rT r7 �r �cmdr r r �sendcmd s
z FTP.sendcmdc C s | � |� | �� S )z8Send a command and expect a response beginning with '2'.)rT rh rr r r r �voidcmd s
z FTP.voidcmdc C sB |� d�}t|d �t|d �g}|| }dd�|� }| �|�S )zUSend a PORT command with the current host and the given
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�.� zPORT �,)�splitrH �joinru )r r r. ZhbytesZpbytes�bytesrs r r r �sendport s
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| j� |S )z3Create a new socket and send a PORT command for it.)r r r )r3 Zbacklogr ) r1 Z
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C s6 d}| j r�| �� \}}tj||f| j| jd�}zL|dk rF| �d| � | �|�}|d dkrd| �� }|d dkrxt|��W n |� � � Y nX n�| �
� �r}|dk r�| �d| � | �|�}|d dkr�| �� }|d dkr�t|��|� � \}} | jt k �r
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| j� W 5 Q R X |dd� dk�r.t|�}||fS ) a� Initiate a transfer over the data connection.
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transfer command, and accept the connection. If the server is
passive, send a pasv command, connect to it, and start the
transfer command. Either way, return the socket for the
connection and the expected size of the transfer. The
expected size may be None if it could not be determined.
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argument to a REST command. This is essentially a server
marker used to tell the server to skip over any data up to the
given marker.
Nr* zREST %sr rb r` r[ �150)r? r� r1 r2 r r rt r7 r r# r� Zacceptr r� �parse150)
r rs �rest�sizer r. �connre r" Zsockaddrr r r � ntransfercmdL s> �
zFTP.ntransfercmdc C s | � ||�d S )z0Like ntransfercmd() but returns only the socket.r )r� )r rs r� r r r � transfercmd� s zFTP.transfercmdc C s� |sd}|sd}|sd}|dkr0|dkr0|d }| � d| �}|d dkrX| � d| �}|d dkrr| � d | �}|d d
kr�t|��|S ) zLogin, default anonymous.Z anonymousr > r r] z
anonymous@zUSER r ra rC �ACCT rb �rt r )r r r r re r r r r � s z FTP.loginr c C s^ | � d� | �||��:}|�|�}|s(q2||� qtdk rLt|t�rL|�� W 5 Q R X | �� S )a� Retrieve data in binary mode. A new port is created for you.
Args:
cmd: A RETR command.
callback: A single parameter callable to be called on each
block of data read.
blocksize: The maximum number of bytes to read from the
socket at one time. [default: 8192]
rest: Passed to transfercmd(). [default: None]
Returns:
The response code.
�TYPE IN)ru r� Zrecv�
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retrbinary� s
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C s� |dkr t }| �d�}| �|���}|jd| jd���}|�| jd �}t|�| jkr`td| j ��| j dkrxt
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�r�|�� W 5 Q R X W 5 Q R X | �� S ) ah Retrieve data in line mode. A new port is created for you.
Args:
cmd: A RETR, LIST, or NLST command.
callback: An optional single parameter callable that is called
for each line with the trailing CRLF stripped.
[default: print_line()]
Returns:
The response code.
N�TYPE Ar+ r, r rU r} z*retr*rV rW rL )�
print_linert r� r5 r- rX rY rF r r9 r: rH rN r� r� r� rh )r rs r� re r� �fprR r r r � retrlines� s,
�
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FTP.retrlinesc C sl | � d� | �||��H}|�|�}|s(q@|�|� |r||� qtdk rZt|t�rZ|�� W 5 Q R X | �� S )a9 Store a file in binary mode. A new port is created for you.
Args:
cmd: A STOR command.
fp: A file-like object with a read(num_bytes) method.
blocksize: The maximum data size to read from fp and send over
the connection at once. [default: 8192]
callback: An optional single parameter callable that is called on
each block of data after it is sent. [default: None]
rest: Passed to transfercmd(). [default: None]
Returns:
The response code.
r� N)ru r� �readrO r� r� r� rh )r rs r� r� r� r� r� �bufr r r �
storbinary� s
zFTP.storbinaryc C s� | � d� | �|���}|�| jd �}t|�| jkrBtd| j ��|sHq�|dd� tkrx|d tkrp|dd� }|t }|�|� |r||� qtdk r�t |t�r�|�
� W 5 Q R X | � � S )ah Store a file in line mode. A new port is created for you.
Args:
cmd: A STOR command.
fp: A file-like object with a readline() method.
callback: An optional single parameter callable that is called on
each line after it is sent. [default: None]
Returns:
The response code.
r� r rU rV NrW ) ru r� rX rY rF r rn rO r� r� r� rh )r rs r� r� r� r� r r r � storlines� s"
z
FTP.storlinesc C s d| }| � |�S )zSend new account name.r� �ru )r Zpasswordrs r r r r s zFTP.acctc G s0 d}|D ]}|d| }qg }| � ||j� |S )zBReturn a list of files in a given directory (default the current).ZNLST� )r� �append)r r' rs �arg�filesr r r �nlst s zFTP.nlstc G sh d}d}|dd� r>t |d �t d�kr>|dd� |d }}|D ]}|rB|d| }qB| �||� dS )a List a directory in long form.
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LIST command. (This *should* only be used for a pathname.)ZLISTNrW r r� )�typer� )r r' rs �funcr� r r r �dir( s zFTP.dirc
c s� |r | � dd�|� d � |r*d| }nd}g }| �||j� |D ]\}|�t��d�\}}}i } |dd� �d�D ] }
|
�d�\} }} | | | �� < qt|| fV qDdS ) a< List a directory in a standardized format by using MLSD
command (RFC-3659). If path is omitted the current directory
is assumed. "facts" is a list of strings representing the type
of information desired (e.g. ["type", "size", "perm"]).
Return a generator object yielding a tuple of two elements
for every file found in path.
First element is the file name, the second one is a dictionary
including a variable number of "facts" depending on the server
and whether "facts" argument has been provided.
z
OPTS MLST �;zMLSD %sZMLSDr� NrW �=) rt rz r� r� rG rN � partitionry �lower)
r �pathZfactsrs �linesrR Z facts_found�_�name�entryZfact�key�valuer r r �mlsd7 s
zFTP.mlsdc C s0 | � d| �}|d dkr"t|��| �d| �S )zRename a file.zRNFR r ra zRNTO )rt r ru )r ZfromnameZtonamere r r r �renameS s z
FTP.renamec C s. | � d| �}|dd� dkr"|S t|��dS )zDelete a file.zDELE Nr[ > �250�200r� )r �filenamere r r r �deleteZ s z
FTP.deletec
C sp |dkrRz | � d�W S tk
rN } z |jd dd� dkr>� W 5 d}~X Y q^X n |dkr^d}d | }| � |�S )
zChange to a directory.z..ZCDUPr Nr[ �500r rv zCWD )ru r r' )r �dirname�msgrs r r r �cwdb s zFTP.cwdc C s: | � d| �}|dd� dkr6|dd� �� }t|�S dS )z Retrieve the size of a file.zSIZE Nr[ Z213)rt �strip�int)r r� re rI r r r r� o s zFTP.sizec C s$ | � d| �}|�d�s dS t|�S )z+Make a directory, return its full pathname.zMKD �257r �ru �
startswith�parse257)r r� re r r r �mkdw s
zFTP.mkdc C s | � d| �S )zRemove a directory.zRMD r� )r r� r r r �rmd� s zFTP.rmdc C s | � d�}|�d�sdS t|�S )z!Return current working directory.ZPWDr� r r� rg r r r �pwd� s
zFTP.pwdc C s | � d�}| �� |S )z Quit, and close the connection.ZQUIT)ru r# rg r r r r$ � s
zFTP.quitc C sD z | j}d| _|dk r |�� W 5 | j }d| _ |dk r>|�� X dS )z8Close the connection without assuming anything about it.N)r" r# r6 )r r" r6 r r r r# � s z FTP.close)r r r) N)N)N)r r r )r N)N)r NN)N);r r r �__doc__r9 r �FTP_PORTr. �MAXLINErY r" r6 r8 r? r- r� r r r! r( r r< r> �debugrA r; rS rT rZ r_ r7 rh rq rt ru r| r� r� r� r� r� r r� r� r� r� r r� r� r� r� r� r� r� r� r� r� r$ r# r r r r r J sp �
7
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c @ sn e Zd ZdZejZdddddddedf dd�Zddd�Z d d
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ddd�Zdd� ZdS )�FTP_TLSa� A FTP subclass which adds TLS support to FTP as described
in RFC-4217.
Connect as usual to port 21 implicitly securing the FTP control
connection before authenticating.
Securing the data connection requires user to explicitly ask
for it by calling prot_p() method.
Usage example:
>>> from ftplib import FTP_TLS
>>> ftps = FTP_TLS('ftp.python.org')
>>> ftps.login() # login anonymously previously securing control channel
'230 Guest login ok, access restrictions apply.'
>>> ftps.prot_p() # switch to secure data connection
'200 Protection level set to P'
>>> ftps.retrlines('LIST') # list directory content securely
total 9
drwxr-xr-x 8 root wheel 1024 Jan 3 1994 .
drwxr-xr-x 8 root wheel 1024 Jan 3 1994 ..
drwxr-xr-x 2 root wheel 1024 Jan 3 1994 bin
drwxr-xr-x 2 root wheel 1024 Jan 3 1994 etc
d-wxrwxr-x 2 ftp wheel 1024 Sep 5 13:43 incoming
drwxr-xr-x 2 root wheel 1024 Nov 17 1993 lib
drwxr-xr-x 6 1094 wheel 1024 Sep 13 19:07 pub
drwxr-xr-x 3 root wheel 1024 Jan 3 1994 usr
-rw-r--r-- 1 root root 312 Aug 1 1994 welcome.msg
'226 Transfer complete.'
>>> ftps.quit()
'221 Goodbye.'
>>>
r Nc
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zFTP_TLS.prot_pc C s | � d�}d| _|S )z"Set up clear text data connection.zPROT CFr� rg r r r �prot_c s
zFTP_TLS.prot_cc C s2 t �| ||�\}}| jr*| jj|| jd�}||fS )Nr� )r r� r� r� r� r )r rs r� r� r� r r r r� s �zFTP_TLS.ntransfercmdc C s8 dt }| j�|� | �� }|d d� dkr4t|��|S )Nri r[ rj )rn r" rO r_ r rp r r r rq s z
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r� c C s\ | dd� dkrt | ��tdkr<ddl}|�d|j|jB �at�| �}|sNdS t|�d��S )z�Parse the '150' response for a RETR request.
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r� c C s� | dd� dkrt | ��tdkr6ddl}|�d|j�at�| �}|sLt| ��|�� }d�|dd� �}t |d �d> t |d � }||fS )
z�Parse the '227' response for a PASV request.
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r� c C s� | dd� dkrt | ��| �d�}|dk r2t| ��| �d|d �}|dk rRt| ��| |d | |d krrt| ��| |d |� �| |d �}t|�dkr�t| ��|d }t|d �}||fS ) z�Parse the '229' response for an EPSV request.
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r� c C s� | dd� dkrt | ��| dd� dkr,dS d}d}t| �}||k r�| | }|d }|dkrz||ks�| | dkrrq�|d }|| }q<|S ) z�Parse the '257' response for a MKD or PWD request.
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The Python Debugger Pdb
=======================
To use the debugger in its simplest form:
>>> import pdb
>>> pdb.run('<a statement>')
The debugger's prompt is '(Pdb) '. This will stop in the first
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Alternatively, if a statement terminated with an unhandled exception,
you can use pdb's post-mortem facility to inspect the contents of the
traceback:
>>> <a statement>
<exception traceback>
>>> import pdb
>>> pdb.pm()
The commands recognized by the debugger are listed in the next
section. Most can be abbreviated as indicated; e.g., h(elp) means
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statements and are executed in the context of the program being
debugged. Python statements can also be prefixed with an exclamation
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have parameters (see the alias help entry) which allows one a certain
level of adaptability to the context under examination.
Multiple commands may be entered on a single line, separated by the
pair ';;'. No intelligence is applied to separating the commands; the
input is split at the first ';;', even if it is in the middle of a
quoted string.
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directory, it is read in and executed as if it had been typed at the
debugger prompt. This is particularly useful for aliases. If both
files exist, the one in the home directory is read first and aliases
defined there can be overridden by the local file. This behavior can be
disabled by passing the "readrc=False" argument to the Pdb constructor.
Aside from aliases, the debugger is not directly programmable; but it
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Debugger commands
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r: | �d� Y q X q d S )NTFz--KeyboardInterrupt--)rF �cmdlooprU rV r1 r r r ry < s z Pdb._cmdloopc C s^ | j �| j�}|rZ|�� D ]>\}}| �|�}||k r||kr|||< | �d|||f � qd S )Nzdisplay %s: %r [old: %r])r@ �getr^ �items�_getval_exceptrV )r2 r@ �exprZoldvalueZnewvaluer r r �preloopI s
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zPdb.handle_command_defc C s t || jd� d S )N��file��printrT �r2 �msgr r r rV � s z Pdb.messagec C s t d|| jd� d S )Nz***r� r� r� r r r r� � s z Pdb.errorc C s� |� � �d�rg S z| �||||�}W n tk
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|�rX|� � �d�rX|� |d � qX|S )N)�:�,�*�/)�.pyz.pywr� ) rk �endswith�_complete_expression� Exception�globr rI rJ �isdirr� �isfile�lower)r2 �textr �begidx�endidxZret�globs�fnr r r �_complete_location� s
zPdb._complete_locationc s � fdd�t tjj�D �S )Nc s. g | ]&\}}|d k rt |��� �rt |��qS r0 )r� �
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zPdb._complete_expressionc C s, |st tjj�d }n&z t|�}W n | �d� Y dS X || _|| jkrj| j| | j| | j | f}nd}g | j|< d| j|< d| j |< | j
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a4 commands [bpnumber]
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Specify a list of commands for breakpoint number bpnumber.
The commands themselves are entered on the following lines.
Type a line containing just 'end' to terminate the commands.
The commands are executed when the breakpoint is hit.
To remove all commands from a breakpoint, type commands and
follow it immediately with end; that is, give no commands.
With no bpnumber argument, commands refers to the last
breakpoint set.
You can use breakpoint commands to start your program up
again. Simply use the continue command, or step, or any other
command that resumes execution.
Specifying any command resuming execution (currently continue,
step, next, return, jump, quit and their abbreviations)
terminates the command list (as if that command was
immediately followed by end). This is because any time you
resume execution (even with a simple next or step), you may
encounter another breakpoint -- which could have its own
command list, leading to ambiguities about which list to
execute.
If you use the 'silent' command in the command list, the usual
message about stopping at a breakpoint is not printed. This
may be desirable for breakpoints that are to print a specific
message and then continue. If none of the other commands
print anything, you will see no sign that the breakpoint was
reached.
r z.Usage: commands [bnum]
...
endNTFz(com) r r� z1command definition aborted, old commands restored)�lenr7 r� r� �intr� rQ rM rN rO r> rP r� rU )r2 r� ZbnumZold_command_defsZ prompt_backr r r � do_commands sB %
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a� b(reak) [ ([filename:]lineno | function) [, condition] ]
Without argument, list all breaks.
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current file. With a function name, set a break at the first
executable line of that function. If a second argument is
present, it is a string specifying an expression which must
evaluate to true before the breakpoint is honored.
The line number may be prefixed with a filename and a colon,
to specify a breakpoint in another file (probably one that
hasn't been loaded yet). The file is searched for on
sys.path; the .py suffix may be omitted.
z!Num Type Disp Enb WhereNr� r r r� z%r not found from sys.pathzBad lineno: %s�__func__zJThe specified object %r is not a function or was not found along sys.path.r| zBreakpoint %d at %s:%d) �breaksrV r7 r� r� Zbpformatr� r� r� �rfind� lookupmoduler� r� r� �evalr^ r# rd �hasattrr� �__code__�co_name�co_firstlinenorq �lineinfo� defaultFile� checklineZ set_break�
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zPdb.defaultFilec C s | � |d� dS )z�tbreak [ ([filename:]lineno | function) [, condition] ]
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C s� d}|� d�}t|�dkr(|d �� }n t|�dkrB|d �� }n|S |dkrR|S |� d�}|d dkr~|d= t|�dkr~|S | �� }t|�dkr�|d }n | �|d �}|r�|}|d }t||�} | p�|S ) N)NNN�'r r � r6 r� r2 )r� r� rk r� r� r! )
r2 Z
identifierZfailedZidstring�id�partsZfname�itemrf Zanswerr r r r� � s.
z Pdb.lineinfoc C s� t | d�r| jjnd}t�|||�}|s6| �d� dS |�� }|rn|d dksn|dd� dksn|dd� dkr|| �d � dS |S )
z�Check whether specified line seems to be executable.
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line or EOF). Warning: testing is not comprehensive.
r^ Nz End of filer ri r� z"""z'''zBlank or comment)r� r^ r# � linecache�getlinerV rk r� )r2 r r r� r r r r r� � s
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rJ } z| �|� W 5 d}~X Y q X |�� | �d| � q dS )z�enable bpnumber [bpnumber ...]
Enables the breakpoints given as a space separated list of
breakpoint numbers.
Nz
Enabled %s)r� �get_bpbynumberr� r� �enablerV �r2 r� r� r- r� r� r r r � do_enable s z
Pdb.do_enablec C sh |� � }|D ]V}z| �|�}W n, tk
rJ } z| �|� W 5 d}~X Y q X |�� | �d| � q dS )aN disable bpnumber [bpnumber ...]
Disables the breakpoints given as a space separated list of
breakpoint numbers. Disabling a breakpoint means it cannot
cause the program to stop execution, but unlike clearing a
breakpoint, it remains in the list of breakpoints and can be
(re-)enabled.
Nz Disabled %s)r� r� r� r� �disablerV r� r r r �
do_disable s zPdb.do_disablec
C s� |� dd�}z |d }W n tk
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r� } z| �|� W 5 d}~X Y n.X ||_|s�| �d|j � n| �d|j � dS )a# condition bpnumber [condition]
Set a new condition for the breakpoint, an expression which
must evaluate to true before the breakpoint is honored. If
condition is absent, any existing condition is removed; i.e.,
the breakpoint is made unconditional.
r� r Nr �Breakpoint number expectedz#Breakpoint %d is now unconditional.z$New condition set for breakpoint %d.) r� �
IndexErrorr� rk r� r� r� rV r� )r2 r� r� r� r� r� r r r � do_condition% s
zPdb.do_conditionc
C s� |� � }zt|d �� �}W n d}Y nX z| �|d �� �}W nH tk
rb | �d� Y nv tk
r� } z| �|� W 5 d}~X Y nLX ||_|dkr�|dkr�d| }nd}| �d||j f � n| �d|j � dS ) a� ignore bpnumber [count]
Set the ignore count for the given breakpoint number. If
count is omitted, the ignore count is set to 0. A breakpoint
becomes active when the ignore count is zero. When non-zero,
the count is decremented each time the breakpoint is reached
and the breakpoint is not disabled and any associated
condition evaluates to true.
r r r� Nz %d crossingsz
1 crossingz%Will ignore next %s of breakpoint %d.z-Will stop next time breakpoint %d is reached.)
r� r� rk r� r r� r� �ignorerV r� )r2 r� r� �countr� r� Zcountstrr r r � do_ignore@ s,
��z
Pdb.do_ignorec
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r( d}Y nX |�� �� }|dkrpdd� tjjD �}| �� |D ]}| �d| � q\dS d|k�r|� d�}|d|� }||d d� }z t
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||�}|r�| �|� n|D ]}| �d| � q�dS |�� } | D ]\}z| �|�}W n. t k
�r^ } z| �|� W 5 d}~X Y nX | �|� | �d| � �q dS ) a= cl(ear) filename:lineno
cl(ear) [bpnumber [bpnumber...]]
With a space separated list of breakpoint numbers, clear
those breakpoints. Without argument, clear all breaks (but
first ask confirmation). With a filename:lineno argument,
clear all breaks at that line in that file.
zClear all breaks? Zno)�yZyesc S s g | ] }|r|�qS r r )r� r� r r r r� q s z Pdb.do_clear.<locals>.<listcomp>z
Deleted %sNr� r zInvalid line number (%s))�input�EOFErrorrk r� r7 r� r� Zclear_all_breaksrV r� r� r� r� Z clear_breakr� r� r� Zclear_bpbynumber)
r2 r� ZreplyZbplistr� r- r r r� Z
numberlistr r r �do_clearc sF
z Pdb.do_clearc C s | � � dS )z�w(here)
Print a stack trace, with the most recent frame at the bottom.
An arrow indicates the "current frame", which determines the
context of most commands. 'bt' is an alias for this command.
N)�print_stack_tracer� r r r �do_where� s z Pdb.do_wherec C s^ d| krt | j�k s n t�|| _| j| j d | _| jj| _| �| j| j � d | _d S r( ) r� r\ �AssertionErrorr] r^ r$ rd rx r )r2 r� r r r �
_select_frame� s
zPdb._select_framec C sz | j dkr| �d� dS zt|p"d�}W n$ tk
rL | �d| � Y dS X |dk r\d}ntd| j | �}| �|� dS )z�u(p) [count]
Move the current frame count (default one) levels up in the
stack trace (to an older frame).
r z Oldest frameNr �Invalid frame count (%s))r] r� r� r� �maxr �r2 r� r Znewframer r r �do_up� s
z Pdb.do_upc C s� | j d t| j�kr"| �d� dS zt|p,d�}W n$ tk
rV | �d| � Y dS X |dk rpt| j�d }ntt| j�d | j | �}| �|� dS )z�d(own) [count]
Move the current frame count (default one) levels down in the
stack trace (to a newer frame).
r z Newest frameNr
r )r] r� r\ r� r� r� �minr r r r r �do_down� s
z Pdb.do_downc C sh |rRz t |�}W n$ tk
r4 | �d| � Y dS X || jjkrV| �d� dS nd}| �| j|� dS )aN unt(il) [lineno]
Without argument, continue execution until the line with a
number greater than the current one is reached. With a line
number, continue execution until a line with a number greater
or equal to that is reached. In both cases, also stop when
the current frame returns.
�Error in argument: %rNz7"until" line number is smaller than current line numberr )r� r� r� r^ rr Z set_until)r2 r� r r r r �do_until� s
z Pdb.do_untilc C s | � � dS )z�s(tep)
Execute the current line, stop at the first possible occasion
(either in a function that is called or in the current
function).
r )rW r� r r r �do_step� s z Pdb.do_stepc C s | � | j� dS )zxn(ext)
Continue execution until the next line in the current function
is reached or it returns.
r )Zset_nextr^ r� r r r �do_next� s z Pdb.do_nextc C s< |r4ddl }tjdd� }|�|�t_|tjdd�< t�dS )a run [args...]
Restart the debugged python program. If a string is supplied
it is split with "shlex", and the result is used as the new
sys.argv. History, breakpoints, actions and debugger options
are preserved. "restart" is an alias for "run".
r Nr )�shlexr< �argvr� r )r2 r� r Zargv0r r r �do_run� s z
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Continue execution until the current function returns.
r )Z
set_returnr^ r� r r r � do_return s z
Pdb.do_returnc C s> | j s2zt�tj| j�t_W n tk
r0 Y nX | �� dS )z]c(ont(inue))
Continue execution, only stop when a breakpoint is encountered.
r )rG r� r� rY r r� r� Z set_continuer� r r r � do_continue s �zPdb.do_continuec
C s� | j d t| j�kr"| �d� dS z t|�}W n tk
rL | �d� Y nnX z:|| j_| j| j d |f| j| j < | �| j| j � W n0 tk
r� } z| �d| � W 5 d}~X Y nX dS )a� j(ump) lineno
Set the next line that will be executed. Only available in
the bottom-most frame. This lets you jump back and execute
code again, or jump forward to skip code that you don't want
to run.
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instance it is not possible to jump into the middle of a
for loop or out of a finally clause.
r z)You can only jump within the bottom frameNz)The 'jump' command requires a line numberr zJump failed: %s) r] r� r\ r� r� r� r^ rr rx )r2 r� �er r r �do_jump& s
z Pdb.do_jumpc C s� t �d� | jj}| j}t| j| j| j�}d| j �
� |_ | � d� zt � |j
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r� t �� dd� }| �tj|� d �
� � Y nX | � d� t �| j� |j| _dS )z�debug code
Enter a recursive debugger that steps through the code
argument (which is an arbitrary expression or statement to be
executed in the current environment).
Nz(%s) zENTERING RECURSIVE DEBUGGERr� r| zLEAVING RECURSIVE DEBUGGER)r< �settracer^ r# rd r rR rS rT r> rk rV � call_tracingr r� r� r� r~ r Ztrace_dispatchrw )r2 r� r� r� �pr� r r r �do_debugC s
z Pdb.do_debugc C s d| _ | �� dS )z[q(uit)
exit
Quit from the debugger. The program being executed is aborted.
Tr )�_user_requested_quit�set_quitr� r r r �do_quitZ s z Pdb.do_quitc C s | � d� d| _| �� dS )z=EOF
Handles the receipt of EOF as a command.
r6 Tr )rV r" r# r� r r r �do_EOFe s
z
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Print the argument list of the current function.
r z%s = %rz%s = *** undefined ***N) r^ ra rd � co_argcount�co_kwonlyargcount�co_flagsr" Z
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Print the return value for the last return of a function.
rz zNot yet returned!N)rd rV r� r� r� r r r � do_retval s
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r� r^ r# rd r< r� r� r~ r rk )r2 r� r� r r r �_getval� s z Pdb._getvalc C sr z2|d kr t || jj| j�W S t ||j|j�W S W n: t�� d d� }tj|� d � � }t
d| � Y S X d S )Nr� r| z** raised %s **) r� r^ r# rd r$ r< r� r~ r rk r/ )r2 r� rX r� r� r r r r� � s zPdb._getval_exceptc C s* z| � t| �|��� W n Y nX dS )z@p expression
Print the value of the expression.
N)rV r� r0 r� r r r �do_p� s zPdb.do_pc C s, z| � t�| �|��� W n Y nX dS )zHpp expression
Pretty-print the value of the expression.
N)rV �pprintZpformatr0 r� r r r �do_pp� s z Pdb.do_ppc C sf d| _ d}|r�|dkr�z^d|krX|�d�\}}t|�� �}t|�� �}||k rr|| }nt|�� �}td|d �}W q� tk
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a� l(ist) [first [,last] | .]
List source code for the current file. Without arguments,
list 11 lines around the current line or continue the previous
listing. With . as argument, list 11 lines around the current
line. With one argument, list 11 lines starting at that line.
With two arguments, list the given range; if the second
argument is less than the first, it is a count.
The current line in the current frame is indicated by "->".
If an exception is being debugged, the line where the
exception was originally raised or propagated is indicated by
">>", if it differs from the current line.
r) Nr� r� r � r �
z[EOF])rw r� r� rk r r� r� r r^ rr ra rq �get_file_breaksr� �getlinesr# � _print_linesr r� rV rU )r2 r� Zlast�firstr � breaklistr& r r r �do_list� s@
�z Pdb.do_listc
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List the whole source code for the current function or frame.
N)r^ ra rq r6 r' r r� r8 )r2 r� r r: r& r r� r r r � do_longlist� s
zPdb.do_longlistc
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Try to get source code for the given object and display it.
N)r0 r' r � TypeErrorr� r8 )r2 r� r% r& r r� r r r � do_source� s
z
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zPrint a range of lines.r| r� � r� �Bz->z>>� N) rr rC r� r r� �rjustr� rV r� )
r2 r& r r� rX Zcurrent_linenoZ
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zPdb._print_linesc C s� z| � |�}W n Y dS X d}z |jj}W n tk
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\b Matches the empty string, but only at the start or end of a word.
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\D Matches any non-digit character; equivalent to [^\d].
\s Matches any whitespace character; equivalent to [ \t\n\r\f\v] in
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match Match a regular expression pattern to the beginning of a string.
fullmatch Match a regular expression pattern to all of a string.
search Search a string for the presence of a pattern.
sub Substitute occurrences of a pattern found in a string.
subn Same as sub, but also return the number of substitutions made.
split Split a string by the occurrences of a pattern.
findall Find all occurrences of a pattern in a string.
finditer Return an iterator yielding a Match object for each match.
compile Compile a pattern into a Pattern object.
purge Clear the regular expression cache.
escape Backslash all non-alphanumerics in a string.
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A, L, and U are mutually exclusive.
A ASCII For string patterns, make \w, \W, \b, \B, \d, \D
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r a9 Defines the interface for stateless encoders/decoders.
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'strict' - raise a ValueError error (or a subclass)
'ignore' - ignore the character and continue with the next
'replace' - replace with a suitable replacement character;
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'surrogateescape' - replace with private code points U+DCnn.
'xmlcharrefreplace' - Replace with the appropriate XML
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buffer slot. Python strings, buffer objects and memory
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errors defines the error handling to apply. It defaults to
'strict' handling.
The method may not store state in the Codec instance. Use
StreamReader for codecs which have to keep state in order to
make decoding efficient.
The decoder must be able to handle zero length input and
return an empty object of the output object type in this
situation.
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An IncrementalEncoder encodes an input in multiple steps. The input can
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Creates an IncrementalEncoder instance.
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providing the errors keyword argument. See the module docstring
for a list of possible values.
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Resets the encoder to the initial state.
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An IncrementalDecoder decodes an input in multiple steps. The input can
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Create an IncrementalDecoder instance.
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Decode input and returns the resulting object.
NrF rO r; r; r< r$ s zIncrementalDecoder.decodec C s dS )z9
Reset the decoder to the initial state.
Nr; rA r; r; r< rQ s zIncrementalDecoder.resetc C s dS )a
Return the current state of the decoder.
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buffered_input must be a bytes object containing bytes that
were passed to decode() that have not yet been converted.
additional_state_info must be a non-negative integer
representing the state of the decoder WITHOUT yet having
processed the contents of buffered_input. In the initial state
and after reset(), getstate() must return (b"", 0).
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Set the current state of the decoder.
state must have been returned by getstate(). The effect of
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This subclass of IncrementalDecoder can be used as the baseclass for an
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dd� Z dS )r rE c C s || _ || _dS )aw Creates a StreamWriter instance.
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'strict' - raise a ValueError (or a subclass)
'ignore' - ignore the character and continue with the next
'replace'- replace with a suitable replacement character
'xmlcharrefreplace' - Replace with the appropriate XML
character reference.
'backslashreplace' - Replace with backslashed escape
sequences.
'namereplace' - Replace with \N{...} escape sequences.
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register_error.
N)�streamrJ �r: rd rJ r; r; r< rN \ s zStreamWriter.__init__c C s" | � || j�\}}| j�|� dS )z> Writes the object's contents encoded to self.stream.
N)r# rJ rd �write)r: �objectr[ r] r; r; r< rf u s zStreamWriter.writec C s | � d�|�� dS )z[ Writes the concatenated list of strings to the stream
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writelines| s zStreamWriter.writelinesc C s dS )a5 Flushes and resets the codec buffers used for keeping state.
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zStreamWriter.resetr c C s* | j �||� |dkr&|dkr&| �� d S r^ �rd �seekrQ �r: �offset�whencer; r; r< rm � s zStreamWriter.seekc C s || j |�S �z? Inherit all other methods from the underlying stream.
�rd �r: r4 �getattrr; r; r< � __getattr__� s zStreamWriter.__getattr__c C s | S r1 r; rA r; r; r< � __enter__� s zStreamWriter.__enter__c C s | j �� d S r1 �rd �close�r: �type�value�tbr; r; r< �__exit__� s zStreamWriter.__exit__N)rE )r ) rC r> r? rN rf rk rQ rm rt ru rv r} r; r; r; r< r Z s
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schemes by providing the errors keyword argument. These
parameters are predefined:
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'ignore' - ignore the character and continue with the next
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register_error.
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S )a� Decodes data from the stream self.stream and returns the
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size indicates the approximate maximum number of decoded
bytes or code points to read for decoding. The decoder
can modify this setting as appropriate. The default value
-1 indicates to read and decode as much as possible. size
is intended to prevent having to decode huge files in one
step.
If firstline is true, and a UnicodeDecodeError happens
after the first line terminator in the input only the first line
will be returned, the rest of the input will be kept until the
next call to read().
The method should use a greedy read strategy, meaning that
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definition of the encoding and the given size, e.g. if
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on the stream, these should be read too.
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k r^|d9 }q^|S )z� Read one line from the input stream and return the
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zStreamReader.readlinec C s | � � }|�|�S )aS Read all lines available on the input stream
and return them as a list.
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method and are included in the list entries.
sizehint, if given, is ignored since there is no efficient
way to finding the true end-of-line.
)r� r� )r: �sizehintr� r[ r; r; r< � readlines^ s zStreamReader.readlinesc C s d| _ | j| _d| _dS )z� Resets the codec buffers used for keeping state.
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from decoding errors.
r` N)r~ r� r� r� rA r; r; r< rQ m s zStreamReader.resetr c C s | j �||� | �� dS )zp Set the input stream's current position.
Resets the codec buffers used for keeping state.
Nrl rn r; r; r< rm z s zStreamReader.seekc C s | � � }|r|S t�dS )�4 Return the next decoded line from the input stream.N)r� �
StopIteration)r: r� r; r; r< �__next__� s zStreamReader.__next__c C s | S r1 r; rA r; r; r< �__iter__� s zStreamReader.__iter__c C s || j |�S rq rr rs r; r; r< ru � s zStreamReader.__getattr__c C s | S r1 r; rA r; r; r< rv � s zStreamReader.__enter__c C s | j �� d S r1 rw ry r; r; r< r} � s zStreamReader.__exit__)rE )rE )r� r� F)NT)NT)r )rC r> r? r� r rN r$ r� r� r� rQ rm r� r� rt ru rv r} r; r; r; r< r � s
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d%dd�Zefdd �Zd d � Zd d � Zd S )&r a StreamReaderWriter instances allow wrapping streams which
work in both read and write modes.
The design is such that one can use the factory functions
returned by the codec.lookup() function to construct the
instance.
�unknownrE c C s( || _ |||�| _|||�| _|| _dS )aR Creates a StreamReaderWriter instance.
stream must be a Stream-like object.
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StreamWriter/Readers.
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zStreamReaderWriter.__init__r� c C s | j �|�S r1 )r� r� �r: r� r; r; r< r� � s zStreamReaderWriter.readNc C s | j �|�S r1 )r� r� r� r; r; r< r� � s zStreamReaderWriter.readlinec C s | j �|�S r1 )r� r� )r: r� r; r; r< r� � s z StreamReaderWriter.readlinesc C s
t | j�S �r� )�nextr� rA r; r; r< r� � s zStreamReaderWriter.__next__c C s | S r1 r; rA r; r; r< r� � s zStreamReaderWriter.__iter__c C s | j �|�S r1 )r� rf )r: r[ r; r; r< rf � s zStreamReaderWriter.writec C s | j �|�S r1 )r� rk ri r; r; r< rk � s z StreamReaderWriter.writelinesc C s | j �� | j�� d S r1 �r� rQ r� rA r; r; r< rQ � s
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zStreamReaderWriter.seekc C s || j |�S rq rr rs r; r; r< ru � s z StreamReaderWriter.__getattr__c C s | S r1 r; rA r; r; r< rv � s z StreamReaderWriter.__enter__c C s | j �� d S r1 rw ry r; r; r< r} � s zStreamReaderWriter.__exit__)rE )r� )N)N)r )rC r> r? rD �encodingrN r� r� r� r� r� rf rk rQ rm rt ru rv r} r; r; r; r< r � s
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dd� Zd%dd�Zefdd �Zd d � Zd d � Zd S )&r aB StreamRecoder instances translate data from one encoding to another.
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codecs.lookup() function to implement their task.
Data written to the StreamRecoder is first decoded into an
intermediate format (depending on the "decode" codec) and then
written to the underlying stream using an instance of the provided
Writer class.
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a Reader instance and then encoded and returned to the caller.
r� rE c C s4 || _ || _|| _|||�| _|||�| _|| _dS )a� Creates a StreamRecoder instance which implements a two-way
conversion: encode and decode work on the frontend (the
data visible to .read() and .write()) while Reader and Writer
work on the backend (the data in stream).
You can use these objects to do transparent
transcodings from e.g. latin-1 to utf-8 and back.
stream must be a file-like object.
encode and decode must adhere to the Codec interface; Reader and
Writer must be factory functions or classes providing the
StreamReader and StreamWriter interfaces resp.
Error handling is done in the same way as defined for the
StreamWriter/Readers.
N)rd r# r$ r� r� rJ )r: rd r# r$ r� r� rJ r; r; r< rN s zStreamRecoder.__init__r� c C s" | j �|�}| �|| j�\}}|S r1 )r� r� r# rJ �r: r� r[ � bytesencodedr; r; r< r� # s zStreamRecoder.readNc C s6 |d kr| j �� }n | j �|�}| �|| j�\}}|S r1 )r� r� r# rJ r� r; r; r< r� ) s
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zStreamRecoder.resetr c C s | j �||� | j�||� d S r1 )r� rm r� rn r; r; r< rm R s zStreamRecoder.seekc C s || j |�S rq rr rs r; r; r< ru X s zStreamRecoder.__getattr__c C s | S r1 r; rA r; r; r< rv _ s zStreamRecoder.__enter__c C s | j �� d S r1 rw ry r; r; r< r} b s zStreamRecoder.__exit__)rE )r� )N)N)r )rC r> r? rD �
data_encoding�
file_encodingrN r� r� r� r� r� rf rk rQ rm rt ru rv r} r; r; r; r< r � s$ �
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�rrE r� c C st |dk rd|kr|d }t �| ||�}|dkr2|S z&t|�}t||j|j|�}||_|W S |�� � Y nX dS )aq Open an encoded file using the given mode and return
a wrapped version providing transparent encoding/decoding.
Note: The wrapped version will only accept the object format
defined by the codecs, i.e. Unicode objects for most builtin
codecs. Output is also codec dependent and will usually be
Unicode as well.
Underlying encoded files are always opened in binary mode.
The default file mode is 'r', meaning to open the file in read mode.
encoding specifies the encoding which is to be used for the
file.
errors may be given to define the error handling. It defaults
to 'strict' which causes ValueErrors to be raised in case an
encoding error occurs.
buffering has the same meaning as for the builtin open() API.
It defaults to -1 which means that the default buffer size will
be used.
The returned wrapped file object provides an extra attribute
.encoding which allows querying the used encoding. This
attribute is only available if an encoding was specified as
parameter.
N�b)�builtinsr r r r8 r7 r� rx )�filename�moder� rJ � buffering�file�info�srwr; r; r< r g s �c C sF |dkr |}t |�}t |�}t| |j|j|j|j|�}||_||_|S )a� Return a wrapped version of file which provides transparent
encoding translation.
Data written to the wrapped file is decoded according
to the given data_encoding and then encoded to the underlying
file using file_encoding. The intermediate data type
will usually be Unicode but depends on the specified codecs.
Bytes read from the file are decoded using file_encoding and then
passed back to the caller encoded using data_encoding.
If file_encoding is not given, it defaults to data_encoding.
errors may be given to define the error handling. It defaults
to 'strict' which causes ValueErrors to be raised in case an
encoding error occurs.
The returned wrapped file object provides two extra attributes
.data_encoding and .file_encoding which reflect the given
parameters of the same name. The attributes can be used for
introspection by Python programs.
N)r r r# r$ r8 r7 r� r� )r� r� r� rJ � data_info� file_info�srr; r; r< r � s �c C s
t | �jS )z� Lookup up the codec for the given encoding and return
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)r r$ r� r; r; r< r � s c C s t | �j}|dkrt| ��|S )z� Lookup up the codec for the given encoding and return
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c C s t | �j}|dkrt| ��|S )z� Lookup up the codec for the given encoding and return
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)r r8 r� r; r; r< r! � s c C s
t | �jS )z� Lookup up the codec for the given encoding and return
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)r r7 r� r; r; r< r" � s c k sH t |�|f|�}| D ]}|�|�}|r|V q|�dd�}|rD|V dS )z�
Encoding iterator.
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errors and kwargs are passed through to the IncrementalEncoder
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rK TN)r r# )�iteratorr� rJ �kwargsr� rI �outputr; r; r< r% s
c k sH t |�|f|�}| D ]}|�|�}|r|V q|�dd�}|rD|V dS )z�
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Decodes the input strings from the iterator using an IncrementalDecoder.
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c C s dd� | D �S )z� make_identity_dict(rng) -> dict
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<dictcomp>/ s z&make_identity_dict.<locals>.<dictcomp>r; )�rngr; r; r< �make_identity_dict' s r� c C s4 i }| � � D ]"\}}||kr&|||< q d||< q |S )a� Creates an encoding map from a decoding map.
If a target mapping in the decoding map occurs multiple
times, then that target is mapped to None (undefined mapping),
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multiple character to \u001a.
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than using new(name):
md5(), sha1(), sha224(), sha256(), sha384(), sha512(), blake2b(), blake2s(),
sha3_224, sha3_256, sha3_384, sha3_512, shake_128, and shake_256.
More algorithms may be available on your platform but the above are guaranteed
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>>> import hashlib
>>> m = hashlib.md5()
>>> m.update(b"Nobody inspects")
>>> m.update(b" the spammish repetition")
>>> m.digest()
b'\xbbd\x9c\x83\xdd\x1e\xa5\xc9\xd9\xde\xc9\xa1\x8d\xf0\xff\xe9'
More condensed:
>>> hashlib.sha224(b"Nobody inspects the spammish repetition").hexdigest()
'a4337bc45a8fc544c03f52dc550cd6e1e87021bc896588bd79e901e2'
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The Python Debugger Pdb
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To use the debugger in its simplest form:
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disabled by passing the "readrc=False" argument to the Pdb constructor.
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� S r( )r[ Z get_stackr\ r] r. �tb_frame�f_code�tb_lastirC �tb_nextr^ r$ �curframe_locals� execRcLines)r2 �f�tbr r r r �setup� s
z Pdb.setupc C sd | j s
d S | j }|�� g | _ |r`|�� �� }|r |d dkr | �|�r | j t|�7 _ dS q d S )Nr �#T)rH r+ �pop�strip�onecmd�reversed)r2 rH r r r r re � s
zPdb.execRcLinesc C s. | j r
dS | �|�r*| �d� | �|d� dS )znThis method is called when there is the remote possibility
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argument_listr r r � user_call� s
z
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z
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| r�| � � | � � dS dS )z�Call every command that was set for the current active breakpoint
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zPdb.bp_commandsc C s. | j r
dS ||jd< | �d� | �|d� dS )z7This function is called when a return trap is set here.N�
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r: | �d� Y q X q d S )NTFz--KeyboardInterrupt--)rF �cmdlooprU rV r1 r r r ry < s z Pdb._cmdloopc C s^ | j �| j�}|rZ|�� D ]>\}}| �|�}||k r||kr|||< | �d|||f � qd S )Nzdisplay %s: %r [old: %r])r@ �getr^ �items�_getval_exceptrV )r2 r@ �exprZoldvalueZnewvaluer r r �preloopI s
�z Pdb.preloopc C st t jr6zt�tjt j� W n tk
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Pdb.precmdc C s" | j stj�| |�S | �|�S dS )z�Interpret the argument as though it had been typed in response
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Pdb.onecmdc C s� | � |�\}}}|sdS |dkr0d| j| j< dS |dkrBg | _dS | j| j }|rf|�|d | � n
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zPdb.handle_command_defc C s t || jd� d S )N��file��printrT �r2 �msgr r r rV � s z Pdb.messagec C s t d|| jd� d S )Nz***r� r� r� r r r r� � s z Pdb.errorc C s� |� � �d�rg S z| �||||�}W n tk
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zPdb._complete_expressionc C s, |st tjj�d }n&z t|�}W n | �d� Y dS X || _|| jkrj| j| | j| | j | f}nd}g | j|< d| j|< d| j |< | j
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(com) ...
(com) end
(Pdb)
Specify a list of commands for breakpoint number bpnumber.
The commands themselves are entered on the following lines.
Type a line containing just 'end' to terminate the commands.
The commands are executed when the breakpoint is hit.
To remove all commands from a breakpoint, type commands and
follow it immediately with end; that is, give no commands.
With no bpnumber argument, commands refers to the last
breakpoint set.
You can use breakpoint commands to start your program up
again. Simply use the continue command, or step, or any other
command that resumes execution.
Specifying any command resuming execution (currently continue,
step, next, return, jump, quit and their abbreviations)
terminates the command list (as if that command was
immediately followed by end). This is because any time you
resume execution (even with a simple next or step), you may
encounter another breakpoint -- which could have its own
command list, leading to ambiguities about which list to
execute.
If you use the 'silent' command in the command list, the usual
message about stopping at a breakpoint is not printed. This
may be desirable for breakpoints that are to print a specific
message and then continue. If none of the other commands
print anything, you will see no sign that the breakpoint was
reached.
r z.Usage: commands [bnum]
...
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a� b(reak) [ ([filename:]lineno | function) [, condition] ]
Without argument, list all breaks.
With a line number argument, set a break at this line in the
current file. With a function name, set a break at the first
executable line of that function. If a second argument is
present, it is a string specifying an expression which must
evaluate to true before the breakpoint is honored.
The line number may be prefixed with a filename and a colon,
to specify a breakpoint in another file (probably one that
hasn't been loaded yet). The file is searched for on
sys.path; the .py suffix may be omitted.
z!Num Type Disp Enb WhereNr� r r r� z%r not found from sys.pathzBad lineno: %s�__func__zJThe specified object %r is not a function or was not found along sys.path.r| zBreakpoint %d at %s:%d) �breaksrV r7 r� r� Zbpformatr� r� r� �rfind� lookupmoduler� r� r� �evalr^ r# rd �hasattrr� �__code__�co_name�co_firstlinenorq �lineinfo� defaultFile� checklineZ set_break�
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zPdb.defaultFilec C s | � |d� dS )z�tbreak [ ([filename:]lineno | function) [, condition] ]
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r2 Z
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z Pdb.lineinfoc C s� t | d�r| jjnd}t�|||�}|s6| �d� dS |�� }|rn|d dksn|dd� dksn|dd� dkr|| �d � dS |S )
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r^ Nz End of filer ri r� z"""z'''zBlank or comment)r� r^ r# � linecache�getlinerV rk r� )r2 r r r� r r r r r� � s
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rJ } z| �|� W 5 d}~X Y q X |�� | �d| � q dS )z�enable bpnumber [bpnumber ...]
Enables the breakpoints given as a space separated list of
breakpoint numbers.
Nz
Enabled %s)r� �get_bpbynumberr� r� �enablerV �r2 r� r� r- r� r� r r r � do_enable s z
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rJ } z| �|� W 5 d}~X Y q X |�� | �d| � q dS )aN disable bpnumber [bpnumber ...]
Disables the breakpoints given as a space separated list of
breakpoint numbers. Disabling a breakpoint means it cannot
cause the program to stop execution, but unlike clearing a
breakpoint, it remains in the list of breakpoints and can be
(re-)enabled.
Nz Disabled %s)r� r� r� r� �disablerV r� r r r �
do_disable s zPdb.do_disablec
C s� |� dd�}z |d }W n tk
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r� } z| �|� W 5 d}~X Y n.X ||_|s�| �d|j � n| �d|j � dS )a# condition bpnumber [condition]
Set a new condition for the breakpoint, an expression which
must evaluate to true before the breakpoint is honored. If
condition is absent, any existing condition is removed; i.e.,
the breakpoint is made unconditional.
r� r Nr �Breakpoint number expectedz#Breakpoint %d is now unconditional.z$New condition set for breakpoint %d.) r� �
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zPdb.do_conditionc
C s� |� � }zt|d �� �}W n d}Y nX z| �|d �� �}W nH tk
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r� } z| �|� W 5 d}~X Y nLX ||_|dkr�|dkr�d| }nd}| �d||j f � n| �d|j � dS ) a� ignore bpnumber [count]
Set the ignore count for the given breakpoint number. If
count is omitted, the ignore count is set to 0. A breakpoint
becomes active when the ignore count is zero. When non-zero,
the count is decremented each time the breakpoint is reached
and the breakpoint is not disabled and any associated
condition evaluates to true.
r r r� Nz %d crossingsz
1 crossingz%Will ignore next %s of breakpoint %d.z-Will stop next time breakpoint %d is reached.)
r� r� rk r� r r� r� �ignorerV r� )r2 r� r� �countr� r� Zcountstrr r r � do_ignore@ s,
��z
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�r^ } z| �|� W 5 d}~X Y nX | �|� | �d| � �q dS ) a= cl(ear) filename:lineno
cl(ear) [bpnumber [bpnumber...]]
With a space separated list of breakpoint numbers, clear
those breakpoints. Without argument, clear all breaks (but
first ask confirmation). With a filename:lineno argument,
clear all breaks at that line in that file.
zClear all breaks? Zno)�yZyesc S s g | ] }|r|�qS r r )r� r� r r r r� q s z Pdb.do_clear.<locals>.<listcomp>z
Deleted %sNr� r zInvalid line number (%s))�input�EOFErrorrk r� r7 r� r� Zclear_all_breaksrV r� r� r� r� Z clear_breakr� r� r� Zclear_bpbynumber)
r2 r� ZreplyZbplistr� r- r r r� Z
numberlistr r r �do_clearc sF
z Pdb.do_clearc C s | � � dS )z�w(here)
Print a stack trace, with the most recent frame at the bottom.
An arrow indicates the "current frame", which determines the
context of most commands. 'bt' is an alias for this command.
N)�print_stack_tracer� r r r �do_where� s z Pdb.do_wherec C s> || _ | j| j d | _| jj| _| �| j| j � d | _d S r( )r] r\ r^ r$ rd rx r )r2 r� r r r �
_select_frame� s
zPdb._select_framec C sz | j dkr| �d� dS zt|p"d�}W n$ tk
rL | �d| � Y dS X |dk r\d}ntd| j | �}| �|� dS )z�u(p) [count]
Move the current frame count (default one) levels up in the
stack trace (to an older frame).
r z Oldest frameNr �Invalid frame count (%s))r] r� r� r� �maxr �r2 r� r Znewframer r r �do_up� s
z Pdb.do_upc C s� | j d t| j�kr"| �d� dS zt|p,d�}W n$ tk
rV | �d| � Y dS X |dk rpt| j�d }ntt| j�d | j | �}| �|� dS )z�d(own) [count]
Move the current frame count (default one) levels down in the
stack trace (to a newer frame).
r z Newest frameNr r )r] r� r\ r� r� r� �minr r r r r �do_down� s
z Pdb.do_downc C sh |rRz t |�}W n$ tk
r4 | �d| � Y dS X || jjkrV| �d� dS nd}| �| j|� dS )aN unt(il) [lineno]
Without argument, continue execution until the line with a
number greater than the current one is reached. With a line
number, continue execution until a line with a number greater
or equal to that is reached. In both cases, also stop when
the current frame returns.
�Error in argument: %rNz7"until" line number is smaller than current line numberr )r� r� r� r^ rr Z set_until)r2 r� r r r r �do_until� s
z Pdb.do_untilc C s | � � dS )z�s(tep)
Execute the current line, stop at the first possible occasion
(either in a function that is called or in the current
function).
r )rW r� r r r �do_step� s z Pdb.do_stepc C s | � | j� dS )zxn(ext)
Continue execution until the next line in the current function
is reached or it returns.
r )Zset_nextr^ r� r r r �do_next� s z Pdb.do_nextc C s< |r4ddl }tjdd� }|�|�t_|tjdd�< t�dS )a run [args...]
Restart the debugged python program. If a string is supplied
it is split with "shlex", and the result is used as the new
sys.argv. History, breakpoints, actions and debugger options
are preserved. "restart" is an alias for "run".
r Nr )�shlexr< �argvr� r )r2 r� r Zargv0r r r �do_run� s z
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Continue execution until the current function returns.
r )Z
set_returnr^ r� r r r � do_return s z
Pdb.do_returnc C s> | j s2zt�tj| j�t_W n tk
r0 Y nX | �� dS )z]c(ont(inue))
Continue execution, only stop when a breakpoint is encountered.
r )rG r� r� rY r r� r� Z set_continuer� r r r � do_continue s �zPdb.do_continuec
C s� | j d t| j�kr"| �d� dS z t|�}W n tk
rL | �d� Y nnX z:|| j_| j| j d |f| j| j < | �| j| j � W n0 tk
r� } z| �d| � W 5 d}~X Y nX dS )a� j(ump) lineno
Set the next line that will be executed. Only available in
the bottom-most frame. This lets you jump back and execute
code again, or jump forward to skip code that you don't want
to run.
It should be noted that not all jumps are allowed -- for
instance it is not possible to jump into the middle of a
for loop or out of a finally clause.
r z)You can only jump within the bottom frameNz)The 'jump' command requires a line numberr zJump failed: %s) r] r� r\ r� r� r� r^ rr rx )r2 r� �er r r �do_jump& s
z Pdb.do_jumpc C s� t �d� | jj}| j}t| j| j| j�}d| j �
� |_ | � d� zt � |j
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r� t �� dd� }| �tj|� d �
� � Y nX | � d� t �| j� |j| _dS )z�debug code
Enter a recursive debugger that steps through the code
argument (which is an arbitrary expression or statement to be
executed in the current environment).
Nz(%s) zENTERING RECURSIVE DEBUGGERr� r| zLEAVING RECURSIVE DEBUGGER)r< �settracer^ r# rd r rR rS rT r> rk rV � call_tracingr r� r� r� r~ r Ztrace_dispatchrw )r2 r� r� r� �pr� r r r �do_debugC s
z Pdb.do_debugc C s d| _ | �� dS )z[q(uit)
exit
Quit from the debugger. The program being executed is aborted.
Tr )�_user_requested_quit�set_quitr� r r r �do_quitZ s z Pdb.do_quitc C s | � d� d| _| �� dS )z=EOF
Handles the receipt of EOF as a command.
r6 Tr )rV r! r" r� r r r �do_EOFe s
z
Pdb.do_EOFc C s� | j j}| j}|j|j }|jtj@ r.|d }|jtj@ rB|d }t |�D ]>}|j
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Print the argument list of the current function.
r z%s = %rz%s = *** undefined ***N) r^ ra rd � co_argcount�co_kwonlyargcount�co_flagsr" Z
CO_VARARGSZCO_VARKEYWORDS�range� co_varnamesrV )r2 r� �co�dictr� r- �namer r r �do_argsn s
z Pdb.do_argsc C s. d| j kr | �t| j d �� n
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Print the return value for the last return of a function.
rz zNot yet returned!N)rd rV r� r� r� r r r � do_retval s
z
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r� r^ r# rd r< r� r� r~ r rk )r2 r� r� r r r �_getval� s z Pdb._getvalc C sr z2|d kr t || jj| j�W S t ||j|j�W S W n: t�� d d� }tj|� d � � }t
d| � Y S X d S )Nr� r| z** raised %s **) r� r^ r# rd r$ r< r� r~ r rk r/ )r2 r� rX r� r� r r r r� � s zPdb._getval_exceptc C s* z| � t| �|��� W n Y nX dS )z@p expression
Print the value of the expression.
N)rV r� r/ r� r r r �do_p� s zPdb.do_pc C s, z| � t�| �|��� W n Y nX dS )zHpp expression
Pretty-print the value of the expression.
N)rV �pprintZpformatr/ r� r r r �do_pp� s z Pdb.do_ppc C sf d| _ d}|r�|dkr�z^d|krX|�d�\}}t|�� �}t|�� �}||k rr|| }nt|�� �}td|d �}W q� tk
r� | �d| � Y dS X n0| jdks�|dkr�td| jj d �}n
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A pathlib-compatible interface for zip files.
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.
├── a.txt
└── b
├── c.txt
└── d
└── e.txt
>>> data = io.BytesIO()
>>> zf = ZipFile(data, 'w')
>>> zf.writestr('a.txt', 'content of a')
>>> zf.writestr('b/c.txt', 'content of c')
>>> zf.writestr('b/d/e.txt', 'content of e')
>>> zf.filename = 'abcde.zip'
Path accepts the zipfile object itself or a filename
>>> root = Path(zf)
From there, several path operations are available.
Directory iteration (including the zip file itself):
>>> a, b = root.iterdir()
>>> a
Path('abcde.zip', 'a.txt')
>>> b
Path('abcde.zip', 'b/')
name property:
>>> b.name
'b'
join with divide operator:
>>> c = b / 'c.txt'
>>> c
Path('abcde.zip', 'b/c.txt')
>>> c.name
'c.txt'
Read text:
>>> c.read_text()
'content of c'
existence:
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True
>>> (b / 'missing.txt').exists()
False
Coercion to string:
>>> str(c)
'abcde.zip/b/c.txt'
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�<module>< s �c poplib.cpython-38.pyc 0000644 00000032225 15145007335 0010470 0 ustar 00 U
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Minimal Command Set:
USER name user(name)
PASS string pass_(string)
STAT stat()
LIST [msg] list(msg = None)
RETR msg retr(msg)
DELE msg dele(msg)
NOOP noop()
RSET rset()
QUIT quit()
Optional Commands (some servers support these):
RPOP name rpop(name)
APOP name digest apop(name, digest)
TOP msg n top(msg, n)
UIDL [msg] uidl(msg = None)
CAPA capa()
STLS stls()
UTF8 utf8()
Raises one exception: 'error_proto'.
Instantiate with:
POP3(hostname, port=110)
NB: the POP protocol locks the mailbox from user
authorization until QUIT, so be sure to get in, suck
the messages, and quit, each time you access the
mailbox.
POP is a line-based protocol, which means large mail
messages consume lots of python cycles reading them
line-by-line.
If it's available on your mail server, use IMAP4
instead, it doesn't suffer from the two problems
above.
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|| _ d S r )r )r �levelr r r �set_debuglevel� s zPOP3.set_debuglevelc C s | � d| �S )zVSend user name, return response
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zUSER %s�r8 �r �userr r r r@ � s z POP3.userc C s | � d| �S )z�Send password, return response
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POP3.pass_c C sF | � d�}|�� }| jr&tdt|�� t|d �}t|d �}||fS )z]Get mailbox status.
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ZSTATz*stat*r � )r8 �splitr r r �int)r ZretvalZretsZ numMessagesZ sizeMessagesr r r �stat� s
z POP3.statNc C s |dk r| � d| �S | �d�S )a Request listing, return result.
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single response: the "scan listing" for that message.
NzLIST %sZLIST�r8 r9 �r �whichr r r r6 � s z POP3.listc C s | � d| �S )zoRetrieve whole message number 'which'.
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zRETR %s�r9 rG r r r �retr� s z POP3.retrc C s | � d| �S )zFDelete message number 'which'.
Result is 'response'.
zDELE %sr> rG r r r �dele� s z POP3.delec C s
| � d�S )zXDoes nothing.
One supposes the response indicates the server is alive.
ZNOOPr> r: r r r �noop s z POP3.noopc C s
| � d�S )z(Unmark all messages marked for deletion.ZRSETr> r: r r r �rset s z POP3.rsetc C s | � d�}| �� |S )zDSignoff: commit changes on server, unlock mailbox, close connection.ZQUIT)r8 �close)r r2 r r r �quit s
z POP3.quitc C s� z | j }d| _ |dk r |�� W 5 | j }d| _ |dk r�zVz|�tj� W n@ tk
r� } z"|jtjkrxt|dd�dkrx� W 5 d}~X Y nX W 5 |�� X X dS )z8Close the connection without assuming anything about it.NZwinerrorr i&' )
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d||f �S )a Authorisation
- only possible if server has supplied a timestamp in initial greeting.
Args:
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password - mailbox password.
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z!-ERR APOP not supported by serverr Nr z
APOP %s %s) r% r& � timestamp�matchr r �hashlib�groupZmd5Z hexdigestr8 )r r@ ZpasswordZsecret�mrW Zdigestr r r �apop< s z POP3.apopc C s | � d||f �S )z�Retrieve message header of message number 'which'
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z TOP %s %srI )r rH Zhowmuchr r r �topQ s zPOP3.topc C s |dk r| � d| �S | �d�S )z�Return message digest (unique id) list.
If 'which', result contains unique id for that message
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NzUIDL %sZUIDLrF rG r r r �uidlZ s z POP3.uidlc C s
| � d�S )zITry to enter UTF-8 mode (see RFC 6856). Returns server response.
ZUTF8r> r: r r r �utf8f s z POP3.utf8c
C sp dd� }i }z4| � d�}|d }|D ]}||�\}}|||< q$W n* tk
rj } z td��W 5 d}~X Y nX |S )a Return server capabilities (RFC 2449) as a dictionary
>>> c=poplib.POP3('localhost')
>>> c.capa()
{'IMPLEMENTATION': ['Cyrus', 'POP3', 'server', 'v2.2.12'],
'TOP': [], 'LOGIN-DELAY': ['0'], 'AUTH-RESP-CODE': [],
'EXPIRE': ['NEVER'], 'USER': [], 'STLS': [], 'PIPELINING': [],
'UIDL': [], 'RESP-CODES': []}
>>>
Really, according to RFC 2449, the cyrus folks should avoid
having the implementation split into multiple arguments...
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�POP3_SSLa POP3 client class over SSL connection
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hostname - the hostname of the pop3 over ssl server
port - port number
keyfile - PEM formatted file that contains your private key
certfile - PEM formatted certificate chain file
context - a ssl.SSLContext
See the methods of the parent class POP3 for more documentation.
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Print a symbolic disassembly of a pickle.
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True
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'abcd'
>>> read_stringnl(io.BytesIO(b"\n"))
Traceback (most recent call last):
...
ValueError: no string quotes around b''
>>> read_stringnl(io.BytesIO(b"\n"), stripquotes=False)
''
>>> read_stringnl(io.BytesIO(b"''\n"))
''
>>> read_stringnl(io.BytesIO(b'"abcd"'))
Traceback (most recent call last):
...
ValueError: no newline found when trying to read stringnl
Embedded escapes are undone in the result.
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'a\n\\b\x00c\td'
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'Queue Empty'
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'abc'
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>>> import io
>>> read_string4(io.BytesIO(b"\x00\x00\x00\x00abc"))
''
>>> read_string4(io.BytesIO(b"\x03\x00\x00\x00abcdef"))
'abc'
>>> read_string4(io.BytesIO(b"\x00\x00\x00\x03abcdef"))
Traceback (most recent call last):
...
ValueError: expected 50331648 bytes in a string4, but only 6 remain
r zstring4 byte count < 0: %drD z2expected %d bytes in a string4, but only %d remainN)r* r r r% r: rE r r r � read_string4� s
�rH �string4z�A counted string.
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b'abc'
z1expected %d bytes in a bytes1, but only %d remainN)r! r r% r rE r r r � read_bytes1� s
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>>> import io
>>> read_bytes4(io.BytesIO(b"\x00\x00\x00\x00abc"))
b''
>>> read_bytes4(io.BytesIO(b"\x03\x00\x00\x00abcdef"))
b'abc'
>>> read_bytes4(io.BytesIO(b"\x00\x00\x00\x03abcdef"))
Traceback (most recent call last):
...
ValueError: expected 50331648 bytes in a bytes4, but only 6 remain
z#bytes4 byte count > sys.maxsize: %dz1expected %d bytes in a bytes4, but only %d remainN)r, �sys�maxsizer r r% rE r r r � read_bytes4� s
�rN �bytes4z�A counted bytes string.
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c C sP t | �}|tjkr td| ��| �|�}t|�|kr8|S td|t|�f ��dS )a�
>>> import io, struct, sys
>>> read_bytes8(io.BytesIO(b"\x00\x00\x00\x00\x00\x00\x00\x00abc"))
b''
>>> read_bytes8(io.BytesIO(b"\x03\x00\x00\x00\x00\x00\x00\x00abcdef"))
b'abc'
>>> bigsize8 = struct.pack("<Q", sys.maxsize//3)
>>> read_bytes8(io.BytesIO(bigsize8 + b"abcdef")) #doctest: +ELLIPSIS
Traceback (most recent call last):
...
ValueError: expected ... bytes in a bytes8, but only 6 remain
z#bytes8 byte count > sys.maxsize: %dz1expected %d bytes in a bytes8, but only %d remainN)r/ rL rM r r r% rE r r r � read_bytes8 s
�rP �bytes8z�A counted bytes string.
The first argument is an 8-byte little-endian unsigned int giving
the number of bytes, and the second argument is that many bytes.
c C sT t | �}|tjkr td| ��| �|�}t|�|kr<t|�S td|t|�f ��dS )a�
>>> import io, struct, sys
>>> read_bytearray8(io.BytesIO(b"\x00\x00\x00\x00\x00\x00\x00\x00abc"))
bytearray(b'')
>>> read_bytearray8(io.BytesIO(b"\x03\x00\x00\x00\x00\x00\x00\x00abcdef"))
bytearray(b'abc')
>>> bigsize8 = struct.pack("<Q", sys.maxsize//3)
>>> read_bytearray8(io.BytesIO(bigsize8 + b"abcdef")) #doctest: +ELLIPSIS
Traceback (most recent call last):
...
ValueError: expected ... bytes in a bytearray8, but only 6 remain
z'bytearray8 byte count > sys.maxsize: %dz5expected %d bytes in a bytearray8, but only %d remainN)r/ rL rM r r r% � bytearrayrE r r r �read_bytearray89 s
�rS �
bytearray8z�A counted bytearray.
The first argument is an 8-byte little-endian unsigned int giving
the number of bytes, and the second argument is that many bytes.
c C s0 | � � }|�d�std��|dd� }t|d�S )zm
>>> import io
>>> read_unicodestringnl(io.BytesIO(b"abc\\uabcd\njunk")) == 'abc\uabcd'
True
r1 z4no newline found when trying to read unicodestringnlNr zraw-unicode-escape)r5 r6 r �strr r r r �read_unicodestringnl[ s
rV �unicodestringnlz�A newline-terminated Unicode string.
This is raw-unicode-escape encoded, so consists of
printable ASCII characters, and may contain embedded
escape sequences.
c C sB t | �}| �|�}t|�|kr*t|dd�S td|t|�f ��dS )a�
>>> import io
>>> s = 'abcd\uabcd'
>>> enc = s.encode('utf-8')
>>> enc
b'abcd\xea\xaf\x8d'
>>> n = bytes([len(enc)]) # little-endian 1-byte length
>>> t = read_unicodestring1(io.BytesIO(n + enc + b'junk'))
>>> s == t
True
>>> read_unicodestring1(io.BytesIO(n + enc[:-1]))
Traceback (most recent call last):
...
ValueError: expected 7 bytes in a unicodestring1, but only 6 remain
�utf-8�
surrogatepassz9expected %d bytes in a unicodestring1, but only %d remainN)r! r r% rU r rE r r r �read_unicodestring1u s
�rZ �unicodestring1aA A counted Unicode string.
The first argument is a 1-byte little-endian signed int
giving the number of bytes in the string, and the second
argument-- the UTF-8 encoding of the Unicode string --
contains that many bytes.
c C sX t | �}|tjkr td| ��| �|�}t|�|kr@t|dd�S td|t|�f ��dS )a�
>>> import io
>>> s = 'abcd\uabcd'
>>> enc = s.encode('utf-8')
>>> enc
b'abcd\xea\xaf\x8d'
>>> n = bytes([len(enc), 0, 0, 0]) # little-endian 4-byte length
>>> t = read_unicodestring4(io.BytesIO(n + enc + b'junk'))
>>> s == t
True
>>> read_unicodestring4(io.BytesIO(n + enc[:-1]))
Traceback (most recent call last):
...
ValueError: expected 7 bytes in a unicodestring4, but only 6 remain
z+unicodestring4 byte count > sys.maxsize: %drX rY z9expected %d bytes in a unicodestring4, but only %d remainN)r, rL rM r r r% rU rE r r r �read_unicodestring4� s
�r\ �unicodestring4aA A counted Unicode string.
The first argument is a 4-byte little-endian signed int
giving the number of bytes in the string, and the second
argument-- the UTF-8 encoding of the Unicode string --
contains that many bytes.
c C sX t | �}|tjkr td| ��| �|�}t|�|kr@t|dd�S td|t|�f ��dS )a�
>>> import io
>>> s = 'abcd\uabcd'
>>> enc = s.encode('utf-8')
>>> enc
b'abcd\xea\xaf\x8d'
>>> n = bytes([len(enc)]) + b'\0' * 7 # little-endian 8-byte length
>>> t = read_unicodestring8(io.BytesIO(n + enc + b'junk'))
>>> s == t
True
>>> read_unicodestring8(io.BytesIO(n + enc[:-1]))
Traceback (most recent call last):
...
ValueError: expected 7 bytes in a unicodestring8, but only 6 remain
z+unicodestring8 byte count > sys.maxsize: %drX rY z9expected %d bytes in a unicodestring8, but only %d remainN)r/ rL rM r r r% rU rE r r r �read_unicodestring8� s
�r^ �unicodestring8aB A counted Unicode string.
The first argument is an 8-byte little-endian signed int
giving the number of bytes in the string, and the second
argument-- the UTF-8 encoding of the Unicode string --
contains that many bytes.
c C s. t | ddd�}|dkrdS |dkr&dS t|�S )z�
>>> import io
>>> read_decimalnl_short(io.BytesIO(b"1234\n56"))
1234
>>> read_decimalnl_short(io.BytesIO(b"1234L\n56"))
Traceback (most recent call last):
...
ValueError: invalid literal for int() with base 10: b'1234L'
F�r: r; s 00s 01T�r= �int�r �sr r r �read_decimalnl_short� s re c C s2 t | ddd�}|dd� dkr*|dd� }t|�S )z�
>>> import io
>>> read_decimalnl_long(io.BytesIO(b"1234L\n56"))
1234
>>> read_decimalnl_long(io.BytesIO(b"123456789012345678901234L\n6"))
123456789012345678901234
Fr` r N� Lra rc r r r �read_decimalnl_long s rg �decimalnl_shorta� A newline-terminated decimal integer literal.
This never has a trailing 'L', and the integer fit
in a short Python int on the box where the pickle
was written -- but there's no guarantee it will fit
in a short Python int on the box where the pickle
is read.
�decimalnl_longz�A newline-terminated decimal integer literal.
This has a trailing 'L', and can represent integers
of any size.
c C s t | ddd�}t|�S )zO
>>> import io
>>> read_floatnl(io.BytesIO(b"-1.25\n6"))
-1.25
Fr` )r= �floatrc r r r � read_floatnl- s rk �floatnla� A newline-terminated decimal floating literal.
In general this requires 17 significant digits for roundtrip
identity, and pickling then unpickling infinities, NaNs, and
minus zero doesn't work across boxes, or on some boxes even
on itself (e.g., Windows can't read the strings it produces
for infinities or NaNs).
c C s0 | � d�}t|�dkr$td|�d S td��dS )z�
>>> import io, struct
>>> raw = struct.pack(">d", -1.25)
>>> raw
b'\xbf\xf4\x00\x00\x00\x00\x00\x00'
>>> read_float8(io.BytesIO(raw + b"\n"))
-1.25
r. z>dr z(not enough data in stream to read float8Nr$ r r r r � read_float8C s
rm �float8a An 8-byte binary representation of a float, big-endian.
The format is unique to Python, and shared with the struct
module (format string '>d') "in theory" (the struct and pickle
implementations don't share the code -- they should). It's
strongly related to the IEEE-754 double format, and, in normal
cases, is in fact identical to the big-endian 754 double format.
On other boxes the dynamic range is limited to that of a 754
double, and "add a half and chop" rounding is used to reduce
the precision to 53 bits. However, even on a 754 box,
infinities, NaNs, and minus zero may not be handled correctly
(may not survive roundtrip pickling intact).
)� decode_longc C s. t | �}| �|�}t|�|kr&td��t|�S )a+
>>> import io
>>> read_long1(io.BytesIO(b"\x00"))
0
>>> read_long1(io.BytesIO(b"\x02\xff\x00"))
255
>>> read_long1(io.BytesIO(b"\x02\xff\x7f"))
32767
>>> read_long1(io.BytesIO(b"\x02\x00\xff"))
-256
>>> read_long1(io.BytesIO(b"\x02\x00\x80"))
-32768
z'not enough data in stream to read long1)r! r r% r ro rE r r r �
read_long1i s
rp �long1a A binary long, little-endian, using 1-byte size.
This first reads one byte as an unsigned size, then reads that
many bytes and interprets them as a little-endian 2's-complement long.
If the size is 0, that's taken as a shortcut for the long 0L.
c C sB t | �}|dk r td| ��| �|�}t|�|kr:td��t|�S )ag
>>> import io
>>> read_long4(io.BytesIO(b"\x02\x00\x00\x00\xff\x00"))
255
>>> read_long4(io.BytesIO(b"\x02\x00\x00\x00\xff\x7f"))
32767
>>> read_long4(io.BytesIO(b"\x02\x00\x00\x00\x00\xff"))
-256
>>> read_long4(io.BytesIO(b"\x02\x00\x00\x00\x00\x80"))
-32768
>>> read_long1(io.BytesIO(b"\x00\x00\x00\x00"))
0
r zlong4 byte count < 0: %dz'not enough data in stream to read long4)r* r r r% ro rE r r r �
read_long4� s
rr �long4a� A binary representation of a long, little-endian.
This first reads four bytes as a signed size (but requires the
size to be >= 0), then reads that many bytes and interprets them
as a little-endian 2's-complement long. If the size is 0, that's taken
as a shortcut for the int 0, although LONG1 should really be used
then instead (and in any case where # of bytes < 256).
c @ s e Zd ZdZdd� Zdd� ZdS )� StackObject�r �obtyper c C s* || _ t|t�r|D ]}q|| _|| _d S r )r �
isinstance�tuplerv r )r r rv r Z containedr r r r � s
zStackObject.__init__c C s | j S r �r )r r r r �__repr__� s zStackObject.__repr__N)r r r r r rz r r r r rt � s
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some other opcodes grab all the objects from the top of
the stack down to (but not including) the topmost marker
object.
�
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No matter how many object are on the stack after the topmost
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c @ s e Zd ZdZdd� ZdS )�
OpcodeInfo�r �code�arg� stack_before� stack_after�protor c C sB || _ || _|| _|D ]}q|| _|D ]}q&|| _|| _|| _d S r r� ) r r r� r� r� r� r� r �xr r r r d s zOpcodeInfo.__init__Nr r r r r r� E s r� ZINT�Ia� Push an integer or bool.
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and LONG then is that INT skips a trailing 'L', and produces a short
int whenever possible.
Another difference is due to that, when bool was introduced as a
distinct type in 2.3, builtin names True and False were also added to
2.2.2, mapping to ints 1 and 0. For compatibility in both directions,
True gets pickled as INT + "I01\n", and False as INT + "I00\n".
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This handles the full range of Python (short) integers on a 32-bit
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ZBININT1�Kz�Push a one-byte unsigned integer.
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ZBININT2�Mz�Push a two-byte unsigned integer.
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ZLONG�La� Push a long integer.
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conversion). Proto 2 added linear-time (in C; still quadratic-time
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ZLONG1� z|Long integer using one-byte length.
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decoded as bytes object instead.
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the Unpickler constructor. or the default, 'ASCII'. If the
encoding given was 'bytes' however, they will be decoded as bytes
object instead.
ZBINBYTES�B� z�Push a Python bytes object.
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The argument is repr(a_float), and in general requires 17 significant
digits for roundtrip conversion to be an identity (this is so for
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on most boxes).
In general, FLOAT cannot be used to transport infinities, NaNs, or
minus zero across boxes (or even on a single box, if the platform C
library can't read the strings it produces for such things -- Windows
is like that), but may do less damage than BINFLOAT on boxes with
greater precision or dynamic range than IEEE-754 double.
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an IEEE-754 double, and retains no more than 53 bits of precision (if
there are more than that, "add a half and chop" rounding is used to
cut it back to 53 significant bits).
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ZTUPLE3� a Build a three-tuple out of the top three items on the stack.
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The slice of the stack following the topmost markobject is taken as
an alternating sequence of keys and values, added to the dict
immediately under the topmost markobject. Everything at and after the
topmost markobject is popped, leaving the mutated dict at the top
of the stack.
Stack before: ... pydict markobject key_1 value_1 ... key_n value_n
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where pydict has been modified via pydict[key_i] = value_i for i in
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leaving the mutated set at the top of the stack.
Stack before: ... pyset markobject item_1 ... item_n
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where pyset has been modified via pyset.add(item_i) = item_i for i in
1, 2, ..., n, and in that order.
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to work on. See markobject.doc for more detail.
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that delimited their starting position on the stack.
�GET�gz�Read an object from the memo and push it on the stack.
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decimal string following. BINGET and LONG_BINGET are space-optimized
versions.
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The index of the memo object to push is given by the 1-byte unsigned
integer following.
� LONG_BINGET�jz�Read an object from the memo and push it on the stack.
The index of the memo object to push is given by the 4-byte unsigned
little-endian integer following.
�PUT�pz�Store the stack top into the memo. The stack is not popped.
The index of the memo location to write into is given by the newline-
terminated decimal string following. BINPUT and LONG_BINPUT are
space-optimized versions.
�BINPUTr< z�Store the stack top into the memo. The stack is not popped.
The index of the memo location to write into is given by the 1-byte
unsigned integer following.
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The index of the memo location to write into is given by the 4-byte
unsigned little-endian integer following.
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The index of the memo location to write is the number of
elements currently present in the memo.
ZEXT1� a� Extension code.
This code and the similar EXT2 and EXT4 allow using a registry
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It is envisioned that through a global negotiation and
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ints and object names.
In order to guarantee pickle interchangeability, the extension
code registry ought to be global, although a range of codes may
be reserved for private use.
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extension registry, and the object at that index is pushed on the stack.
ZEXT2� zNExtension code.
See EXT1. EXT2 has a two-byte integer argument.
ZEXT4� zOExtension code.
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taken as a module name, and the second as a class name. The class
object module.class is pushed on the stack. More accurately, the
object returned by self.find_class(module, class) is pushed on the
stack, so unpickling subclasses can override this form of lookup.
Z STACK_GLOBAL� z7Push a global object (module.attr) on the stack.
ZREDUCE�RaL Push an object built from a callable and an argument tuple.
The opcode is named to remind of the __reduce__() method.
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The callable and the argument tuple are the first two items returned
by a __reduce__ method. Applying the callable to the argtuple is
supposed to reproduce the original object, or at least get it started.
If the __reduce__ method returns a 3-tuple, the last component is an
argument to be passed to the object's __setstate__, and then the REDUCE
opcode is followed by code to create setstate's argument, and then a
BUILD opcode to apply __setstate__ to that argument.
If not isinstance(callable, type), REDUCE complains unless the
callable has been registered with the copyreg module's
safe_constructors dict, or the callable has a magic
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In addition, all the objects on the stack following the topmost
markobject are gathered into a tuple and popped (along with the
topmost markobject), just as for the TUPLE opcode.
Now it gets complicated. If all of these are true:
+ The argtuple is empty (markobject was at the top of the stack
at the start).
+ The class object does not have a __getinitargs__ attribute.
then we want to create an old-style class instance without invoking
its __init__() method (pickle has waffled on this over the years; not
calling __init__() is current wisdom). In this case, an instance of
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attribute. Unlike as for the __safe_for_unpickling__ check in REDUCE,
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can be much more efficient (in both time and space) than repeatedly
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Unlike INST, OBJ takes no arguments from the opcode stream. Instead
the class object is taken off the stack, immediately above the
topmost markobject:
Stack before: ... markobject classobject stackslice
Stack after: ... new_instance_object
As for INST, the remainder of the stack above the markobject is
gathered into an argument tuple, and then the logic seems identical,
except that no __safe_for_unpickling__ check is done (XXX this is
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each opcode:
opcode, arg, pos
opcode is an OpcodeInfo record, describing the current opcode.
If the opcode has an argument embedded in the pickle, arg is its decoded
value, as a Python object. If the opcode doesn't have an argument, arg
is None.
If the pickle has a tell() method, pos was the value of pickle.tell()
before reading the current opcode. If the pickle is a bytes object,
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d| ��dS ) aK Produce a symbolic disassembly of a pickle.
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pickle. The pickle is disassembled from the current position, through
the first STOP opcode encountered.
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printed. It defaults to sys.stdout.
Optional arg 'memo' is a Python dict, used as the pickle's memo. It
may be mutated by dis(), if the pickle contains PUT or BINPUT opcodes.
Passing the same memo object to another dis() call then allows disassembly
to proceed across multiple pickles that were all created by the same
pickler with the same memo. Ordinarily you don't need to worry about this.
Optional arg 'indentlevel' is the number of blanks by which to indent
a new MARK level. It defaults to 4.
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description of the opcode on each line of disassembled output.
The value given to 'annotate' must be an integer and is used as a
hint for the column where annotation should start. The default
value is 0, meaning no annotations.
In addition to printing the disassembly, some sanity checks are made:
+ All embedded opcode arguments "make sense".
+ Explicit and implicit pop operations have enough items on the stack.
+ When an opcode implicitly refers to a markobject, a markobject is
actually on the stack.
+ A memo entry isn't referenced before it's defined.
+ The markobject isn't stored in the memo.
+ A memo entry isn't redefined.
Nr � z%5d:)�end�filez %-4s %s%sr r� z (MARK at unknown opcode offset)z (MARK at %d)r zno MARK exists on stack)r� r� r� r� r� z(as %d)zmemo key %r already definedz'stack is empty -- can't store into memoz"can't store markobject in the memo)r� r� r� z&memo key %r has never been stored into�
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>>> import pickle
>>> x = [1, 2, (3, 4), {b'abc': "def"}]
>>> pkl0 = pickle.dumps(x, 0)
>>> dis(pkl0)
0: ( MARK
1: l LIST (MARK at 0)
2: p PUT 0
5: I INT 1
8: a APPEND
9: I INT 2
12: a APPEND
13: ( MARK
14: I INT 3
17: I INT 4
20: t TUPLE (MARK at 13)
21: p PUT 1
24: a APPEND
25: ( MARK
26: d DICT (MARK at 25)
27: p PUT 2
30: c GLOBAL '_codecs encode'
46: p PUT 3
49: ( MARK
50: V UNICODE 'abc'
55: p PUT 4
58: V UNICODE 'latin1'
66: p PUT 5
69: t TUPLE (MARK at 49)
70: p PUT 6
73: R REDUCE
74: p PUT 7
77: V UNICODE 'def'
82: p PUT 8
85: s SETITEM
86: a APPEND
87: . STOP
highest protocol among opcodes = 0
Try again with a "binary" pickle.
>>> pkl1 = pickle.dumps(x, 1)
>>> dis(pkl1)
0: ] EMPTY_LIST
1: q BINPUT 0
3: ( MARK
4: K BININT1 1
6: K BININT1 2
8: ( MARK
9: K BININT1 3
11: K BININT1 4
13: t TUPLE (MARK at 8)
14: q BINPUT 1
16: } EMPTY_DICT
17: q BINPUT 2
19: c GLOBAL '_codecs encode'
35: q BINPUT 3
37: ( MARK
38: X BINUNICODE 'abc'
46: q BINPUT 4
48: X BINUNICODE 'latin1'
59: q BINPUT 5
61: t TUPLE (MARK at 37)
62: q BINPUT 6
64: R REDUCE
65: q BINPUT 7
67: X BINUNICODE 'def'
75: q BINPUT 8
77: s SETITEM
78: e APPENDS (MARK at 3)
79: . STOP
highest protocol among opcodes = 1
Exercise the INST/OBJ/BUILD family.
>>> import pickletools
>>> dis(pickle.dumps(pickletools.dis, 0))
0: c GLOBAL 'pickletools dis'
17: p PUT 0
20: . STOP
highest protocol among opcodes = 0
>>> from pickletools import _Example
>>> x = [_Example(42)] * 2
>>> dis(pickle.dumps(x, 0))
0: ( MARK
1: l LIST (MARK at 0)
2: p PUT 0
5: c GLOBAL 'copy_reg _reconstructor'
30: p PUT 1
33: ( MARK
34: c GLOBAL 'pickletools _Example'
56: p PUT 2
59: c GLOBAL '__builtin__ object'
79: p PUT 3
82: N NONE
83: t TUPLE (MARK at 33)
84: p PUT 4
87: R REDUCE
88: p PUT 5
91: ( MARK
92: d DICT (MARK at 91)
93: p PUT 6
96: V UNICODE 'value'
103: p PUT 7
106: I INT 42
110: s SETITEM
111: b BUILD
112: a APPEND
113: g GET 5
116: a APPEND
117: . STOP
highest protocol among opcodes = 0
>>> dis(pickle.dumps(x, 1))
0: ] EMPTY_LIST
1: q BINPUT 0
3: ( MARK
4: c GLOBAL 'copy_reg _reconstructor'
29: q BINPUT 1
31: ( MARK
32: c GLOBAL 'pickletools _Example'
54: q BINPUT 2
56: c GLOBAL '__builtin__ object'
76: q BINPUT 3
78: N NONE
79: t TUPLE (MARK at 31)
80: q BINPUT 4
82: R REDUCE
83: q BINPUT 5
85: } EMPTY_DICT
86: q BINPUT 6
88: X BINUNICODE 'value'
98: q BINPUT 7
100: K BININT1 42
102: s SETITEM
103: b BUILD
104: h BINGET 5
106: e APPENDS (MARK at 3)
107: . STOP
highest protocol among opcodes = 1
Try "the canonical" recursive-object test.
>>> L = []
>>> T = L,
>>> L.append(T)
>>> L[0] is T
True
>>> T[0] is L
True
>>> L[0][0] is L
True
>>> T[0][0] is T
True
>>> dis(pickle.dumps(L, 0))
0: ( MARK
1: l LIST (MARK at 0)
2: p PUT 0
5: ( MARK
6: g GET 0
9: t TUPLE (MARK at 5)
10: p PUT 1
13: a APPEND
14: . STOP
highest protocol among opcodes = 0
>>> dis(pickle.dumps(L, 1))
0: ] EMPTY_LIST
1: q BINPUT 0
3: ( MARK
4: h BINGET 0
6: t TUPLE (MARK at 3)
7: q BINPUT 1
9: a APPEND
10: . STOP
highest protocol among opcodes = 1
Note that, in the protocol 0 pickle of the recursive tuple, the disassembler
has to emulate the stack in order to realize that the POP opcode at 16 gets
rid of the MARK at 0.
>>> dis(pickle.dumps(T, 0))
0: ( MARK
1: ( MARK
2: l LIST (MARK at 1)
3: p PUT 0
6: ( MARK
7: g GET 0
10: t TUPLE (MARK at 6)
11: p PUT 1
14: a APPEND
15: 0 POP
16: 0 POP (MARK at 0)
17: g GET 1
20: . STOP
highest protocol among opcodes = 0
>>> dis(pickle.dumps(T, 1))
0: ( MARK
1: ] EMPTY_LIST
2: q BINPUT 0
4: ( MARK
5: h BINGET 0
7: t TUPLE (MARK at 4)
8: q BINPUT 1
10: a APPEND
11: 1 POP_MARK (MARK at 0)
12: h BINGET 1
14: . STOP
highest protocol among opcodes = 1
Try protocol 2.
>>> dis(pickle.dumps(L, 2))
0: \x80 PROTO 2
2: ] EMPTY_LIST
3: q BINPUT 0
5: h BINGET 0
7: \x85 TUPLE1
8: q BINPUT 1
10: a APPEND
11: . STOP
highest protocol among opcodes = 2
>>> dis(pickle.dumps(T, 2))
0: \x80 PROTO 2
2: ] EMPTY_LIST
3: q BINPUT 0
5: h BINGET 0
7: \x85 TUPLE1
8: q BINPUT 1
10: a APPEND
11: 0 POP
12: h BINGET 1
14: . STOP
highest protocol among opcodes = 2
Try protocol 3 with annotations:
>>> dis(pickle.dumps(T, 3), annotate=1)
0: \x80 PROTO 3 Protocol version indicator.
2: ] EMPTY_LIST Push an empty list.
3: q BINPUT 0 Store the stack top into the memo. The stack is not popped.
5: h BINGET 0 Read an object from the memo and push it on the stack.
7: \x85 TUPLE1 Build a one-tuple out of the topmost item on the stack.
8: q BINPUT 1 Store the stack top into the memo. The stack is not popped.
10: a APPEND Append an object to a list.
11: 0 POP Discard the top stack item, shrinking the stack by one item.
12: h BINGET 1 Read an object from the memo and push it on the stack.
14: . STOP Stop the unpickling machine.
highest protocol among opcodes = 2
a=
>>> import pickle
>>> import io
>>> f = io.BytesIO()
>>> p = pickle.Pickler(f, 2)
>>> x = [1, 2, 3]
>>> p.dump(x)
>>> p.dump(x)
>>> f.seek(0)
0
>>> memo = {}
>>> dis(f, memo=memo)
0: \x80 PROTO 2
2: ] EMPTY_LIST
3: q BINPUT 0
5: ( MARK
6: K BININT1 1
8: K BININT1 2
10: K BININT1 3
12: e APPENDS (MARK at 5)
13: . STOP
highest protocol among opcodes = 2
>>> dis(f, memo=memo)
14: \x80 PROTO 2
16: h BINGET 0
18: . STOP
highest protocol among opcodes = 2
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'a' or 'a:' open for appending, creating the file if necessary
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'r|xz' open an lzma compressed stream of tar blocks
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Module difflib -- helpers for computing deltas between objects.
Function get_close_matches(word, possibilities, n=3, cutoff=0.6):
Use SequenceMatcher to return list of the best "good enough" matches.
Function context_diff(a, b):
For two lists of strings, return a delta in context diff format.
Function ndiff(a, b):
Return a delta: the difference between `a` and `b` (lists of strings).
Function restore(delta, which):
Return one of the two sequences that generated an ndiff delta.
Function unified_diff(a, b):
For two lists of strings, return a delta in unified diff format.
Class SequenceMatcher:
A flexible class for comparing pairs of sequences of any type.
Class Differ:
For producing human-readable deltas from sequences of lines of text.
Class HtmlDiff:
For producing HTML side by side comparison with change highlights.
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SequenceMatcher is a flexible class for comparing pairs of sequences of
any type, so long as the sequence elements are hashable. The basic
algorithm predates, and is a little fancier than, an algorithm
published in the late 1980's by Ratcliff and Obershelp under the
hyperbolic name "gestalt pattern matching". The basic idea is to find
the longest contiguous matching subsequence that contains no "junk"
elements (R-O doesn't address junk). The same idea is then applied
recursively to the pieces of the sequences to the left and to the right
of the matching subsequence. This does not yield minimal edit
sequences, but does tend to yield matches that "look right" to people.
SequenceMatcher tries to compute a "human-friendly diff" between two
sequences. Unlike e.g. UNIX(tm) diff, the fundamental notion is the
longest *contiguous* & junk-free matching subsequence. That's what
catches peoples' eyes. The Windows(tm) windiff has another interesting
notion, pairing up elements that appear uniquely in each sequence.
That, and the method here, appear to yield more intuitive difference
reports than does diff. This method appears to be the least vulnerable
to synching up on blocks of "junk lines", though (like blank lines in
ordinary text files, or maybe "<P>" lines in HTML files). That may be
because this is the only method of the 3 that has a *concept* of
"junk" <wink>.
Example, comparing two strings, and considering blanks to be "junk":
>>> s = SequenceMatcher(lambda x: x == " ",
... "private Thread currentThread;",
... "private volatile Thread currentThread;")
>>>
.ratio() returns a float in [0, 1], measuring the "similarity" of the
sequences. As a rule of thumb, a .ratio() value over 0.6 means the
sequences are close matches:
>>> print(round(s.ratio(), 3))
0.866
>>>
If you're only interested in where the sequences match,
.get_matching_blocks() is handy:
>>> for block in s.get_matching_blocks():
... print("a[%d] and b[%d] match for %d elements" % block)
a[0] and b[0] match for 8 elements
a[8] and b[17] match for 21 elements
a[29] and b[38] match for 0 elements
Note that the last tuple returned by .get_matching_blocks() is always a
dummy, (len(a), len(b), 0), and this is the only case in which the last
tuple element (number of elements matched) is 0.
If you want to know how to change the first sequence into the second,
use .get_opcodes():
>>> for opcode in s.get_opcodes():
... print("%6s a[%d:%d] b[%d:%d]" % opcode)
equal a[0:8] b[0:8]
insert a[8:8] b[8:17]
equal a[8:29] b[17:38]
See the Differ class for a fancy human-friendly file differencer, which
uses SequenceMatcher both to compare sequences of lines, and to compare
sequences of characters within similar (near-matching) lines.
See also function get_close_matches() in this module, which shows how
simple code building on SequenceMatcher can be used to do useful work.
Timing: Basic R-O is cubic time worst case and quadratic time expected
case. SequenceMatcher is quadratic time for the worst case and has
expected-case behavior dependent in a complicated way on how many
elements the sequences have in common; best case time is linear.
Methods:
__init__(isjunk=None, a='', b='')
Construct a SequenceMatcher.
set_seqs(a, b)
Set the two sequences to be compared.
set_seq1(a)
Set the first sequence to be compared.
set_seq2(b)
Set the second sequence to be compared.
find_longest_match(alo, ahi, blo, bhi)
Find longest matching block in a[alo:ahi] and b[blo:bhi].
get_matching_blocks()
Return list of triples describing matching subsequences.
get_opcodes()
Return list of 5-tuples describing how to turn a into b.
ratio()
Return a measure of the sequences' similarity (float in [0,1]).
quick_ratio()
Return an upper bound on .ratio() relatively quickly.
real_quick_ratio()
Return an upper bound on ratio() very quickly.
N� Tc C s( || _ d | _| _|| _| �||� dS )a! Construct a SequenceMatcher.
Optional arg isjunk is None (the default), or a one-argument
function that takes a sequence element and returns true iff the
element is junk. None is equivalent to passing "lambda x: 0", i.e.
no elements are considered to be junk. For example, pass
lambda x: x in " \t"
if you're comparing lines as sequences of characters, and don't
want to synch up on blanks or hard tabs.
Optional arg a is the first of two sequences to be compared. By
default, an empty string. The elements of a must be hashable. See
also .set_seqs() and .set_seq1().
Optional arg b is the second of two sequences to be compared. By
default, an empty string. The elements of b must be hashable. See
also .set_seqs() and .set_seq2().
Optional arg autojunk should be set to False to disable the
"automatic junk heuristic" that treats popular elements as junk
(see module documentation for more information).
N)�isjunk�a�b�autojunk�set_seqs)�selfr r r r r r r �__init__� s ; zSequenceMatcher.__init__c C s | � |� | �|� dS )z�Set the two sequences to be compared.
>>> s = SequenceMatcher()
>>> s.set_seqs("abcd", "bcde")
>>> s.ratio()
0.75
N)�set_seq1�set_seq2)r r r r r r r � s
zSequenceMatcher.set_seqsc C s$ || j krdS || _ d | _| _dS )aM Set the first sequence to be compared.
The second sequence to be compared is not changed.
>>> s = SequenceMatcher(None, "abcd", "bcde")
>>> s.ratio()
0.75
>>> s.set_seq1("bcde")
>>> s.ratio()
1.0
>>>
SequenceMatcher computes and caches detailed information about the
second sequence, so if you want to compare one sequence S against
many sequences, use .set_seq2(S) once and call .set_seq1(x)
repeatedly for each of the other sequences.
See also set_seqs() and set_seq2().
N)r �matching_blocks�opcodes)r r r r r r � s
zSequenceMatcher.set_seq1c C s2 || j krdS || _ d | _| _d| _| �� dS )aM Set the second sequence to be compared.
The first sequence to be compared is not changed.
>>> s = SequenceMatcher(None, "abcd", "bcde")
>>> s.ratio()
0.75
>>> s.set_seq2("abcd")
>>> s.ratio()
1.0
>>>
SequenceMatcher computes and caches detailed information about the
second sequence, so if you want to compare one sequence S against
many sequences, use .set_seq2(S) once and call .set_seq1(x)
repeatedly for each of the other sequences.
See also set_seqs() and set_seq1().
N)r r r! �
fullbcount�_SequenceMatcher__chain_b)r r r r r r � s
zSequenceMatcher.set_seq2c C s� | j }i | _}t|�D ] \}}|�|g �}|�|� qt� | _}| j}|r~|�� D ]}||�rV|� |� qV|D ]
}||= qrt� | _
}t |�} | j r�| dkr�| d d }
|�
� D ] \}} t | �|
kr�|� |� q�|D ]
}||= q�d S )N�� �d � )r �b2j� enumerate�
setdefault�append�set�bjunkr �keys�addZbpopular�lenr �items) r r r' �i�elt�indicesZjunkr Zpopular�nZntestZidxsr r r Z __chain_b) s,
zSequenceMatcher.__chain_bc C s4 | j | j| j| jjf\}}}}||d } }
} i } g }
t||�D ]�}| j}i }|�|| |
�D ]\}||k rlq^||krx q�||d d�d }||< || kr^|| d || d | } }
} q^|} q@| |k�r |
|k�r |||
d ��s || d ||
d k�r | d |
d | d } }
} q�| | |k �rt|
| |k �rt|||
| ��st|| | ||
| k�rt| d7 } �q | |k�r�|
|k�r�|||
d ��r�|| d ||
d k�r�| d |
d | d } }
} �qt| | |k �r(|
| |k �r(|||
| ��r(|| | ||
| k�r(| d } �q�t| |
| �S )a� Find longest matching block in a[alo:ahi] and b[blo:bhi].
If isjunk is not defined:
Return (i,j,k) such that a[i:i+k] is equal to b[j:j+k], where
alo <= i <= i+k <= ahi
blo <= j <= j+k <= bhi
and for all (i',j',k') meeting those conditions,
k >= k'
i <= i'
and if i == i', j <= j'
In other words, of all maximal matching blocks, return one that
starts earliest in a, and of all those maximal matching blocks that
start earliest in a, return the one that starts earliest in b.
>>> s = SequenceMatcher(None, " abcd", "abcd abcd")
>>> s.find_longest_match(0, 5, 0, 9)
Match(a=0, b=4, size=5)
If isjunk is defined, first the longest matching block is
determined as above, but with the additional restriction that no
junk element appears in the block. Then that block is extended as
far as possible by matching (only) junk elements on both sides. So
the resulting block never matches on junk except as identical junk
happens to be adjacent to an "interesting" match.
Here's the same example as before, but considering blanks to be
junk. That prevents " abcd" from matching the " abcd" at the tail
end of the second sequence directly. Instead only the "abcd" can
match, and matches the leftmost "abcd" in the second sequence:
>>> s = SequenceMatcher(lambda x: x==" ", " abcd", "abcd abcd")
>>> s.find_longest_match(0, 5, 0, 9)
Match(a=1, b=0, size=4)
If no blocks match, return (alo, blo, 0).
>>> s = SequenceMatcher(None, "ab", "c")
>>> s.find_longest_match(0, 2, 0, 1)
Match(a=0, b=0, size=0)
r
r& )r r r' r, � __contains__�range�getr )r �alo�ahi�blo�bhir r r' ZisbjunkZbestiZbestjZbestsizeZj2lenZnothingr1 Zj2lengetZnewj2len�j�kr r r �find_longest_matchP sR 8 "�� �� �� �� z"SequenceMatcher.find_longest_matchc C s| | j dk r| j S t| j�t| j� }}d|d|fg}g }|r�|�� \}}}}| �||||� \} }
} } | r8|�| � || k r�||
k r�|�|| ||
f� | | |k r8|
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| |f� q8|�� d }
}}g }|D ]V\}}}|
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||f� ||| }
}}q�|�rT|�|
||f� |�||df� tt t
j |��| _ | j S )a Return list of triples describing matching subsequences.
Each triple is of the form (i, j, n), and means that
a[i:i+n] == b[j:j+n]. The triples are monotonically increasing in
i and in j. New in Python 2.5, it's also guaranteed that if
(i, j, n) and (i', j', n') are adjacent triples in the list, and
the second is not the last triple in the list, then i+n != i' or
j+n != j'. IOW, adjacent triples never describe adjacent equal
blocks.
The last triple is a dummy, (len(a), len(b), 0), and is the only
triple with n==0.
>>> s = SequenceMatcher(None, "abxcd", "abcd")
>>> list(s.get_matching_blocks())
[Match(a=0, b=0, size=2), Match(a=3, b=2, size=2), Match(a=5, b=4, size=0)]
Nr
) r r/ r r �popr> r* �sort�list�mapr �_make)r �la�lbZqueuer r8 r9 r: r; r1 r< r= �x�i1�j1Zk1Z non_adjacent�i2�j2Zk2r r r �get_matching_blocks� s8
z#SequenceMatcher.get_matching_blocksc C s� | j dk r| j S d }}g | _ }| �� D ]�\}}}d}||k rN||k rNd}n||k r\d}n ||k rhd}|r�|�|||||f� || || }}|r*|�d||||f� q*|S )a[ Return list of 5-tuples describing how to turn a into b.
Each tuple is of the form (tag, i1, i2, j1, j2). The first tuple
has i1 == j1 == 0, and remaining tuples have i1 == the i2 from the
tuple preceding it, and likewise for j1 == the previous j2.
The tags are strings, with these meanings:
'replace': a[i1:i2] should be replaced by b[j1:j2]
'delete': a[i1:i2] should be deleted.
Note that j1==j2 in this case.
'insert': b[j1:j2] should be inserted at a[i1:i1].
Note that i1==i2 in this case.
'equal': a[i1:i2] == b[j1:j2]
>>> a = "qabxcd"
>>> b = "abycdf"
>>> s = SequenceMatcher(None, a, b)
>>> for tag, i1, i2, j1, j2 in s.get_opcodes():
... print(("%7s a[%d:%d] (%s) b[%d:%d] (%s)" %
... (tag, i1, i2, a[i1:i2], j1, j2, b[j1:j2])))
delete a[0:1] (q) b[0:0] ()
equal a[1:3] (ab) b[0:2] (ab)
replace a[3:4] (x) b[2:3] (y)
equal a[4:6] (cd) b[3:5] (cd)
insert a[6:6] () b[5:6] (f)
Nr
r �replace�delete�insert�equal)r! rK r* )r r1 r< Zanswer�ai�bj�size�tagr r r � get_opcodes s$
zSequenceMatcher.get_opcodes� c
c sn | � � }|sdg}|d d dkrZ|d \}}}}}|t||| �|t||| �|f|d< |d d dkr�|d \}}}}}||t||| �|t||| �f|d< || }g } |D ]�\}}}}}|dk�r(|| |k�r(| �||t||| �|t||| �f� | V g } t||| �t||| � }}| �|||||f� q�| �rjt| �dk�rd| d d dk�sj| V dS )a� Isolate change clusters by eliminating ranges with no changes.
Return a generator of groups with up to n lines of context.
Each group is in the same format as returned by get_opcodes().
>>> from pprint import pprint
>>> a = list(map(str, range(1,40)))
>>> b = a[:]
>>> b[8:8] = ['i'] # Make an insertion
>>> b[20] += 'x' # Make a replacement
>>> b[23:28] = [] # Make a deletion
>>> b[30] += 'y' # Make another replacement
>>> pprint(list(SequenceMatcher(None,a,b).get_grouped_opcodes()))
[[('equal', 5, 8, 5, 8), ('insert', 8, 8, 8, 9), ('equal', 8, 11, 9, 12)],
[('equal', 16, 19, 17, 20),
('replace', 19, 20, 20, 21),
('equal', 20, 22, 21, 23),
('delete', 22, 27, 23, 23),
('equal', 27, 30, 23, 26)],
[('equal', 31, 34, 27, 30),
('replace', 34, 35, 30, 31),
('equal', 35, 38, 31, 34)]]
)rO r
r& r
r& r
rO ���r& N)rT �max�minr* r/ )
r r4 ZcodesrS rG rI rH rJ Znn�groupr r r �get_grouped_opcodes< s( &&( &z#SequenceMatcher.get_grouped_opcodesc C s0 t dd� | �� D ��}t|t| j�t| j� �S )a� Return a measure of the sequences' similarity (float in [0,1]).
Where T is the total number of elements in both sequences, and
M is the number of matches, this is 2.0*M / T.
Note that this is 1 if the sequences are identical, and 0 if
they have nothing in common.
.ratio() is expensive to compute if you haven't already computed
.get_matching_blocks() or .get_opcodes(), in which case you may
want to try .quick_ratio() or .real_quick_ratio() first to get an
upper bound.
>>> s = SequenceMatcher(None, "abcd", "bcde")
>>> s.ratio()
0.75
>>> s.quick_ratio()
0.75
>>> s.real_quick_ratio()
1.0
c s s | ]}|d V qdS )rV Nr )�.0Ztripler r r � <genexpr>� s z(SequenceMatcher.ratio.<locals>.<genexpr>)�sumrK r r/ r r )r r r r r �ration s zSequenceMatcher.ratioc C s� | j dkr4i | _ }| jD ]}|�|d�d ||< q| j }i }|jd }}| jD ]>}||�rf|| }n |�|d�}|d ||< |dkrP|d }qPt|t| j�t| j� �S )z�Return an upper bound on ratio() relatively quickly.
This isn't defined beyond that it is an upper bound on .ratio(), and
is faster to compute.
Nr
r& )r" r r7 r5 r r r/ )r r" r2 ZavailZavailhasr Znumbr r r � quick_ratio� s
zSequenceMatcher.quick_ratioc C s* t | j�t | j� }}tt||�|| �S )z�Return an upper bound on ratio() very quickly.
This isn't defined beyond that it is an upper bound on .ratio(), and
is faster to compute than either .ratio() or .quick_ratio().
)r/ r r r rX )r rD rE r r r �real_quick_ratio� s z SequenceMatcher.real_quick_ratio)Nr r T)rU )�__name__�
__module__� __qualname__�__doc__r r r r r# r> rK rT rZ r^ r_ r` r r r r r + s j
@ ,'nG7
2 rU �333333�?c C s� |dkst d|f ��d| kr*dks:n t d|f ��g }t� }|�| � |D ]D}|�|� |�� |krR|�� |krR|�� |krR|�|�� |f� qRt||�}dd� |D �S )a� Use SequenceMatcher to return list of the best "good enough" matches.
word is a sequence for which close matches are desired (typically a
string).
possibilities is a list of sequences against which to match word
(typically a list of strings).
Optional arg n (default 3) is the maximum number of close matches to
return. n must be > 0.
Optional arg cutoff (default 0.6) is a float in [0, 1]. Possibilities
that don't score at least that similar to word are ignored.
The best (no more than n) matches among the possibilities are returned
in a list, sorted by similarity score, most similar first.
>>> get_close_matches("appel", ["ape", "apple", "peach", "puppy"])
['apple', 'ape']
>>> import keyword as _keyword
>>> get_close_matches("wheel", _keyword.kwlist)
['while']
>>> get_close_matches("Apple", _keyword.kwlist)
[]
>>> get_close_matches("accept", _keyword.kwlist)
['except']
r
zn must be > 0: %rg r z cutoff must be in [0.0, 1.0]: %rc S s g | ] \}}|�qS r r )r[ ZscorerF r r r �
<listcomp>� s z%get_close_matches.<locals>.<listcomp>) �
ValueErrorr r r r` r_ r^ r* � _nlargest)ZwordZ
possibilitiesr4 �cutoff�result�srF r r r r � s"
�
�
c C s d� dd� t| |�D ��S )zAReplace whitespace with the original whitespace characters in `s`r c s s* | ]"\}}|d kr |� � r |n|V qdS )� N)�isspace)r[ �cZtag_cr r r r\ � s �z$_keep_original_ws.<locals>.<genexpr>)�join�zip)rk Ztag_sr r r �_keep_original_ws� s
�rq c @ sJ e Zd ZdZddd�Zdd� Zdd� Zd d
� Zd d � Zd
d� Z dd� Z
dS )r a�
Differ is a class for comparing sequences of lines of text, and
producing human-readable differences or deltas. Differ uses
SequenceMatcher both to compare sequences of lines, and to compare
sequences of characters within similar (near-matching) lines.
Each line of a Differ delta begins with a two-letter code:
'- ' line unique to sequence 1
'+ ' line unique to sequence 2
' ' line common to both sequences
'? ' line not present in either input sequence
Lines beginning with '? ' attempt to guide the eye to intraline
differences, and were not present in either input sequence. These lines
can be confusing if the sequences contain tab characters.
Note that Differ makes no claim to produce a *minimal* diff. To the
contrary, minimal diffs are often counter-intuitive, because they synch
up anywhere possible, sometimes accidental matches 100 pages apart.
Restricting synch points to contiguous matches preserves some notion of
locality, at the occasional cost of producing a longer diff.
Example: Comparing two texts.
First we set up the texts, sequences of individual single-line strings
ending with newlines (such sequences can also be obtained from the
`readlines()` method of file-like objects):
>>> text1 = ''' 1. Beautiful is better than ugly.
... 2. Explicit is better than implicit.
... 3. Simple is better than complex.
... 4. Complex is better than complicated.
... '''.splitlines(keepends=True)
>>> len(text1)
4
>>> text1[0][-1]
'\n'
>>> text2 = ''' 1. Beautiful is better than ugly.
... 3. Simple is better than complex.
... 4. Complicated is better than complex.
... 5. Flat is better than nested.
... '''.splitlines(keepends=True)
Next we instantiate a Differ object:
>>> d = Differ()
Note that when instantiating a Differ object we may pass functions to
filter out line and character 'junk'. See Differ.__init__ for details.
Finally, we compare the two:
>>> result = list(d.compare(text1, text2))
'result' is a list of strings, so let's pretty-print it:
>>> from pprint import pprint as _pprint
>>> _pprint(result)
[' 1. Beautiful is better than ugly.\n',
'- 2. Explicit is better than implicit.\n',
'- 3. Simple is better than complex.\n',
'+ 3. Simple is better than complex.\n',
'? ++\n',
'- 4. Complex is better than complicated.\n',
'? ^ ---- ^\n',
'+ 4. Complicated is better than complex.\n',
'? ++++ ^ ^\n',
'+ 5. Flat is better than nested.\n']
As a single multi-line string it looks like this:
>>> print(''.join(result), end="")
1. Beautiful is better than ugly.
- 2. Explicit is better than implicit.
- 3. Simple is better than complex.
+ 3. Simple is better than complex.
? ++
- 4. Complex is better than complicated.
? ^ ---- ^
+ 4. Complicated is better than complex.
? ++++ ^ ^
+ 5. Flat is better than nested.
Methods:
__init__(linejunk=None, charjunk=None)
Construct a text differencer, with optional filters.
compare(a, b)
Compare two sequences of lines; generate the resulting delta.
Nc C s || _ || _dS )a�
Construct a text differencer, with optional filters.
The two optional keyword parameters are for filter functions:
- `linejunk`: A function that should accept a single string argument,
and return true iff the string is junk. The module-level function
`IS_LINE_JUNK` may be used to filter out lines without visible
characters, except for at most one splat ('#'). It is recommended
to leave linejunk None; the underlying SequenceMatcher class has
an adaptive notion of "noise" lines that's better than any static
definition the author has ever been able to craft.
- `charjunk`: A function that should accept a string of length 1. The
module-level function `IS_CHARACTER_JUNK` may be used to filter out
whitespace characters (a blank or tab; **note**: bad idea to include
newline in this!). Use of IS_CHARACTER_JUNK is recommended.
N��linejunk�charjunk)r rs rt r r r r H s zDiffer.__init__c
c s� t | j||�}|�� D ]�\}}}}}|dkrB| �||||||�} n\|dkr\| �d|||�} nB|dkrv| �d|||�} n(|dkr�| �d|||�} ntd|f ��| E d H qd S )
a�
Compare two sequences of lines; generate the resulting delta.
Each sequence must contain individual single-line strings ending with
newlines. Such sequences can be obtained from the `readlines()` method
of file-like objects. The delta generated also consists of newline-
terminated strings, ready to be printed as-is via the writeline()
method of a file-like object.
Example:
>>> print(''.join(Differ().compare('one\ntwo\nthree\n'.splitlines(True),
... 'ore\ntree\nemu\n'.splitlines(True))),
... end="")
- one
? ^
+ ore
? ^
- two
- three
? -
+ tree
+ emu
rL rM �-rN �+rO rl �unknown tag %rN)r rs rT �_fancy_replace�_dumprg )
r r r �cruncherrS r8 r9 r: r; �gr r r �compare_ s zDiffer.comparec c s& t ||�D ]}d||| f V q
dS )z4Generate comparison results for a same-tagged range.z%s %sN)r6 )r rS rF �lo�hir1 r r r ry � s z Differ._dumpc
c sn || || k r2| � d|||�}| � d|||�}n | � d|||�}| � d|||�}||fD ]} | E d H qZd S )Nrv ru )ry )
r r r8 r9 r r: r; �first�secondr{ r r r �_plain_replace� s zDiffer._plain_replacec c s: d\}}t | j�} d\}
} t||�D ]�} || }
| �|
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} qD| �|� | �� |krD| �� |krD| �� |krD| �� || }}}qDq$||k r�|
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||� | � � D ]�\}}}}}|| || }} |dk�r�|d| 7 }|d| 7 }nb|dk�r�|d | 7 }nJ|d
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When replacing one block of lines with another, search the blocks
for *similar* lines; the best-matching pair (if any) is used as a
synch point, and intraline difference marking is done on the
similar pair. Lots of work, but often worth it.
Example:
>>> d = Differ()
>>> results = d._fancy_replace(['abcDefghiJkl\n'], 0, 1,
... ['abcdefGhijkl\n'], 0, 1)
>>> print(''.join(results), end="")
- abcDefghiJkl
? ^ ^ ^
+ abcdefGhijkl
? ^ ^ ^
)g�G�z��?g �?)NNNr r rL �^rM ru rN rv rO rl rw � r& )r rt r6 r r r` r_ r^ r� �
_fancy_helperr rT rg �_qformat) r r r8 r9 r r: r; Z
best_ratiori rz ZeqiZeqjr< rQ r1 rP Zbest_iZbest_jZaeltZbelt�atags�btagsrS Zai1Zai2Zbj1Zbj2rD rE r r r rx � s\
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zDiffer._fancy_replacec c sb g }||k r<||k r*| � ||||||�}qT| �d|||�}n||k rT| �d|||�}|E d H d S )Nru rv )rx ry )r r r8 r9 r r: r; r{ r r r r� � s zDiffer._fancy_helperc c sX t ||��� }t ||��� }d| V |r8d|� d�V d| V |rTd|� d�V dS )a�
Format "?" output and deal with tabs.
Example:
>>> d = Differ()
>>> results = d._qformat('\tabcDefghiJkl\n', '\tabcdefGhijkl\n',
... ' ^ ^ ^ ', ' ^ ^ ^ ')
>>> for line in results: print(repr(line))
...
'- \tabcDefghiJkl\n'
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'? \t ^ ^ ^\n'
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Return True for ignorable line: iff `line` is blank or contains a single '#'.
Examples:
>>> IS_LINE_JUNK('\n')
True
>>> IS_LINE_JUNK(' # \n')
True
>>> IS_LINE_JUNK('hello\n')
False
Nr )�lineZpatr r r r 3 s � c C s | |kS )z�
Return True for ignorable character: iff `ch` is a space or tab.
Examples:
>>> IS_CHARACTER_JUNK(' ')
True
>>> IS_CHARACTER_JUNK('\t')
True
>>> IS_CHARACTER_JUNK('\n')
False
>>> IS_CHARACTER_JUNK('x')
False
r )ZchZwsr r r r C s c C s: | d }|| }|dkr"d� |�S |s.|d8 }d� ||�S �z Convert range to the "ed" formatr& z{}z{},{}��format��start�stopZ beginningr r r r �_format_range_unifiedZ s
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Compare two sequences of lines; generate the delta as a unified diff.
Unified diffs are a compact way of showing line changes and a few
lines of context. The number of context lines is set by 'n' which
defaults to three.
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created with a trailing newline. This is helpful so that inputs
created from file.readlines() result in diffs that are suitable for
file.writelines() since both the inputs and outputs have trailing
newlines.
For inputs that do not have trailing newlines, set the lineterm
argument to "" so that the output will be uniformly newline free.
The unidiff format normally has a header for filenames and modification
times. Any or all of these may be specified using strings for
'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
The modification times are normally expressed in the ISO 8601 format.
Example:
>>> for line in unified_diff('one two three four'.split(),
... 'zero one tree four'.split(), 'Original', 'Current',
... '2005-01-26 23:30:50', '2010-04-02 10:20:52',
... lineterm=''):
... print(line) # doctest: +NORMALIZE_WHITESPACE
--- Original 2005-01-26 23:30:50
+++ Current 2010-04-02 10:20:52
@@ -1,4 +1,4 @@
+zero
one
-two
-three
+tree
four
FNT� {}r �
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Compare two sequences of lines; generate the delta as a context diff.
Context diffs are a compact way of showing line changes and a few
lines of context. The number of context lines is set by 'n' which
defaults to three.
By default, the diff control lines (those with *** or ---) are
created with a trailing newline. This is helpful so that inputs
created from file.readlines() result in diffs that are suitable for
file.writelines() since both the inputs and outputs have trailing
newlines.
For inputs that do not have trailing newlines, set the lineterm
argument to "" so that the output will be uniformly newline free.
The context diff format normally has a header for filenames and
modification times. Any or all of these may be specified using
strings for 'fromfile', 'tofile', 'fromfiledate', and 'tofiledate'.
The modification times are normally expressed in the ISO 8601 format.
If not specified, the strings default to blanks.
Example:
>>> print(''.join(context_diff('one\ntwo\nthree\nfour\n'.splitlines(True),
... 'zero\none\ntree\nfour\n'.splitlines(True), 'Original', 'Current')),
... end="")
*** Original
--- Current
***************
*** 1,4 ****
one
! two
! three
four
--- 1,4 ----
+ zero
one
! tree
four
r� r� z! r� )rN rM rL rO FNTr� r z
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c G s� | r0t | d t�s0tdt| d �j| d f ��|r`t |d t�s`tdt|d �j|d f ��|D ] }t |t�sdtd|f ��qdd S )Nr
z)lines to compare must be str, not %s (%r)z"all arguments must be str, not: %r)�
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Compare `a` and `b`, two sequences of lines represented as bytes rather
than str. This is a wrapper for `dfunc`, which is typically either
unified_diff() or context_diff(). Inputs are losslessly converted to
strings so that `dfunc` only has to worry about strings, and encoded
back to bytes on return. This is necessary to compare files with
unknown or inconsistent encoding. All other inputs (except `n`) must be
bytes rather than str.
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rL } z dt| �j| f }t|�|�W 5 d }~X Y nX d S )N�ascii�surrogateescapez(all arguments must be bytes, not %s (%r))�decode�AttributeErrorr� ra r� )rk �err�msgr r r r� " s �zdiff_bytes.<locals>.decoder� r� N)rA rB �encode) Zdfuncr r r� r� r� r� r4 r� r� �linesr� r r r r
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Compare `a` and `b` (lists of strings); return a `Differ`-style delta.
Optional keyword parameters `linejunk` and `charjunk` are for filter
functions, or can be None:
- linejunk: A function that should accept a single string argument and
return true iff the string is junk. The default is None, and is
recommended; the underlying SequenceMatcher class has an adaptive
notion of "noise" lines.
- charjunk: A function that accepts a character (string of length
1), and returns true iff the character is junk. The default is
the module-level function IS_CHARACTER_JUNK, which filters out
whitespace characters (a blank or tab; note: it's a bad idea to
include newline in this!).
Tools/scripts/ndiff.py is a command-line front-end to this function.
Example:
>>> diff = ndiff('one\ntwo\nthree\n'.splitlines(keepends=True),
... 'ore\ntree\nemu\n'.splitlines(keepends=True))
>>> print(''.join(diff), end="")
- one
? ^
+ ore
? ^
- two
- three
? -
+ tree
+ emu
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tolines -- list of text lines to be compared to fromlines
context -- number of context lines to display on each side of difference,
if None, all from/to text lines will be generated.
linejunk -- passed on to ndiff (see ndiff documentation)
charjunk -- passed on to ndiff (see ndiff documentation)
This function returns an iterator which returns a tuple:
(from line tuple, to line tuple, boolean flag)
from/to line tuple -- (line num, line text)
line num -- integer or None (to indicate a context separation)
line text -- original line text with following markers inserted:
'\0+' -- marks start of added text
'\0-' -- marks start of deleted text
'\0^' -- marks start of changed text
'\1' -- marks end of added/deleted/changed text
boolean flag -- None indicates context separation, True indicates
either "from" or "to" line contains a change, otherwise False.
This function/iterator was originally developed to generate side by side
file difference for making HTML pages (see HtmlDiff class for example
usage).
Note, this function utilizes the ndiff function to generate the side by
side difference markup. Optional ndiff arguments may be passed to this
function and they in turn will be passed to ndiff.
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format_key -- '+' return first line in list with "add" markup around
the entire line.
'-' return first line in list with "delete" markup around
the entire line.
'?' return first line in list with add/delete/change
intraline markup (indices obtained from second line)
None return first line in list with no markup
side -- indice into the num_lines list (0=from,1=to)
num_lines -- from/to current line number. This is NOT intended to be a
passed parameter. It is present as a keyword argument to
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or the other. In addition to yielding the lines of from/to text, a
boolean flag is yielded to indicate if the text line(s) have
differences in them.
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until it has a matching pair from/to pair to yield.
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
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<meta http-equiv="Content-Type"
content="text/html; charset=%(charset)s" />
<title></title>
<style type="text/css">%(styles)s
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</head>
<body>
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table.diff {font-family:Courier; border:medium;}
.diff_header {background-color:#e0e0e0}
td.diff_header {text-align:right}
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.diff_add {background-color:#aaffaa}
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<table class="diff" summary="Legends">
<tr> <th colspan="2"> Legends </th> </tr>
<tr> <td> <table border="" summary="Colors">
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<tr><td class="diff_add"> Added </td></tr>
<tr><td class="diff_chg">Changed</td> </tr>
<tr><td class="diff_sub">Deleted</td> </tr>
</table></td>
<td> <table border="" summary="Links">
<tr><th colspan="2"> Links </th> </tr>
<tr><td>(f)irst change</td> </tr>
<tr><td>(n)ext change</td> </tr>
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be generated in either full or contextual difference mode.
The following methods are provided for HTML generation:
make_table -- generates HTML for a single side by side table
make_file -- generates complete HTML file with a single side by side table
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fromdesc -- "from" file column header string
todesc -- "to" file column header string
context -- set to True for contextual differences (defaults to False
which shows full differences).
numlines -- number of context lines. When context is set True,
controls number of lines displayed before and after the change.
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z%dz
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eedfdd�Zddd�dd�Zedkr�e�e� � dS )a9 Tool for measuring execution time of small code snippets.
This module avoids a number of common traps for measuring execution
times. See also Tim Peters' introduction to the Algorithms chapter in
the Python Cookbook, published by O'Reilly.
Library usage: see the Timer class.
Command line usage:
python timeit.py [-n N] [-r N] [-s S] [-p] [-h] [--] [statement]
Options:
-n/--number N: how many times to execute 'statement' (default: see below)
-r/--repeat N: how many times to repeat the timer (default 5)
-s/--setup S: statement to be executed once initially (default 'pass').
Execution time of this setup statement is NOT timed.
-p/--process: use time.process_time() (default is time.perf_counter())
-v/--verbose: print raw timing results; repeat for more digits precision
-u/--unit: set the output time unit (nsec, usec, msec, or sec)
-h/--help: print this usage message and exit
--: separate options from statement, use when statement starts with -
statement: statement to be timed (default 'pass')
A multi-line statement may be given by specifying each line as a
separate argument; indented lines are possible by enclosing an
argument in quotes and using leading spaces. Multiple -s options are
treated similarly.
If -n is not given, a suitable number of loops is calculated by trying
increasing numbers from the sequence 1, 2, 5, 10, 20, 50, ... until the
total time is at least 0.2 seconds.
Note: there is a certain baseline overhead associated with executing a
pass statement. It differs between versions. The code here doesn't try
to hide it, but you should be aware of it. The baseline overhead can be
measured by invoking the program without arguments.
Classes:
Timer
Functions:
timeit(string, string) -> float
repeat(string, string) -> list
default_timer() -> float
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def inner(_it, _timer{init}):
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executed within that namespace (as opposed to inside timeit's
namespace).
To measure the execution time of the first statement, use the
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The statements may contain newlines, as long as they don't contain
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�passNc C s� || _ i }|dkrt� n|}d}t|t�rJt|td� |d }t|d�}n*t|�rl||d< |d7 }d}d}ntd ��t|t�r�t|| td� t|d
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t = Timer(...) # outside the try/except
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t.timeit(...) # or t.repeat(...)
except:
t.print_exc()
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N)� itertoolsr �gcZ isenabledZdisableZenabler r )r# �number�itZgcoldZtimingr r r
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specifies how many times to call timeit(), defaulting to 5;
the second argument specifies the timer argument, defaulting
to one million.
Note: it's tempting to calculate mean and standard deviation
from the result vector and report these. However, this is not
very useful. In a typical case, the lowest value gives a
lower bound for how fast your machine can run the given code
snippet; higher values in the result vector are typically not
caused by variability in Python's speed, but by other
processes interfering with your timing accuracy. So the min()
of the result is probably the only number you should be
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vector and apply common sense rather than statistics.
)�ranger �append)r# r r1 �r�i�tr r r
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second. Returns (number, time_taken).
If *callback* is given and is not None, it will be called after
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� )r8 � r g�������?�
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This module provides some more Pythonic support for SSL.
Object types:
SSLSocket -- subtype of socket.socket which does SSL over the socket
Exceptions:
SSLError -- exception raised for I/O errors
Functions:
cert_time_to_seconds -- convert time string used for certificate
notBefore and notAfter functions to integer
seconds past the Epoch (the time values
returned from time.time())
fetch_server_certificate (HOST, PORT) -- fetch the certificate provided
by the server running on HOST at port PORT. No
validation of the certificate is performed.
Integer constants:
SSL_ERROR_ZERO_RETURN
SSL_ERROR_WANT_READ
SSL_ERROR_WANT_WRITE
SSL_ERROR_WANT_X509_LOOKUP
SSL_ERROR_SYSCALL
SSL_ERROR_SSL
SSL_ERROR_WANT_CONNECT
SSL_ERROR_EOF
SSL_ERROR_INVALID_ERROR_CODE
The following group define certificate requirements that one side is
allowing/requiring from the other side:
CERT_NONE - no certificates from the other side are required (or will
be looked at if provided)
CERT_OPTIONAL - certificates are not required, but if provided will be
validated, and if validation fails, the connection will
also fail
CERT_REQUIRED - certificates are required, and will be validated, and
if validation fails, the connection will also fail
The following constants identify various SSL protocol variants:
PROTOCOL_SSLv2
PROTOCOL_SSLv3
PROTOCOL_SSLv23
PROTOCOL_TLS
PROTOCOL_TLS_CLIENT
PROTOCOL_TLS_SERVER
PROTOCOL_TLSv1
PROTOCOL_TLSv1_1
PROTOCOL_TLSv1_2
The following constants identify various SSL alert message descriptions as per
http://www.iana.org/assignments/tls-parameters/tls-parameters.xml#tls-parameters-6
ALERT_DESCRIPTION_CLOSE_NOTIFY
ALERT_DESCRIPTION_UNEXPECTED_MESSAGE
ALERT_DESCRIPTION_BAD_RECORD_MAC
ALERT_DESCRIPTION_RECORD_OVERFLOW
ALERT_DESCRIPTION_DECOMPRESSION_FAILURE
ALERT_DESCRIPTION_HANDSHAKE_FAILURE
ALERT_DESCRIPTION_BAD_CERTIFICATE
ALERT_DESCRIPTION_UNSUPPORTED_CERTIFICATE
ALERT_DESCRIPTION_CERTIFICATE_REVOKED
ALERT_DESCRIPTION_CERTIFICATE_EXPIRED
ALERT_DESCRIPTION_CERTIFICATE_UNKNOWN
ALERT_DESCRIPTION_ILLEGAL_PARAMETER
ALERT_DESCRIPTION_UNKNOWN_CA
ALERT_DESCRIPTION_ACCESS_DENIED
ALERT_DESCRIPTION_DECODE_ERROR
ALERT_DESCRIPTION_DECRYPT_ERROR
ALERT_DESCRIPTION_PROTOCOL_VERSION
ALERT_DESCRIPTION_INSUFFICIENT_SECURITY
ALERT_DESCRIPTION_INTERNAL_ERROR
ALERT_DESCRIPTION_USER_CANCELLED
ALERT_DESCRIPTION_NO_RENEGOTIATION
ALERT_DESCRIPTION_UNSUPPORTED_EXTENSION
ALERT_DESCRIPTION_CERTIFICATE_UNOBTAINABLE
ALERT_DESCRIPTION_UNRECOGNIZED_NAME
ALERT_DESCRIPTION_BAD_CERTIFICATE_STATUS_RESPONSE
ALERT_DESCRIPTION_BAD_CERTIFICATE_HASH_VALUE
ALERT_DESCRIPTION_UNKNOWN_PSK_IDENTITY
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The message callback provides a debugging hook to analyze TLS
connections. The callback is called for any TLS protocol message
(header, handshake, alert, and more), but not for application data.
Due to technical limitations, the callback can't be used to filter
traffic or to abort a connection. Any exception raised in the
callback is delayed until the handshake, read, or write operation
has been performed.
def msg_cb(conn, direction, version, content_type, msg_type, data):
pass
conn
:class:`SSLSocket` or :class:`SSLObject` instance
direction
``read`` or ``write``
version
:class:`TLSVersion` enum member or int for unknown version. For a
frame header, it's the header version.
content_type
:class:`_TLSContentType` enum member or int for unsupported
content type.
msg_type
Either a :class:`_TLSContentType` enum number for a header
message, a :class:`_TLSAlertType` enum member for an alert
message, a :class:`_TLSMessageType` enum member for other
messages, or int for unsupported message types.
data
Raw, decrypted message content as bytes
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user_function)r� �innerr� r, r- r� m s !zSSLContext._msg_callbackc sb � d kr t tt�j�| d � d S t� d�s8t� � d���� fdd�}� |_t tt�j�| |� d S )N�__call__z is not callable.c s� z t |�}W n tk
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| _| S )a/ Create a SSLContext object for Python stdlib modules
All Python stdlib modules shall use this function to create SSLContext
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is less restrict than create_default_context()'s to increase backward
compatibility.
FNT�certfile must be specifiedr r )r� r� r� r� r r r� �load_cert_chainr� r r� r r� r� r� r� r
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d3dd�Zdd� Zd4dd�Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd5d,d-�Zd.d/� Zd0d1� ZdS )6� SSLObjecta This class implements an interface on top of a low-level SSL object as
implemented by OpenSSL. This object captures the state of an SSL connection
but does not provide any network IO itself. IO needs to be performed
through separate "BIO" objects which are OpenSSL's IO abstraction layer.
This class does not have a public constructor. Instances are returned by
``SSLContext.wrap_bio``. This class is typically used by framework authors
that want to implement asynchronous IO for SSL through memory buffers.
When compared to ``SSLSocket``, this object lacks the following features:
* Any form of network IO, including methods such as ``recv`` and ``send``.
* The ``do_handshake_on_connect`` and ``suppress_ragged_eofs`` machinery.
c O s t | jj� d���d S )NzU does not have a public constructor. Instances are returned by SSLContext.wrap_bio().�r� r� r8 �r� r� r� r, r, r- �__init__; s �zSSLObject.__init__FNc C s* | � | �}|j||||||d�}||_|S )N)r� r� �ownerr� )r� Z _wrap_bio�_sslobj) r� r� r� r� r� r� r� r� r� r, r, r- r� A s
�zSSLObject._createc C s | j jS )z(The SSLContext that is currently in use.�r r� r� r, r, r- r� M s zSSLObject.contextc C s || j _d S r� r �r� Zctxr, r, r- r� R s c C s | j jS )z!The SSLSession for client socket.�r r� r� r, r, r- r� V s zSSLObject.sessionc C s || j _d S r� r �r� r� r, r, r- r� [ s c C s | j jS )z.Was the client session reused during handshake�r �session_reusedr� r, r, r- r" _ s zSSLObject.session_reusedc C s | j jS )z%Whether this is a server-side socket.)r r� r� r, r, r- r� d s zSSLObject.server_sidec C s | j jS )z^The currently set server hostname (for SNI), or ``None`` if no
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| j �� S )z_Return the currently selected cipher as a 3-tuple ``(name,
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| j �� S )z�Return a list of ciphers shared by the client during the handshake or
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| j �� S )z�Return the current compression algorithm in use, or ``None`` if
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| j �� S )z8Return the number of bytes that can be read immediately.)r �pendingr� r, r, r- r0 � s zSSLObject.pendingc C s | j �� dS )z Start the SSL/TLS handshake.N)r � do_handshaker� r, r, r- r1 � s zSSLObject.do_handshakec C s
| j �� S )z!Start the SSL shutdown handshake.)r �shutdownr� r, r, r- �unwrap� s zSSLObject.unwrapr� c C s | j �|�S )z�Get channel binding data for current connection. Raise ValueError
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| j �� S )zZReturn a string identifying the protocol version used by the
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| j �� S r� )r � verify_client_post_handshaker� r, r, r- r7 � s z&SSLObject.verify_client_post_handshake)FNNN)r# N)F)r� ) r8 r9 r: rD r r� r� r r� r r� r" r� r� r$ r' r) r+ r, r- r. r/ r0 r1 r3 r4 r� r7 r, r, r, r- r , sH �
r c C s t t| j�j| _| S )z*Copy docstring from SSLObject to SSLSocket)�getattrr r8 rD )�funcr, r, r- � _sslcopydoc� s r: c s e Zd ZdZdd� ZedX� fdd� �Zeed d
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zSSLSocket.sessionc C s || _ | jd k r|| j_d S r� )rH r r� r r, r, r- r� & s
c C s | j d k r| j jS d S r� r! r� r, r, r- r" , s
zSSLSocket.session_reusedc C s t d| jj ��d S )NzCan't dup() %s instances)rB r� r8 r� r, r, r- �dup2 s �z
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C s� | � � | jdkrtd��z*|dk r4| j�||�W S | j�|�W S W nV tk
r� } z8|jd tkr�| jr�|dk r|W Y �dS W Y � dS n� W 5 d}~X Y nX dS )zORead up to LEN bytes and return them.
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zSSLSocket.writec C s | � � | �� | j�|�S r� )rR rS r r) r* r, r, r- r) ` s zSSLSocket.getpeercertc C s* | � � | jd kstjs d S | j�� S d S r� )rR r r; r r+ r� r, r, r- r+ f s z SSLSocket.selected_npn_protocolc C s* | � � | jd kstjs d S | j�� S d S r� )rR r r; r r, r� r, r, r- r, n s z SSLSocket.selected_alpn_protocolc C s$ | � � | jd krd S | j�� S d S r� )rR r r- r� r, r, r- r- v s
zSSLSocket.cipherc C s$ | � � | jd krd S | j�� S d S r� )rR r r. r� r, r, r- r. ~ s
zSSLSocket.shared_ciphersc C s$ | � � | jd krd S | j�� S d S r� )rR r r/ r� r, r, r- r/ � s
zSSLSocket.compressionr c sF | � � | jd k r4|dkr(td| j ��| j�|�S t� �||�S d S )Nr z3non-zero flags not allowed in calls to send() on %s)rR r r� r� r' r� �send)r� r� r
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�� zSSLSocket.sendc sL | � � | jd k r"td| j ��n&|d kr8t� �||�S t� �|||�S d S )Nz%sendto not allowed on instances of %s)rR r r� r� r� �sendto)r� r� Z
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s� | � � | jd k r�|dkr(td| j ��d}t|��H}|�d��2}t|�}||k rn| �||d � �}||7 }qJW 5 Q R X W 5 Q R X nt� � ||�S d S )Nr z6non-zero flags not allowed in calls to sendall() on %s�B)
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�� zSSLSocket.sendallc s, | j dk r| �|||�S t� �|||�S dS )z�Send a file, possibly by using os.sendfile() if this is a
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N)r Z_sendfile_use_sendr� �sendfile)r� �file�offsetr� r� r, r- r] � s
zSSLSocket.sendfilec sD | � � | jd k r2|dkr(td| j ��| �|�S t� �||�S d S )Nr z3non-zero flags not allowed in calls to recv() on %s)rR r r� r� r$ r� �recv�r� Zbuflenr
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�� zSSLSocket.recv_intoc s4 | � � | jd k r"td| j ��nt� �||�S d S )Nz'recvfrom not allowed on instances of %s)rR r r� r� r� �recvfromra r� r, r- re � s
�zSSLSocket.recvfromc s6 | � � | jd k r"td| j ��nt� �|||�S d S )Nz,recvfrom_into not allowed on instances of %s)rR r r� r� r� �
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�zSSLSocket.recvfrom_intoc O s t d| j ��d S )Nz&recvmsg not allowed on instances of %srW r r, r, r- �recvmsg� s �zSSLSocket.recvmsgc O s t d| j ��d S )Nz+recvmsg_into not allowed on instances of %srW r r, r, r- � recvmsg_into� s �zSSLSocket.recvmsg_intoc C s$ | � � | jd k r | j�� S dS d S )Nr )rR r r0 r� r, r, r- r0 � s
zSSLSocket.pendingc s | � � d | _t� �|� d S r� )rR r r� r2 )r� Zhowr� r, r- r2 � s zSSLSocket.shutdownc C s. | j r| j �� }d | _ |S tdt| � ��d S �NzNo SSL wrapper around )r r2 r� r� )r� �sr, r, r- r3 s
zSSLSocket.unwrapc C s$ | j r| j �� S tdt| � ��d S ri )r r7 r� r� r� r, r, r- r7 s
z&SSLSocket.verify_client_post_handshakec s d | _ t� �� d S r� )r r� � _real_closer� r� r, r- rk s zSSLSocket._real_closec C sF | � � | �� }z$|dkr(|r(| �d � | j�� W 5 | �|� X d S )NrA )rS rE rD r r1 )r� �blockrO r, r, r- r1 s
zSSLSocket.do_handshakec s� | j rtd��| js | jd k r&td��| jj| d| j| | jd�| _z@|rVt� � |�}nd }t� �
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r� d | _� Y nX d S )Nz!can't connect in server-side modez/attempt to connect already-connected SSLSocket!Fr@ T)r� r� rK r r� rL r� rH r� �
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in ``"%b %d %H:%M:%S %Y %Z"`` strptime format (C locale).
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r �_create_stdlib_contextr~ r� r) r� )
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A configuration file consists of sections, lead by a "[section]" header,
and followed by "name: value" entries, with continuations and such in
the style of RFC 822.
Intrinsic defaults can be specified by passing them into the
ConfigParser constructor as a dictionary.
class:
ConfigParser -- responsible for parsing a list of
configuration files, and managing the parsed database.
methods:
__init__(defaults=None, dict_type=_default_dict, allow_no_value=False,
delimiters=('=', ':'), comment_prefixes=('#', ';'),
inline_comment_prefixes=None, strict=True,
empty_lines_in_values=True, default_section='DEFAULT',
interpolation=<unset>, converters=<unset>):
Create the parser. When `defaults' is given, it is initialized into the
dictionary or intrinsic defaults. The keys must be strings, the values
must be appropriate for %()s string interpolation.
When `dict_type' is given, it will be used to create the dictionary
objects for the list of sections, for the options within a section, and
for the default values.
When `delimiters' is given, it will be used as the set of substrings
that divide keys from values.
When `comment_prefixes' is given, it will be used as the set of
substrings that prefix comments in empty lines. Comments can be
indented.
When `inline_comment_prefixes' is given, it will be used as the set of
substrings that prefix comments in non-empty lines.
When `strict` is True, the parser won't allow for any section or option
duplicates while reading from a single source (file, string or
dictionary). Default is True.
When `empty_lines_in_values' is False (default: True), each empty line
marks the end of an option. Otherwise, internal empty lines of
a multiline option are kept as part of the value.
When `allow_no_value' is True (default: False), options without
values are accepted; the value presented for these is None.
When `default_section' is given, the name of the special section is
named accordingly. By default it is called ``"DEFAULT"`` but this can
be customized to point to any other valid section name. Its current
value can be retrieved using the ``parser_instance.default_section``
attribute and may be modified at runtime.
When `interpolation` is given, it should be an Interpolation subclass
instance. It will be used as the handler for option value
pre-processing when using getters. RawConfigParser objects don't do
any sort of interpolation, whereas ConfigParser uses an instance of
BasicInterpolation. The library also provides a ``zc.buildbot``
inspired ExtendedInterpolation implementation.
When `converters` is given, it should be a dictionary where each key
represents the name of a type converter and each value is a callable
implementing the conversion from string to the desired datatype. Every
converter gets its corresponding get*() method on the parser object and
section proxies.
sections()
Return all the configuration section names, sans DEFAULT.
has_section(section)
Return whether the given section exists.
has_option(section, option)
Return whether the given option exists in the given section.
options(section)
Return list of configuration options for the named section.
read(filenames, encoding=None)
Read and parse the iterable of named configuration files, given by
name. A single filename is also allowed. Non-existing files
are ignored. Return list of successfully read files.
read_file(f, filename=None)
Read and parse one configuration file, given as a file object.
The filename defaults to f.name; it is only used in error
messages (if f has no `name' attribute, the string `<???>' is used).
read_string(string)
Read configuration from a given string.
read_dict(dictionary)
Read configuration from a dictionary. Keys are section names,
values are dictionaries with keys and values that should be present
in the section. If the used dictionary type preserves order, sections
and their keys will be added in order. Values are automatically
converted to strings.
get(section, option, raw=False, vars=None, fallback=_UNSET)
Return a string value for the named option. All % interpolations are
expanded in the return values, based on the defaults passed into the
constructor and the DEFAULT section. Additional substitutions may be
provided using the `vars' argument, which must be a dictionary whose
contents override any pre-existing defaults. If `option' is a key in
`vars', the value from `vars' is used.
getint(section, options, raw=False, vars=None, fallback=_UNSET)
Like get(), but convert value to an integer.
getfloat(section, options, raw=False, vars=None, fallback=_UNSET)
Like get(), but convert value to a float.
getboolean(section, options, raw=False, vars=None, fallback=_UNSET)
Like get(), but convert value to a boolean (currently case
insensitively defined as 0, false, no, off for False, and 1, true,
yes, on for True). Returns False or True.
items(section=_UNSET, raw=False, vars=None)
If section is given, return a list of tuples with (name, value) for
each option in the section. Otherwise, return a list of tuples with
(section_name, section_proxy) for each section, including DEFAULTSECT.
remove_section(section)
Remove the given file section and all its options.
remove_option(section, option)
Remove the given option from the given section.
set(section, option, value)
Set the given option.
write(fp, space_around_delimiters=True)
Write the configuration state in .ini format. If
`space_around_delimiters' is True (the default), delimiters
between keys and values are surrounded by spaces.
� )�MutableMapping)�ChainMapN�NoSectionError�DuplicateOptionError�DuplicateSectionError�
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z DuplicateOptionError.__init__)NNr. r" r" r" r# r � s c @ s e Zd ZdZdd� ZdS )r z!A requested option was not found.c C s. t �| d||f � || _|| _||f| _d S )NzNo option %r in section: %r�r r r: r+ r, )r r: r+ r" r" r# r � s �zNoOptionError.__init__Nr. r" r" r" r# r � s c @ s e Zd ZdZdd� ZdS )r z0Base class for interpolation-related exceptions.c C s( t �| |� || _|| _|||f| _d S r r; )r r: r+ r! r" r" r# r s zInterpolationError.__init__Nr. r" r" r" r# r � s c @ s e Zd ZdZdd� ZdS )r
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N)r& r' r( r) r" r" r" r# r s c @ s e Zd ZdZdd� ZdS )r z0Raised when substitutions are nested too deeply.c C s0 d� ||t|�}t�| |||� |||f| _d S )Nz�Recursion limit exceeded in value substitution: option {!r} in section {!r} contains an interpolation key which cannot be substituted in {} steps. Raw value: {!r})r4 r r r r, )r r: r+ r= r! r" r" r# r s �z InterpolationDepthError.__init__Nr. r" r" r" r# r s c @ s< e Zd ZdZd
dd�Zedd� �Zejdd� �Zdd � ZdS ) r z>Raised when a configuration file does not follow legal syntax.Nc C sT |r|rt d��n|s$|s$t d��n|r,|}t�| d| � || _g | _|f| _d S )Nz:Cannot specify both `filename' and `source'. Use `source'.z%Required argument `source' not given.z"Source contains parsing errors: %r)�
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e5d9� � @ sV d Z ddlZddlZddlmZ dddddd gZd
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Based on RFC 959: File Transfer Protocol (FTP), by J. Postel and J. Reynolds
Example:
>>> from ftplib import FTP
>>> ftp = FTP('ftp.python.org') # connect to host, default port
>>> ftp.login() # default, i.e.: user anonymous, passwd anonymous@
'230 Guest login ok, access restrictions apply.'
>>> ftp.retrlines('LIST') # list directory contents
total 9
drwxr-xr-x 8 root wheel 1024 Jan 3 1994 .
drwxr-xr-x 8 root wheel 1024 Jan 3 1994 ..
drwxr-xr-x 2 root wheel 1024 Jan 3 1994 bin
drwxr-xr-x 2 root wheel 1024 Jan 3 1994 etc
d-wxrwxr-x 2 ftp wheel 1024 Sep 5 13:43 incoming
drwxr-xr-x 2 root wheel 1024 Nov 17 1993 lib
drwxr-xr-x 6 1094 wheel 1024 Sep 13 19:07 pub
drwxr-xr-x 3 root wheel 1024 Jan 3 1994 usr
-rw-r--r-- 1 root root 312 Aug 1 1994 welcome.msg
'226 Transfer complete.'
>>> ftp.quit()
'221 Goodbye.'
>>>
A nice test that reveals some of the network dialogue would be:
python ftplib.py -d localhost -l -p -l
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The first four arguments are all strings, and have default value ''.
timeout must be numeric and defaults to None if not passed,
meaning that no timeout will be set on any ftp socket(s)
If a timeout is passed, then this is now the default timeout for all ftp
socket operations for this instance.
Then use self.connect() with optional host and port argument.
To download a file, use ftp.retrlines('RETR ' + filename),
or ftp.retrbinary() with slightly different arguments.
To upload a file, use ftp.storlines() or ftp.storbinary(),
which have an open file as argument (see their definitions
below for details).
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and PORT or PASV commands.
r � Nr zlatin-1Fc C s0 || _ || _|r,| �|� |r,| �|||� d S �N)�source_address�timeout�connect�login)�self�host�user�passwd�acctr r r r r �__init__r s
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z FTP.getlinec C s` | � � }|dd� dkr\|d d� }| � � }|d| }|d d� |kr$|dd� dkr$q\q$|S )N� � �-rL )rZ )r rR �codeZnextliner r r � getmultiline� s �zFTP.getmultilinec C sp | � � }| jr td| �|�� |d d� | _|d d� }|dkrD|S |dkrTt|��|dkrdt|��t|��d S )Nz*resp*r[ r > �1�3�2�4�5)r_ r9 r: r; Zlastrespr r r )r �resp�cr r r r7 � s z FTP.getrespc C s$ | � � }|dd� dkr t|��|S )z%Expect a response beginning with '2'.Nr rb )r7 r �r re r r r �voidresp� s z FTP.voidrespc C sT dt }| jdkr"td| �|�� | j�|t� | �� }|dd� dkrPt|��|S )z�Abort a file transfer. Uses out-of-band data.
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| j� |S )z3Create a new socket and send a PORT command for it.)r r r )r3 Zbacklogr ) r1 Z
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z FTP.makeportc C s\ | j tjkr:t| �d��\}}| jr*|}qT| j�� d }nt| �d�| j�� �\}}||fS )z<Internal: Does the PASV or EPSV handshake -> (address, port)�PASVr ZEPSV) r4 r1 r �parse227rt � trust_server_pasv_ipv4_addressr" Z getpeername�parse229)r Zuntrusted_hostr. r r r r �makepasv@ s z FTP.makepasvc
C s6 d}| j r�| �� \}}tj||f| j| jd�}zL|dk rF| �d| � | �|�}|d dkrd| �� }|d dkrxt|��W n |� � � Y nX n�| �
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| j� W 5 Q R X |dd� dk�r.t|�}||fS ) a� Initiate a transfer over the data connection.
If the transfer is active, send a port command and the
transfer command, and accept the connection. If the server is
passive, send a pasv command, connect to it, and start the
transfer command. Either way, return the socket for the
connection and the expected size of the transfer. The
expected size may be None if it could not be determined.
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argument to a REST command. This is essentially a server
marker used to tell the server to skip over any data up to the
given marker.
Nr* zREST %sr rb r` r[ �150)r? r� r1 r2 r r rt r7 r r# r� Zacceptr r� �parse150)
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anonymous@zUSER r ra rC �ACCT rb �rt r )r r r r re r r r r � s z FTP.loginr c C s^ | � d� | �||��:}|�|�}|s(q2||� qtdk rLt|t�rL|�� W 5 Q R X | �� S )a� Retrieve data in binary mode. A new port is created for you.
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cmd: A RETR command.
callback: A single parameter callable to be called on each
block of data read.
blocksize: The maximum number of bytes to read from the
socket at one time. [default: 8192]
rest: Passed to transfercmd(). [default: None]
Returns:
The response code.
�TYPE IN)ru r� Zrecv�
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[default: print_line()]
Returns:
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N�TYPE Ar+ r, r rU r} z*retr*rV rW rL )�
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FTP.retrlinesc C sl | � d� | �||��H}|�|�}|s(q@|�|� |r||� qtdk rZt|t�rZ|�� W 5 Q R X | �� S )a9 Store a file in binary mode. A new port is created for you.
Args:
cmd: A STOR command.
fp: A file-like object with a read(num_bytes) method.
blocksize: The maximum data size to read from fp and send over
the connection at once. [default: 8192]
callback: An optional single parameter callable that is called on
each block of data after it is sent. [default: None]
rest: Passed to transfercmd(). [default: None]
Returns:
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r� N)ru r� �readrO r� r� r� rh )r rs r� r� r� r� r� �bufr r r �
storbinary� s
zFTP.storbinaryc C s� | � d� | �|���}|�| jd �}t|�| jkrBtd| j ��|sHq�|dd� tkrx|d tkrp|dd� }|t }|�|� |r||� qtdk r�t |t�r�|�
� W 5 Q R X | � � S )ah Store a file in line mode. A new port is created for you.
Args:
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fp: A file-like object with a readline() method.
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each line after it is sent. [default: None]
Returns:
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r� r rU rV NrW ) ru r� rX rY rF r rn rO r� r� r� rh )r rs r� r� r� r� r r r � storlines� s"
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FTP.storlinesc C s d| }| � |�S )zSend new account name.r� �ru )r Zpasswordrs r r r r s zFTP.acctc G s0 d}|D ]}|d| }qg }| � ||j� |S )zBReturn a list of files in a given directory (default the current).ZNLST� )r� �append)r r' rs �arg�filesr r r �nlst s zFTP.nlstc G sh d}d}|dd� r>t |d �t d�kr>|dd� |d }}|D ]}|rB|d| }qB| �||� dS )a List a directory in long form.
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command (RFC-3659). If path is omitted the current directory
is assumed. "facts" is a list of strings representing the type
of information desired (e.g. ["type", "size", "perm"]).
Return a generator object yielding a tuple of two elements
for every file found in path.
First element is the file name, the second one is a dictionary
including a variable number of "facts" depending on the server
and whether "facts" argument has been provided.
z
OPTS MLST �;zMLSD %sZMLSDr� NrW �=) rt rz r� r� rG rN � partitionry �lower)
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zFTP.mlsdc C s0 | � d| �}|d dkr"t|��| �d| �S )zRename a file.zRNFR r ra zRNTO )rt r ru )r ZfromnameZtonamere r r r �renameS s z
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zChange to a directory.z..ZCDUPr Nr[ �500r rv zCWD )ru r r' )r �dirname�msgrs r r r �cwdb s zFTP.cwdc C s: | � d| �}|dd� dkr6|dd� �� }t|�S dS )z Retrieve the size of a file.zSIZE Nr[ Z213)rt �strip�int)r r� re rI r r r r� o s zFTP.sizec C s$ | � d| �}|�d�s dS t|�S )z+Make a directory, return its full pathname.zMKD �257r �ru �
startswith�parse257)r r� re r r r �mkdw s
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>>> ftps.login() # login anonymously previously securing control channel
'230 Guest login ok, access restrictions apply.'
>>> ftps.prot_p() # switch to secure data connection
'200 Protection level set to P'
>>> ftps.retrlines('LIST') # list directory content securely
total 9
drwxr-xr-x 8 root wheel 1024 Jan 3 1994 .
drwxr-xr-x 8 root wheel 1024 Jan 3 1994 ..
drwxr-xr-x 2 root wheel 1024 Jan 3 1994 bin
drwxr-xr-x 2 root wheel 1024 Jan 3 1994 etc
d-wxrwxr-x 2 ftp wheel 1024 Sep 5 13:43 incoming
drwxr-xr-x 2 root wheel 1024 Nov 17 1993 lib
drwxr-xr-x 6 1094 wheel 1024 Sep 13 19:07 pub
drwxr-xr-x 3 root wheel 1024 Jan 3 1994 usr
-rw-r--r-- 1 root root 312 Aug 1 1994 welcome.msg
'226 Transfer complete.'
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'221 Goodbye.'
>>>
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- os.curdir is a string representing the current directory (always '.')
- os.pardir is a string representing the parent directory (always '..')
- os.sep is the (or a most common) pathname separator ('/' or '\\')
- os.extsep is the extension separator (always '.')
- os.altsep is the alternate pathname separator (None or '/')
- os.pathsep is the component separator used in $PATH etc
- os.linesep is the line separator in text files ('\r' or '\n' or '\r\n')
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Super-rename; create directories as necessary and delete any left
empty. Works like rename, except creation of any intermediate
directories needed to make the new pathname good is attempted
first. After the rename, directories corresponding to rightmost
path segments of the old name will be pruned until either the
whole path is consumed or a nonempty directory is found.
Note: this function can fail with the new directory structure made
if you lack permissions needed to unlink the leaf directory or
file.
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|��s�t ||||�E dH �q�n,|D ]}t ||||�E dH �q�| ||fV dS )a Directory tree generator.
For each directory in the directory tree rooted at top (including top
itself, but excluding '.' and '..'), yields a 3-tuple
dirpath, dirnames, filenames
dirpath is a string, the path to the directory. dirnames is a list of
the names of the subdirectories in dirpath (excluding '.' and '..').
filenames is a list of the names of the non-directory files in dirpath.
Note that the names in the lists are just names, with no path components.
To get a full path (which begins with top) to a file or directory in
dirpath, do os.path.join(dirpath, name).
If optional arg 'topdown' is true or not specified, the triple for a
directory is generated before the triples for any of its subdirectories
(directories are generated top down). If topdown is false, the triple
for a directory is generated after the triples for all of its
subdirectories (directories are generated bottom up).
When topdown is true, the caller can modify the dirnames list in-place
(e.g., via del or slice assignment), and walk will only recurse into the
subdirectories whose names remain in dirnames; this can be used to prune the
search, or to impose a specific order of visiting. Modifying dirnames when
topdown is false has no effect on the behavior of os.walk(), since the
directories in dirnames have already been generated by the time dirnames
itself is generated. No matter the value of topdown, the list of
subdirectories is retrieved before the tuples for the directory and its
subdirectories are generated.
By default errors from the os.scandir() call are ignored. If
optional arg 'onerror' is specified, it should be a function; it
will be called with one argument, an OSError instance. It can
report the error to continue with the walk, or raise the exception
to abort the walk. Note that the filename is available as the
filename attribute of the exception object.
By default, os.walk does not follow symbolic links to subdirectories on
systems that support them. In order to get this functionality, set the
optional argument 'followlinks' to true.
Caution: if you pass a relative pathname for top, don't change the
current working directory between resumptions of walk. walk never
changes the current directory, and assumes that the client doesn't
either.
Example:
import os
from os.path import join, getsize
for root, dirs, files in os.walk('python/Lib/email'):
print(root, "consumes", end="")
print(sum(getsize(join(root, name)) for name in files), end="")
print("bytes in", len(files), "non-directory files")
if 'CVS' in dirs:
dirs.remove('CVS') # don't visit CVS directories
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`dirpath`, `dirnames` and `filenames` are identical to walk() output,
and `dirfd` is a file descriptor referring to the directory `dirpath`.
The advantage of fwalk() over walk() is that it's safe against symlink
races (when follow_symlinks is False).
If dir_fd is not None, it should be a file descriptor open to a directory,
and top should be relative; top will then be relative to that directory.
(dir_fd is always supported for fwalk.)
Caution:
Since fwalk() yields file descriptors, those are only valid until the
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for a longer period.
Example:
import os
for root, dirs, files, rootfd in os.fwalk('python/Lib/email'):
print(root, "consumes", end="")
print(sum(os.stat(name, dir_fd=rootfd).st_size for name in files),
end="")
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if 'CVS' in dirs:
dirs.remove('CVS') # don't visit CVS directories
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c C s t | |||t�S )a\ spawnvpe(mode, file, args, env) -> integer
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The `ast` module helps Python applications to process trees of the Python
abstract syntax grammar. The abstract syntax itself might change with
each Python release; this module helps to find out programmatically what
the current grammar looks like and allows modifications of it.
An abstract syntax tree can be generated by passing `ast.PyCF_ONLY_AST` as
a flag to the `compile()` builtin function or by using the `parse()`
function from this module. The result will be a tree of objects whose
classes all inherit from `ast.AST`.
A modified abstract syntax tree can be compiled into a Python code object
using the built-in `compile()` function.
Additionally various helper functions are provided that make working with
the trees simpler. The main intention of the helper functions and this
module in general is to provide an easy to use interface for libraries
that work tightly with the python syntax (template engines for example).
:copyright: Copyright 2008 by Armin Ronacher.
:license: Python License.
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Parse the source into an AST node.
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Safely evaluate an expression node or a string containing a Python
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Return a formatted dump of the tree in node. This is mainly useful for
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Copy source location (`lineno`, `col_offset`, `end_lineno`, and `end_col_offset`
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recursively where not already set, by setting them to the values of the
parent node. It works recursively starting at *node*.
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Increment the line number and end line number of each node in the tree
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Yield a tuple of ``(fieldname, value)`` for each field in ``node._fields``
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Yield all direct child nodes of *node*, that is, all fields that are nodes
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Return the docstring for the given node or None if no docstring can
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� d� |�S )aB Get source code segment of the *source* that generated *node*.
If some location information (`lineno`, `end_lineno`, `col_offset`,
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rZ Nrg r ) rL rN rM rO r< rm �encode�decoderp �insertr= rA ) r r rq rL rN rM rO rk Zpadding�firstZlastr r r �get_source_segment* s&
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Recursively yield all descendant nodes in the tree starting at *node*
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A node visitor base class that walks the abstract syntax tree and calls a
visitor function for every node found. This function may return a value
which is forwarded by the `visit` method.
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methods.
Per default the visitor functions for the nodes are ``'visit_'`` +
class name of the node. So a `TryFinally` node visit function would
be `visit_TryFinally`. This behavior can be changed by overriding
the `visit` method. If no visitor function exists for a node
(return value `None`) the `generic_visit` visitor is used instead.
Don't use the `NodeVisitor` if you want to apply changes to nodes during
traversing. For this a special visitor exists (`NodeTransformer`) that
allows modifications.
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Visit a node.�visit_)r? r@ r; �
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d� ||�S | � |�S )Nr| r z" is deprecated; add visit_Constant� ) r �_const_node_type_names�getr �itemsr r; r< �warnings�warn�PendingDeprecationWarningr} ) r~ r r Z type_name�clsr` r r� r� r r r �visit_Constant s(
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A :class:`NodeVisitor` subclass that walks the abstract syntax tree and
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the visitor method is ``None``, the node will be removed from its location,
otherwise it is replaced with the return value. The return value may be the
original node in which case no replacement takes place.
Here is an example transformer that rewrites all occurrences of name lookups
(``foo``) to ``data['foo']``::
class RewriteName(NodeTransformer):
def visit_Name(self, node):
return Subscript(
value=Name(id='data', ctx=Load()),
slice=Index(value=Str(s=node.id)),
ctx=node.ctx
)
Keep in mind that if the node you're operating on has child nodes you must
either transform the child nodes yourself or call the :meth:`generic_visit`
method for the node first.
For nodes that were part of a collection of statements (that applies to all
statement nodes), the visitor may also return a list of nodes rather than
just a single node.
Usually you use the transformer like this::
node = YourTransformer().visit(node)
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�z_ABC.__instancecheck__N)r@ r� r� r� r r r r r� � s r� c O sf |D ]<}|| j krq| j �|�}|t|�k rt| j� d|����q| tkrTt||�S tj| f|�|�S )Nz" got multiple values for argument )r: �indexr) rJ r@ r� r �__new__)r� rC �kwargs�key�posr r r �_new� s
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than using new(name):
md5(), sha1(), sha224(), sha256(), sha384(), sha512(), blake2b(), blake2s(),
sha3_224, sha3_256, sha3_384, sha3_512, shake_128, and shake_256.
More algorithms may be available on your platform but the above are guaranteed
to exist. See the algorithms_guaranteed and algorithms_available attributes
to find out what algorithm names can be passed to new().
NOTE: If you want the adler32 or crc32 hash functions they are available in
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Choose your hash function wisely. Some have known collision weaknesses.
sha384 and sha512 will be slow on 32 bit platforms.
Hash objects have these methods:
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so far as a bytes object.
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of double length, containing only hexadecimal digits.
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efficiently compute the digests of datas that share a common
initial substring.
For example, to obtain the digest of the byte string 'Nobody inspects the
spammish repetition':
>>> import hashlib
>>> m = hashlib.md5()
>>> m.update(b"Nobody inspects")
>>> m.update(b" the spammish repetition")
>>> m.digest()
b'\xbbd\x9c\x83\xdd\x1e\xa5\xc9\xd9\xde\xc9\xa1\x8d\xf0\xff\xe9'
More condensed:
>>> hashlib.sha224(b"Nobody inspects the spammish repetition").hexdigest()
'a4337bc45a8fc544c03f52dc550cd6e1e87021bc896588bd79e901e2'
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next line of input (or b"" for EOF). It generates 5-tuples with these
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the token type (see token.py)
the token (a string)
the starting (row, column) indices of the token (a 2-tuple of ints)
the ending (row, column) indices of the token (a 2-tuple of ints)
the original line (string)
It is designed to match the working of the Python tokenizer exactly, except
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t1 = [tok[:2] for tok in tokenize(f.readline)]
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ast
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The `ast` module helps Python applications to process trees of the Python
abstract syntax grammar. The abstract syntax itself might change with
each Python release; this module helps to find out programmatically what
the current grammar looks like and allows modifications of it.
An abstract syntax tree can be generated by passing `ast.PyCF_ONLY_AST` as
a flag to the `compile()` builtin function or by using the `parse()`
function from this module. The result will be a tree of objects whose
classes all inherit from `ast.AST`.
A modified abstract syntax tree can be compiled into a Python code object
using the built-in `compile()` function.
Additionally various helper functions are provided that make working with
the trees simpler. The main intention of the helper functions and this
module in general is to provide an easy to use interface for libraries
that work tightly with the python syntax (template engines for example).
:copyright: Copyright 2008 by Armin Ronacher.
:license: Python License.
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Parse the source into an AST node.
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parent node. It works recursively starting at *node*.
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Increment the line number and end line number of each node in the tree
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A node visitor base class that walks the abstract syntax tree and calls a
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A :class:`NodeVisitor` subclass that walks the abstract syntax tree and
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the visitor method is ``None``, the node will be removed from its location,
otherwise it is replaced with the return value. The return value may be the
original node in which case no replacement takes place.
Here is an example transformer that rewrites all occurrences of name lookups
(``foo``) to ``data['foo']``::
class RewriteName(NodeTransformer):
def visit_Name(self, node):
return Subscript(
value=Name(id='data', ctx=Load()),
slice=Index(value=Str(s=node.id)),
ctx=node.ctx
)
Keep in mind that if the node you're operating on has child nodes you must
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method for the node first.
For nodes that were part of a collection of statements (that applies to all
statement nodes), the visitor may also return a list of nodes rather than
just a single node.
Usually you use the transformer like this::
node = YourTransformer().visit(node)
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exc_value: exception value to be used in error message
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message (or default) can be accesses as class variable
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error messages. Defaults to the source file name.
:param doraise: Flag indicating whether or not an exception should be
raised when a compile error is found. If an exception occurs and this
flag is set to False, a string indicating the nature of the exception
will be printed, and the function will return to the caller. If an
exception occurs and this flag is set to True, a PyCompileError
exception will be raised.
:param optimize: The optimization level for the compiler. Valid values
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:param invalidation_mode:
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:return: Path to the resulting byte compiled file.
Note that it isn't necessary to byte-compile Python modules for
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Turtle graphics is a popular way for introducing programming to
kids. It was part of the original Logo programming language developed
by Wally Feurzig and Seymour Papert in 1966.
Imagine a robotic turtle starting at (0, 0) in the x-y plane. After an ``import turtle``, give it
the command turtle.forward(15), and it moves (on-screen!) 15 pixels in
the direction it is facing, drawing a line as it moves. Give it the
command turtle.right(25), and it rotates in-place 25 degrees clockwise.
By combining together these and similar commands, intricate shapes and
pictures can easily be drawn.
----- turtle.py
This module is an extended reimplementation of turtle.py from the
Python standard distribution up to Python 2.5. (See: http://www.python.org)
It tries to keep the merits of turtle.py and to be (nearly) 100%
compatible with it. This means in the first place to enable the
learning programmer to use all the commands, classes and methods
interactively when using the module from within IDLE run with
the -n switch.
Roughly it has the following features added:
- Better animation of the turtle movements, especially of turning the
turtle. So the turtles can more easily be used as a visual feedback
instrument by the (beginning) programmer.
- Different turtle shapes, gif-images as turtle shapes, user defined
and user controllable turtle shapes, among them compound
(multicolored) shapes. Turtle shapes can be stretched and tilted, which
makes turtles very versatile geometrical objects.
- Fine control over turtle movement and screen updates via delay(),
and enhanced tracer() and speed() methods.
- Aliases for the most commonly used commands, like fd for forward etc.,
following the early Logo traditions. This reduces the boring work of
typing long sequences of commands, which often occur in a natural way
when kids try to program fancy pictures on their first encounter with
turtle graphics.
- Turtles now have an undo()-method with configurable undo-buffer.
- Some simple commands/methods for creating event driven programs
(mouse-, key-, timer-events). Especially useful for programming games.
- A scrollable Canvas class. The default scrollable Canvas can be
extended interactively as needed while playing around with the turtle(s).
- A TurtleScreen class with methods controlling background color or
background image, window and canvas size and other properties of the
TurtleScreen.
- There is a method, setworldcoordinates(), to install a user defined
coordinate-system for the TurtleScreen.
- The implementation uses a 2-vector class named Vec2D, derived from tuple.
This class is public, so it can be imported by the application programmer,
which makes certain types of computations very natural and compact.
- Appearance of the TurtleScreen and the Turtles at startup/import can be
configured by means of a turtle.cfg configuration file.
The default configuration mimics the appearance of the old turtle module.
- If configured appropriately the module reads in docstrings from a docstring
dictionary in some different language, supplied separately and replaces
the English ones by those read in. There is a utility function
write_docstringdict() to write a dictionary with the original (English)
docstrings to disc, so it can serve as a template for translations.
Behind the scenes there are some features included with possible
extensions in mind. These will be commented and documented elsewhere.
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<KeyPress>z
<KeyPress-%s>c s
� � d S r� r� rj rk r� r� r` � s z.TurtleScreenBase._onkeypress.<locals>.eventfunrh rl r� rk r� � _onkeypress� s z TurtleScreenBase._onkeypressc C s | j �� dS )z=Set focus on canvas (in order to collect key-events)
N)r. r r� r� r� r� �_listen� s zTurtleScreenBase._listenc C s( |dkr| j �|� n| j �||� dS )z?Install a timer, which calls fun after t milliseconds.
r N)r. Z
after_idlerK �r� r_ �tr� r� r� �_ontimer� s zTurtleScreenBase._ontimerc C s | j jdd|d�S )z0Create and return image item on canvas.
r ��image)r. Z create_image)r� rt r� r� r� � _createimage� s z TurtleScreenBase._createimagec C s< |\}}| j �||| j | | j f� | j j||d� dS )zZConfigure image item as to draw image object
at position (x,y) on canvas)
rs N)r. r? r4 r5 �
itemconfig)r� rH r[ rt r� r� r� r� r� �
_drawimage� s zTurtleScreenBase._drawimagec C s | j j||d� | j �|� dS )z�Configure image item as to draw image object
at center of canvas. Set item to the first item
in the displaylist, so it will be drawn below
any other item .rs N)r. rv Z tag_lower)r� rH rt r� r� r� � _setbgpic� s zTurtleScreenBase._setbgpicc C s | j �|�S )zQReturn 'line' or 'polygon' or 'image' depending on
type of item.
)r. r� rG r� r� r� �_type� s zTurtleScreenBase._typec s. | j �|�� � fdd�tdt� �d�D �}|S )a returns list of coordinate-pairs of points of item
Example (for insiders):
>>> from turtle import *
>>> getscreen()._pointlist(getturtle().turtle._item)
[(0.0, 9.9999999999999982), (0.0, -9.9999999999999982),
(9.9999999999999982, 0.0)]
>>> c s" g | ]}� | � |d f�qS )r� r� ��.0�i�rB r� r� �
<listcomp>� s z/TurtleScreenBase._pointlist.<locals>.<listcomp>r r� )r. r? �range�len)r� rH �plr� r} r� �
_pointlist� s zTurtleScreenBase._pointlistc C s | j j||||fd� d S )Nr3 )r. r
)r� �srx1�sry1�srx2�sry2r� r� r� �_setscrollregion� s z!TurtleScreenBase._setscrollregionc C s| | j �� }|D ]h}t| j �|��}g }|rd|d d� \}}|�|| � |�|| � |dd � }q&| j j|f|�� qd S )Nr� )r. Zfind_allr� r? r> ) r� Z xscalefactorZ yscalefactorr� rH Z coordinatesZ newcoordlistr� r� r� r� r� �_rescale� s
zTurtleScreenBase._rescalec C sz t | jt�s| j| jfS || kr6| kr6dkrJn n| jj| jjfS |dk rX|| _|dk rf|| _| j�|||� dS )zaResize the canvas the turtles are drawing on. Does
not alter the drawing window.
N)r� r. r r� r� r` r r� r� r� �_resize s "zTurtleScreenBase._resizec C s@ | j �� }|dkr | j d }| j �� }|dkr8| j d }||fS )z; Return the width and height of the turtle window.
r� rz r� )r. r r )r� rz r� r� r� r� � _window_size s
z TurtleScreenBase._window_sizec C s | j j�� dS )a{ Starts event loop - calling Tkinter's mainloop function.
No argument.
Must be last statement in a turtle graphics program.
Must NOT be used if a script is run from within IDLE in -n mode
(No subprocess) - for interactive use of turtle graphics.
Example (for a TurtleScreen instance named screen):
>>> screen.mainloop()
N)r. Ztkr r� r� r� r� r s
zTurtleScreenBase.mainloopc C s t j||| jd�S )a� Pop up a dialog window for input of a string.
Arguments: title is the title of the dialog window,
prompt is a text mostly describing what information to input.
Return the string input
If the dialog is canceled, return None.
Example (for a TurtleScreen instance named screen):
>>> screen.textinput("NIM", "Name of first player:")
)�parent)r Z askstringr. )r� r) �promptr� r� r� r( . s
zTurtleScreenBase.textinputc C s t j|||||| jd�S )a� Pop up a dialog window for input of a number.
Arguments: title is the title of the dialog window,
prompt is a text mostly describing what numerical information to input.
default: default value
minval: minimum value for input
maxval: maximum value for input
The number input must be in the range minval .. maxval if these are
given. If not, a hint is issued and the dialog remains open for
correction. Return the number input.
If the dialog is canceled, return None.
Example (for a TurtleScreen instance named screen):
>>> screen.numinput("Poker", "Your stakes:", 1000, minval=10, maxval=10000)
)Z initialvalueZminvalueZmaxvaluer� )r Zaskfloatr. )r� r) r� �defaultZminvalZmaxvalr� r� r� r = s
�zTurtleScreenBase.numinput)NNNF)NNNF)N)r� N)r� N)r� N)r� N)N)NNN)NNN)%r� r� r� r� r0 r2 r� r: rC rD rE rI rJ rM rO rP rX re rf rg ri rm rn ro rr ru rw rx ry r� r� r� r� r� r r( r r� r� r� r� r, � sT
�
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r, c @ s e Zd ZdZdS )r� z�Will be raised in TurtleScreen.update, if _RUNNING becomes False.
This stops execution of a turtle graphics script.
Main purpose: use in the Demo-Viewer turtle.Demo.py.
N�r� r� r� r� r� r� r� r� r� Y s c @ s e Zd ZdZdS )�TurtleGraphicsErrorz Some TurtleGraphics Error
Nr� r� r� r� r� r� b s r� c @ s$ e Zd ZdZddd�Zddd�ZdS ) r z�Data structure modeling shapes.
attribute _type is one of "polygon", "image", "compound"
attribute _data is - depending on _type a poygon-tuple,
an image or a list constructed using the addcomponent method.
Nc C sz || _ |dkr"t|t�rpt|�}nN|dkrVt|t�rp|�� �d�rpt|�rpt� |�}n|dkrdg }n t
d| ��|| _ d S )N�polygonrt �.gif�compoundzThere is no shape type %s) ry r� r� r� r� �lower�endswithr r r2 r� �_data)r� Ztype_�datar� r� r� r� n s
zShape.__init__c C s: | j dkrtd| j ��|dkr$|}| j�|||g� dS )a- Add component to a shape of type compound.
Arguments: poly is a polygon, i. e. a tuple of number pairs.
fill is the fillcolor of the component,
outline is the outline color of the component.
call (for a Shapeobject namend s):
-- s.addcomponent(((0,0), (10,10), (-10,10)), "red", "blue")
Example:
>>> poly = ((0,0),(10,-5),(0,10),(-10,-5))
>>> s = Shape("compound")
>>> s.addcomponent(poly, "red", "blue")
>>> # .. add more components and then use register_shape()
r� z Cannot add component to %s ShapeN)ry r� r� r> )r� �polyr" r9 r� r� r� � addcomponent~ s
�zShape.addcomponent)N)N)r� r� r� r� r� r� r� r� r� r� r g s
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� Zdd� Z dS )�Tbufferz5Ring buffer used as undobuffer for RawTurtle objects.r� c C s$ || _ d gg| | _d| _d| _d S )Nr� F)�bufsize�buffer�ptr�cumulate)r� r� r� r� r� r� � s zTbuffer.__init__Nc C sD |d kr&t | j�D ]}d g| j|< qn|| _d gg| | _d| _d S )Nr� )r r� r� r� )r� r� r| r� r� r� r` � s z
Tbuffer.resetc C sF | j dkrB| js0| jd | j | _|| j| j< n| j| j �|� d S r� )r� r� r� r� r> rG r� r� r� �push� s
z Tbuffer.pushc C sJ | j dkrF| j| j }|d kr"d S d g| j| j< | jd | j | _|S d S r� )r� r� r� rG r� r� r� �pop� s
z Tbuffer.popc C s | j | j�d g� S r� )r� r� �countr� r� r� r� � nr_of_items� s zTbuffer.nr_of_itemsc C s t | j�d t | j� S )N� )r� r� r� r� r� r� r� r� � s zTbuffer.__repr__)r� )N)
r� r� r� r� r� r` r� r� r� r� r� r� r� r� r� � s
r� c @ s" e Zd ZdZdZed ed ed fdd�Zdd � Zd=d d �Zd
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dd� Zdd� Zdd � Zd@d d �ZdAd d �Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� ZdBd.d/�Zd0d1� ZdCd2d3�ZdDd4d5�Z dEd7d8�Z dFd9d:�Z dGd;d<�Z eZ eZ!eZ"e
Z#eZ$d
S )Hr z�Provides screen oriented methods like setbg etc.
Only relies upon the methods of TurtleScreenBase and NOT
upon components of the underlying graphics toolkit -
which is Tkinter in this case.
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kr�|�� }|�ddddd� |�ddddd� d S )Nr� )����r �r� r �r r� ))r � )���� )r� r� )���� )���� )���� )���� )r� r� )������)���r� )r� r� )r� r� �r r� )� r� )� r� )r� r� )r� r� )r� r� )r� r� )r� r� )r� r� )r� r� )r� r� )r� r� )r� )��Q� #@� ��Q�@)�G�z. @��Q� �@)r� r� )r� r� r� )� ��Q��r� )��Q� ��r� )�G�z. �r� )��Q� #�r� r� )r� r� )r� r� )r� r� )r� r� )g �g $�)r� r� )r� r� )r� r� )r� r� ))r� r� )r� r� )r� r� )r� r� ))r� ��G�z�)r g�����'@)r� r� )�r r )r� r� r� )r� r� rt )Zarrowr� r4 ZsquareZtriangler� r/ �nopicr� r �darwinZwmZ
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zTurtleScreen.__init__c C s� t d | _t d | _| �d� | �d�| _d| _d| _d| _g | _ | �
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S ) aq Delete all drawings and all turtles from the TurtleScreen.
No argument.
Reset empty TurtleScreen to its initial state: white background,
no backgroundimage, no eventbindings and tracing on.
Example (for a TurtleScreen instance named screen):
>>> screen.clear()
Note: this method is not available as function.
r r �allr� r� r� r r� )r� r� � N)r� r� r� rI ru �_bgpic�
_bgpicname�_tracing�_updatecounter�_turtlesr rR r r� r r �_pen)r� �btnr� r� r� r� r5 � s
zTurtleScreen.clearNc C s| |dkr| j S |�� }|dkr*td| ��|| _ |dkrp| �| j d | j d | jd | jd � d | _| _| �� dS )ah Set turtle-mode ('standard', 'logo' or 'world') and perform reset.
Optional argument:
mode -- one of the strings 'standard', 'logo' or 'world'
Mode 'standard' is compatible with turtle.py.
Mode 'logo' is compatible with most Logo-Turtle-Graphics.
Mode 'world' uses userdefined 'worldcoordinates'. *Attention*: in
this mode angles appear distorted if x/y unit-ratio doesn't equal 1.
If mode is not given, return the current mode.
Mode Initial turtle heading positive angles
------------|-------------------------|-------------------
'standard' to the right (east) counterclockwise
'logo' upward (north) clockwise
Examples:
>>> mode('logo') # resets turtle heading to north
>>> mode()
'logo'
N�r� �logo�worldzNo turtle-graphics-mode %s)r� r� r� r� ) r� r� r� r� r� r� r4 r5 r` �r� r r� r� r� r s � zTurtleScreen.modec C s� | � � dkr| � d� t|| �}t|| �}| �� \}}| �|d |d � | j| j } }
| j| | _| j| | _|| j } | | j } | j| }
| j| }| �| | |
|� | � | j| | j|
� | �
� dS )as Set up a user defined coordinate-system.
Arguments:
llx -- a number, x-coordinate of lower left corner of canvas
lly -- a number, y-coordinate of lower left corner of canvas
urx -- a number, x-coordinate of upper right corner of canvas
ury -- a number, y-coordinate of upper right corner of canvas
Set up user coodinat-system and switch to mode 'world' if necessary.
This performs a screen.reset. If mode 'world' is already active,
all drawings are redrawn according to the new coordinates.
But ATTENTION: in user-defined coordinatesystems angles may appear
distorted. (see Screen.mode())
Example (for a TurtleScreen instance named screen):
>>> screen.setworldcoordinates(-10,-0.5,50,1.5)
>>> for _ in range(36):
... left(10)
... forward(0.5)
r� � N) r r� r� r% r4 r5 r� r� r� r� r, )r� ZllxZllyZurxZuryZxspanZyspanZwxZwyZ oldxscaleZ oldyscaler� r� r� r� r� r� r� r' - s
z TurtleScreen.setworldcoordinatesc C sT |dkr2|� � �d�r(td| �|��}qFtd��nt|t�rFtd|�}|| j|< dS )a� Adds a turtle shape to TurtleScreen's shapelist.
Arguments:
(1) name is the name of a gif-file and shape is None.
Installs the corresponding image shape.
!! Image-shapes DO NOT rotate when turning the turtle,
!! so they do not display the heading of the turtle!
(2) name is an arbitrary string and shape is a tuple
of pairs of coordinates. Installs the corresponding
polygon shape
(3) name is an arbitrary string and shape is a
(compound) Shape object. Installs the corresponding
compound shape.
To use a shape, you have to issue the command shape(shapename).
call: register_shape("turtle.gif")
--or: register_shape("tri", ((0,0), (10,10), (-10,10)))
Example (for a TurtleScreen instance named screen):
>>> screen.register_shape("triangle", ((5,-3),(0,5),(-5,-3)))
Nr� rt z;Bad arguments for register_shape.
Use help(register_shape)r� )r� r� r r2 r� r� r� r� )r� �namerk r� r� r� r# T s
zTurtleScreen.register_shapec C s t |�dkr|d }t|t�rD| �|�s0|dkr4|S tdt|� ��z|\}}}W n( ttfk
rz tdt|� ��Y nX | jdkr�dd� |||fD �\}}}d| kr�d kr�n n.d| kr�d kr�n nd| kr�d ks�n td
t|� ��d |||f S ) a Return color string corresponding to args.
Argument may be a string or a tuple of three
numbers corresponding to actual colormode,
i.e. in the range 0<=n<=colormode.
If the argument doesn't represent a color,
an error is raised.
r� r r� zbad color string: %s�bad color arguments: %sr� c S s g | ]}t d | ��qS �g �o@��round�r{ r� r� r� r� r~ � s z*TurtleScreen._colorstr.<locals>.<listcomp>� �bad color sequence: %s�
#%02x%02x%02x)r� r� r� rO r� � TypeErrorr� r� )r� r9 r� �g�br� r� r� � _colorstrw s
FzTurtleScreen._colorstrc sx � � d�s� S t� �dkr.� fdd�dD �}n4t� �dkrV� fdd�� dd � D �}n td � ��t�fd
d �|D ��S ) Nr� r� c s" g | ]}t � ||d � d��qS )r� r� �r� rz ��cstrr� r� r~ � s z'TurtleScreen._color.<locals>.<listcomp>)r� r� r� r� c s g | ]}d t � | d � �qS )r� r� )r{ r7 r� r� r� r~ � s r� zbad colorstring: %sc 3 s | ]}|� j d V qdS )r� N)r� )r{ r� r� r� r� � <genexpr>� s z&TurtleScreen._color.<locals>.<genexpr>)r� r� r� r� )r� r� rB r� )r� r� r� �_color� s
zTurtleScreen._colorc C s8 |dkr| j S |dkr"t|�| _ n|dkr4t|�| _ dS )aq Return the colormode or set it to 1.0 or 255.
Optional argument:
cmode -- one of the values 1.0 or 255
r, g, b values of colortriples have to be in range 0..cmode.
Example (for a TurtleScreen instance named screen):
>>> screen.colormode()
1.0
>>> screen.colormode(255)
>>> pencolor(240,160,80)
Nr� r� )r� r� r� )r� Zcmoder� r� r� r � s zTurtleScreen.colormodec C s$ | j D ]}|�| j� |�� qdS )z�Reset all Turtles on the Screen to their initial state.
No argument.
Example (for a TurtleScreen instance named screen):
>>> screen.reset()
N)r� �_setmoder� r` )r� r� r� r� r� r` � s
zTurtleScreen.resetc C s | j S )z�Return the list of turtles on the screen.
Example (for a TurtleScreen instance named screen):
>>> screen.turtles()
[<turtle.Turtle object at 0x00E11FB0>]
)r� r� r� r� r� r+ � s zTurtleScreen.turtlesc G s4 |r| � |�}nd}| �|�}|dk r0| �|�}|S )a� Set or return backgroundcolor of the TurtleScreen.
Arguments (if given): a color string or three numbers
in the range 0..colormode or a 3-tuple of such numbers.
Example (for a TurtleScreen instance named screen):
>>> screen.bgcolor("orange")
>>> screen.bgcolor()
'orange'
>>> screen.bgcolor(0.5,0,0.5)
>>> screen.bgcolor()
'#800080'
N)r� rP r� �r� r r9 r� r� r� r � s
zTurtleScreen.bgcolorc C sB |dkr| j S t|�| _ d| _|dk r0t|�| _| j r>| �� dS )ae Turns turtle animation on/off and set delay for update drawings.
Optional arguments:
n -- nonnegative integer
delay -- nonnegative integer
If n is given, only each n-th regular screen update is really performed.
(Can be used to accelerate the drawing of complex graphics.)
Second arguments sets delay value (see RawTurtle.delay())
Example (for a TurtleScreen instance named screen):
>>> screen.tracer(8, 25)
>>> dist = 2
>>> for i in range(200):
... fd(dist)
... rt(90)
... dist += 2
Nr )r� r� r� r� r, )r� �nr r� r� r� r* � s
zTurtleScreen.tracerc C s |dkr| j S t|�| _ dS )z� Return or set the drawing delay in milliseconds.
Optional argument:
delay -- positive integer
Example (for a TurtleScreen instance named screen):
>>> screen.delay(15)
>>> screen.delay()
15
N)r� r� rL r� r� r� r � s zTurtleScreen.delayc C s< t jsdt _t�| jdkr8| jd7 _| j| j; _dS )zIncrement update counter.Tr r� N)r �_RUNNINGr� r� r� r� r� r� r� �
_incrementudc s
zTurtleScreen._incrementudcc C s< | j }d| _ | �� D ]}|�� |�� q|| _ | �� dS )z'Perform a TurtleScreen update.
TN)r� r+ � _update_data� _drawturtlerJ )r� �tracingrq r� r� r� r, s
zTurtleScreen.updatec C s | � � d S )z� Return the width of the turtle window.
Example (for a TurtleScreen instance named screen):
>>> screen.window_width()
640
r �r� r� r� r� r� r. s zTurtleScreen.window_widthc C s | � � d S )z� Return the height of the turtle window.
Example (for a TurtleScreen instance named screen):
>>> screen.window_height()
480
r� r� r� r� r� r� r- & s zTurtleScreen.window_heightc C s | j S )z�Return the Canvas of this TurtleScreen.
No argument.
Example (for a Screen instance named screen):
>>> cv = screen.getcanvas()
>>> cv
<turtle.ScrolledCanvas instance at 0x010742D8>
)r. r� r� r� r� r / s
zTurtleScreen.getcanvasc C s t | j�� �S )z�Return a list of names of all currently available turtle shapes.
No argument.
Example (for a TurtleScreen instance named screen):
>>> screen.getshapes()
['arrow', 'blank', 'circle', ... , 'turtle']
)�sortedr� r� r� r� r� r� r ; s zTurtleScreen.getshapesr� c C s | � |||� dS )a� Bind fun to mouse-click event on canvas.
Arguments:
fun -- a function with two arguments, the coordinates of the
clicked point on the canvas.
btn -- the number of the mouse-button, defaults to 1
Example (for a TurtleScreen instance named screen)
>>> screen.onclick(goto)
>>> # Subsequently clicking into the TurtleScreen will
>>> # make the turtle move to the clicked point.
>>> screen.onclick(None)
N)ri �r� r_ r� rd r� r� r� rR F s zTurtleScreen.onclickc C sF |dkr || j kr6| j �|� n|| j kr6| j �|� | �||� dS )am Bind fun to key-release event of key.
Arguments:
fun -- a function with no arguments
key -- a string: key (e.g. "a") or key-symbol (e.g. "space")
In order to be able to register key-events, TurtleScreen
must have focus. (See method listen.)
Example (for a TurtleScreen instance named screen):
>>> def f():
... fd(50)
... lt(60)
...
>>> screen.onkey(f, "Up")
>>> screen.listen()
Subsequently the turtle can be moved by repeatedly pressing
the up-arrow key, consequently drawing a hexagon
N)r� �remover> rm �r� r_ r� r� r� r� r W s
zTurtleScreen.onkeyc C sN |dkr || j kr>| j �|� n |dk r>|| j kr>| j �|� | �||� dS )a Bind fun to key-press event of key if key is given,
or to any key-press-event if no key is given.
Arguments:
fun -- a function with no arguments
key -- a string: key (e.g. "a") or key-symbol (e.g. "space")
In order to be able to register key-events, TurtleScreen
must have focus. (See method listen.)
Example (for a TurtleScreen instance named screen
and a Turtle instance named turtle):
>>> def f():
... fd(50)
... lt(60)
...
>>> screen.onkeypress(f, "Up")
>>> screen.listen()
Subsequently the turtle can be moved by repeatedly pressing
the up-arrow key, or by keeping pressed the up-arrow key.
consequently drawing a hexagon.
N)r� r� r> rn r� r� r� r� r u s
zTurtleScreen.onkeypressc C s | � � dS )a Set focus on TurtleScreen (in order to collect key-events)
No arguments.
Dummy arguments are provided in order
to be able to pass listen to the onclick method.
Example (for a TurtleScreen instance named screen):
>>> screen.listen()
N)ro )r� �xdummy�ydummyr� r� r� r � s
zTurtleScreen.listenr c C s | � ||� dS )a� Install a timer, which calls fun after t milliseconds.
Arguments:
fun -- a function with no arguments.
t -- a number >= 0
Example (for a TurtleScreen instance named screen):
>>> running = True
>>> def f():
... if running:
... fd(50)
... lt(60)
... screen.ontimer(f, 250)
...
>>> f() # makes the turtle marching around
>>> running = False
N)rr rp r� r� r� r" � s zTurtleScreen.ontimerc C sF |dkr| j S || jkr(| �|�| j|< | �| j| j| � || _ dS )aF Set background image or return name of current backgroundimage.
Optional argument:
picname -- a string, name of a gif-file or "nopic".
If picname is a filename, set the corresponding image as background.
If picname is "nopic", delete backgroundimage, if present.
If picname is None, return the filename of the current backgroundimage.
Example (for a TurtleScreen instance named screen):
>>> screen.bgpic()
'nopic'
>>> screen.bgpic("landscape.gif")
>>> screen.bgpic()
'landscape.gif'
N)r� r� r2 rx r� )r� Zpicnamer� r� r� r � s
zTurtleScreen.bgpicc C s | � |||�S )a� Resize the canvas the turtles are drawing on.
Optional arguments:
canvwidth -- positive integer, new width of canvas in pixels
canvheight -- positive integer, new height of canvas in pixels
bg -- colorstring or color-tuple, new backgroundcolor
If no arguments are given, return current (canvaswidth, canvasheight)
Do not alter the drawing window. To observe hidden parts of
the canvas use the scrollbars. (Can make visible those parts
of a drawing, which were outside the canvas before!)
Example (for a Turtle instance named turtle):
>>> turtle.screensize(2000,1500)
>>> # e.g. to search for an erroneously escaped turtle ;-)
)r� r r� r� r� r% � s zTurtleScreen.screensize)N)N)N)NN)N)r� N)N)NN)r )N)NNN)%r� r� r� r� r� r� r� r5 r r' r# r� r� r r` r+ r r* r r� r, r. r- r r rR r r r r" r r% r! r$ r r r r� r� r� r� r � sH �
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c @ sT e Zd ZdZedd�edd�edd�d�ZdZdZdZefdd �Z d
d � Z
dBd
d�Z dd� Z dCdd�Z
dd� Zdd� Zdd� Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zd$d%� Zd&d'� Zd(d)� ZdDd*d+�Zd,d-� Zd.d/� Zd0d1� Z dEd2d3�Z dFd4d5�Z d6d7� Z d8d9� Z dGd:d;�Z!dHd<d=�Z"dId>d?�Z#dJd@dA�Z$eZ%eZ&eZ'eZ(eZ)eZ*eZ+eZ,e Z-d S )K�
TNavigatorzRNavigation part of the RawTurtle.
Implements methods for turtle movement.
r� � )r� r� r� r� r r� c C sB | j | _| j| _|| _d | _| �� d | _| �|� t� | � d S r� )
�DEFAULT_ANGLEOFFSET� _angleOffset�DEFAULT_ANGLEORIENT� _angleOrientr� �
undobufferr: r� r� r` r� r� r� r� r� � s
zTNavigator.__init__c C s t dd�| _tj| j | _dS )zXreset turtle to its initial values
Will be overwritten by parent class
r� N)r � _positionr� �START_ORIENTATIONr� �_orientr� r� r� r� r` � s zTNavigator.resetNc C sL |dkr| j S |dkrdS || _ |dkr6d| _d| _n| jd | _d| _dS )z:Set turtle-mode to 'standard', 'world' or 'logo'.
Nr� )r� r� r r� � @r� )r� r r � _fullcircler� r� r� r� r� s zTNavigator._setmodec C s0 || _ d| | _| jdkr"d| _n
|d | _dS )z+Helper function for degrees() and radians()ih r� r r N)r �
_degreesPerAUr� r �r� Z
fullcircler� r� r� �_setDegreesPerAU s
zTNavigator._setDegreesPerAU� �v@c C s | � |� dS )a> Set angle measurement units to degrees.
Optional argument:
fullcircle - a number
Set angle measurement units, i. e. set number
of 'degrees' for a full circle. Default value is
360 degrees.
Example (for a Turtle instance named turtle):
>>> turtle.left(90)
>>> turtle.heading()
90
Change angle measurement unit to grad (also known as gon,
grade, or gradian and equals 1/100-th of the right angle.)
>>> turtle.degrees(400.0)
>>> turtle.heading()
100
N)r r
r� r� r� r: s zTNavigator.degreesc C s | � dtj � dS )a Set the angle measurement units to radians.
No arguments.
Example (for a Turtle instance named turtle):
>>> turtle.heading()
90
>>> turtle.radians()
>>> turtle.heading()
1.5707963267948966
r� N)r r� r� r� r� r� r� r^ 5 s zTNavigator.radiansc C s | j | j| }| �|� dS )z)move turtle forward by specified distanceN)r r �_goto)r� r; Zender� r� r� �_goC s zTNavigator._goc C s || j 9 }| j�|�| _dS )z=Turn turtle counterclockwise by specified angle if angle > 0.N)r r r� �r� r� r� r� r� �_rotateH s
zTNavigator._rotatec C s
|| _ dS )z move turtle to position end.N�r )r� �endr� r� r� r
M s zTNavigator._gotoc C s | � |� dS )a Move the turtle forward by the specified distance.
Aliases: forward | fd
Argument:
distance -- a number (integer or float)
Move the turtle forward by the specified distance, in the direction
the turtle is headed.
Example (for a Turtle instance named turtle):
>>> turtle.position()
(0.00, 0.00)
>>> turtle.forward(25)
>>> turtle.position()
(25.00,0.00)
>>> turtle.forward(-75)
>>> turtle.position()
(-50.00,0.00)
N�r �r� r; r� r� r� rC Q s zTNavigator.forwardc C s | � | � dS )a� Move the turtle backward by distance.
Aliases: back | backward | bk
Argument:
distance -- a number
Move the turtle backward by distance, opposite to the direction the
turtle is headed. Do not change the turtle's heading.
Example (for a Turtle instance named turtle):
>>> turtle.position()
(0.00, 0.00)
>>> turtle.backward(30)
>>> turtle.position()
(-30.00, 0.00)
Nr r r� r� r� r/ h s zTNavigator.backc C s | � | � dS )a� Turn turtle right by angle units.
Aliases: right | rt
Argument:
angle -- a number (integer or float)
Turn turtle right by angle units. (Units are by default degrees,
but can be set via the degrees() and radians() functions.)
Angle orientation depends on mode. (See this.)
Example (for a Turtle instance named turtle):
>>> turtle.heading()
22.0
>>> turtle.right(45)
>>> turtle.heading()
337.0
N�r r r� r� r� r_ | s zTNavigator.rightc C s | � |� dS )a� Turn turtle left by angle units.
Aliases: left | lt
Argument:
angle -- a number (integer or float)
Turn turtle left by angle units. (Units are by default degrees,
but can be set via the degrees() and radians() functions.)
Angle orientation depends on mode. (See this.)
Example (for a Turtle instance named turtle):
>>> turtle.heading()
22.0
>>> turtle.left(45)
>>> turtle.heading()
67.0
Nr r r� r� r� rP � s zTNavigator.leftc C s | j S )z�Return the turtle's current location (x,y), as a Vec2D-vector.
Aliases: pos | position
No arguments.
Example (for a Turtle instance named turtle):
>>> turtle.pos()
(0.00, 240.00)
r r� r� r� r� r[ � s zTNavigator.posc C s
| j d S )z� Return the turtle's x coordinate.
No arguments.
Example (for a Turtle instance named turtle):
>>> reset()
>>> turtle.left(60)
>>> turtle.forward(100)
>>> print turtle.xcor()
50.0
r r r� r� r� r� r| � s zTNavigator.xcorc C s
| j d S )a Return the turtle's y coordinate
---
No arguments.
Example (for a Turtle instance named turtle):
>>> reset()
>>> turtle.left(60)
>>> turtle.forward(100)
>>> print turtle.ycor()
86.6025403784
r� r r� r� r� r� r} � s zTNavigator.ycorc C s, |dkr| � t|� � n| � t||�� dS )at Move turtle to an absolute position.
Aliases: setpos | setposition | goto:
Arguments:
x -- a number or a pair/vector of numbers
y -- a number None
call: goto(x, y) # two coordinates
--or: goto((x, y)) # a pair (tuple) of coordinates
--or: goto(vec) # e.g. as returned by pos()
Move turtle to an absolute position. If the pen is down,
a line will be drawn. The turtle's orientation does not change.
Example (for a Turtle instance named turtle):
>>> tp = turtle.pos()
>>> tp
(0.00, 0.00)
>>> turtle.setpos(60,30)
>>> turtle.pos()
(60.00,30.00)
>>> turtle.setpos((20,80))
>>> turtle.pos()
(20.00,80.00)
>>> turtle.setpos(tp)
>>> turtle.pos()
(0.00,0.00)
N)r
r )r� r� r� r� r� r� rI � s zTNavigator.gotoc C s | � dd� | �d� dS )a$ Move turtle to the origin - coordinates (0,0).
No arguments.
Move turtle to the origin - coordinates (0,0) and set its
heading to its start-orientation (which depends on mode).
Example (for a Turtle instance named turtle):
>>> turtle.home()
r N)rI rd r� r� r� r� rL � s zTNavigator.homec C s | � t|| jd �� dS )a� Set the turtle's first coordinate to x
Argument:
x -- a number (integer or float)
Set the turtle's first coordinate to x, leave second coordinate
unchanged.
Example (for a Turtle instance named turtle):
>>> turtle.position()
(0.00, 240.00)
>>> turtle.setx(10)
>>> turtle.position()
(10.00, 240.00)
r� N�r
r r )r� r� r� r� r� ri s zTNavigator.setxc C s | � t| jd |�� dS )a� Set the turtle's second coordinate to y
Argument:
y -- a number (integer or float)
Set the turtle's first coordinate to x, second coordinate remains
unchanged.
Example (for a Turtle instance named turtle):
>>> turtle.position()
(0.00, 40.00)
>>> turtle.sety(-10)
>>> turtle.position()
(0.00, -10.00)
r Nr )r� r� r� r� r� rj s zTNavigator.setyc C sT |dk rt ||�}t|t �r"|}n$t|t�r6t |� }nt|t�rF|j}t|| j �S )a� Return the distance from the turtle to (x,y) in turtle step units.
Arguments:
x -- a number or a pair/vector of numbers or a turtle instance
y -- a number None None
call: distance(x, y) # two coordinates
--or: distance((x, y)) # a pair (tuple) of coordinates
--or: distance(vec) # e.g. as returned by pos()
--or: distance(mypen) # where mypen is another turtle
Example (for a Turtle instance named turtle):
>>> turtle.pos()
(0.00, 0.00)
>>> turtle.distance(30,40)
50.0
>>> pen = Turtle()
>>> pen.forward(77)
>>> turtle.distance(pen)
77.0
N)r r� r� r� r �abs)r� r� r� r[ r� r� r� r; % s
zTNavigator.distancec C s� |dk rt ||�}t|t �r"|}n$t|t�r6t |� }nt|t�rF|j}|| j \}}tt�||�d tj d�d }|| j }| j
| j | | j S )aC Return the angle of the line from the turtle's position to (x, y).
Arguments:
x -- a number or a pair/vector of numbers or a turtle instance
y -- a number None None
call: distance(x, y) # two coordinates
--or: distance((x, y)) # a pair (tuple) of coordinates
--or: distance(vec) # e.g. as returned by pos()
--or: distance(mypen) # where mypen is another turtle
Return the angle, between the line from turtle-position to position
specified by x, y and the turtle's start orientation. (Depends on
modes - "standard" or "logo")
Example (for a Turtle instance named turtle):
>>> turtle.pos()
(10.00, 10.00)
>>> turtle.towards(0,0)
225.0
Nr� r� r )
r r� r� r� r r� r� �atan2r� r r r r )r� r� r� r[ �resultr� r� r� ru E s
zTNavigator.towardsc C sJ | j \}}tt�||�d tj d�d }|| j }| j| j| | j S )z� Return the turtle's current heading.
No arguments.
Example (for a Turtle instance named turtle):
>>> turtle.left(67)
>>> turtle.heading()
67.0
r� r� r ) r r� r� r r� r r r r )r� r� r� r r� r� r� rJ h s
zTNavigator.headingc C s> || � � | j }| j}||d | |d }| �|� dS )a� Set the orientation of the turtle to to_angle.
Aliases: setheading | seth
Argument:
to_angle -- a number (integer or float)
Set the orientation of the turtle to to_angle.
Here are some common directions in degrees:
standard - mode: logo-mode:
-------------------|--------------------
0 - east 0 - north
90 - north 90 - east
180 - west 180 - south
270 - south 270 - west
Example (for a Turtle instance named turtle):
>>> turtle.setheading(90)
>>> turtle.heading()
90
� @N)rJ r r r )r� Zto_angler� Zfullr� r� r� rd w s zTNavigator.setheadingc C sp | j r | j �dg� d| j _| �� }|dkr2| j}|dkrjt|�| j }dttdt|�d d�| � }d| | }d | }d
| t� |tj
d | j � }|d k r�| | | }}}| � � } | �
� }
|d kr�| � d d � n
| �d � | �|� t|�D ].} | �|� | �|� | �d � | �|� �q | �| � |d k�rR| � | |
� | �|� | j �rld
| j _dS )a� Draw a circle with given radius.
Arguments:
radius -- a number
extent (optional) -- a number
steps (optional) -- an integer
Draw a circle with given radius. The center is radius units left
of the turtle; extent - an angle - determines which part of the
circle is drawn. If extent is not given, draw the entire circle.
If extent is not a full circle, one endpoint of the arc is the
current pen position. Draw the arc in counterclockwise direction
if radius is positive, otherwise in clockwise direction. Finally
the direction of the turtle is changed by the amount of extent.
As the circle is approximated by an inscribed regular polygon,
steps determines the number of steps to use. If not given,
it will be calculated automatically. Maybe used to draw regular
polygons.
call: circle(radius) # full circle
--or: circle(radius, extent) # arc
--or: circle(radius, extent, steps)
--or: circle(radius, steps=6) # 6-sided polygon
Example (for a Turtle instance named turtle):
>>> turtle.circle(50)
>>> turtle.circle(120, 180) # semicircle
�seqTNr� � g @g �M@r� r� r r� r F)r r� r� rp r r r� �minr� r� r� r �_tracerrM r r r ) r� �radiusZextent�stepsrp Zfracr6 Zw2�lZtrZdlr| r� r� r� r4 � s> " "
zTNavigator.circlec C s dS �z/dummy method - to be overwritten by child classNr� )r� r� r� r� r� rp � s zTNavigator.speedc C s dS r" r� )r� �ar� r� r� r� r � s zTNavigator._tracerc C s dS r" r� )r� r� r� r� r� rM � s zTNavigator._delay)N)r )N)N)N)NN)r )NN)N).r� r� r� r� r r Z DEFAULT_MODEr� r r� r` r� r r: r^ r r r
rC r/ r_ rP r[ r| r} rI rL ri rj r; ru rJ rd r4 rp r rM r@ r3 r0 rb rQ r\ re rf rc r� r� r� r� r� � sZ �
#
#
A
r� c @ s� e Zd ZdZed fdd�Zed ed fdd�Zd.d
d �Zd/d d
�Zdd� Z dd� Z
dd� Z d0dd�Z dd� Z
dd� Zdd� Zd d � Zd d � Zd d!� Zd1d"d#�Zd2d%d&�Zd3d(d)�Zd*d+� Zd,d-� ZeZe Ze Ze
Ze
Z eZ eZ d S )4�TPenzFDrawing part of the RawTurtle.
Implements drawing properties.
ra c C s || _ d | _t�| � d S r� )� _resizemoder r$ �_reset)r� ra r� r� r� r� � s z
TPen.__init__rW rA c C sF d| _ d| _|| _|| _d| _d| _d| _d| _d| _d| _ d| _
d S )Nr� Tr� )r� r� r� )r� r� r� r� ) �_pensize�_shown� _pencolor�
_fillcolor�_drawing�_speed�_stretchfactor� _shearfactor�_tilt� _shapetrafo�
_outlinewidth)r� rW rA r� r� r� r& � s z TPen._resetNc C s. |dkr| j S |�� }|dkr*| j|d� dS )az Set resizemode to one of the values: "auto", "user", "noresize".
(Optional) Argument:
rmode -- one of the strings "auto", "user", "noresize"
Different resizemodes have the following effects:
- "auto" adapts the appearance of the turtle
corresponding to the value of pensize.
- "user" adapts the appearance of the turtle according to the
values of stretchfactor and outlinewidth (outline),
which are set by shapesize()
- "noresize" no adaption of the turtle's appearance takes place.
If no argument is given, return current resizemode.
resizemode("user") is called by a call of shapesize with arguments.
Examples (for a Turtle instance named turtle):
>>> turtle.resizemode("noresize")
>>> turtle.resizemode()
'noresize'
N)�auto�userr� �ra )r% r� rV )r� Zrmoder� r� r� ra � s
zTPen.resizemodec C s |dkr| j S | j|d� dS )a! Set or return the line thickness.
Aliases: pensize | width
Argument:
width -- positive number
Set the line thickness to width or return it. If resizemode is set
to "auto" and turtleshape is a polygon, that polygon is drawn with
the same line thickness. If no argument is given, current pensize
is returned.
Example (for a Turtle instance named turtle):
>>> turtle.pensize()
1
>>> turtle.pensize(10) # from here on lines of width 10 are drawn
N)rY )r' rV )r� rz r� r� r� rY s z TPen.pensizec C s | j s
dS | jdd� dS )z�Pull the pen up -- no drawing when moving.
Aliases: penup | pu | up
No argument
Example (for a Turtle instance named turtle):
>>> turtle.penup()
NF�rX �r+ rV r� r� r� r� rZ 0 s
z
TPen.penupc C s | j r
dS | jdd� dS )z�Pull the pen down -- drawing when moving.
Aliases: pendown | pd | down
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.pendown()
NTr5 r6 r� r� r� r� rX > s
z TPen.pendownc C s | j S )a Return True if pen is down, False if it's up.
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.penup()
>>> turtle.isdown()
False
>>> turtle.pendown()
>>> turtle.isdown()
True
)r+ r� r� r� r� rN L s
z TPen.isdownc C sj dddddd�}|dkr | j S ||kr0|| }n*d| k rDd k rVn ntt|��}nd}| j|d
� dS ) a� Return or set the turtle's speed.
Optional argument:
speed -- an integer in the range 0..10 or a speedstring (see below)
Set the turtle's speed to an integer value in the range 0 .. 10.
If no argument is given: return current speed.
If input is a number greater than 10 or smaller than 0.5,
speed is set to 0.
Speedstrings are mapped to speedvalues in the following way:
'fastest' : 0
'fast' : 10
'normal' : 6
'slow' : 3
'slowest' : 1
speeds from 1 to 10 enforce increasingly faster animation of
line drawing and turtle turning.
Attention:
speed = 0 : *no* animation takes place. forward/back makes turtle jump
and likewise left/right make the turtle turn instantly.
Example (for a Turtle instance named turtle):
>>> turtle.speed(3)
r r� r� r� r� )ZfastestZfast�normalZslowZslowestNr� g %@)rp )r, r� r� rV )r� rp Zspeedsr� r� r� rp [ s
z
TPen.speedc G s� |rht |�}|dkr"|d }}n"|dkr4|\}}n|dkrD| }}| �|�}| �|�}| j||d� n| �| j�| �| j�fS dS )a� Return or set the pencolor and fillcolor.
Arguments:
Several input formats are allowed.
They use 0, 1, 2, or 3 arguments as follows:
color()
Return the current pencolor and the current fillcolor
as a pair of color specification strings as are returned
by pencolor and fillcolor.
color(colorstring), color((r,g,b)), color(r,g,b)
inputs as in pencolor, set both, fillcolor and pencolor,
to the given value.
color(colorstring1, colorstring2),
color((r1,g1,b1), (r2,g2,b2))
equivalent to pencolor(colorstring1) and fillcolor(colorstring2)
and analogously, if the other input format is used.
If turtleshape is a polygon, outline and interior of that polygon
is drawn with the newly set colors.
For more info see: pencolor, fillcolor
Example (for a Turtle instance named turtle):
>>> turtle.color('red', 'green')
>>> turtle.color()
('red', 'green')
>>> colormode(255)
>>> color((40, 80, 120), (160, 200, 240))
>>> color()
('#285078', '#a0c8f0')
r� r r� r� )rW rA N)r� r� rV r� r) r* )r� r r! ZpcolorZfcolorr� r� r� r9 � s
z
TPen.colorc G s: |r*| � |�}|| jkr dS | j|d� n | �| j�S dS )aZ Return or set the pencolor.
Arguments:
Four input formats are allowed:
- pencolor()
Return the current pencolor as color specification string,
possibly in hex-number format (see example).
May be used as input to another color/pencolor/fillcolor call.
- pencolor(colorstring)
s is a Tk color specification string, such as "red" or "yellow"
- pencolor((r, g, b))
*a tuple* of r, g, and b, which represent, an RGB color,
and each of r, g, and b are in the range 0..colormode,
where colormode is either 1.0 or 255
- pencolor(r, g, b)
r, g, and b represent an RGB color, and each of r, g, and b
are in the range 0..colormode
If turtleshape is a polygon, the outline of that polygon is drawn
with the newly set pencolor.
Example (for a Turtle instance named turtle):
>>> turtle.pencolor('brown')
>>> tup = (0.2, 0.8, 0.55)
>>> turtle.pencolor(tup)
>>> turtle.pencolor()
'#33cc8c'
N)rW )r� r) rV r� r� r� r� r� rW � s
z
TPen.pencolorc G s: |r*| � |�}|| jkr dS | j|d� n | �| j�S dS )a] Return or set the fillcolor.
Arguments:
Four input formats are allowed:
- fillcolor()
Return the current fillcolor as color specification string,
possibly in hex-number format (see example).
May be used as input to another color/pencolor/fillcolor call.
- fillcolor(colorstring)
s is a Tk color specification string, such as "red" or "yellow"
- fillcolor((r, g, b))
*a tuple* of r, g, and b, which represent, an RGB color,
and each of r, g, and b are in the range 0..colormode,
where colormode is either 1.0 or 255
- fillcolor(r, g, b)
r, g, and b represent an RGB color, and each of r, g, and b
are in the range 0..colormode
If turtleshape is a polygon, the interior of that polygon is drawn
with the newly set fillcolor.
Example (for a Turtle instance named turtle):
>>> turtle.fillcolor('violet')
>>> col = turtle.pencolor()
>>> turtle.fillcolor(col)
>>> turtle.fillcolor(0, .5, 0)
N)rA )r� r* rV r� r� r� r� r� rA � s
zTPen.fillcolorc C s | j dd� dS )z�Makes the turtle visible.
Aliases: showturtle | st
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.hideturtle()
>>> turtle.showturtle()
T��shownN�rV r� r� r� r� ro � s zTPen.showturtlec C s | j dd� dS )aY Makes the turtle invisible.
Aliases: hideturtle | ht
No argument.
It's a good idea to do this while you're in the
middle of a complicated drawing, because hiding
the turtle speeds up the drawing observably.
Example (for a Turtle instance named turtle):
>>> turtle.hideturtle()
Fr8 Nr: r� r� r� r� rK s zTPen.hideturtlec C s | j S )z�Return True if the Turtle is shown, False if it's hidden.
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.hideturtle()
>>> print turtle.isvisible():
False
)r( r� r� r� r� rO s
zTPen.isvisiblec K s� | j | j| j| j| j| j| j| j| j| j | j
d� }|s>|s>|S t |t �rN|}ni }|�
|� i }|D ]}|| ||< qd| jr�| j�d|f� d}d|kr�| j|d kr�d}d|kr�t |d t�r�| �|d f�|d< | j|d kr�d}d|k�r| j|d k�rd}|�r| �� d|k�r&|d | _d|k�r:|d | _d|k�rN|d | _d|k�r�t |d t��r|| �|d f�|d< |d | _d |k�r�|d | _d
|k�r�|d
| _d |k�r�|d }t |ttf��r�||f}|| _d |k�r�|d | _d
|k�r|d
| _ d|k�r|d | _ d|k�r.|d | _
d |k�sLd|k�sLd |k�r�| j\} }
| j} t�| j
�t�| j
� } }
| |
|
| |
| | | |
|
| | f| _| �� dS )aL Return or set the pen's attributes.
Arguments:
pen -- a dictionary with some or all of the below listed keys.
**pendict -- one or more keyword-arguments with the below
listed keys as keywords.
Return or set the pen's attributes in a 'pen-dictionary'
with the following key/value pairs:
"shown" : True/False
"pendown" : True/False
"pencolor" : color-string or color-tuple
"fillcolor" : color-string or color-tuple
"pensize" : positive number
"speed" : number in range 0..10
"resizemode" : "auto" or "user" or "noresize"
"stretchfactor": (positive number, positive number)
"shearfactor": number
"outline" : positive number
"tilt" : number
This dictionary can be used as argument for a subsequent
pen()-call to restore the former pen-state. Moreover one
or more of these attributes can be provided as keyword-arguments.
This can be used to set several pen attributes in one statement.
Examples (for a Turtle instance named turtle):
>>> turtle.pen(fillcolor="black", pencolor="red", pensize=10)
>>> turtle.pen()
{'pensize': 10, 'shown': True, 'resizemode': 'auto', 'outline': 1,
'pencolor': 'red', 'pendown': True, 'fillcolor': 'black',
'stretchfactor': (1,1), 'speed': 3, 'shearfactor': 0.0}
>>> penstate=turtle.pen()
>>> turtle.color("yellow","")
>>> turtle.penup()
>>> turtle.pen()
{'pensize': 10, 'shown': True, 'resizemode': 'auto', 'outline': 1,
'pencolor': 'yellow', 'pendown': False, 'fillcolor': '',
'stretchfactor': (1,1), 'speed': 3, 'shearfactor': 0.0}
>>> p.pen(penstate, fillcolor="green")
>>> p.pen()
{'pensize': 10, 'shown': True, 'resizemode': 'auto', 'outline': 1,
'pencolor': 'red', 'pendown': True, 'fillcolor': 'green',
'stretchfactor': (1,1), 'speed': 3, 'shearfactor': 0.0}
) r9 rX rW rA rY rp ra �
stretchfactorrn r9 rs rV FrX TrW rY rA rp ra r; rn r9 r9 rs N)r( r+ r) r* r' r, r% r- r. r1 r/ r� �dictr, r r� r� r� �_newLiner� r� r� r� r� r0 rJ )r� rV ZpendictZ_pd�pZ_p_bufr� ZnewLineZsfZscxZscyZshf�sa�car� r� r� rV ! s� /�
�zTPen.penTc C s dS r" r� �r� ZusePosr� r� r� r= � s z
TPen._newLineFc C s dS r" r� )r� r� Zforcedr� r� r� rJ � s z TPen._updatec C s dS r" r� r r� r� r� r� � s z TPen._colorc C s dS r" r� r r� r� r� r� � s zTPen._colorstr)N)N)N)N)T)TF) r� r� r� r� r� r� r& ra rY rZ rX rN rp r9 rW rA ro rK rO rV r= rJ r� r� rz ry r] rU r= rq rM r� r� r� r� r$ � s: �
&.%$
r$ c @ s e Zd ZdZdd� Zdd� ZdS )� _TurtleImagez6Helper class: Datatype to store Turtle attributes
c C s || _ d | _| �|� d S r� )r� ry � _setshape)r� r� �
shapeIndexr� r� r� r� � s z_TurtleImage.__init__c s� | j � || _| jd kr*� j| jkr2n nd S | jd krP� j| jkrXn nd S | jdkrp� �| j� n | jdkr�| jD ]}� �|� q�� j| j| _| jdkr�� �� | _nF| jdkrԈ �� jd j�| _n&| jdkr�� fdd�� j| jD �| _d S )Nr� rt )rt r� r� r/ c s g | ] }� � � �qS r� �r: �r{ rH �r� r� r� r~ � s z*_TurtleImage._setshape.<locals>.<listcomp>) r� rD ry r� rI �_itemr: ru r� )r� rD rH r� rG r� rC � s( ""
�z_TurtleImage._setshapeN)r� r� r� r� r� rC r� r� r� r� rB � s rB c @ s� e Zd ZdZg Zded ed ed fdd�Zdd � Zd
d � Zd d
� Z dd� Z
dd� Z dd� Z dd� Z
dmdd�Zdd� Zdd� Zd d � Zd d � Zdnd d!�Zdod"d#�Zdpd$d%�Zd&d'� Zdqd(d)�Zd*d+� Zdrd,d-�Zd.d/� Zd0d1� Zdsd3d4�Z d5d6� Z d7d8� Z d9d:� Z d;d<� Z dtd=d>�Z!d?d@� Z"dAdB� Z#dCdD� Z$dudFdG�Z%dHdI� Z&dJdK� Z'dLdM� Z(dvdNdO�Z)dPdQ� Z*dwdTdU�Z+dVdW� Z,dXdY� Z-dZd[� Z.d\d]� Z/d^d_� Z0e0Z1dxd`da�Z2dydcdd�Z3dzdedf�Z4d{dgdh�Z5didj� Z6dkdl� Z7eZ8dS )|r
zvAnimation part of the RawTurtle.
Puts RawTurtle upon a TurtleScreen and provides tools for
its animation.
Nrk r� r� c C s4 t |t�r|| _n|t |t�r:|tjkr2tj�|� || _nTt |ttf�r�tjD ]}|j |krN|| _ q�qNt|�| _tj�| j� n t
d| ��| j}t � | |�
� � t� | � |j�| � |�� | _t||�| _d | _d| _d | _| _|| _d| _|�� | _| jg| _ | jg| _ g | _ || _ t |�| _!| �"� d S )Nzbad canvas argument %sF)#r� �_Screenr� r r
�screensr> r r� r. r� r� r� r r$ r� rD �drawingLineItemrB r� �_poly�
_creatingPoly� _fillitem� _fillpathr( �_hidden_from_screen�currentLineItemr � currentLiner� �
stampItems�_undobuffersizer� r rJ )r� Zcanvasrk r� r� r� r� r� r� r� � s@
zRawTurtle.__init__c C s0 t �| � t�| � | �� | �� | �� dS )a� Delete the turtle's drawings and restore its default values.
No argument.
Delete the turtle's drawings from the screen, re-center the turtle
and set variables to the default values.
Example (for a Turtle instance named turtle):
>>> turtle.position()
(0.00,-22.00)
>>> turtle.heading()
100.0
>>> turtle.reset()
>>> turtle.position()
(0.00,0.00)
>>> turtle.heading()
0.0
N)r� r` r$ r& �_clearr� rJ r� r� r� r� r`
s
zRawTurtle.resetc C s& |dks|dkrd| _ n
t|�| _ dS )a� Set or disable undobuffer.
Argument:
size -- an integer or None
If size is an integer an empty undobuffer of given size is installed.
Size gives the maximum number of turtle-actions that can be undone
by the undo() function.
If size is None, no undobuffer is present.
Example (for a Turtle instance named turtle):
>>> turtle.setundobuffer(42)
Nr )r r� )r� �sizer� r� r� rh
s zRawTurtle.setundobufferc C s | j dkrdS | j �� S )z�Return count of entries in the undobuffer.
No argument.
Example (for a Turtle instance named turtle):
>>> while undobufferentries():
... undo()
Nr )r r� r� r� r� r� rx ,
s
zRawTurtle.undobufferentriesc C sl d | _ | _| jD ]}| j�|� q| j�� | _g | _| jrJ| j� | j
� | jg| _| � � | � | j
� dS )z Delete all of pen's drawingsN)rN rO r� r� rI rD rQ rR r+ r> r r7 rh rT rG r� r� r� rU 9
s
zRawTurtle._clearc C s | � � | �� dS )ag Delete the turtle's drawings from the screen. Do not move turtle.
No arguments.
Delete the turtle's drawings from the screen. Do not move turtle.
State and position of the turtle as well as drawings of other
turtles are not affected.
Examples (for a Turtle instance named turtle):
>>> turtle.clear()
N)rU rJ r� r� r� r� r5 G
s zRawTurtle.clearc C sF | j �� | j jdkrd S t| j�dkrB| j �| j| j| j| j� d S r� ) r� r� r� r� rR rE rQ r) r' r� r� r� r� r� V
s
�zRawTurtle._update_datac C sx | j }|jdkrdS |jdkrD| �� | �� |�� |�|j� n0| �� |jdkrt|�� D ] }|�� q^|�� dS )z&Perform a Turtle-data update.
r Nr� ) r� r� r� r� rJ rM r� r� r+ )r� r� rq r� r� r� rJ ^
s
zRawTurtle._updatec C s | j �||�S )am Turns turtle animation on/off and set delay for update drawings.
Optional arguments:
n -- nonnegative integer
delay -- nonnegative integer
If n is given, only each n-th regular screen update is really performed.
(Can be used to accelerate the drawing of complex graphics.)
Second arguments sets delay value (see RawTurtle.delay())
Example (for a Turtle instance named turtle):
>>> turtle.tracer(8, 25)
>>> dist = 2
>>> for i in range(200):
... turtle.fd(dist)
... turtle.rt(90)
... dist += 2
)r� r* )r� �flagr r� r� r� r p
s zRawTurtle._tracerc C s | j �|�S r� )r� r� r r� r� r� r� �
s zRawTurtle._colorc C s | j �|�S r� )r� r� r r� r� r� r� �
s zRawTurtle._colorstrc C s� t |t�r|S z|\}}}W n( ttfk
rD tdt|� ��Y nX | jjdkrldd� |||fD �\}}}d| kr�dkr�n n.d| kr�dkr�n nd| kr�dks�n tdt|� ��d|||f S ) z,Convert colortriples to hexstrings.
r� r� c S s g | ]}t d | ��qS r� r� r� r� r� r� r~ �
s z!RawTurtle._cc.<locals>.<listcomp>r r� r� r� )r� r� r� r� r� r� r� )r� r r� r� r� r� r� r� �_cc�
s
Fz
RawTurtle._ccc s� | j � | �| j� | j}d| _ d| _t| �}� | _ || _� |_ t� | jj�|_� j�|� � j | jj j
}|dkr�� � � |j_ nJ|dkr�� �
� j d j�|j_ n*|dkrʇ fdd�� j | jj jD �|j_ � �� |_|�� |S )a Create and return a clone of the turtle.
No argument.
Create and return a clone of the turtle with same position, heading
and turtle properties.
Example (for a Turtle instance named mick):
mick = Turtle()
joe = mick.clone()
Nr� rt r/ r� c s g | ] }� � � �qS r� rE rF rG r� r� r~ �
s z#RawTurtle.clone.<locals>.<listcomp>)r� r= r+ r� r rB rD r� r> r� ry r: rH ru r� rD rQ rJ )r� r� �q�ttyper� rG r� r8 �
s.
�
zRawTurtle.clonec C sB |dkr| j jS || j�� kr*td| ��| j �|� | �� dS )a� Set turtle shape to shape with given name / return current shapename.
Optional argument:
name -- a string, which is a valid shapename
Set turtle shape to shape with given name or, if name is not given,
return name of current shape.
Shape with name must exist in the TurtleScreen's shape dictionary.
Initially there are the following polygon shapes:
'arrow', 'turtle', 'circle', 'square', 'triangle', 'classic'.
To learn about how to deal with shapes see Screen-method register_shape.
Example (for a Turtle instance named turtle):
>>> turtle.shape()
'arrow'
>>> turtle.shape("turtle")
>>> turtle.shape()
'turtle'
NzThere is no shape named %s)r� rD r� r r� rC rJ )r� r� r� r� r� rk �
s zRawTurtle.shapec C s� || kr | kr dkr8n n| j \}}||| jfS |dksH|dkrPtd��|dk rt|dkrj||f}q�||f}n |dk r�| j d |f}n| j }|dkr�| j}| jd||d� dS )aO Set/return turtle's stretchfactors/outline. Set resizemode to "user".
Optional arguments:
stretch_wid : positive number
stretch_len : positive number
outline : positive number
Return or set the pen's attributes x/y-stretchfactors and/or outline.
Set resizemode to "user".
If and only if resizemode is set to "user", the turtle will be displayed
stretched according to its stretchfactors:
stretch_wid is stretchfactor perpendicular to orientation
stretch_len is stretchfactor in direction of turtles orientation.
outline determines the width of the shapes's outline.
Examples (for a Turtle instance named turtle):
>>> turtle.resizemode("user")
>>> turtle.shapesize(5, 5, 12)
>>> turtle.shapesize(outline=8)
Nr z(stretch_wid/stretch_len must not be zeror3 )ra r; r9 )r- r1 r� rV )r� Z stretch_widZ stretch_lenr9 r; r� r� r� rl �
s$ "
�zRawTurtle.shapesizec C s |dkr| j S | jd|d� dS )a� Set or return the current shearfactor.
Optional argument: shear -- number, tangent of the shear angle
Shear the turtleshape according to the given shearfactor shear,
which is the tangent of the shear angle. DO NOT change the
turtle's heading (direction of movement).
If shear is not given: return the current shearfactor, i. e. the
tangent of the shear angle, by which lines parallel to the
heading of the turtle are sheared.
Examples (for a Turtle instance named turtle):
>>> turtle.shape("circle")
>>> turtle.shapesize(5,2)
>>> turtle.shearfactor(0.5)
>>> turtle.shearfactor()
>>> 0.5
Nr3 )ra rn )r. rV )r� Zshearr� r� r� rn s zRawTurtle.shearfactorc C s< | | j | j }|tj d dtj }| jd|d� dS )aI Rotate the turtleshape to point in the specified direction
Argument: angle -- number
Rotate the turtleshape to point in the direction specified by angle,
regardless of its current tilt-angle. DO NOT change the turtle's
heading (direction of movement).
Examples (for a Turtle instance named turtle):
>>> turtle.shape("circle")
>>> turtle.shapesize(5,2)
>>> turtle.settiltangle(45)
>>> stamp()
>>> turtle.fd(50)
>>> turtle.settiltangle(-45)
>>> stamp()
>>> turtle.fd(50)
r� r� r3 )ra rs N)r r r� r� rV �r� r� rs r� r� r� rg s zRawTurtle.settiltanglec C s> |dkr0| j dtj | j }|| j | j S | �|� dS )a� Set or return the current tilt-angle.
Optional argument: angle -- number
Rotate the turtleshape to point in the direction specified by angle,
regardless of its current tilt-angle. DO NOT change the turtle's
heading (direction of movement).
If angle is not given: return the current tilt-angle, i. e. the angle
between the orientation of the turtleshape and the heading of the
turtle (its direction of movement).
Deprecated since Python 3.1
Examples (for a Turtle instance named turtle):
>>> turtle.shape("circle")
>>> turtle.shapesize(5,2)
>>> turtle.tilt(45)
>>> turtle.tiltangle()
Nr� )r/ r� r� r r r rg r[ r� r� r� rt 4 s zRawTurtle.tiltanglec C s | � || �� � dS )a� Rotate the turtleshape by angle.
Argument:
angle - a number
Rotate the turtleshape by angle from its current tilt-angle,
but do NOT change the turtle's heading (direction of movement).
Examples (for a Turtle instance named turtle):
>>> turtle.shape("circle")
>>> turtle.shapesize(5,2)
>>> turtle.tilt(30)
>>> turtle.fd(50)
>>> turtle.tilt(30)
>>> turtle.fd(50)
N)rg rt r r� r� r� rs N s zRawTurtle.tiltc C s6 || kr(| kr(| kr(dkr2n n| j S | j \}}}}|dk rL|}|dk rX|}|dk rd|}|dk rp|}|| || dkr�td��||||f| _ t�| |�dtj } t�| �t�| � }
} | | |
| | | |
| |
| | | |
| | | f\} }
}}| |f| _|
| | _| | _ | j
dd� dS )a� Set or return the current transformation matrix of the turtle shape.
Optional arguments: t11, t12, t21, t22 -- numbers.
If none of the matrix elements are given, return the transformation
matrix.
Otherwise set the given elements and transform the turtleshape
according to the matrix consisting of first row t11, t12 and
second row t21, 22.
Modify stretchfactor, shearfactor and tiltangle according to the
given matrix.
Examples (for a Turtle instance named turtle):
>>> turtle.shape("square")
>>> turtle.shapesize(4,2)
>>> turtle.shearfactor(-0.5)
>>> turtle.shapetransform()
(4.0, -1.0, -0.0, 2.0)
Nr z0Bad shape transform matrix: must not be singularr� r3 r4 ) r0 r� r� r r� r� r� r- r. r/ rV )r� �t11�t12�t21�t22Zm11Zm12Zm21Zm22Zalfar? r@ Za11Za12Za21Za22r� r� r� rm a s0 , �
zRawTurtle.shapetransformc s^ | j �| j\��| j\� �t� ��j �j �}dt|� | \� �� ����fdd�|D �S )zlComputes transformed polygon shapes from a shape
according to current position and heading.
r� c sF g | ]>\}}��| � | �j �� | �| �j f�qS r� )r4 r5 �r{ r� r� �Ze0Ze1Zp0Zp1r� r� r� r~ � s �z(RawTurtle._polytrafo.<locals>.<listcomp>)r� r r r r5 r4 r )r� r� �er� ra r� �
_polytrafo� s
�zRawTurtle._polytrafoc C s2 | j j| jj }|jdkr.| �|j|jdk�S dS )a@ Return the current shape polygon as tuple of coordinate pairs.
No argument.
Examples (for a Turtle instance named turtle):
>>> turtle.shape("square")
>>> turtle.shapetransform(4, -1, 0, 2)
>>> turtle.get_shapepoly()
((50, -20), (30, 20), (-50, 20), (-30, -20))
r� r� N)r� r� r� rD ry �
_getshapepolyr� )r� rk r� r� r� rG � s
zRawTurtle.get_shapepolyFc sx | j dks|r | j\� ���n>| j dkrNtd| jd �}|dd|f\� ���n| j dkr\|S t� ���fdd�|D ��S ) z`Calculate transformed shape polygon according to resizemode
and shapetransform.
r3 r2 r� g @r r� c 3 s2 | ]*\}}� | �| �| �| fV qd S r� r� r` �r\ r] r^ r_ r� r� r� � s z*RawTurtle._getshapepoly.<locals>.<genexpr>)r% r0 �maxr' r� )r� r� r� r! r� re r� rd � s
zRawTurtle._getshapepolyc C s� | j }|j| jj }|j}| jj}| j�r*|jdk�r*|jdk�r*d| _ |j
}|dkr�| j dkrfd}n| j dkrx| j }n| j
}| �| �|��}| j| j }}|j|||||dd� nt|d kr�|�|| j|� nZ|d
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}}| �| �|
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� nJ|d k�rv|�|| j|jd j
� n&|d
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d
� �q�d| _ d S )zpManages the correct rendering of the turtle with respect to
its shape, resizemode, stretch and tilt etc.r Fr� r� r� r2 T�r" r9 rz rA rt r� N�r� r� r� r� r/ )r� r� r� rD ry rH r( r� r� rP r� r% r' r1 rc rd r* r) rC rw r �ziprX ) r� r� rk rZ Ztitem�tshaper6 �fc�ocrH r� r� r� r� r� � sR
�
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zRawTurtle._drawturtlec C sT | j }|j| jj }|j}|j}|dkr�|�� }| jdkr@d}n| jdkrR| j}n| j }| �
| � |��}| j | j
}}|j|||||dd� n�|dkr�|�d�}|�|| j|� n�|d k�r4g }|D ]} |�� }
|�|
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\} }}| �
| � | d��} |j|
| | �|�| �|�| j dd� q�| j�|� | j�d
|f� |S ) a� Stamp a copy of the turtleshape onto the canvas and return its id.
No argument.
Stamp a copy of the turtle shape onto the canvas at the current
turtle position. Return a stamp_id for that stamp, which can be
used to delete it by calling clearstamp(stamp_id).
Example (for a Turtle instance named turtle):
>>> turtle.color("blue")
>>> turtle.stamp()
13
>>> turtle.fd(50)
r� r� r� r2 Trg rt r� r� rr )r� r� r� rD ry r� r: r% r' r1 rc rd r* r) rC ru rw r r> r� ri rX rS r r� ) r� r� rk rZ rj �stitemr6 rk rl ZelementrH r� r� r� r� rr � sH
�
� zRawTurtle.stampc C s� || j krDt|t�r,|D ]}| j�|� qn | j�|� | j �|� d|f}| j}||jkr`dS |j�|�}|j�|� ||j kr�|j d |j
|_ |j� |j d |j
dg� dS )z9does the work for clearstamp() and clearstamps()
rr Nr� ) rS r� r� r� rI r� r r� �indexr� r� �insert)r� �stampidZsubitemrH Zbufrn r� r� r� � _clearstamp s
zRawTurtle._clearstampc C s | � |� | �� dS )aD Delete stamp with given stampid
Argument:
stampid - an integer, must be return value of previous stamp() call.
Example (for a Turtle instance named turtle):
>>> turtle.color("blue")
>>> astamp = turtle.stamp()
>>> turtle.fd(50)
>>> turtle.clearstamp(astamp)
N)rq rJ )r� rp r� r� r� r6 s
zRawTurtle.clearstampc C s^ |dkr| j dd� }n&|dkr0| j d|� }n| j |d� }|D ]}| �|� qB| �� dS )a� Delete all or first/last n of turtle's stamps.
Optional argument:
n -- an integer
If n is None, delete all of pen's stamps,
else if n > 0 delete first n stamps
else if n < 0 delete last n stamps.
Example (for a Turtle instance named turtle):
>>> for i in range(8):
... turtle.stamp(); turtle.fd(30)
...
>>> turtle.clearstamps(2)
>>> turtle.clearstamps(-2)
>>> turtle.clearstamps()
Nr )rS rq rJ )r� r� ZtoDeleterH r� r� r� r7 - s zRawTurtle.clearstampsc
C s� | j | j| jt| jt�f}| j}d| j||| j| j dd� |�
| j�| j dd� ff}| j rh| j �
|� | j}| j�rZ|jdk�rZ|| }|d |j d |d |j d }dt|d dd| j | j � }|d | } td|�D ]R}
|
dkr�d
} nd } || |
| _| j �r2|�| j|| jf| j| j| � | �� q�| j �rZ|j| jd d
| jd� | j �rn| j �|� t| jt��r�| j�|� || _| j�r�| j�|� t| j �dk�r�| �� | �� dS )z�Move the pen to the point end, thereby drawing a line
if pen is down. All other methods for turtle movement depend
on this one.
�goNr� r r� r� r� 皙�����?r� TF�r� r� r� �r" rz �* ) r+ r) r' r� rO r� r� r rQ rR r� r� r r� r, r� r4 r5 r� r rE rK rJ r> rM rL r� r= ) r� r �go_modesr� Z
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� zRawTurtle._gotoc s |\}}}}|\}}}} |\}
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|d� � �fdd�| jD �}|D ]}��|� | j� |� q�|}| j
�r��j dk�r�|| }|d �j d
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}dt|d d d | j
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� }|d
| }td|�D ]P}|dk�r@d}nd}||| | _|�rr��| j|| jf|||� | �� �q,|�r��j| jdd|d� || _| j�r�t| j�d k�r�| j�� | jg k�r�d| _d| _| �r| jg k�r�d| _td� n| jdk �r| j�� | �� dS )z)Reverse a _goto. Used for undo()
r� z$undogoto: HALLO-DA-STIMMT-WAS-NICHT!r� r� ru c s& g | ] }|� kr�� |�d kr|�qS )r� )ry rz �r� r� r� r� r~ � s �z'RawTurtle._undogoto.<locals>.<listcomp>r� r r� r� rs r� TFrt Nz Unwahrscheinlich in _undogoto!)r� r r r� rQ rR rE r� rI r� r, r� r4 r5 r� r rK rJ rM r� rL r� rO )r� �entry�old�newrw ZcoodataZdrawingZpcZpsrB ZcLIZcLr� ZusepcZtodeleter| rx ry rz r{ r| r� rA r� r} r� � _undogoto~ sl
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zRawTurtle._undogotoc C s� | j r| j �d|| jf� || j9 }| j�|�}| jj}|dkr�| jdkr�d| j }dtt |�| � }d| | }t
|�D ]}| j�|�| _| � � q||| _| � � dS )z&Turns pen clockwise by angle.
�rotr� r g @r� N) r r� r r r� r� r� r, r� r r rJ )r� r� Z neworientr� Zanglevelr r| r� r� r� r� r � s
zRawTurtle._rotateTc C sn t | j�dkrD| j�| j| j| j| j� | j�� | _| j� | j� n| jj| jdd� g | _|rj| j
g| _dS )z�Closes current line item and starts a new one.
Remark: if current line became too long, animation
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r� T)rA N) r� rR r� rE rQ r) r' rD r� r> r rA r� r� r� r= � s � zRawTurtle._newLinec C s t | jt�S )a Return fillstate (True if filling, False else).
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.begin_fill()
>>> if turtle.filling():
... turtle.pensize(5)
... else:
... turtle.pensize(3)
)r� rO r� r� r� r� r� rB � s zRawTurtle.fillingc C sX | � � s"| j�� | _| j�| j� | jg| _| �� | j rL| j �
d| jf� | � � dS )a Called just before drawing a shape to be filled.
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.color("black", "red")
>>> turtle.begin_fill()
>>> turtle.circle(60)
>>> turtle.end_fill()
� beginfillN) rB r� r: rN r� r> r rO r= r r� rJ r� r� r� r� r1 � s
zRawTurtle.begin_fillc C s^ | � � rZt| j�dkrF| jj| j| j| jd� | jrF| j�d| jf� d | _| _| � � dS )a Fill the shape drawn after the call begin_fill().
No argument.
Example (for a Turtle instance named turtle):
>>> turtle.color("black", "red")
>>> turtle.begin_fill()
>>> turtle.circle(60)
>>> turtle.end_fill()
r� r; �dofillN)
rB r� rO r� rC rN r* r r� rJ r� r� r� r� r>
s � zRawTurtle.end_fillc G s8 |sNt |ttf�r0| �|�}| jt| jd� }qr| j}|sr| jt| jd� }n$|dkrh| jt| jd� }| �|�}t| jd�r�| j� | j
||�}| j � |� | j
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a� Draw a dot with diameter size, using color.
Optional arguments:
size -- an integer >= 1 (if given)
color -- a colorstring or a numeric color tuple
Draw a circular dot with diameter size, using color.
If size is not given, the maximum of pensize+4 and 2*pensize is used.
Example (for a Turtle instance named turtle):
>>> turtle.dot()
>>> turtle.fd(50); turtle.dot(20, "blue"); turtle.fd(50)
r� N�_dotr< r Tr2 r F)r� r� r� r� r' rf r) �hasattrr� r� r r� r> r r� rV r� ra rM rX rY rW rC )r� rV r9 rH rV r� r� r� r<
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z
RawTurtle.dotc C sB | j �| j|||| j�\}}| j�|� | jr>| j�d|f� |S )z)Performs the writing for write()
�wri)r� rX r r) r� r> r r� )r� rV rW rU rH r r� r� r� rX H
s � zRawTurtle._writerP ��Arialr� r7 c C s` | j r | j �dg� d| j _| �t|�|�� |�}|rN| �� \}}| �||� | j r\d| j _dS )a� Write text at the current turtle position.
Arguments:
arg -- info, which is to be written to the TurtleScreen
move (optional) -- True/False
align (optional) -- one of the strings "left", "center" or right"
font (optional) -- a triple (fontname, fontsize, fonttype)
Write text - the string representation of arg - at the current
turtle position according to align ("left", "center" or right")
and with the given font.
If move is True, the pen is moved to the bottom-right corner
of the text. By default, move is False.
Example (for a Turtle instance named turtle):
>>> turtle.write('Home = ', True, align="center")
>>> turtle.write((0,0), True)
r TFN)r r� r� rX r� r� r[ re )r� �argZmoverW rU r r� r� r� r� r� r{ R
s zRawTurtle.writec C s | j g| _d| _dS )a Start recording the vertices of a polygon.
No argument.
Start recording the vertices of a polygon. Current turtle position
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Example (for a Turtle instance named turtle):
>>> turtle.begin_poly()
TN)r rL rM r� r� r� r� r2 o
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zRawTurtle.begin_polyc C s
d| _ dS )a7 Stop recording the vertices of a polygon.
No argument.
Stop recording the vertices of a polygon. Current turtle position is
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Example (for a Turtle instance named turtle):
>>> turtle.end_poly()
FN)rM r� r� r� r� r? }
s zRawTurtle.end_polyc C s | j dk rt| j �S dS )z�Return the lastly recorded polygon.
No argument.
Example (for a Turtle instance named turtle):
>>> p = turtle.get_poly()
>>> turtle.register_shape("myFavouriteShape", p)
N)rL r� r� r� r� r� rD �
s
zRawTurtle.get_polyc C s | j S )a� Return the TurtleScreen object, the turtle is drawing on.
No argument.
Return the TurtleScreen object, the turtle is drawing on.
So TurtleScreen-methods can be called for that object.
Example (for a Turtle instance named turtle):
>>> ts = turtle.getscreen()
>>> ts
<turtle.TurtleScreen object at 0x0106B770>
>>> ts.bgcolor("pink")
rG r� r� r� r� rF �
s zRawTurtle.getscreenc C s | S )aU Return the Turtleobject itself.
No argument.
Only reasonable use: as a function to return the 'anonymous turtle':
Example:
>>> pet = getturtle()
>>> pet.fd(50)
>>> pet
<turtle.Turtle object at 0x0187D810>
>>> turtles()
[<turtle.Turtle object at 0x0187D810>]
r� r� r� r� r� rH �
s zRawTurtle.getturtlec C s | j �|�S )zDSet delay value which determines speed of turtle animation.
)r� r rL r� r� r� rM �
s zRawTurtle._delayr� c C s" | j �| jj|||� | �� dS )a� Bind fun to mouse-click event on this turtle on canvas.
Arguments:
fun -- a function with two arguments, to which will be assigned
the coordinates of the clicked point on the canvas.
btn -- number of the mouse-button defaults to 1 (left mouse button).
add -- True or False. If True, new binding will be added, otherwise
it will replace a former binding.
Example for the anonymous turtle, i. e. the procedural way:
>>> def turn(x, y):
... left(360)
...
>>> onclick(turn) # Now clicking into the turtle will turn it.
>>> onclick(None) # event-binding will be removed
N)r� re r� rH rJ r� r� r� r� rR �
s zRawTurtle.onclickc C s" | j �| jj|||� | �� dS )a� Bind fun to mouse-button-release event on this turtle on canvas.
Arguments:
fun -- a function with two arguments, to which will be assigned
the coordinates of the clicked point on the canvas.
btn -- number of the mouse-button defaults to 1 (left mouse button).
Example (for a MyTurtle instance named joe):
>>> class MyTurtle(Turtle):
... def glow(self,x,y):
... self.fillcolor("red")
... def unglow(self,x,y):
... self.fillcolor("")
...
>>> joe = MyTurtle()
>>> joe.onclick(joe.glow)
>>> joe.onrelease(joe.unglow)
Clicking on joe turns fillcolor red, unclicking turns it to
transparent.
N)r� rf r� rH rJ r� r� r� r� rT �
s zRawTurtle.onreleasec C s | j �| jj|||� dS )a� Bind fun to mouse-move event on this turtle on canvas.
Arguments:
fun -- a function with two arguments, to which will be assigned
the coordinates of the clicked point on the canvas.
btn -- number of the mouse-button defaults to 1 (left mouse button).
Every sequence of mouse-move-events on a turtle is preceded by a
mouse-click event on that turtle.
Example (for a Turtle instance named turtle):
>>> turtle.ondrag(turtle.goto)
Subsequently clicking and dragging a Turtle will move it
across the screen thereby producing handdrawings (if pen is
down).
N)r� rg r� rH r� r� r� r� rS �
s zRawTurtle.ondragc C s, | j dkrdS |dkr@|\}}| �| | | j � | j �� }n�|dkr\|d }| �|� n�|dkrp| �|� n�|dkr�|d }| j�|� | j� |� n�|dkr�|d }| jj
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�| |d � | j �� dS )
z2Does the main part of the work for undo()
Nr� rr r rr )r� r< r� rh r� r8 r� rV )r r r r� r6 r� r� rI r� r� rC rN rO r$ rV )r� �actionr� r� ZdegPAUZdummyrm rH r� r� r� �_undo s<
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zRawTurtle._undoc C sl | j dkrdS | j �� }|d }|dd� }|dkr\|rh|�� }| �|d |dd� � q4n | �||� dS )a� undo (repeatedly) the last turtle action.
No argument.
undo (repeatedly) the last turtle action.
Number of available undo actions is determined by the size of
the undobuffer.
Example (for a Turtle instance named turtle):
>>> for i in range(4):
... turtle.fd(50); turtle.lt(80)
...
>>> for i in range(8):
... turtle.undo()
...
Nr r� r )r r� r� )r� rH r� r� r� r� r� rw ' s
zRawTurtle.undo)NN)N)NNN)N)N)NNNN)F)N)T)N)FrP r� )N)r� N)r� N)r� N)9r� r� r� r� rJ r� r� r` rh rx rU r5 r� rJ r r� r� rX r8 rk rl rn rg rt rs rm rc rG rd r� rr rq r6 r7 r
r� r r= rB r1 r> r< rX r{ r2 r? rD rF rH rE rM rR rT rS r� rw rv r� r� r� r� r
� sr �
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c C s t jdkrt� t _t jS )z�Return the singleton screen object.
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||||� d S )Nrz r� r� r� r� r� )rI �_rootr r) �_titler) �_destroyr r� r# r$ r r� r& )r� rz r� r� r� r� r� r� r� r� r� X s
z_Screen.__init__rz r� r� r� c C s� t | jd�sdS | j�� }| j�� }t|t�rNd| krBdkrNn n|| }|dkrb|| d }t|t�r�d| kr�dkr�n n|| }|dkr�|| d }| j�||||� | �� dS )a Set the size and position of the main window.
Arguments:
width: as integer a size in pixels, as float a fraction of the screen.
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height: as integer the height in pixels, as float a fraction of the
screen. Default is 75% of screen.
startx: if positive, starting position in pixels from the left
edge of the screen, if negative from the right edge
Default, startx=None is to center window horizontally.
starty: if positive, starting position in pixels from the top
edge of the screen, if negative from the bottom edge
Default, starty=None is to center window vertically.
Examples (for a Screen instance named screen):
>>> screen.setup (width=200, height=200, startx=0, starty=0)
sets window to 200x200 pixels, in upper left of screen
>>> screen.setup(width=.75, height=0.5, startx=None, starty=None)
sets window to 75% of screen by 50% of screen and centers
r' Nr r� r� )r� r� r* r+ r� r� r' r, )r� rz r� r% r& rQ Zshr� r� r� r& n s
" " z
_Screen.setupc C s t jdk rt j�|� |t _dS )aq Set title of turtle-window
Argument:
titlestring -- a string, to appear in the titlebar of the
turtle graphics window.
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objects.
Example (for a Screen instance named screen):
>>> screen.title("Welcome to the turtle-zoo!")
N)rI r� r) r� )r� Z titlestringr� r� r� r) � s
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_Screen.titlec C s: | j }|tj kr(d t_d t_d t_ d t_dt_|�� d S )NF) r� rI r r� r� r r r� r( )r� �rootr� r� r� r� � s
z_Screen._destroyc C s | � � dS )z~Shut the turtlegraphics window.
Example (for a TurtleScreen instance named screen):
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N)r� r� r� r� r� r � s z _Screen.byec sN � fdd�}� � |� td r"dS z
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rH td� Y nX dS )al Go into mainloop until the mouse is clicked.
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Bind bye() method to mouseclick on TurtleScreen.
If "using_IDLE" - value in configuration dictionary is False
(default value), enter mainloop.
If IDLE with -n switch (no subprocess) is used, this value should be
set to True in turtle.cfg. In this case IDLE's mainloop
is active also for the client script.
This is a method of the Screen-class and not available for
TurtleScreen instances.
Example (for a Screen instance named screen):
>>> screen.exitonclick()
c s � � � dS )z&Screen.bye() with two dummy-parametersN)r )r� r� r� r� r� �exitGracefully� s z+_Screen.exitonclick.<locals>.exitGracefullyr� Nr )rR r� r �AttributeError�exit)r� r� r� r� r� r � s
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Nrk r� r� c C s, t jd krt� t _tj| t j|||d� d S )N)rk r� r� )r r� r r
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�zTurtle.__init__)r� r� r� r� r� r� r� r� r� r� r� r� r � s ��turtle_docstringdictc C s� i }t D ]}d| }t|�j||< qtD ]}d| }t|�j||< q(td| d���}tdd� |D ��}|�d� |dd � D ](}|�d
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� |�� W 5 Q R X dS )a� Create and write docstring-dictionary to file.
Optional argument:
filename -- a string, used as filename
default value is turtle_docstringdict
Has to be called explicitly, (not used by the turtle-graphics classes)
The docstring dictionary will be written to the Python script <filname>.py
It is intended to serve as a template for translation of the docstrings
into different languages.
z_Screen.zTurtle.z%s.pyr6 c s s$ | ] }|� d �d tkr|V qdS )r� r� N)r � _alias_listr� r� r� r� r� s �z&write_docstringdict.<locals>.<genexpr>zdocsdict = {
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r� r� Nc S s g | ]}d |f �qS )z=%rr� )r{ r� r� r� r� r~ < s z"getmethparlist.<locals>.<listcomp>c S s g | ]\}}|| �qS r� r� )r{ r� Zdfltr� r� r� r~ > s �*z**z, z(%s))�inspectZgetargs�__code__� __defaults__r� ri r> r )
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{obj} = {init}
try:
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except TK.TclError:
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e!�Z$dS )/aq Generic socket server classes.
This module tries to capture the various aspects of defining a server:
For socket-based servers:
- address family:
- AF_INET{,6}: IP (Internet Protocol) sockets (default)
- AF_UNIX: Unix domain sockets
- others, e.g. AF_DECNET are conceivable (see <socket.h>
- socket type:
- SOCK_STREAM (reliable stream, e.g. TCP)
- SOCK_DGRAM (datagrams, e.g. UDP)
For request-based servers (including socket-based):
- client address verification before further looking at the request
(This is actually a hook for any processing that needs to look
at the request before anything else, e.g. logging)
- how to handle multiple requests:
- synchronous (one request is handled at a time)
- forking (each request is handled by a new process)
- threading (each request is handled by a new thread)
The classes in this module favor the server type that is simplest to
write: a synchronous TCP/IP server. This is bad class design, but
saves some typing. (There's also the issue that a deep class hierarchy
slows down method lookups.)
There are five classes in an inheritance diagram, four of which represent
synchronous servers of four types:
+------------+
| BaseServer |
+------------+
|
v
+-----------+ +------------------+
| TCPServer |------->| UnixStreamServer |
+-----------+ +------------------+
|
v
+-----------+ +--------------------+
| UDPServer |------->| UnixDatagramServer |
+-----------+ +--------------------+
Note that UnixDatagramServer derives from UDPServer, not from
UnixStreamServer -- the only difference between an IP and a Unix
stream server is the address family, which is simply repeated in both
unix server classes.
Forking and threading versions of each type of server can be created
using the ForkingMixIn and ThreadingMixIn mix-in classes. For
instance, a threading UDP server class is created as follows:
class ThreadingUDPServer(ThreadingMixIn, UDPServer): pass
The Mix-in class must come first, since it overrides a method defined
in UDPServer! Setting the various member variables also changes
the behavior of the underlying server mechanism.
To implement a service, you must derive a class from
BaseRequestHandler and redefine its handle() method. You can then run
various versions of the service by combining one of the server classes
with your request handler class.
The request handler class must be different for datagram or stream
services. This can be hidden by using the request handler
subclasses StreamRequestHandler or DatagramRequestHandler.
Of course, you still have to use your head!
For instance, it makes no sense to use a forking server if the service
contains state in memory that can be modified by requests (since the
modifications in the child process would never reach the initial state
kept in the parent process and passed to each child). In this case,
you can use a threading server, but you will probably have to use
locks to avoid two requests that come in nearly simultaneous to apply
conflicting changes to the server state.
On the other hand, if you are building e.g. an HTTP server, where all
data is stored externally (e.g. in the file system), a synchronous
class will essentially render the service "deaf" while one request is
being handled -- which may be for a very long time if a client is slow
to read all the data it has requested. Here a threading or forking
server is appropriate.
In some cases, it may be appropriate to process part of a request
synchronously, but to finish processing in a forked child depending on
the request data. This can be implemented by using a synchronous
server and doing an explicit fork in the request handler class
handle() method.
Another approach to handling multiple simultaneous requests in an
environment that supports neither threads nor fork (or where these are
too expensive or inappropriate for the service) is to maintain an
explicit table of partially finished requests and to use a selector to
decide which request to work on next (or whether to handle a new
incoming request). This is particularly important for stream services
where each client can potentially be connected for a long time (if
threads or subprocesses cannot be used).
Future work:
- Standard classes for Sun RPC (which uses either UDP or TCP)
- Standard mix-in classes to implement various authentication
and encryption schemes
XXX Open problems:
- What to do with out-of-band data?
BaseServer:
- split generic "request" functionality out into BaseServer class.
Copyright (C) 2000 Luke Kenneth Casson Leighton <lkcl@samba.org>
example: read entries from a SQL database (requires overriding
get_request() to return a table entry from the database).
entry is processed by a RequestHandlerClass.
z0.4� N)�BufferedIOBase)� monotonic�
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dd� Zdd� Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zd$d%� ZdS )'r a� Base class for server classes.
Methods for the caller:
- __init__(server_address, RequestHandlerClass)
- serve_forever(poll_interval=0.5)
- shutdown()
- handle_request() # if you do not use serve_forever()
- fileno() -> int # for selector
Methods that may be overridden:
- server_bind()
- server_activate()
- get_request() -> request, client_address
- handle_timeout()
- verify_request(request, client_address)
- server_close()
- process_request(request, client_address)
- shutdown_request(request)
- close_request(request)
- service_actions()
- handle_error()
Methods for derived classes:
- finish_request(request, client_address)
Class variables that may be overridden by derived classes or
instances:
- timeout
- address_family
- socket_type
- allow_reuse_address
Instance variables:
- RequestHandlerClass
- socket
Nc C s || _ || _t�� | _d| _dS )�/Constructor. May be extended, do not override.FN)�server_address�RequestHandlerClass� threadingZEvent�_BaseServer__is_shut_down� _BaseServer__shutdown_request)�selfr r � r �$/usr/lib64/python3.8/socketserver.py�__init__� s
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� q"W 5 Q R X W 5 d| _| j �� X dS )z�Handle one request at a time until shutdown.
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another thread.
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poll_interval�selector�readyr r r �
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TN)r r �waitr" r r r �shutdown� s zBaseServer.shutdownc C s dS )z�Called by the serve_forever() loop.
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C s� | j �� }|dkr| j}n| jdk r0t|| j�}|dk rBt� | }t� �f}|�| tj� |� |�}|rz| �
� W 5 Q R � S |dk rX|t� }|dk rX| � � W 5 Q R � S qXW 5 Q R X dS )zOHandle one request, possibly blocking.
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gettimeout�timeout�min�timer' r( r) r* r+ r, �handle_timeout)r r4 Zdeadliner. r/ r r r �handle_request s
zBaseServer.handle_requestc C s� z| � � \}}W n tk
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| �|� dS )z�Handle one request, without blocking.
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Nr r" r r r r7 F s zBaseServer.handle_timeoutc C s dS )znVerify the request. May be overridden.
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Tr r@ r r r r; M s zBaseServer.verify_requestc C s | � ||� | �|� dS )zVCall finish_request.
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N)�finish_requestr? r@ r r r r< U s zBaseServer.process_requestc C s dS �zDCalled to clean-up the server.
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Nr r" r r r � server_close^ s zBaseServer.server_closec C s | � ||| � dS )z8Finish one request by instantiating RequestHandlerClass.N)r r@ r r r rC f s zBaseServer.finish_requestc C s | � |� dS �z3Called to shutdown and close an individual request.N��
close_request�r rA r r r r? j s zBaseServer.shutdown_requestc C s dS �z)Called to clean up an individual request.Nr rI r r r rH n s zBaseServer.close_requestc C s@ t dtjd� t d|tjd� ddl}|�� t dtjd� dS )ztHandle an error gracefully. May be overridden.
The default is to print a traceback and continue.
z(----------------------------------------)�filez4Exception happened during processing of request fromr N)�print�sys�stderr� traceback� print_exc)r rA rB rO r r r r> r s �zBaseServer.handle_errorc C s | S �Nr r" r r r � __enter__ s zBaseServer.__enter__c G s | � � d S rQ )rE )r �argsr r r �__exit__� s zBaseServer.__exit__)r$ )�__name__�
__module__� __qualname__�__doc__r4 r r# r0 r2 r- r8 r, r7 r; r< rE rC r? rH r> rR rT r r r r r � s& +
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d� Zdd� Zdd� Zdd� ZdS )r a3 Base class for various socket-based server classes.
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- shutdown()
- handle_request() # if you don't use serve_forever()
- fileno() -> int # for selector
Methods that may be overridden:
- server_bind()
- server_activate()
- get_request() -> request, client_address
- handle_timeout()
- verify_request(request, client_address)
- process_request(request, client_address)
- shutdown_request(request)
- close_request(request)
- handle_error()
Methods for derived classes:
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� FTc C sT t �| ||� t�| j| j�| _|rPz| �� | �� W n | �� � Y nX dS )r N)r r r3 �address_family� socket_type� server_bindr# rE )r r r Zbind_and_activater r r r � s � zTCPServer.__init__c C s8 | j r| j�tjtjd� | j�| j� | j�� | _dS )zOCalled by constructor to bind the socket.
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)r3 Zacceptr" r r r r9 � s zTCPServer.get_requestc C s4 z|� tj� W n tk
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dg�ZReSedI��rejTZUnejVZUG dJd� d�ZWdKdL� ZXeYdMk�rFeX� dS )NaQ TELNET client class.
Based on RFC 854: TELNET Protocol Specification, by J. Postel and
J. Reynolds
Example:
>>> from telnetlib import Telnet
>>> tn = Telnet('www.python.org', 79) # connect to finger port
>>> tn.write(b'guido\r\n')
>>> print(tn.read_all())
Login Name TTY Idle When Where
guido Guido van Rossum pts/2 <Dec 2 11:10> snag.cnri.reston..
>>>
Note that read_all() won't read until eof -- it just reads some data
-- but it guarantees to read at least one byte unless EOF is hit.
It is possible to pass a Telnet object to a selector in order to wait until
more data is available. Note that in this case, read_eager() may return b''
even if there was data on the socket, because the protocol negotiation may have
eaten the data. This is why EOFError is needed in some cases to distinguish
between "no data" and "connection closed" (since the socket also appears ready
for reading when it is closed).
To do:
- option negotiation
- timeout should be intrinsic to the connection object instead of an
option on one of the read calls only
� N)� monotonic�Telnet� � � � � � �� �� �� �� �� � � � � � � � � � � � � � � � �
� � �
� � � � � � � � � � � � � � � � � � �! �" �# �$ �% �& �' �( �) �* �+ �, �- �. �/ �0 �1 � � � � PollSelectorc @ s e Zd ZdZddejfdd�Zdejfdd�Zdd � Zd
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An instance of this class represents a connection to a telnet
server. The instance is initially not connected; the open()
method must be used to establish a connection. Alternatively, the
host name and optional port number can be passed to the
constructor, too.
Don't try to reopen an already connected instance.
This class has many read_*() methods. Note that some of them
raise EOFError when the end of the connection is read, because
they can return an empty string for other reasons. See the
individual doc strings.
read_until(expected, [timeout])
Read until the expected string has been seen, or a timeout is
hit (default is no timeout); may block.
read_all()
Read all data until EOF; may block.
read_some()
Read at least one byte or EOF; may block.
read_very_eager()
Read all data available already queued or on the socket,
without blocking.
read_eager()
Read either data already queued or some data available on the
socket, without blocking.
read_lazy()
Read all data in the raw queue (processing it first), without
doing any socket I/O.
read_very_lazy()
Reads all data in the cooked queue, without doing any socket
I/O.
read_sb_data()
Reads available data between SB ... SE sequence. Don't block.
set_option_negotiation_callback(callback)
Each time a telnet option is read on the input flow, this callback
(if set) is called with the following parameters :
callback(telnet socket, command, option)
option will be chr(0) when there is no option.
No other action is done afterwards by telnetlib.
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|�r�t dt | j�| �}| � � | �� | j�||�}|dkr�|| }| jd|� }| j|d� | _|W 5 Q R � S |dk rv|t� }|dk rv�qqvW 5 Q R X | �
� S )a Read until a given string is encountered or until timeout.
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zTelnet.read_allc C s6 | � � | js&| js&| �� | � � q| j}d| _|S )z�Read at least one byte of cooked data unless EOF is hit.
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zTelnet.read_somec C s0 | � � | js(| �� r(| �� | � � q| �� S )a Read everything that's possible without blocking in I/O (eager).
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available. Return b'' if no cooked data available otherwise.
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This module provides some more Pythonic support for SSL.
Object types:
SSLSocket -- subtype of socket.socket which does SSL over the socket
Exceptions:
SSLError -- exception raised for I/O errors
Functions:
cert_time_to_seconds -- convert time string used for certificate
notBefore and notAfter functions to integer
seconds past the Epoch (the time values
returned from time.time())
fetch_server_certificate (HOST, PORT) -- fetch the certificate provided
by the server running on HOST at port PORT. No
validation of the certificate is performed.
Integer constants:
SSL_ERROR_ZERO_RETURN
SSL_ERROR_WANT_READ
SSL_ERROR_WANT_WRITE
SSL_ERROR_WANT_X509_LOOKUP
SSL_ERROR_SYSCALL
SSL_ERROR_SSL
SSL_ERROR_WANT_CONNECT
SSL_ERROR_EOF
SSL_ERROR_INVALID_ERROR_CODE
The following group define certificate requirements that one side is
allowing/requiring from the other side:
CERT_NONE - no certificates from the other side are required (or will
be looked at if provided)
CERT_OPTIONAL - certificates are not required, but if provided will be
validated, and if validation fails, the connection will
also fail
CERT_REQUIRED - certificates are required, and will be validated, and
if validation fails, the connection will also fail
The following constants identify various SSL protocol variants:
PROTOCOL_SSLv2
PROTOCOL_SSLv3
PROTOCOL_SSLv23
PROTOCOL_TLS
PROTOCOL_TLS_CLIENT
PROTOCOL_TLS_SERVER
PROTOCOL_TLSv1
PROTOCOL_TLSv1_1
PROTOCOL_TLSv1_2
The following constants identify various SSL alert message descriptions as per
http://www.iana.org/assignments/tls-parameters/tls-parameters.xml#tls-parameters-6
ALERT_DESCRIPTION_CLOSE_NOTIFY
ALERT_DESCRIPTION_UNEXPECTED_MESSAGE
ALERT_DESCRIPTION_BAD_RECORD_MAC
ALERT_DESCRIPTION_RECORD_OVERFLOW
ALERT_DESCRIPTION_DECOMPRESSION_FAILURE
ALERT_DESCRIPTION_HANDSHAKE_FAILURE
ALERT_DESCRIPTION_BAD_CERTIFICATE
ALERT_DESCRIPTION_UNSUPPORTED_CERTIFICATE
ALERT_DESCRIPTION_CERTIFICATE_REVOKED
ALERT_DESCRIPTION_CERTIFICATE_EXPIRED
ALERT_DESCRIPTION_CERTIFICATE_UNKNOWN
ALERT_DESCRIPTION_ILLEGAL_PARAMETER
ALERT_DESCRIPTION_UNKNOWN_CA
ALERT_DESCRIPTION_ACCESS_DENIED
ALERT_DESCRIPTION_DECODE_ERROR
ALERT_DESCRIPTION_DECRYPT_ERROR
ALERT_DESCRIPTION_PROTOCOL_VERSION
ALERT_DESCRIPTION_INSUFFICIENT_SECURITY
ALERT_DESCRIPTION_INTERNAL_ERROR
ALERT_DESCRIPTION_USER_CANCELLED
ALERT_DESCRIPTION_NO_RENEGOTIATION
ALERT_DESCRIPTION_UNSUPPORTED_EXTENSION
ALERT_DESCRIPTION_CERTIFICATE_UNOBTAINABLE
ALERT_DESCRIPTION_UNRECOGNIZED_NAME
ALERT_DESCRIPTION_BAD_CERTIFICATE_STATUS_RESPONSE
ALERT_DESCRIPTION_BAD_CERTIFICATE_HASH_VALUE
ALERT_DESCRIPTION_UNKNOWN_PSK_IDENTITY
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f ��ntd��dS )a� Verify that *cert* (in decoded format as returned by
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The function matches IP addresses rather than dNSNames if hostname is a
valid ipaddress string. IPv4 addresses are supported on all platforms.
IPv6 addresses are supported on platforms with IPv6 support (AF_INET6
and inet_pton).
CertificateError is raised on failure. On success, the function
returns nothing.
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r, c s t � j| ft|dd��� S )NFr* ��super�__new__�_txt2obj)�cls�oid�� __class__r, r- r� � s z_ASN1Object.__new__c s t � j| ft|��� S )z3Create _ASN1Object from OpenSSL numeric ID
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| �|� d S )Nr� r r� z)ALPN protocols must be 1 to 255 in length)r� r� r� r r� r� Z_set_alpn_protocols)r� Zalpn_protocolsr� r� r� r, r, r- �set_alpn_protocols s
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c s t t� j�S r� )r7 r� �maximum_versionr� r� r, r- r� L s zSSLContext.maximum_versionc s t tt�j�| |� d S r� )r� r� r� r� r� r� r, r- r� P s c s t t� j�S r� )r1 r� r� r� r� r, r- r� T s zSSLContext.optionsc s t tt�j�| |� d S r� )r� r� r� r� r� r� r, r- r� X s r� c C s | j tj@ }|tjkS r� �Z _host_flagsr; r� )r� Zncsr, r, r- �hostname_checks_common_name] s z&SSLContext.hostname_checks_common_namec C s, |r| j tj M _ n| j tjO _ d S r� r� r� r, r, r- r� b s c C s dS )NTr, r� r, r, r- r� i s c s t � j}|dk r|jS dS dS )a9 TLS message callback
The message callback provides a debugging hook to analyze TLS
connections. The callback is called for any TLS protocol message
(header, handshake, alert, and more), but not for application data.
Due to technical limitations, the callback can't be used to filter
traffic or to abort a connection. Any exception raised in the
callback is delayed until the handshake, read, or write operation
has been performed.
def msg_cb(conn, direction, version, content_type, msg_type, data):
pass
conn
:class:`SSLSocket` or :class:`SSLObject` instance
direction
``read`` or ``write``
version
:class:`TLSVersion` enum member or int for unknown version. For a
frame header, it's the header version.
content_type
:class:`_TLSContentType` enum member or int for unsupported
content type.
msg_type
Either a :class:`_TLSContentType` enum number for a header
message, a :class:`_TLSAlertType` enum member for an alert
message, a :class:`_TLSMessageType` enum member for other
messages, or int for unsupported message types.
data
Raw, decrypted message content as bytes
N)r� �
_msg_callback�
user_function)r� �innerr� r, r- r� m s !zSSLContext._msg_callbackc sb � d kr t tt�j�| d � d S t� d�s8t� � d���� fdd�}� |_t tt�j�| |� d S )N�__call__z is not callable.c s� z t |�}W n tk
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r� Y nX � | |||||�S r� )r7 r� r= rG rF rH rg )Zconn� direction�versionZ content_typeZmsg_type�dataZmsg_enum��callbackr, r- r� � s,
�z'SSLContext._msg_callback.<locals>.inner)r� r� r� r� �hasattrr� r� )r� r r� r� r r- r� � s
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&%r� )r� r� r� c C s� t | t�st| ��tt�}| tjkr0t|_d|_ |s<|s<|rL|�
|||� n|jt kr`|� | � t
|d�r�tj�d�}|r�tjjs�||_|S )z�Create a SSLContext object with default settings.
NOTE: The protocol and settings may change anytime without prior
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T�keylog_filename�
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r F)� cert_reqsr r� �certfile�keyfiler� r� r� c C s� t |t�st|��t| �} |s$d| _|dk r2|| _|r<d| _|rL|sLtd��|sT|r`| �||� |sl|sl|r|| �|||� n| jt kr�| �
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| _| S )a/ Create a SSLContext object for Python stdlib modules
All Python stdlib modules shall use this function to create SSLContext
objects in order to keep common settings in one place. The configuration
is less restrict than create_default_context()'s to increase backward
compatibility.
FNT�certfile must be specifiedr r )r� r� r� r� r r r� �load_cert_chainr� r r� r r� r� r� r� r
r r ) r� r r r� r r r� r� r� r� r r, r, r- �_create_unverified_context� s,
r c @ s� e Zd ZdZdd� Zed2dd��Zedd � �Zej d
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edd� �Z edd� �Z edd� �Z
d3dd�Zdd� Zd4dd�Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd5d,d-�Zd.d/� Zd0d1� ZdS )6� SSLObjecta This class implements an interface on top of a low-level SSL object as
implemented by OpenSSL. This object captures the state of an SSL connection
but does not provide any network IO itself. IO needs to be performed
through separate "BIO" objects which are OpenSSL's IO abstraction layer.
This class does not have a public constructor. Instances are returned by
``SSLContext.wrap_bio``. This class is typically used by framework authors
that want to implement asynchronous IO for SSL through memory buffers.
When compared to ``SSLSocket``, this object lacks the following features:
* Any form of network IO, including methods such as ``recv`` and ``send``.
* The ``do_handshake_on_connect`` and ``suppress_ragged_eofs`` machinery.
c O s t | jj� d���d S )NzU does not have a public constructor. Instances are returned by SSLContext.wrap_bio().�r� r� r8 �r� r� r� r, r, r- �__init__; s �zSSLObject.__init__FNc C s* | � | �}|j||||||d�}||_|S )N)r� r� �ownerr� )r� Z _wrap_bio�_sslobj) r� r� r� r� r� r� r� r� r� r, r, r- r� A s
�zSSLObject._createc C s | j jS )z(The SSLContext that is currently in use.�r r� r� r, r, r- r� M s zSSLObject.contextc C s || j _d S r� r �r� Zctxr, r, r- r� R s c C s | j jS )z!The SSLSession for client socket.�r r� r� r, r, r- r� V s zSSLObject.sessionc C s || j _d S r� r �r� r� r, r, r- r� [ s c C s | j jS )z.Was the client session reused during handshake�r �session_reusedr� r, r, r- r" _ s zSSLObject.session_reusedc C s | j jS )z%Whether this is a server-side socket.)r r� r� r, r, r- r� d s zSSLObject.server_sidec C s | j jS )z^The currently set server hostname (for SNI), or ``None`` if no
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N)r �read)r� r� �buffer�vr, r, r- r$ o s zSSLObject.readc C s | j �|�S )z�Write 'data' to the SSL object and return the number of bytes
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)r �write�r� r� r, r, r- r' { s zSSLObject.writec C s | j �|�S )z�Returns a formatted version of the data in the certificate provided
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)r � getpeercert�r� Z binary_formr, r, r- r) � s zSSLObject.getpeercertc C s t jr| j�� S dS )z�Return the currently selected NPN protocol as a string, or ``None``
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| j �� S )z_Return the currently selected cipher as a 3-tuple ``(name,
ssl_version, secret_bits)``.)r �cipherr� r, r, r- r- � s zSSLObject.cipherc C s
| j �� S )z�Return a list of ciphers shared by the client during the handshake or
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)r �shared_ciphersr� r, r, r- r. � s zSSLObject.shared_ciphersc C s
| j �� S )z�Return the current compression algorithm in use, or ``None`` if
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| j �� S )z8Return the number of bytes that can be read immediately.)r �pendingr� r, r, r- r0 � s zSSLObject.pendingc C s | j �� dS )z Start the SSL/TLS handshake.N)r � do_handshaker� r, r, r- r1 � s zSSLObject.do_handshakec C s
| j �� S )z!Start the SSL shutdown handshake.)r �shutdownr� r, r, r- �unwrap� s zSSLObject.unwrapr� c C s | j �|�S )z�Get channel binding data for current connection. Raise ValueError
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or None if the data is not available (e.g. before the handshake).)r �get_channel_binding�r� Zcb_typer, r, r- r4 � s z SSLObject.get_channel_bindingc C s
| j �� S )zZReturn a string identifying the protocol version used by the
current SSL channel. �r r� r� r, r, r- r� � s zSSLObject.versionc C s
| j �� S r� )r � verify_client_post_handshaker� r, r, r- r7 � s z&SSLObject.verify_client_post_handshake)FNNN)r# N)F)r� ) r8 r9 r: rD r r� r� r r� r r� r" r� r� r$ r' r) r+ r, r- r. r/ r0 r1 r3 r4 r� r7 r, r, r, r- r , sH �
r c C s t t| j�j| _| S )z*Copy docstring from SSLObject to SSLSocket)�getattrr r8 rD )�funcr, r, r- � _sslcopydoc� s r: c s e Zd ZdZdd� ZedX� fdd� �Zeed d
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provides read and write methods over that channel. c O s t | jj� d���d S )NzX does not have a public constructor. Instances are returned by SSLContext.wrap_socket().r r r, r, r- r � s �zSSLSocket.__init__FTNc
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zSSLSocket._createc C s | j S r� )rG r� r, r, r- r� s zSSLSocket.contextc C s || _ || j_d S r� )rG r r� r r, r, r- r� s c C s | j d k r| j jS d S r� r r� r, r, r- r� s
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c C s | j d k r| j jS d S r� r! r� r, r, r- r" , s
zSSLSocket.session_reusedc C s t d| jj ��d S )NzCan't dup() %s instances)rB r� r8 r� r, r, r- �dup2 s �z
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C s� | � � | jdkrtd��z*|dk r4| j�||�W S | j�|�W S W nV tk
r� } z8|jd tkr�| jr�|dk r|W Y �dS W Y � dS n� W 5 d}~X Y nX dS )zORead up to LEN bytes and return them.
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zSSLSocket.writec C s | � � | �� | j�|�S r� )rR rS r r) r* r, r, r- r) ` s zSSLSocket.getpeercertc C s* | � � | jd kstjs d S | j�� S d S r� )rR r r; r r+ r� r, r, r- r+ f s z SSLSocket.selected_npn_protocolc C s* | � � | jd kstjs d S | j�� S d S r� )rR r r; r r, r� r, r, r- r, n s z SSLSocket.selected_alpn_protocolc C s$ | � � | jd krd S | j�� S d S r� )rR r r- r� r, r, r- r- v s
zSSLSocket.cipherc C s$ | � � | jd krd S | j�� S d S r� )rR r r. r� r, r, r- r. ~ s
zSSLSocket.shared_ciphersc C s$ | � � | jd krd S | j�� S d S r� )rR r r/ r� r, r, r- r/ � s
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s� | � � | jd k r�|dkr(td| j ��d}t|��H}|�d��2}t|�}||k rn| �||d � �}||7 }qJW 5 Q R X W 5 Q R X nt� � ||�S d S )Nr z6non-zero flags not allowed in calls to sendall() on %s�B)
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Nr= r? r r r" rA ? s zGenerator.sendNc C s4 |dkr|dkr|�|� }|dk r,|� |�}|�dS )zgRaise an exception in the generator.
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r c C s t �dS )zAdd an element.N��NotImplementedErrorr? r r r" �add: s zMutableSet.addc C s t �dS )z8Remove an element. Do not raise an exception if absent.Nr� r? r r r" �discard? s zMutableSet.discardc C s || krt |��| �|� dS )z5Remove an element. If not a member, raise a KeyError.N)�KeyErrorr� r? r r r" �removeD s zMutableSet.removec C s> t | �}z t|�}W n tk
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r" Y nX dS )z6This is slow (creates N new iterators!) but effective.N)r� r� r0 r r r" �clearT s zMutableSet.clearc C s |D ]}| � |� q| S r! )r� r� r r r" �__ior__\ s zMutableSet.__ior__c C s | | D ]}| � |� q| S r! )r� r� r r r" �__iand__a s zMutableSet.__iand__c C sR || kr| � � n<t|t�s&| �|�}|D ]"}|| krB| �|� q*| �|� q*| S r! )r� ra r rn r� r� r� r r r" �__ixor__f s
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r0 || jkr(� | Y S X | |= |S dS )z�D.pop(k[,d]) -> v, remove specified key and return the corresponding value.
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This module provides immutable UUID objects (class UUID) and the functions
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UUIDs as specified in RFC 4122.
If all you want is a unique ID, you should probably call uuid1() or uuid4().
Note that uuid1() may compromise privacy since it creates a UUID containing
the computer's network address. uuid4() creates a random UUID.
Typical usage:
>>> import uuid
# make a UUID based on the host ID and current time
>>> uuid.uuid1() # doctest: +SKIP
UUID('a8098c1a-f86e-11da-bd1a-00112444be1e')
# make a UUID using an MD5 hash of a namespace UUID and a name
>>> uuid.uuid3(uuid.NAMESPACE_DNS, 'python.org')
UUID('6fa459ea-ee8a-3ca4-894e-db77e160355e')
# make a random UUID
>>> uuid.uuid4() # doctest: +SKIP
UUID('16fd2706-8baf-433b-82eb-8c7fada847da')
# make a UUID using a SHA-1 hash of a namespace UUID and a name
>>> uuid.uuid5(uuid.NAMESPACE_DNS, 'python.org')
UUID('886313e1-3b8a-5372-9b90-0c9aee199e5d')
# make a UUID from a string of hex digits (braces and hyphens ignored)
>>> x = uuid.UUID('{00010203-0405-0607-0809-0a0b0c0d0e0f}')
# convert a UUID to a string of hex digits in standard form
>>> str(x)
'00010203-0405-0607-0809-0a0b0c0d0e0f'
# get the raw 16 bytes of the UUID
>>> x.bytes
b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f'
# make a UUID from a 16-byte string
>>> uuid.UUID(bytes=x.bytes)
UUID('00010203-0405-0607-0809-0a0b0c0d0e0f')
� N)�EnumzKa-Ping Yee <ping@zesty.ca>)�win32�darwinFZAIXZLinuxz reserved for NCS compatibilityzspecified in RFC 4122z$reserved for Microsoft compatibilityz reserved for future definitionc @ s e Zd ZdZdZdZdS )�SafeUUIDr ���N)�__name__�
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UUID objects are immutable, hashable, and usable as dictionary keys.
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five possible forms: a similar string of hexadecimal digits, or a tuple
of six integer fields (with 32-bit, 16-bit, 16-bit, 8-bit, 8-bit, and
48-bit values respectively) as an argument named 'fields', or a string
of 16 bytes (with all the integer fields in big-endian order) as an
argument named 'bytes', or a string of 16 bytes (with the first three
fields in little-endian order) as an argument named 'bytes_le', or a
single 128-bit integer as an argument named 'int'.
UUIDs have these read-only attributes:
bytes the UUID as a 16-byte string (containing the six
integer fields in big-endian byte order)
bytes_le the UUID as a 16-byte string (with time_low, time_mid,
and time_hi_version in little-endian byte order)
fields a tuple of the six integer fields of the UUID,
which are also available as six individual attributes
and two derived attributes:
time_low the first 32 bits of the UUID
time_mid the next 16 bits of the UUID
time_hi_version the next 16 bits of the UUID
clock_seq_hi_variant the next 8 bits of the UUID
clock_seq_low the next 8 bits of the UUID
node the last 48 bits of the UUID
time the 60-bit timestamp
clock_seq the 14-bit sequence number
hex the UUID as a 32-character hexadecimal string
int the UUID as a 128-bit integer
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variant the UUID variant (one of the constants RESERVED_NCS,
RFC_4122, RESERVED_MICROSOFT, or RESERVED_FUTURE)
version the UUID version number (1 through 5, meaningful only
when the variant is RFC_4122)
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integers (32-bit time_low, 16-bit time_mid, 16-bit time_hi_version,
8-bit clock_seq_hi_variant, 8-bit clock_seq_low, 48-bit node) as
the 'fields' argument, or a single 128-bit integer as the 'int'
argument. When a string of hex digits is given, curly braces,
hyphens, and a URN prefix are all optional. For example, these
expressions all yield the same UUID:
UUID('{12345678-1234-5678-1234-567812345678}')
UUID('12345678123456781234567812345678')
UUID('urn:uuid:12345678-1234-5678-1234-567812345678')
UUID(bytes='\x12\x34\x56\x78'*4)
UUID(bytes_le='\x78\x56\x34\x12\x34\x12\x78\x56' +
'\x12\x34\x56\x78\x12\x34\x56\x78')
UUID(fields=(0x12345678, 0x1234, 0x5678, 0x12, 0x34, 0x567812345678))
UUID(int=0x12345678123456781234567812345678)
Exactly one of 'hex', 'bytes', 'bytes_le', 'fields', or 'int' must
be given. The 'version' argument is optional; if given, the resulting
UUID will have its variant and version set according to RFC 4122,
overriding the given 'hex', 'bytes', 'bytes_le', 'fields', or 'int'.
is_safe is an enum exposed as an attribute on the instance. It
indicates whether the UUID has been generated in a way that is safe
for multiprocessing applications, via uuid_generate_time_safe(3).
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e!�Z$dS )/aq Generic socket server classes.
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For socket-based servers:
- address family:
- AF_INET{,6}: IP (Internet Protocol) sockets (default)
- AF_UNIX: Unix domain sockets
- others, e.g. AF_DECNET are conceivable (see <socket.h>
- socket type:
- SOCK_STREAM (reliable stream, e.g. TCP)
- SOCK_DGRAM (datagrams, e.g. UDP)
For request-based servers (including socket-based):
- client address verification before further looking at the request
(This is actually a hook for any processing that needs to look
at the request before anything else, e.g. logging)
- how to handle multiple requests:
- synchronous (one request is handled at a time)
- forking (each request is handled by a new process)
- threading (each request is handled by a new thread)
The classes in this module favor the server type that is simplest to
write: a synchronous TCP/IP server. This is bad class design, but
saves some typing. (There's also the issue that a deep class hierarchy
slows down method lookups.)
There are five classes in an inheritance diagram, four of which represent
synchronous servers of four types:
+------------+
| BaseServer |
+------------+
|
v
+-----------+ +------------------+
| TCPServer |------->| UnixStreamServer |
+-----------+ +------------------+
|
v
+-----------+ +--------------------+
| UDPServer |------->| UnixDatagramServer |
+-----------+ +--------------------+
Note that UnixDatagramServer derives from UDPServer, not from
UnixStreamServer -- the only difference between an IP and a Unix
stream server is the address family, which is simply repeated in both
unix server classes.
Forking and threading versions of each type of server can be created
using the ForkingMixIn and ThreadingMixIn mix-in classes. For
instance, a threading UDP server class is created as follows:
class ThreadingUDPServer(ThreadingMixIn, UDPServer): pass
The Mix-in class must come first, since it overrides a method defined
in UDPServer! Setting the various member variables also changes
the behavior of the underlying server mechanism.
To implement a service, you must derive a class from
BaseRequestHandler and redefine its handle() method. You can then run
various versions of the service by combining one of the server classes
with your request handler class.
The request handler class must be different for datagram or stream
services. This can be hidden by using the request handler
subclasses StreamRequestHandler or DatagramRequestHandler.
Of course, you still have to use your head!
For instance, it makes no sense to use a forking server if the service
contains state in memory that can be modified by requests (since the
modifications in the child process would never reach the initial state
kept in the parent process and passed to each child). In this case,
you can use a threading server, but you will probably have to use
locks to avoid two requests that come in nearly simultaneous to apply
conflicting changes to the server state.
On the other hand, if you are building e.g. an HTTP server, where all
data is stored externally (e.g. in the file system), a synchronous
class will essentially render the service "deaf" while one request is
being handled -- which may be for a very long time if a client is slow
to read all the data it has requested. Here a threading or forking
server is appropriate.
In some cases, it may be appropriate to process part of a request
synchronously, but to finish processing in a forked child depending on
the request data. This can be implemented by using a synchronous
server and doing an explicit fork in the request handler class
handle() method.
Another approach to handling multiple simultaneous requests in an
environment that supports neither threads nor fork (or where these are
too expensive or inappropriate for the service) is to maintain an
explicit table of partially finished requests and to use a selector to
decide which request to work on next (or whether to handle a new
incoming request). This is particularly important for stream services
where each client can potentially be connected for a long time (if
threads or subprocesses cannot be used).
Future work:
- Standard classes for Sun RPC (which uses either UDP or TCP)
- Standard mix-in classes to implement various authentication
and encryption schemes
XXX Open problems:
- What to do with out-of-band data?
BaseServer:
- split generic "request" functionality out into BaseServer class.
Copyright (C) 2000 Luke Kenneth Casson Leighton <lkcl@samba.org>
example: read entries from a SQL database (requires overriding
get_request() to return a table entry from the database).
entry is processed by a RequestHandlerClass.
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- handle_timeout()
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- server_close()
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- shutdown_request(request)
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Methods for derived classes:
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Class variables that may be overridden by derived classes or
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Nc C s || _ || _t�� | _d| _dS )�/Constructor. May be extended, do not override.FN)�server_address�RequestHandlerClass� threadingZEvent�_BaseServer__is_shut_down� _BaseServer__shutdown_request)�selfr r � r �$/usr/lib64/python3.8/socketserver.py�__init__� s
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Tr r@ r r r r; M s zBaseServer.verify_requestc C s | � ||� | �|� dS )zVCall finish_request.
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N)�finish_requestr? r@ r r r r< U s zBaseServer.process_requestc C s dS �zDCalled to clean-up the server.
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Nr r" r r r � server_close^ s zBaseServer.server_closec C s | � ||| � dS )z8Finish one request by instantiating RequestHandlerClass.N)r r@ r r r rC f s zBaseServer.finish_requestc C s | � |� dS �z3Called to shutdown and close an individual request.N��
close_request�r rA r r r r? j s zBaseServer.shutdown_requestc C s dS �z)Called to clean up an individual request.Nr rI r r r rH n s zBaseServer.close_requestc C s@ t dtjd� t d|tjd� ddl}|�� t dtjd� dS )ztHandle an error gracefully. May be overridden.
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Example:
>>> import smtplib
>>> s=smtplib.SMTP("localhost")
>>> print(s.help())
This is Sendmail version 8.8.4
Topics:
HELO EHLO MAIL RCPT DATA
RSET NOOP QUIT HELP VRFY
EXPN VERB ETRN DSN
For more info use "HELP <topic>".
To report bugs in the implementation send email to
sendmail-bugs@sendmail.org.
For local information send email to Postmaster at your site.
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>>> s.putcmd("vrfy","someone@here")
>>> s.getreply()
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does_esmtp
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esmtp_features
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command. Otherwise, the local hostname is found using
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|| _ |s||�d�|�d�kr||�d�}|dkr||d|� ||d d� }}z t|�}W n tk
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� \}}| jdkr�| �dt|�� ||fS )ap Connect to a host on a given port.
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C sP g }| j dkr | j�d�| _ z| j �td �}W n: tk
rj } z | �� tdt|� ��W 5 d}~X Y nX |s�| �� td��| j dkr�| �
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d||f � ||fS )a� Get a reply from the server.
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C sH i | _ | �| j|p| j� | �� \}}|dkrJt|�dkrJ| �� td��|| _|dkr`||fS d| _ t
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but the SMTPUTF8 extension is not supported by
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Automatically quotes lines beginning with a period per rfc821.
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If there has been no previous EHLO or HELO command this session, this
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This method may raise the following exceptions:
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t ||f� ��qf|d kr�||fS t
||��dS ) a� Authentication command - requires response processing.
'mechanism' specifies which authentication mechanism is to
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data = authobject(challenge)
It will be called to process the server's challenge response; the
challenge argument it is passed will be a bytes. It should return
an ASCII string that will be base64 encoded and sent to the server.
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auth_plain� s zSMTP.auth_plainc C s" |dks| j dk r| jS | jS dS )ze Authobject to use with LOGIN authentication. Requires self.user and
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auth_login� s zSMTP.auth_loginc s� | � � | �d�std��| jd �� � dddg}� fdd�|D �}|sPtd��|| | _| _|D ]t}d |�� � d
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The arguments are:
- user: The user name to authenticate with.
- password: The password for the authentication.
Keyword arguments:
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to the AUTH command, if the authentication methods supports it.
If there has been no previous EHLO or HELO command this session, this
method tries ESMTP EHLO first.
This method will return normally if the authentication was successful.
This method may raise the following exceptions:
SMTPHeloError The server didn't reply properly to
the helo greeting.
SMTPAuthenticationError The server didn't accept the username/
password combination.
SMTPNotSupportedError The AUTH command is not supported by the
server.
SMTPException No suitable authentication method was
found.
r� z,SMTP AUTH extension not supported by server.zCRAM-MD5ZPLAINZLOGINc s g | ]}|� kr|�qS r r )r� r� �Zadvertised_authlistr r �
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t||��||fS )a� Puts the connection to the SMTP server into TLS mode.
If there has been no previous EHLO or HELO command this session, this
method tries ESMTP EHLO first.
If the server supports TLS, this will encrypt the rest of the SMTP
session. If you provide the keyfile and certfile parameters,
the identity of the SMTP server and client can be checked. This,
however, depends on whether the socket module really checks the
certificates.
This method may raise the following exceptions:
SMTPHeloError The server didn't reply properly to
the helo greeting.
�starttlsz+STARTTLS extension not supported by server.ZSTARTTLSr; z&No SSL support included in this PythonN�4context and keyfile arguments are mutually exclusive�5context and certfile arguments are mutually exclusiver �Akeyfile and certfile are deprecated, use a custom context insteadr� ��certfile�keyfile�Zserver_hostname)r� r� r rL � _have_ssl� RuntimeErrorrb �warnings�warn�DeprecationWarning�ssl�_create_stdlib_context� wrap_socketrf r= rR r� r� r? r� r )r r� r� �contextr� Zreplyr� r r r r� � sB
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S )a| This command performs an entire mail transaction.
The arguments are:
- from_addr : The address sending this mail.
- to_addrs : A list of addresses to send this mail to. A bare
string will be treated as a list with 1 address.
- msg : The message to send.
- mail_options : List of ESMTP options (such as 8bitmime) for the
mail command.
- rcpt_options : List of ESMTP options (such as DSN commands) for
all the rcpt commands.
msg may be a string containing characters in the ASCII range, or a byte
string. A string is encoded to bytes using the ascii codec, and lone
\r and \n characters are converted to \r\n characters.
If there has been no previous EHLO or HELO command this session, this
method tries ESMTP EHLO first. If the server does ESMTP, message size
and each of the specified options will be passed to it. If EHLO
fails, HELO will be tried and ESMTP options suppressed.
This method will return normally if the mail is accepted for at least
one recipient. It returns a dictionary, with one entry for each
recipient that was refused. Each entry contains a tuple of the SMTP
error code and the accompanying error message sent by the server.
This method may raise the following exceptions:
SMTPHeloError The server didn't reply properly to
the helo greeting.
SMTPRecipientsRefused The server rejected ALL recipients
(no mail was sent).
SMTPSenderRefused The server didn't accept the from_addr.
SMTPDataError The server replied with an unexpected
error code (other than a refusal of
a recipient).
SMTPNotSupportedError The mail_options parameter includes 'SMTPUTF8'
but the SMTPUTF8 extension is not supported by
the server.
Note: the connection will be open even after an exception is raised.
Example:
>>> import smtplib
>>> s=smtplib.SMTP("localhost")
>>> tolist=["one@one.org","two@two.org","three@three.org","four@four.org"]
>>> msg = '''\
... From: Me@my.org
... Subject: testin'...
...
... This is a test '''
>>> s.sendmail("me@my.org",tolist,msg)
{ "three@three.org" : ( 550 ,"User unknown" ) }
>>> s.quit()
In the above example, the message was accepted for delivery to three
of the four addresses, and one was rejected, with the error code
550. If all addresses are accepted, then the method will return an
empty dictionary.
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The arguments are as for sendmail, except that msg is an
email.message.Message object. If from_addr is None or to_addrs is
None, these arguments are taken from the headers of the Message as
described in RFC 2822 (a ValueError is raised if there is more than
one set of 'Resent-' headers). Regardless of the values of from_addr and
to_addr, any Bcc field (or Resent-Bcc field, when the Message is a
resent) of the Message object won't be transmitted. The Message
object is then serialized using email.generator.BytesGenerator and
sendmail is called to transmit the message. If the sender or any of
the recipient addresses contain non-ASCII and the server advertises the
SMTPUTF8 capability, the policy is cloned with utf8 set to True for the
serialization, and SMTPUTF8 and BODY=8BITMIME are asserted on the send.
If the server does not support SMTPUTF8, an SMTPNotSupported error is
raised. Otherwise the generator is called without modifying the
policy.
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SMTP.closec C s. | � d�}d | _| _i | _d| _| �� |S )zTerminate the SMTP session.�quitNF)rL r� r� r? r� rD )r �resr r r r� � s
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host) is used. If port is omitted, the standard SMTP-over-SSL port
(465) is used. local_hostname and source_address have the same meaning
as they do in the SMTP class. keyfile and certfile are also optional -
they can contain a PEM formatted private key and certificate chain file
for the SSL connection. context also optional, can contain a
SSLContext, and is an alternative to keyfile and certfile; If it is
specified both keyfile and certfile must be None.
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LMTP, so our connect() method must support that as well as a regular
host:port server. local_hostname and source_address have the same
meaning as they do in the SMTP class. To specify a Unix socket,
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Based on RFC 2060.
Public class: IMAP4
Public variable: Debug
Public functions: Internaldate2tuple
Int2AP
ParseFlags
Time2Internaldate
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GETANNOTATION�GETQUOTA� GETQUOTAROOT�MYRIGHTS�LIST�LOGINr �LSUBZMOVE� NAMESPACE�NOOP�PARTIAL� PROXYAUTH�RENAME�SEARCH�SELECT�SETACL�
SETANNOTATION�SETQUOTA�SORT�STARTTLS�STATUS�STORE� SUBSCRIBE�THREAD�UID� UNSUBSCRIBEs \+( (?P<data>.*))?s .*FLAGS \((?P<flags>[^\)]*)\)s� .*INTERNALDATE "(?P<day>[ 0123][0-9])-(?P<mon>[A-Z][a-z][a-z])-(?P<year>[0-9][0-9][0-9][0-9]) (?P<hour>[0-9][0-9]):(?P<min>[0-9][0-9]):(?P<sec>[0-9][0-9]) (?P<zonen>[-+])(?P<zoneh>[0-9][0-9])(?P<zonem>[0-9][0-9])"s .*{(?P<size>\d+)}$s
\r\n|\r|\ns% \[(?P<type>[A-Z-]+)( (?P<data>.*))?\]s$ \* (?P<type>[A-Z-]+)( (?P<data>.*))?s3 \* (?P<data>\d+) (?P<type>[A-Z-]+)( (?P<data2>.*))?c @ s� e Zd ZdZG dd� de�ZG dd� de�ZG dd� de�Zdefd d
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dd� Zdd� Zdd� Zdefdd�Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Z d1d2� Z d3d4� Z d5d6� Z d7d8� Z d9d:� Z!d;d<� Z"d=d>� Z#d?d@� Z$dAdB� Z%dCdD� Z&dEdF� Z'dGdH� Z(d�dKdL�Z)dMdN� Z*dOdP� Z+dQdR� Z,dSdT� Z-d�dUdV�Z.dWdX� Z/dYdZ� Z0d[d\� Z1d]d^� Z2d_d`� Z3dadb� Z4dcdd� Z5d�dgdh�Z6didj� Z7dkdl� Z8dmdn� Z9dodp� Z:d�drds�Z;dtdu� Z<dvdw� Z=dxdy� Z>dzd{� Z?d|d}� Z@d~d� ZAd�d�� ZBd�d�� ZCd�d�� ZDd�d�� ZEd�d�� ZFd�d�� ZGd�d�� ZHd�d�d��ZId�d�� ZJd�d�� ZKd�d�� ZLd�d�� ZMd�d�� ZNd�d�� ZOd�d�d��ZPd�d�� ZQd�d�� ZRd�d�� ZSdqS )�r a� IMAP4 client class.
Instantiate with: IMAP4([host[, port]])
host - host's name (default: localhost);
port - port number (default: standard IMAP4 port).
All IMAP4rev1 commands are supported by methods of the same
name (in lower-case).
All arguments to commands are converted to strings, except for
AUTHENTICATE, and the last argument to APPEND which is passed as
an IMAP4 literal. If necessary (the string contains any
non-printing characters or white-space and isn't enclosed with
either parentheses or double quotes) each string is quoted.
However, the 'password' argument to the LOGIN command is always
quoted. If you want to avoid having an argument string quoted
(eg: the 'flags' argument to STORE) then enclose the string in
parentheses (eg: "(\Deleted)").
Each command returns a tuple: (type, [data, ...]) where 'type'
is usually 'OK' or 'NO', and 'data' is either the text from the
tagged response, or untagged results from command. Each 'data'
is either a string, or a tuple. If a tuple, then the first part
is the header of the response, and the second part contains
the data (ie: 'literal' value).
Errors raise the exception class <instance>.error("<reason>").
IMAP4 server errors raise <instance>.abort("<reason>"),
which is a sub-class of 'error'. Mailbox status changes
from READ-WRITE to READ-ONLY raise the exception class
<instance>.readonly("<reason>"), which is a sub-class of 'abort'.
"error" exceptions imply a program error.
"abort" exceptions imply the connection should be reset, and
the command re-tried.
"readonly" exceptions imply the command should be re-tried.
Note: to use this module, you must read the RFCs pertaining to the
IMAP4 protocol, as the semantics of the arguments to each IMAP4
command are left to the invoker, not to mention the results. Also,
most IMAP servers implement a sub-set of the commands available here.
c @ s e Zd ZdS )z IMAP4.errorN��__name__�
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r� Y nX � Y nX d S )Nr rB Fr )�Debug�debug�state�literal�tagged_commands�untagged_responses�continuation_response� is_readonly�tagnum�_tls_established� _mode_ascii�open�_connect� Exception�shutdown�OSError��self�host�portr= r= r> �__init__� s& zIMAP4.__init__c C s0 d| _ d| _t�ttj�| _t�ttj�| _d S )NF�ascii) � utf8_enabled� _encoding�re�compile�_Literal�ASCII�Literal�_Untagged_status�Untagged_status�rT r= r= r> rM � s zIMAP4._mode_asciic C s( d| _ d| _t�t�| _t�t�| _d S )NT�utf-8)rY rZ r[ r\ r] r_ r` ra rb r= r= r> �
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zIMAP4._connectc C s& |t krt| |�� �S td| ��d S )NzUnknown IMAP4 command: '%s')�Commands�getattr�lower�AttributeError)rT �attrr= r= r> � __getattr__ s zIMAP4.__getattr__c C s | S �Nr= rb r= r= r> � __enter__ s zIMAP4.__enter__c G s4 | j dkrd S z | �� W n tk
r. Y nX d S )Nr )rE �logoutrR )rT �argsr= r= r> �__exit__ s
zIMAP4.__exit__c C s4 | j s
d n| j }t�d| | j | j� t�|| jf�S )Nz imaplib.open)rU �sys�auditrV �socketZcreate_connection)rT rU r= r= r> �_create_socket s zIMAP4._create_socketc C s( || _ || _| �� | _| j�d�| _dS )z�Setup connection to remote server on "host:port"
(default: localhost:standard IMAP4 port).
This connection will be used by the routines:
read, readline, send, shutdown.
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z
IMAP4.openc C s | j �|�S �z Read 'size' bytes from remote.)r� �read�rT �sizer= r= r> r� 3 s z
IMAP4.readc C s. | j �td �}t|�tkr*| �dt ��|S )�Read line from remote.rf zgot more than %d bytes)r� �readline�_MAXLINE�lenr? �rT �liner= r= r> r� 8 s zIMAP4.readlinec C s t �d| |� | j�|� dS )�Send data to remote.z imaplib.sendN)r� r� r� Zsendall�rT �datar= r= r> �send@ s z
IMAP4.sendc
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r^ } z"|jtjkrNt |dd�dkrN� W 5 d}~X Y nX W 5 | j�� X dS )� Close I/O established in "open".Zwinerrorr i&' N)
r� �closer� rQ r� Z SHUT_RDWRrR �errnoZENOTCONNrx )rT �excr= r= r> rQ F s
�zIMAP4.shutdownc C s | j S )zfReturn socket instance used to connect to IMAP4 server.
socket = <instance>.socket()
)r� rb r= r= r> r� V s z IMAP4.socketc C sB d}| � ddg|�\}}|d r(||fS | �� \}}| � |||�S )a Return most recent 'RECENT' responses if any exist,
else prompt server for an update using the 'NOOP' command.
(typ, [data]) = <instance>.recent()
'data' is None if no new messages,
else list of RECENT responses, most recent last.
ZRECENTrg N���)�_untagged_response�noop�rT �name�typ�datr= r= r> �recentb s z IMAP4.recentc C s | � |dg|�� �S )z�Return data for response 'code' if received, or None.
Old value for response 'code' is cleared.
(code, [data]) = <instance>.response(code)
N)r� �upper)rT �coder= r= r> �responses s zIMAP4.responsec C sx d}|s d}|r.|d |d fdkr2d| }nd}|r@t |�}nd}t�t|�}| jrbd| d }|| _| �||||�S )
z�Append message to named mailbox.
(typ, [data]) = <instance>.append(mailbox, flags, date_time, message)
All args except `message' can be None.
r �INBOXr r� ��(�)�(%s)Ns UTF8 (� ))r �MapCRLF�sub�CRLFrY rF �_simple_command)rT �mailbox�flags� date_time�messager� rF r= r= r> �append� s
z IMAP4.appendc C sP |� � }t|�j| _| �d|�\}}|dkrB| �|d �dd���d| _||fS )as Authenticate command - requires response processing.
'mechanism' specifies which authentication mechanism is to
be used - it must appear in <instance>.capabilities in the
form AUTH=<mechanism>.
'authobject' must be a callable object:
data = authobject(response)
It will be called to process server continuation responses; the
response argument it is passed will be a bytes. It should return bytes
data that will be base64 encoded and sent to the server. It should
return None if the client abort response '*' should be sent instead.
r rg r� rc �replacer )r� �_Authenticator�processrF r� r? �decoderE )rT Z mechanismZ
authobject�mechr� r� r= r= r> � authenticate� s zIMAP4.authenticatec C s d}| � |�\}}| �|||�S )zT(typ, [data]) = <instance>.capability()
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capability� s zIMAP4.capabilityc C s
| � d�S )zRCheckpoint mailbox on server.
(typ, [data]) = <instance>.check()
r �r� rb r= r= r> �check� s z IMAP4.checkc C s$ z| �d�\}}W 5 d| _ X ||fS )z�Close currently selected mailbox.
Deleted messages are removed from writable mailbox.
This is the recommended command before 'LOGOUT'.
(typ, [data]) = <instance>.close()
r r )rE r� �rT r� r� r= r= r> r� � s z IMAP4.closec C s | � d||�S )z�Copy 'message_set' messages onto end of 'new_mailbox'.
(typ, [data]) = <instance>.copy(message_set, new_mailbox)
r r� )rT � message_setZ new_mailboxr= r= r> �copy� s z
IMAP4.copyc C s | � d|�S )zPCreate new mailbox.
(typ, [data]) = <instance>.create(mailbox)
r r� �rT r� r= r= r> �create� s z IMAP4.createc C s | � d|�S )zPDelete old mailbox.
(typ, [data]) = <instance>.delete(mailbox)
r r� r� r= r= r> �delete� s z IMAP4.deletec C s | � d||�S )z�Delete the ACLs (remove any rights) set for who on mailbox.
(typ, [data]) = <instance>.deleteacl(mailbox, who)
r r� )rT r� �whor= r= r> � deleteacl� s zIMAP4.deleteaclc C sH d| j krt�d��| �d|�\}}|dkr@d|�� kr@| �� ||fS )zkSend an RFC5161 enable string to the server.
(typ, [data]) = <intance>.enable(capability)
r z Server does not support ENABLErg z UTF8=ACCEPT)rs r r? r� r� rd )rT r� r� r� r= r= r> �enable� s
z IMAP4.enablec C s d}| � |�\}}| �|||�S )z�Permanently remove deleted items from selected mailbox.
Generates 'EXPUNGE' response for each deleted message.
(typ, [data]) = <instance>.expunge()
'data' is list of 'EXPUNGE'd message numbers in order received.
r r� r� r= r= r> �expunge s z
IMAP4.expungec C s$ d}| � |||�\}}| �|||�S )a# Fetch (parts of) messages.
(typ, [data, ...]) = <instance>.fetch(message_set, message_parts)
'message_parts' should be a string of selected parts
enclosed in parentheses, eg: "(UID BODY[TEXT])".
'data' are tuples of message part envelope and data.
r r� )rT r� Z
message_partsr� r� r� r= r= r> �fetch s
z IMAP4.fetchc C s | � d|�\}}| �||d�S )zXGet the ACLs for a mailbox.
(typ, [data]) = <instance>.getacl(mailbox)
r ZACLr� �rT r� r� r� r= r= r> �getacl s z IMAP4.getaclc C s" | � d|||�\}}| �||d�S )za(typ, [data]) = <instance>.getannotation(mailbox, entry, attribute)
Retrieve ANNOTATIONs.r �
ANNOTATIONr� )rT r� �entryZ attributer� r� r= r= r> �
getannotation( s zIMAP4.getannotationc C s | � d|�\}}| �||d�S )z�Get the quota root's resource usage and limits.
Part of the IMAP4 QUOTA extension defined in rfc2087.
(typ, [data]) = <instance>.getquota(root)
r! �QUOTAr� )rT �rootr� r� r= r= r> �getquota0 s zIMAP4.getquotac C s@ | � d|�\}}| �||d�\}}| �||d�\}}|||gfS )z�Get the list of quota roots for the named mailbox.
(typ, [[QUOTAROOT responses...], [QUOTA responses]]) = <instance>.getquotaroot(mailbox)
r" r� Z QUOTAROOTr� )rT r� r� r� ZquotaZ quotarootr= r= r> � getquotaroot; s zIMAP4.getquotaroot�""�*c C s$ d}| � |||�\}}| �|||�S )z�List mailbox names in directory matching pattern.
(typ, [data]) = <instance>.list(directory='""', pattern='*')
'data' is list of LIST responses.
r$ r� �rT Z directory�patternr� r� r� r= r= r> �listF s z
IMAP4.listc C s< | � d|| �|��\}}|dkr.| �|d ��d| _||fS )z�Identify client using plaintext password.
(typ, [data]) = <instance>.login(user, password)
NB: 'password' will be quoted.
r% rg r� r )r� �_quoter? rE )rT �user�passwordr� r� r= r= r> �loginR s
z IMAP4.loginc C s || | _ | _| �d| j�S )zr Force use of CRAM-MD5 authentication.
(typ, [data]) = <instance>.login_cram_md5(user, password)
zCRAM-MD5)r� r� r� �_CRAM_MD5_AUTH)rT r� r� r= r= r> �login_cram_md5` s zIMAP4.login_cram_md5c C sB ddl }t| jt�r | j�d�n| j}| jd |�||d��� S )z1 Authobject to use with CRAM-MD5 authentication. r Nrc � Zmd5)�hmac�
isinstancer� �str�encoder� ZHMACZ hexdigest)rT Z challenger� �pwdr= r= r> r� i s
�zIMAP4._CRAM_MD5_AUTHc C s$ d| _ | �d�\}}| �� ||fS )z|Shutdown connection to server.
(typ, [data]) = <instance>.logout()
Returns server 'BYE' response.
r )rE r� rQ r� r= r= r> r q s z IMAP4.logoutc C s$ d}| � |||�\}}| �|||�S )z�List 'subscribed' mailbox names in directory matching pattern.
(typ, [data, ...]) = <instance>.lsub(directory='""', pattern='*')
'data' are tuples of message part envelope and data.
r& r� r� r= r= r> �lsub~ s z
IMAP4.lsubc C s | � d|�\}}| �||d�S )z�Show my ACLs for a mailbox (i.e. the rights that I have on mailbox).
(typ, [data]) = <instance>.myrights(mailbox)
r# r� r� r= r= r> �myrights� s zIMAP4.myrightsc C s d}| � |�\}}| �|||�S )zb Returns IMAP namespaces ala rfc2342
(typ, [data, ...]) = <instance>.namespace()
r' r� r� r= r= r> � namespace� s zIMAP4.namespacec C s | j dkr| �| j� | �d�S )zFSend NOOP command.
(typ, [data]) = <instance>.noop()
rh r( )rD �_dump_urrH r� rb r= r= r> r� � s
z
IMAP4.noopc C s( d}| � |||||�\}}| �||d�S )z�Fetch truncated part of a message.
(typ, [data, ...]) = <instance>.partial(message_num, message_part, start, length)
'data' is tuple of message part envelope and data.
r) r r� )rT Z message_numZ message_part�startZlengthr� r� r� r= r= r> �partial� s z
IMAP4.partialc C s d}| � d|�S )z�Assume authentication as "user".
Allows an authorised administrator to proxy into any user's
mailbox.
(typ, [data]) = <instance>.proxyauth(user)
r* r� )rT r� r� r= r= r> � proxyauth� s zIMAP4.proxyauthc C s | � d||�S )zkRename old mailbox name to new.
(typ, [data]) = <instance>.rename(oldmailbox, newmailbox)
r+ r� )rT Z
oldmailboxZ
newmailboxr= r= r> �rename� s z IMAP4.renamec G sT d}|r2| j rt�d��| j|d|f|�� \}}n| j|f|�� \}}| �|||�S )z�Search mailbox for matching messages.
(typ, [data]) = <instance>.search(charset, criterion, ...)
'data' is space separated list of matching message numbers.
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r, z'Non-None charset not valid in UTF8 mode�CHARSET)rY r r? r� r� )rT �charsetZcriteriar� r� r� r= r= r> �search� s
z IMAP4.searchr� Fc C s� i | _ || _|rd}nd}| �||�\}}|dkr@d| _||fS d| _d| j krx|sx| jdkrj| �| j � | �d| ��|| j �d d
g�fS ) at Select a mailbox.
Flush all untagged responses.
(typ, [data]) = <instance>.select(mailbox='INBOX', readonly=False)
'data' is count of messages in mailbox ('EXISTS' response).
Mandated responses are ('FLAGS', 'EXISTS', 'RECENT', 'UIDVALIDITY'), so
other responses should be obtained via <instance>.response('FLAGS') etc.
r r- rg r r � READ-ONLYrf z%s is not writable�EXISTSN)rH rJ r� rE rD r� rA �get)rT r� rA r� r� r� r= r= r> �select� s"
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z IMAP4.selectc C s | � d|||�S )zZSet a mailbox acl.
(typ, [data]) = <instance>.setacl(mailbox, who, what)
r. r� )rT r� r� Zwhatr= r= r> �setacl� s z IMAP4.setaclc G s | j d|�� \}}| �||d�S )z_(typ, [data]) = <instance>.setannotation(mailbox[, entry, attribute]+)
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setannotation s zIMAP4.setannotationc C s | � d||�\}}| �||d�S )ziSet the quota root's resource limits.
(typ, [data]) = <instance>.setquota(root, limits)
r0 r� r� )rT r� Zlimitsr� r� r= r= r> �setquota s zIMAP4.setquotac G sF d}|d |d fdkr d| }| j |||f|�� \}}| �|||�S )z�IMAP4rev1 extension SORT command.
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r1 r r� r� r� r� )rT Z
sort_criteriar� �search_criteriar� r� r� r= r= r> �sort s
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Nr2 zSSL support missingz TLS session already establishedzTLS not supported by serverrg �Zserver_hostnamer� Tz Couldn't establish TLS session)�HAVE_SSLr? rL r@ rs �ssl�_create_stdlib_contextr� � wrap_socketr� rU r� r� rr r� )rT � ssl_contextr� r� r� r= r= r> �starttls s&
�
zIMAP4.starttlsc C s$ d}| � |||�\}}| �|||�S )zpRequest named status conditions for mailbox.
(typ, [data]) = <instance>.status(mailbox, names)
r3 r� )rT r� �namesr� r� r� r= r= r> �status7 s z IMAP4.statusc C s> |d |d fdkr d| }| � d|||�\}}| �||d�S )z�Alters flag dispositions for messages in mailbox.
(typ, [data]) = <instance>.store(message_set, command, flags)
r r� r� r� r4 r r� )rT r� �commandr� r� r� r= r= r> �storeC s z IMAP4.storec C s | � d|�S )zYSubscribe to new mailbox.
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�z_RLock.__repr__T���c C sD t � }| j|kr"| jd7 _dS | j�||�}|r@|| _d| _|S )a Acquire a lock, blocking or non-blocking.
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the recursion level to one, and return. If more than one thread is
blocked waiting until the lock is unlocked, only one at a time will be
able to grab ownership of the lock. There is no return value in this
case.
When invoked with the blocking argument set to true, do the same thing
as when called without arguments, and return true.
When invoked with the blocking argument set to false, do not block. If a
call without an argument would block, return false immediately;
otherwise, do the same thing as when called without arguments, and
return true.
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value, block for at most the number of seconds specified by timeout
and as long as the lock cannot be acquired. Return true if the lock has
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lock to become unlocked, allow exactly one of them to proceed. If after
the decrement the recursion level is still nonzero, the lock remains
locked and owned by the calling thread.
Only call this method when the calling thread owns the lock. A
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unlocked.
There is no return value.
� cannot release un-acquired lockr> N)r- r � RuntimeErrorr. r, �release)r0 r r" r" r# rF � s z_RLock.releasec C s | � � d S �N�rF �r0 �t�v�tbr" r" r# �__exit__� s z_RLock.__exit__c C s | j �� |\| _| _d S rG )r, r? r. r- )r0 �stater" r" r# �_acquire_restore� s
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Nc C s� |d krt � }|| _|j| _|j| _z |j| _W n tk
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zCondition._is_ownedc C s� | � � std��t� }|�� | j�|� | �� }d}z>|dkrN|�� d}n |dkrd|�d|�}n
|�d�}|W �S | �|� |s�z| j�|� W n t k
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variable in another thread, or until the optional timeout occurs. Once
awakened or timed out, it re-acquires the lock and returns.
When the timeout argument is present and not None, it should be a
floating point number specifying a timeout for the operation in seconds
(or fractions thereof).
When the underlying lock is an RLock, it is not released using its
release() method, since this may not actually unlock the lock when it
was acquired multiple times recursively. Instead, an internal interface
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Semaphores manage a counter representing the number of release() calls minus
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negative. If not given, value defaults to 1.
r> c C s& |dk rt d��tt� �| _|| _d S )Nr z$semaphore initial value must be >= 0)r_ r r �_cond�_value�r0 �valuer" r" r# r1 � s zSemaphore.__init__TNc C s� |s|dk rt d��d}d}| j�f | jdkrr|s4q�|dk rd|dkrPt� | }n|t� }|dkrdq�| j�|� q$| jd8 _d}W 5 Q R X |S )a� Acquire a semaphore, decrementing the internal counter by one.
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make it larger than zero. This is done with proper interlocking so that
if multiple acquire() calls are blocked, release() will wake exactly one
of them up. The implementation may pick one at random, so the order in
which blocked threads are awakened should not be relied on. There is no
return value in this case.
When invoked with blocking set to true, do the same thing as when called
without arguments, and return true.
When invoked with blocking set to false, do not block. If a call without
an argument would block, return false immediately; otherwise, do the
same thing as when called without arguments, and return true.
When invoked with a timeout other than None, it will block for at
most timeout seconds. If acquire does not complete successfully in
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zSemaphore.acquirec C s. | j � | jd7 _| j �� W 5 Q R X dS )z�Release a semaphore, incrementing the internal counter by one.
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- c @ s" e Zd ZdZddd�Zdd� ZdS ) r a� Implements a bounded semaphore.
A bounded semaphore checks to make sure its current value doesn't exceed its
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If the semaphore is released too many times it's a sign of a bug. If not
given, value defaults to 1.
Like regular semaphores, bounded semaphores manage a counter representing
the number of release() calls minus the number of acquire() calls, plus an
initial value. The acquire() method blocks if necessary until it can return
without making the counter negative. If not given, value defaults to 1.
r> c C s t �| |� || _d S rG )r r1 �_initial_valuerl r" r" r# r1 � s zBoundedSemaphore.__init__c C sB | j �2 | j| jkr td��| jd7 _| j �� W 5 Q R X dS )a6 Release a semaphore, incrementing the internal counter by one.
When the counter is zero on entry and another thread is waiting for it
to become larger than zero again, wake up that thread.
If the number of releases exceeds the number of acquires,
raise a ValueError.
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c @ sF e Zd ZdZdd� Zdd� Zdd� ZeZdd � Zd
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true. The flag is initially false.
c C s t t� �| _d| _d S )NF)r r rj �_flagr/ r" r" r# r1 � s zEvent.__init__c C s | j �t� � d S rG )rj r1 r r/ r" r" r# �_reset_internal_locks� s zEvent._reset_internal_locksc C s | j S )z5Return true if and only if the internal flag is true.)ro r/ r" r" r# �is_set s z Event.is_setc C s& | j � d| _| j �� W 5 Q R X dS )z�Set the internal flag to true.
All threads waiting for it to become true are awakened. Threads
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TN)rj ro ri r/ r" r" r# �set s z Event.setc C s | j � d| _W 5 Q R X dS )z�Reset the internal flag to false.
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C s8 | j �( | j}|s | j �|�}|W 5 Q R � S Q R X dS )aH Block until the internal flag is true.
If the internal flag is true on entry, return immediately. Otherwise,
block until another thread calls set() to set the flag to true, or until
the optional timeout occurs.
When the timeout argument is present and not None, it should be a
floating point number specifying a timeout for the operation in seconds
(or fractions thereof).
This method returns the internal flag on exit, so it will always return
True except if a timeout is given and the operation times out.
N)rj ro ra )r0 rA Zsignaledr" r" r# ra s
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Event.wait)N) rR r7 r8 rS r1 rp rq ZisSetrr rs ra r" r" r" r# r � s
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dd� �ZdS ) r z�Implements a Barrier.
Useful for synchronizing a fixed number of threads at known synchronization
points. Threads block on 'wait()' and are simultaneously awoken once they
have all made that call.
Nc C s. t t� �| _|| _|| _|| _d| _d| _dS )aW Create a barrier, initialised to 'parties' threads.
'action' is a callable which, when supplied, will be called by one of
the threads after they have all entered the barrier and just prior to
releasing them all. If a 'timeout' is provided, it is used as the
default for all subsequent 'wait()' calls.
r N)r r rj �_action�_timeout�_parties�_stater. )r0 �parties�actionrA r" r" r# r1 F s zBarrier.__init__c
C s� |dkr| j }| j�r | �� | j}| jd7 _z6|d | jkrL| �� n
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When the specified number of threads have started waiting, they are all
simultaneously awoken. If an 'action' was provided for the barrier, one
of the threads will have executed that callback prior to returning.
Returns an individual index number from 0 to 'parties-1'.
Nr> )ru rj �_enterr. �_exitrv �_release�_wait)r0 rA �indexr" r" r# ra V s
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zBarrier._enterc C s> z"| j r| � � d| _| j�� W n | �� � Y nX d S )Nr> )rt rw rj ri �_breakr/ r" r" r# r| s zBarrier._releasec sB � j �� fdd�|�s"� �� t�� jdk r0t�� jdks>t�d S )Nc s
� j dkS r* �rw r" r/ r" r# �<lambda>� � z Barrier._wait.<locals>.<lambda>r r> )rj re r� r rw r� �r0 rA r" r/ r# r} � s
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Barrier._exitc C sT | j �D | jdkr6| jdkr$d| _q<| jdkr<d| _nd| _| j �� W 5 Q R X dS )z�Reset the barrier to the initial state.
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Barrier.resetc C s | j � | �� W 5 Q R X dS )z�Place the barrier into a 'broken' state.
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N)rj r� r/ r" r" r# �abort� s z
Barrier.abortc C s d| _ | j�� d S )Nr� )rw rj ri r/ r" r" r# r� � s zBarrier._breakc C s | j S )z:Return the number of threads required to trip the barrier.)rv r/ r" r" r# rx � s zBarrier.partiesc C s | j dkr| jS dS )z>Return the number of threads currently waiting at the barrier.r )rw r. r/ r" r" r# � n_waiting� s
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c @ s e Zd ZdS )r N)rR r7 r8 r" r" r" r# r � s � Thread-%dc C s
| t � S rG )�_counter)�templater" r" r# �_newname� s r� c @ s e Zd ZdZdZd:dd�dd�Zdd � Zd
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dd� Zdd� Zdd� Zd d � Zd;d d �Zd<d"d#�Zed$d%� �Zejd&d%� �Zed'd(� �Ze r�ed)d*� �Zd+d,� Zd-d.� Zed/d0� �Zejd1d0� �Zd2d3� Z d4d5� Z d6d7� Z d8d9� Z dS )=r a A class that represents a thread of control.
This class can be safely subclassed in a limited fashion. There are two ways
to specify the activity: by passing a callable object to the constructor, or
by overriding the run() method in a subclass.
FNr" ��daemonc C s� |dkst d��|dkr i }|| _t|p,t� �| _|| _|| _|dk rN|| _n
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*group* should be None; reserved for future extension when a ThreadGroup
class is implemented.
*target* is the callable object to be invoked by the run()
method. Defaults to None, meaning nothing is called.
*name* is the thread name. By default, a unique name is constructed of
the form "Thread-N" where N is a small decimal number.
*args* is the argument tuple for the target invocation. Defaults to ().
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If a subclass overrides the constructor, it must make sure to invoke
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Nz#group argument must be None for nowFT)r� �_target�strr� �_name�_args�_kwargs� _daemonicr
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rU )r� a` Special type indicating an unconstrained type.
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)r� a Special type indicating functions that never return.
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a3 Special type construct to mark class variables.
An annotation wrapped in ClassVar indicates that a given
attribute is intended to be used as a class variable and
should not be set on instances of that class. Usage::
class Starship:
stats: ClassVar[Dict[str, int]] = {} # class variable
damage: int = 10 # instance variable
ClassVar accepts only types and cannot be further subscribed.
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a� Special typing construct to indicate final names to type checkers.
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MAX_SIZE: Final = 9000
MAX_SIZE += 1 # Error reported by type checker
class Connection:
TIMEOUT: Final[int] = 10
class FastConnector(Connection):
TIMEOUT = 1 # Error reported by type checker
There is no runtime checking of these properties.
a' Union type; Union[X, Y] means either X or Y.
To define a union, use e.g. Union[int, str]. Details:
- The arguments must be types and there must be at least one.
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type(None).
- Unions of unions are flattened, e.g.::
Union[Union[int, str], float] == Union[int, str, float]
- Unions of a single argument vanish, e.g.::
Union[int] == int # The constructor actually returns int
- Redundant arguments are skipped, e.g.::
Union[int, str, int] == Union[int, str]
- When comparing unions, the argument order is ignored, e.g.::
Union[int, str] == Union[str, int]
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zEOptional type.
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a� Special typing form to define literal types (a.k.a. value types).
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...
MODE = Literal['r', 'rb', 'w', 'wb']
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...
open_helper('/some/path', 'r') # Passes type check
open_helper('/other/path', 'typo') # Error in type checker
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as for generic function definitions. See class Generic for more
information on generic types. Generic functions work as follows:
def repeat(x: T, n: int) -> List[T]:
'''Return a list containing n references to x.'''
return [x]*n
def longest(x: A, y: A) -> A:
'''Return the longest of two strings.'''
return x if len(x) >= len(y) else y
The latter example's signature is essentially the overloading
of (str, str) -> str and (bytes, bytes) -> bytes. Also note
that if the arguments are instances of some subclass of str,
the return type is still plain str.
At runtime, isinstance(x, T) and issubclass(C, T) will raise TypeError.
Type variables defined with covariant=True or contravariant=True
can be used to declare covariant or contravariant generic types.
See PEP 484 for more details. By default generic types are invariant
in all type variables.
Type variables can be introspected. e.g.:
T.__name__ == 'T'
T.__constraints__ == ()
T.__covariant__ == False
T.__contravariant__ = False
A.__constraints__ == (str, bytes)
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r aC Abstract base class for generic types.
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class Mapping(Generic[KT, VT]):
def __getitem__(self, key: KT) -> VT:
...
# Etc.
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def lookup_name(mapping: Mapping[KT, VT], key: KT, default: VT) -> VT:
try:
return mapping[key]
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class C:
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class Base:
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U = TypeVar('U', bound=User)
def new_user(user_class: Type[U]) -> U:
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The resulting class has an extra __annotations__ attribute, giving a
dict that maps field names to types. (The field names are also in
the _fields attribute, which is part of the namedtuple API.)
Alternative equivalent keyword syntax is also accepted::
Employee = NamedTuple('Employee', name=str, id=int)
In Python versions <= 3.5 use::
Employee = NamedTuple('Employee', [('name', str), ('id', int)])
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t |d�s�||_ |S )ag Create new typed dict class object.
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TypedDict creates a dictionary type that expects all of its
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Usage::
class Point2D(TypedDict):
x: int
y: int
label: str
a: Point2D = {'x': 1, 'y': 2, 'label': 'good'} # OK
b: Point2D = {'z': 3, 'label': 'bad'} # Fails type check
assert Point2D(x=1, y=2, label='first') == dict(x=1, y=2, label='first')
The type info can be accessed via Point2D.__annotations__. TypedDict
supports two additional equivalent forms::
Point2D = TypedDict('Point2D', x=int, y=int, label=str)
Point2D = TypedDict('Point2D', {'x': int, 'y': int, 'label': str})
By default, all keys must be present in a TypedDict. It is possible
to override this by specifying totality.
Usage::
class point2D(TypedDict, total=False):
x: int
y: int
This means that a point2D TypedDict can have any of the keys omitted.A type
checker is only expected to support a literal False or True as the value of
the total argument. True is the default, and makes all items defined in the
class body be required.
The class syntax is only supported in Python 3.6+, while two other
syntax forms work for Python 2.7 and 3.2+
Nr% rZ rZ rZ r[ r> � s c C s dd� }| |_ ||_|S )a% NewType creates simple unique types with almost zero
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a dummy function that simply returns its argument. Usage::
UserId = NewType('UserId', int)
def name_by_id(user_id: UserId) -> str:
...
UserId('user') # Fails type check
name_by_id(42) # Fails type check
name_by_id(UserId(42)) # OK
num = UserId(5) + 1 # type: int
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d,�d-d.��Z eee dd/�d0d1��Z ed2d�d3d4��Z edd�d5d6��Z dS )<�IOa� Generic base class for TextIO and BinaryIO.
This is an abstract, generic version of the return of open().
NOTE: This does not distinguish between the different possible
classes (text vs. binary, read vs. write vs. read/write,
append-only, unbuffered). The TextIO and BinaryIO subclasses
below capture the distinctions between text vs. binary, which is
pervasive in the interface; however we currently do not offer a
way to track the other distinctions in the type system.
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Command-line parsing library
This module is an optparse-inspired command-line parsing library that:
- handles both optional and positional arguments
- produces highly informative usage messages
- supports parsers that dispatch to sub-parsers
The following is a simple usage example that sums integers from the
command-line and writes the result to a file::
parser = argparse.ArgumentParser(
description='sum the integers at the command line')
parser.add_argument(
'integers', metavar='int', nargs='+', type=int,
help='an integer to be summed')
parser.add_argument(
'--log', default=sys.stdout, type=argparse.FileType('w'),
help='the file where the sum should be written')
args = parser.parse_args()
args.log.write('%s' % sum(args.integers))
args.log.close()
The module contains the following public classes:
- ArgumentParser -- The main entry point for command-line parsing. As the
example above shows, the add_argument() method is used to populate
the parser with actions for optional and positional arguments. Then
the parse_args() method is invoked to convert the args at the
command-line into an object with attributes.
- ArgumentError -- The exception raised by ArgumentParser objects when
there are errors with the parser's actions. Errors raised while
parsing the command-line are caught by ArgumentParser and emitted
as command-line messages.
- FileType -- A factory for defining types of files to be created. As the
example above shows, instances of FileType are typically passed as
the type= argument of add_argument() calls.
- Action -- The base class for parser actions. Typically actions are
selected by passing strings like 'store_true' or 'append_const' to
the action= argument of add_argument(). However, for greater
customization of ArgumentParser actions, subclasses of Action may
be defined and passed as the action= argument.
- HelpFormatter, RawDescriptionHelpFormatter, RawTextHelpFormatter,
ArgumentDefaultsHelpFormatter -- Formatter classes which
may be passed as the formatter_class= argument to the
ArgumentParser constructor. HelpFormatter is the default,
RawDescriptionHelpFormatter and RawTextHelpFormatter tell the parser
not to change the formatting for help text, and
ArgumentDefaultsHelpFormatter adds information about argument defaults
to the help.
All other classes in this module are considered implementation details.
(Also note that HelpFormatter and RawDescriptionHelpFormatter are only
considered public as object names -- the API of the formatter objects is
still considered an implementation detail.)
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type, an exception will be raised if it is not a member of this
collection.
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Stuff to parse WAVE files.
Usage.
Reading WAVE files:
f = wave.open(file, 'r')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods read(), seek(), and close().
When the setpos() and rewind() methods are not used, the seek()
method is not necessary.
This returns an instance of a class with the following public methods:
getnchannels() -- returns number of audio channels (1 for
mono, 2 for stereo)
getsampwidth() -- returns sample width in bytes
getframerate() -- returns sampling frequency
getnframes() -- returns number of audio frames
getcomptype() -- returns compression type ('NONE' for linear samples)
getcompname() -- returns human-readable version of
compression type ('not compressed' linear samples)
getparams() -- returns a namedtuple consisting of all of the
above in the above order
getmarkers() -- returns None (for compatibility with the
aifc module)
getmark(id) -- raises an error since the mark does not
exist (for compatibility with the aifc module)
readframes(n) -- returns at most n frames of audio
rewind() -- rewind to the beginning of the audio stream
setpos(pos) -- seek to the specified position
tell() -- return the current position
close() -- close the instance (make it unusable)
The position returned by tell() and the position given to setpos()
are compatible and have nothing to do with the actual position in the
file.
The close() method is called automatically when the class instance
is destroyed.
Writing WAVE files:
f = wave.open(file, 'w')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods write(), tell(), seek(), and
close().
This returns an instance of a class with the following public methods:
setnchannels(n) -- set the number of channels
setsampwidth(n) -- set the sample width
setframerate(n) -- set the frame rate
setnframes(n) -- set the number of frames
setcomptype(type, name)
-- set the compression type and the
human-readable compression type
setparams(tuple)
-- set all parameters at once
tell() -- return current position in output file
writeframesraw(data)
-- write audio frames without patching up the
file header
writeframes(data)
-- write audio frames and patch up the file header
close() -- patch up the file header and close the
output file
You should set the parameters before the first writeframesraw or
writeframes. The total number of frames does not need to be set,
but when it is set to the correct value, the header does not have to
be patched up.
It is best to first set all parameters, perhaps possibly the
compression type, and then write audio frames using writeframesraw.
When all frames have been written, either call writeframes(b'') or
close() to patch up the sizes in the header.
The close() method is called automatically when the class instance
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_nchannels -- the number of audio channels
available through the getnchannels() method
_nframes -- the number of audio frames
available through the getnframes() method
_sampwidth -- the number of bytes per audio sample
available through the getsampwidth() method
_framerate -- the sampling frequency
available through the getframerate() method
_comptype -- the AIFF-C compression type ('NONE' if AIFF)
available through the getcomptype() method
_compname -- the human-readable AIFF-C compression type
available through the getcomptype() method
_soundpos -- the position in the audio stream
available through the tell() method, set through the
setpos() method
These variables are used internally only:
_fmt_chunk_read -- 1 iff the FMT chunk has been read
_data_seek_needed -- 1 iff positioned correctly in audio
file for readframes()
_data_chunk -- instantiation of a chunk class for the DATA chunk
_framesize -- size of one frame in the file
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set through the setcomptype() or setparams() method
_nchannels -- the number of audio channels
set through the setnchannels() or setparams() method
_sampwidth -- the number of bytes per audio sample
set through the setsampwidth() or setparams() method
_framerate -- the sampling frequency
set through the setframerate() or setparams() method
_nframes -- the number of audio frames written to the header
set through the setnframes() or setparams() method
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�r6 Y nX ed(k�rVd#d lZee�� � d S )+a� Heap queue algorithm (a.k.a. priority queue).
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non-existing elements are considered to be infinite. The interesting
property of a heap is that a[0] is always its smallest element.
Usage:
heap = [] # creates an empty heap
heappush(heap, item) # pushes a new item on the heap
item = heappop(heap) # pops the smallest item from the heap
item = heap[0] # smallest item on the heap without popping it
heapify(x) # transforms list into a heap, in-place, in linear time
item = heapreplace(heap, item) # pops and returns smallest item, and adds
# new item; the heap size is unchanged
Our API differs from textbook heap algorithms as follows:
- We use 0-based indexing. This makes the relationship between the
index for a node and the indexes for its children slightly less
obvious, but is more suitable since Python uses 0-based indexing.
- Our heappop() method returns the smallest item, not the largest.
These two make it possible to view the heap as a regular Python list
without surprises: heap[0] is the smallest item, and heap.sort()
maintains the heap invariant!
uo Heap queues
[explanation by François Pinard]
Heaps are arrays for which a[k] <= a[2*k+1] and a[k] <= a[2*k+2] for
all k, counting elements from 0. For the sake of comparison,
non-existing elements are considered to be infinite. The interesting
property of a heap is that a[0] is always its smallest element.
The strange invariant above is meant to be an efficient memory
representation for a tournament. The numbers below are `k', not a[k]:
0
1 2
3 4 5 6
7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
In the tree above, each cell `k' is topping `2*k+1' and `2*k+2'. In
a usual binary tournament we see in sports, each cell is the winner
over the two cells it tops, and we can trace the winner down the tree
to see all opponents s/he had. However, in many computer applications
of such tournaments, we do not need to trace the history of a winner.
To be more memory efficient, when a winner is promoted, we try to
replace it by something else at a lower level, and the rule becomes
that a cell and the two cells it tops contain three different items,
but the top cell "wins" over the two topped cells.
If this heap invariant is protected at all time, index 0 is clearly
the overall winner. The simplest algorithmic way to remove it and
find the "next" winner is to move some loser (let's say cell 30 in the
diagram above) into the 0 position, and then percolate this new 0 down
the tree, exchanging values, until the invariant is re-established.
This is clearly logarithmic on the total number of items in the tree.
By iterating over all items, you get an O(n ln n) sort.
A nice feature of this sort is that you can efficiently insert new
items while the sort is going on, provided that the inserted items are
not "better" than the last 0'th element you extracted. This is
especially useful in simulation contexts, where the tree holds all
incoming events, and the "win" condition means the smallest scheduled
time. When an event schedule other events for execution, they are
scheduled into the future, so they can easily go into the heap. So, a
heap is a good structure for implementing schedulers (this is what I
used for my MIDI sequencer :-).
Various structures for implementing schedulers have been extensively
studied, and heaps are good for this, as they are reasonably speedy,
the speed is almost constant, and the worst case is not much different
than the average case. However, there are other representations which
are more efficient overall, yet the worst cases might be terrible.
Heaps are also very useful in big disk sorts. You most probably all
know that a big sort implies producing "runs" (which are pre-sorted
sequences, which size is usually related to the amount of CPU memory),
followed by a merging passes for these runs, which merging is often
very cleverly organised[1]. It is very important that the initial
sort produces the longest runs possible. Tournaments are a good way
to that. If, using all the memory available to hold a tournament, you
replace and percolate items that happen to fit the current run, you'll
produce runs which are twice the size of the memory for random input,
and much better for input fuzzily ordered.
Moreover, if you output the 0'th item on disk and get an input which
may not fit in the current tournament (because the value "wins" over
the last output value), it cannot fit in the heap, so the size of the
heap decreases. The freed memory could be cleverly reused immediately
for progressively building a second heap, which grows at exactly the
same rate the first heap is melting. When the first heap completely
vanishes, you switch heaps and start a new run. Clever and quite
effective!
In a word, heaps are useful memory structures to know. I use them in
a few applications, and I think it is good to keep a `heap' module
around. :-)
--------------------
[1] The disk balancing algorithms which are current, nowadays, are
more annoying than clever, and this is a consequence of the seeking
capabilities of the disks. On devices which cannot seek, like big
tape drives, the story was quite different, and one had to be very
clever to ensure (far in advance) that each tape movement will be the
most effective possible (that is, will best participate at
"progressing" the merge). Some tapes were even able to read
backwards, and this was also used to avoid the rewinding time.
Believe me, real good tape sorts were quite spectacular to watch!
From all times, sorting has always been a Great Art! :-)
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inited -- flag set when init() has been called
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0r� c @ s e Zd ZdZdS )� _AccessorzjAn accessor implements a particular (system-specific or not) way of
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r� c C sR | d }| dd � }|dkr"t }n$d|kr4td��nt|�rBt}nt}||||�S )Nr rB �**z:Invalid pattern: '**' can only be an entire path component)�_RecursiveWildcardSelector�
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r� � lru_cachec @ s e Zd ZdZdd� Zdd� ZdS )� _SelectorzYA selector matches a specific glob pattern part against the children
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|V d S r* r! )r. r� r� r� r� r! r! r" r� � s z!_TerminatingSelector._select_fromN)rE rF rG r� r! r! r! r" r� � s r� c @ s e Zd Zdd� Zdd� ZdS )r� c C s || _ t�| ||� d S r* )r� r� r/ )r. r� r� r� r! r! r" r/ s z_PreciseSelector.__init__c c s\ z@|� | j�}| jr|n||�r>| j�||||�D ]
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rV Y d S X d S r* )�_make_child_relpathr� r� r� r� �PermissionError)r. r� r� r� r� rs ra r! r! r" r� s z _PreciseSelector._select_fromN�rE rF rG r/ r� r! r! r! r" r� � s r� c @ s e Zd Zdd� Zdd� ZdS )r� c C s |� |�| _t�| ||� d S r* )rm �matchr� r/ �r. r' r� r� r! r! r" r/ s z_WildcardSelector.__init__c c s� z�||��}t |�}W 5 Q R X |D ]�}| jrrz|�� s:W q"W n4 tk
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rx Y d S X d S r* )r� �clearr� r� r� �addr� ) r. r� r� r� r� ZyieldedZsuccessor_selectZstarting_pointra r! r! r" r� E s z'_RecursiveWildcardSelector._select_fromN)rE rF rG r/ r� r� r! r! r! r" r� - s r� c @ s4 e Zd ZdZdZdd� Zdd� Zdd� Zd d
� Zd S ) � _PathParentszvThis object provides sequence-like access to the logical ancestors
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z_PathParents.__init__c C s( | j s | jrt| j�d S t| j�S d S ry )r� r� rV r� r- r! r! r" �__len__e s z_PathParents.__len__c C s@ |dk s|t | �kr t|��| j�| j| j| jd | d � �S )Nr rB )rV �
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�z_PathParents.__getitem__c C s d� | jj�S )Nz <{}.parents>)�formatr� rE r- r! r! r" �__repr__q s z_PathParents.__repr__N) rE rF rG rH � __slots__r/ r� r� r� r! r! r! r" r� Y s r� c @ s� e Zd ZdZdZdd� Zdd� Zedd� �ZedVd
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dd� Zdd� Zdd� Zdd� Zd d � Zd d � Zed d!� �Zd"d#� Zd$d%� Zd&d'� Zd(d)� Zd*d+� Zd,d-� Zee d.�d/d0�Z ee d1�d2d0�Z ed3d4� �Z ed5d6� �Z ed7d8� �Z!ed9d:� �Z"ed;d<� �Z#d=d>� Z$d?d@� Z%dAdB� Z&edCdD� �Z'dEdF� Z(dGdH� Z)dIdJ� Z*edKdL� �Z+edMdN� �Z,dOdP� Z-dQdR� Z.dSdT� Z/dUS )Xr a| Base class for manipulating paths without I/O.
PurePath represents a filesystem path and offers operations which
don't imply any actual filesystem I/O. Depending on your system,
instantiating a PurePath will return either a PurePosixPath or a
PureWindowsPath object. You can also instantiate either of these classes
directly, regardless of your system.
)r� r� r� �_str�_hash�_pparts�_cached_cpartsc G s$ | t krtjdkrtnt} | �|�S )z�Construct a PurePath from one or several strings and or existing
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new PurePath object.
r )r ro r� r r � _from_parts)r� �argsr! r! r" �__new__� s zPurePath.__new__c C s | j t| j�fS r* )� __class__�tupler� r- r! r! r" �
__reduce__� s zPurePath.__reduce__c C sd g }|D ]N}t |t�r"||j7 }qt�|�}t |t�rF|�t|�� qtdt|� ��q| j �
|�S )NzNargument should be a str object or an os.PathLike object returning str, not %r) �
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��zPurePath._parse_argsTc C s< t �| �}|�|�\}}}||_||_||_|r8|�� |S r* )�objectr� r r� r� r� �_init)r� r� �initr. r< r= r; r! r! r" r� � s
zPurePath._from_partsc C s, t �| �}||_||_||_|r(|�� |S r* )r r� r� r� r� r )r� r< r= r; r r. r! r! r" r� � s
zPurePath._from_parsed_partsc C s4 |s|r$|| | j �|dd � � S | j �|�S d S ry )r r, )r� r< r= r; r! r! r" �_format_parsed_parts� s z PurePath._format_parsed_partsc C s d S r* r! r- r! r! r" r � s zPurePath._initc C s@ | � |�\}}}| j�| j| j| j|||�\}}}| �|||�S r* )r r rD r� r� r� r� )r. r� r< r= r; r! r! r" � _make_child� s �
zPurePath._make_childc C sB z| j W S tk
r< | �| j| j| j�p.d| _ | j Y S X dS )z[Return the string representation of the path, suitable for
passing to system calls.r1 N)r� �AttributeErrorr
r� r� r� r- r! r! r" �__str__� s ��zPurePath.__str__c C s t | �S r* )rn r- r! r! r" �
__fspath__� s zPurePath.__fspath__c C s | j }t| ��|jd�S )zNReturn the string representation of the path with forward (/)
slashes.rK )r rn r4 r+ �r. �fr! r! r" r � s zPurePath.as_posixc C s
t �| �S )zaReturn the bytes representation of the path. This is only
recommended to use under Unix.)ro �fsencoder- r! r! r" � __bytes__� s zPurePath.__bytes__c C s d� | jj| �� �S )Nz{}({!r}))r� r� rE r r- r! r! r" r� � s zPurePath.__repr__c C s | � � std��| j�| �S )z Return the path as a 'file' URI.z.relative path can't be expressed as a file URI)r� r� r r� r- r! r! r" �as_uri� s zPurePath.as_uric C s8 z| j W S tk
r2 | j�| j�| _ | j Y S X d S r* )r� r r rd r� r- r! r! r" �_cparts� s
zPurePath._cpartsc C s& t |t�stS | j|jko$| j|jkS r* )r r �NotImplementedr r �r. �otherr! r! r" �__eq__� s
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r2 tt| j��| _ | j Y S X d S r* )r� r �hashr r r- r! r! r" �__hash__� s
zPurePath.__hash__c C s& t |t�r| j|jk rtS | j|jk S r* �r r r r r r r! r! r" �__lt__ s zPurePath.__lt__c C s& t |t�r| j|jk rtS | j|jkS r* r r r! r! r" �__le__ s zPurePath.__le__c C s& t |t�r| j|jk rtS | j|jkS r* r r r! r! r" �__gt__ s zPurePath.__gt__c C s& t |t�r| j|jk rtS | j|jkS r* r r r! r! r" �__ge__ s zPurePath.__ge__r� z.The drive prefix (letter or UNC path), if any.)�docr� z The root of the path, if any.c C s | j | j }|S )z/The concatenation of the drive and root, or ''.)r� r� )r. �anchorr! r! r" r! s zPurePath.anchorc C s. | j }t|�| js| jr dndkr&dS |d S )z!The final path component, if any.rB r r0 rR )r� rV r� r� rc r! r! r" r� $ s z
PurePath.namec C sD | j }|�d�}d| k r,t|�d k r<n n ||d� S dS dS )z{
The final component's last suffix, if any.
This includes the leading period. For example: '.txt'
r1 r rB Nr0 �r� �rfindrV �r. r� rN r! r! r" �suffix, s
zPurePath.suffixc C s: | j }|�d�rg S |�d�}dd� |�d�dd� D �S )z�
A list of the final component's suffixes, if any.
These include the leading periods. For example: ['.tar', '.gz']
r1 c S s g | ] }d | �qS )r1 r! )rM r% r! r! r" rb E s z%PurePath.suffixes.<locals>.<listcomp>rB N)r� r� rX r6 �r. r� r! r! r" �suffixes: s
zPurePath.suffixesc C sD | j }|�d�}d| k r,t|�d k r<n n |d|� S |S dS )z0The final path component, minus its last suffix.r1 r rB Nr" r$ r! r! r" �stemG s
z
PurePath.stemc C s� | j std| f ��| j�|f�\}}}|rX|d | jj| jjfksX|sX|sXt|�dkrdtd| ��| �| j| j | j
dd� |g �S )z-Return a new path with the file name changed.�%r has an empty namerR rB zInvalid name %rN) r� r� r rA r+ r2 rV r� r� r� r� )r. r� r< r= r; r! r! r" � with_nameQ s ��
� �zPurePath.with_namec C s� | j }|j|ks |jr.|j|kr.td|f ��|r<|�d�rD|dkrPtd| ��| j}|shtd| f ��| j}|s||| }n|dt|� � | }| �| j | j
| j dd� |g �S )z�Return a new path with the file suffix changed. If the path
has no suffix, add given suffix. If the given suffix is an empty
string, remove the suffix from the path.
zInvalid suffix %rr1 r) NrR ) r r+ r2 r� rx r� r% rV r� r� r� r� )r. r% r r� Z
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a subpath of the other path), raise ValueError.
zneed at least one argumentrB Nr z {!r} does not start with {!r}r0 )
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r. r r; r< r= Z abs_partsZto_drvZto_rootZto_partsZ to_abs_parts�n�cfZ formattedr! r! r" � relative_toq s. * �
�zPurePath.relative_toc C s4 z| j W S tk
r. t| j�| _ | j Y S X dS )zZAn object providing sequence-like access to the
components in the filesystem path.N)r� r r r� r- r! r! r" r; � s
zPurePath.partsc G s
| � |�S )z�Combine this path with one or several arguments, and return a
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paths) or a totally different path (if one of the arguments is
anchored).
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r& t Y S X d S r* )r r r �r. �keyr! r! r" � __truediv__� s zPurePath.__truediv__c C s2 z| � |g| j �W S tk
r, t Y S X d S r* )r� r� r r r0 r! r! r" � __rtruediv__� s zPurePath.__rtruediv__c C s@ | j }| j}| j}t|�dkr*|s&|r*| S | �|||dd� �S )z The logical parent of the path.rB NrR )r� r� r� rV r� )r. r< r= r; r! r! r" �parent� s zPurePath.parentc C s t | �S )z*A sequence of this path's logical parents.)r� r- r! r! r" �parents� s zPurePath.parentsc C s | j s
dS | jj p t| j�S )zSTrue if the path is absolute (has both a root and, if applicable,
a drive).F)r� r r� �boolr� r- r! r! r" r� � s zPurePath.is_absolutec C s | j �| j�S )zaReturn True if the path contains one of the special names reserved
by the system, if any.)r r} r� r- r! r! r" r} � s zPurePath.is_reservedc C s� | j j}||�}| j �|f�\}}}|s0td��|rF||| j�krFdS |r\||| j�kr\dS | j}|sj|r�t|�t|�kr~dS |dd� }nt|�t|�kr�dS tt |�t |��D ]\}}t
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Return True if this path matches the given pattern.
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empty patternFrB NT) r rC rA r� r� r� r rV �zipr3 rg Z fnmatchcase) r. Z path_patternr- r< r= Z pat_partsr; r? r' r! r! r" r� � s( zPurePath.matchN)T)T)0rE rF rG rH r� r� r � classmethodr r� r� r
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c @ s e Zd ZdZeZdZdS )r z�PurePath subclass for non-Windows systems.
On a POSIX system, instantiating a PurePath should return this object.
However, you can also instantiate it directly on any system.
r! N)rE rF rG rH �_posix_flavourr r� r! r! r! r" r � s c @ s e Zd ZdZeZdZdS )r z�PurePath subclass for Windows systems.
On a Windows system, instantiating a PurePath should return this object.
However, you can also instantiate it directly on any system.
r! N)rE rF rG rH �_windows_flavourr r� r! r! r! r" r � s c @ s� e Zd ZdZdZdd� Zdddd�Zdd � Zd
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dedd�Z dfdd�Z e
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dd� �Zdd� Zd d � Zd d � Zd d!� Zd"d#� Zdgd%d&�Zd'd(� Zd)d*� Zd+d,� Zdhd/d0�Zd1d2� Zdid3d4�Zd5d6� Z djd7d8�Z dkd:d;�Z dld<d=�Z d>d?� Z d@dA� Z!dmdBdC�Z"dDdE� Z#dFdG� Z$dHdI� Z%dJdK� Z&dndLdM�Z'dNdO� Z(dPdQ� Z)dRdS� Z*dTdU� Z+dVdW� Z,dXdY� Z-dZd[� Z.d\d]� Z/d^d_� Z0d`da� Z1dbdc� Z2dS )or a� PurePath subclass that can make system calls.
Path represents a filesystem path but unlike PurePath, also offers
methods to do system calls on path objects. Depending on your system,
instantiating a Path will return either a PosixPath or a WindowsPath
object. You can also instantiate a PosixPath or WindowsPath directly,
but cannot instantiate a WindowsPath on a POSIX system or vice versa.
)r� �_closedc O sL | t krtjdkrtnt} | j|dd�}|jjs@td| j f ��|�
� |S )Nr F�r z$cannot instantiate %r on your system) r ro r� r r r� r r� r� rE r )r� r� �kwargsr. r! r! r" r� s �z Path.__new__Nc C s" d| _ |d k r|j| _nt| _d S r� )r< r� �_normal_accessor)r. �templater! r! r" r s
z
Path._initc C s | j |g }| �| j| j|�S r* )r� r� r� r� )r. r? r; r! r! r" r� # s zPath._make_child_relpathc C s | j r| �� | S r* )r< �
_raise_closedr- r! r! r" � __enter__) s zPath.__enter__c C s
d| _ d S )NT)r< )r. �t�v�tbr! r! r" �__exit__. s z
Path.__exit__c C s t d��d S )Nz I/O operation on closed path)r� r- r! r! r" rA 1 s zPath._raise_closed� c C s | j �| ||�S r* )r� r� )r. r� �flagsr� r! r! r" �_opener4 s z Path._opener� c C s | j r| �� | j�| ||�S )zm
Open the file pointed by this path and return a file descriptor,
as os.open() does.
)r< rA r� r� )r. rH r� r! r! r" � _raw_open8 s zPath._raw_openc C s | t �� �S )zjReturn a new path pointing to the current working directory
(as returned by os.getcwd()).
)ro rp �r� r! r! r" �cwdC s zPath.cwdc C s | | � j �d��S )zrReturn a new path pointing to the user's home directory (as
returned by os.path.expanduser('~')).
N)r r� rL r! r! r" �homeJ s z Path.homec C sB | � � }z |� � }W n tk
r2 t� |�}Y nX tj�||�S )zoReturn whether other_path is the same or not as this file
(as returned by os.path.samefile()).
)r� r ro rs �samestat)r. Z
other_path�stZother_str! r! r" �samefileQ s z
Path.samefilec c sH | j r| �� | j�| �D ](}|dkr(q| �|�V | j r| �� qdS )zyIterate over the files in this directory. Does not yield any
result for the special paths '.' and '..'.
> r1 r� N)r< rA r� r� r� r& r! r! r" �iterdir\ s z Path.iterdirc c s` |st d�|���| j�|f�\}}}|s.|r6td��tt|�| j�}|�| �D ]
}|V qPdS )z�Iterate over this subtree and yield all existing files (of any
kind, including directories) matching the given relative pattern.
zUnacceptable pattern: {!r}�%Non-relative patterns are unsupportedN)r� r� r rA r� r� r r� �r. rl r< r= r� Zselectorra r! r! r" �globj s z Path.globc c sR | j �|f�\}}}|s |r$td��tdt|� | j �}|�| �D ]
}|V qBdS )z�Recursively yield all existing files (of any kind, including
directories) matching the given relative pattern, anywhere in
this subtree.
rS )r� N)r rA r� r� r r� rT r! r! r" �rglobw s z
Path.rglobc C sD | j r| �� | �� r| S | jt�� g| j dd�}|j| d� |S )a Return an absolute version of this path. This function works
even if the path doesn't point to anything.
No normalization is done, i.e. all '.' and '..' will be kept along.
Use resolve() to get the canonical path to a file.
Fr= �r@ )r< rA r� r� ro rp r� r )r. �objr! r! r" �absolute� s z
Path.absoluteFc C sh | j r| �� | jj| |d�}|dkr:| �� t| �� �}| jj�|�}| j |fdd�}|j
| d� |S )z�
Make the path absolute, resolving all symlinks on the way and also
normalizing it (for example turning slashes into backslashes under
Windows).
)rt NFr= rW ) r< rA r rv r� rn rY r� �normpathr� r )r. rt r` ZnormedrX r! r! r" rv � s z Path.resolvec C s | j �| �S )zh
Return the result of the stat() system call on this path, like
os.stat() does.
)r� r� r- r! r! r" r� � s z Path.statc C s ddl }|�| �� j�jS )z:
Return the login name of the file owner.
r N)r� r� r� �st_uidZpw_name)r. r� r! r! r" �owner� s z
Path.ownerc C s ddl }|�| �� j�jS )z8
Return the group name of the file gid.
r N)�grpZgetgrgidr� �st_gidZgr_name)r. r] r! r! r" �group� s z
Path.group�rrR c C s( | j r| �� tj| |||||| jd�S )z|
Open the file pointed by this path and return a file object, as
the built-in open() function does.
)Zopener)r< rA �ior� rI )r. r� � buffering�encoding�errors�newliner! r! r" r� � s
�z Path.openc
C s, | j dd��}|�� W 5 Q R � S Q R X dS )zK
Open the file in bytes mode, read it, and close the file.
�rb�r� N�r� �readr r! r! r" �
read_bytes� s zPath.read_bytesc
C s0 | j d||d��}|�� W 5 Q R � S Q R X dS )zJ
Open the file in text mode, read it, and close the file.
r` �r� rc rd Nrh )r. rc rd r r! r! r" � read_text� s zPath.read_textc
C s6 t |�}| jdd��}|�|�W 5 Q R � S Q R X dS )zO
Open the file in bytes mode, write to it, and close the file.
�wbrg N)�
memoryviewr� �write)r. �dataZviewr r! r! r" � write_bytes� s zPath.write_bytesc
C sL t |t�std|jj ��| jd||d��}|�|�W 5 Q R � S Q R X dS )zN
Open the file in text mode, write to it, and close the file.
zdata must be str, not %s�wrk N)r rn r r� rE r� ro )r. rp rc rd r r! r! r" �
write_text� s
�zPath.write_textTc C sr | j r| �� |r>z| j�| d� W n tk
r8 Y nX dS tjtjB }|sX|tjO }| � ||�}t�
|� dS )zS
Create this file with the given access mode, if it doesn't exist.
N) r< rA r� r� r� ro �O_CREAT�O_WRONLY�O_EXCLrK �close)r. r� �exist_okrH �fdr! r! r" �touch� s
z
Path.touchc C s� | j r| �� z| j�| |� W nd tk
rd |r>| j| kr@� | jjddd� | j|d|d� Y n" tk
r� |r~| �� s�� Y nX dS )z<
Create a new directory at this given path.
T)r5 rx FN)r< rA r� r� rr r4 r� r� )r. r� r5 rx r! r! r" r� s z
Path.mkdirc C s | j r| �� | j�| |� dS )zF
Change the permissions of the path, like os.chmod().
N)r< rA r� r� �r. r� r! r! r" r� s z
Path.chmodc C s | j r| �� | j�| |� dS )z�
Like chmod(), except if the path points to a symlink, the symlink's
permissions are changed, rather than its target's.
N)r< rA r� r� r{ r! r! r" r� s z Path.lchmodc C s> | j r| �� z| j�| � W n tk
r8 |s4� Y nX dS )zd
Remove this file or link.
If the path is a directory, use rmdir() instead.
N)r< rA r� r� rr )r. Z
missing_okr! r! r" r� % s z Path.unlinkc C s | j r| �� | j�| � dS )zF
Remove this directory. The directory must be empty.
N)r< rA r� r� r- r! r! r" r� 2 s z
Path.rmdirc C s | j r| �� | j�| �S )z�
Like stat(), except if the path points to a symlink, the symlink's
status information is returned, rather than its target's.
)r< rA r� r� r- r! r! r" r� : s z
Path.lstatc C s& | j r| �� | j�| |� | �|�S )a2
Rename this path to the target path.
The target path may be absolute or relative. Relative paths are
interpreted relative to the current working directory, *not* the
directory of the Path object.
Returns the new Path instance pointing to the target path.
)r< rA r� r� r� r� r! r! r" r� C s
z Path.renamec C s& | j r| �� | j�| |� | �|�S )aS
Rename this path to the target path, overwriting if that path exists.
The target path may be absolute or relative. Relative paths are
interpreted relative to the current working directory, *not* the
directory of the Path object.
Returns the new Path instance pointing to the target path.
)r< rA r� r4 r� r� r! r! r" r4 R s
z Path.replacec C s" | j r| �� | j�|| |� dS )z�
Make this path a symlink pointing to the target path.
Note the order of arguments (link, target) is the reverse of os.symlink.
N)r< rA r� r� )r. r� r� r! r! r" �
symlink_toa s zPath.symlink_toc C s | j r| �� | j�| |� dS )aQ
Make the target path a hard link pointing to this path.
Note this function does not make this path a hard link to *target*,
despite the implication of the function and argument names. The order
of arguments (target, link) is the reverse of Path.symlink_to, but
matches that of os.link.
N)r< rA r� r� r� r! r! r" r� j s
z Path.link_toc
C sX z | � � W nF tk
r> } zt|�s(� W Y �dS d}~X Y n tk
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Whether this path exists.
FNT)r� r� r# r� �r. r� r! r! r" r� z s z Path.existsc
C s\ zt | �� j�W S tk
rB } zt|�s,� W Y �dS d}~X Y n tk
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Whether this path is a directory.
FN)r r� �st_moder� r# r� r} r! r! r" r� � s z Path.is_dirc
C s\ zt | �� j�W S tk
rB } zt|�s,� W Y �dS d}~X Y n tk
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Whether this path is a regular file (also True for symlinks pointing
to regular files).
FN)r r� r~ r� r# r� r} r! r! r" �is_file� s z Path.is_filec C sv | � � r| �� sdS t| j�}z|�� j}W n tk
rB Y dS X | �� j}||krZdS | �� j}|�� j}||kS )z;
Check if this path is a POSIX mount point
FT)r� r� r r4 r� �st_devr� �st_ino)r. r4 Z
parent_devZdevZinoZ
parent_inor! r! r" �is_mount� s
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Whether this path is a symbolic link.
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r� r~ r� r# r� r} r! r! r" r� � s zPath.is_symlinkc
C s\ zt | �� j�W S tk
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Whether this path is a block device.
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r� r~ r� r# r� r} r! r! r" �is_block_device� s zPath.is_block_devicec
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Whether this path is a character device.
FN)r r� r~ r� r# r� r} r! r! r" �is_char_device� s zPath.is_char_devicec
C s\ zt | �� j�W S tk
rB } zt|�s,� W Y �dS d}~X Y n tk
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Whether this path is a FIFO.
FN)r r� r~ r� r# r� r} r! r! r" �is_fifo� s z Path.is_fifoc
C s\ zt | �� j�W S tk
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Whether this path is a socket.
FN)r r� r~ r� r# r� r} r! r! r" � is_socket� s zPath.is_socketc C s` | j s\| js\| jr\| jd dd� dkr\| j�| jd dd� �}| �|g| jdd� �S | S )zl Return a new path with expanded ~ and ~user constructs
(as returned by os.path.expanduser)
r NrB �~)r� r� r� r r� r� )r. Zhomedirr! r! r" �
expanduser s ��zPath.expanduser)N)rG )rJ )F)r` rR NNN)NN)NN)rG T)rJ FF)F)F)3rE rF rG rH r� r� r r� rB rF rA rI rK r8 rM rN rQ rR rU rV rY rv r� r\ r_ r� rj rl rq rs rz r� r� r� r� r� r� r� r4 r| r� r� r� r r� r� r� r� r� r� r� r! r! r! r" r sj �
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c @ s e Zd ZdZdZdS )r zsPath subclass for non-Windows systems.
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r! N)rE rF rG rH r� r! r! r! r" r s c @ s, e Zd ZdZdZdd� Zdd� Zdd� Zd S )
r zqPath subclass for Windows systems.
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r! c C s t d��d S )Nz*Path.owner() is unsupported on this systemr� r- r! r! r" r\ ( s zWindowsPath.ownerc C s t d��d S )Nz*Path.group() is unsupported on this systemr� r- r! r! r" r_ + s zWindowsPath.groupc C s t d��d S )Nz-Path.is_mount() is unsupported on this systemr� r- r! r! r" r� . s zWindowsPath.is_mountN)rE rF rG rH r� r\ r_ r� r! r! r! r" r ! s
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r r Z urllib.parser r� r� r� r Zgetwindowsversionr �__all__r r r# r( r r) rI r� r; r: r� r� r? r� r� r� r� r� r� r� r� r� r �PathLike�registerr r r r r r! r! r! r" �<module> s| $
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| �} | ||�}|d k �r$|S q|dk�r�|d |k�rLdS | �|d |�\}}|d k �rn|S || dk�r$|d }q|dk�r�|d }||k �r�|| �� �r�|d }�q�||k �r�|| dk�r�|S | �||� | �d� ndS q|�� �r
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A lot more could be done here... A look at a mv.c shows a lot of
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archive that is being built. If not provided, the current owner and group
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aString = "Doodah",
aList = ["A", "B", 12, 32.1, [1, 2, 3]],
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aDict = dict(
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aDate = datetime.datetime.fromtimestamp(time.mktime(time.gmtime())),
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Unless explicitly stated otherwise, the description below is true
both for AIFF-C files and AIFF files.
An AIFF-C file has the following structure.
+-----------------+
| FORM |
+-----------------+
| <size> |
+----+------------+
| | AIFC |
| +------------+
| | <chunks> |
| | . |
| | . |
| | . |
+----+------------+
An AIFF file has the string "AIFF" instead of "AIFC".
A chunk consists of an identifier (4 bytes) followed by a size (4 bytes,
big endian order), followed by the data. The size field does not include
the size of the 8 byte header.
The following chunk types are recognized.
FVER
<version number of AIFF-C defining document> (AIFF-C only).
MARK
<# of markers> (2 bytes)
list of markers:
<marker ID> (2 bytes, must be > 0)
<position> (4 bytes)
<marker name> ("pstring")
COMM
<# of channels> (2 bytes)
<# of sound frames> (4 bytes)
<size of the samples> (2 bytes)
<sampling frequency> (10 bytes, IEEE 80-bit extended
floating point)
in AIFF-C files only:
<compression type> (4 bytes)
<human-readable version of compression type> ("pstring")
SSND
<offset> (4 bytes, not used by this program)
<blocksize> (4 bytes, not used by this program)
<sound data>
A pstring consists of 1 byte length, a string of characters, and 0 or 1
byte pad to make the total length even.
Usage.
Reading AIFF files:
f = aifc.open(file, 'r')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods read(), seek(), and close().
In some types of audio files, if the setpos() method is not used,
the seek() method is not necessary.
This returns an instance of a class with the following public methods:
getnchannels() -- returns number of audio channels (1 for
mono, 2 for stereo)
getsampwidth() -- returns sample width in bytes
getframerate() -- returns sampling frequency
getnframes() -- returns number of audio frames
getcomptype() -- returns compression type ('NONE' for AIFF files)
getcompname() -- returns human-readable version of
compression type ('not compressed' for AIFF files)
getparams() -- returns a namedtuple consisting of all of the
above in the above order
getmarkers() -- get the list of marks in the audio file or None
if there are no marks
getmark(id) -- get mark with the specified id (raises an error
if the mark does not exist)
readframes(n) -- returns at most n frames of audio
rewind() -- rewind to the beginning of the audio stream
setpos(pos) -- seek to the specified position
tell() -- return the current position
close() -- close the instance (make it unusable)
The position returned by tell(), the position given to setpos() and
the position of marks are all compatible and have nothing to do with
the actual position in the file.
The close() method is called automatically when the class instance
is destroyed.
Writing AIFF files:
f = aifc.open(file, 'w')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods write(), tell(), seek(), and
close().
This returns an instance of a class with the following public methods:
aiff() -- create an AIFF file (AIFF-C default)
aifc() -- create an AIFF-C file
setnchannels(n) -- set the number of channels
setsampwidth(n) -- set the sample width
setframerate(n) -- set the frame rate
setnframes(n) -- set the number of frames
setcomptype(type, name)
-- set the compression type and the
human-readable compression type
setparams(tuple)
-- set all parameters at once
setmark(id, pos, name)
-- add specified mark to the list of marks
tell() -- return current position in output file (useful
in combination with setmark())
writeframesraw(data)
-- write audio frames without pathing up the
file header
writeframes(data)
-- write audio frames and patch up the file header
close() -- patch up the file header and close the
output file
You should set the parameters before the first writeframesraw or
writeframes. The total number of frames does not need to be set,
but when it is set to the correct value, the header does not have to
be patched up.
It is best to first set all parameters, perhaps possibly the
compression type, and then write audio frames using writeframesraw.
When all frames have been written, either call writeframes(b'') or
close() to patch up the sizes in the header.
Marks can be added anytime. If there are any marks, you must call
close() after all frames have been written.
The close() method is called automatically when the class instance
is destroyed.
When a file is opened with the extension '.aiff', an AIFF file is
written, otherwise an AIFF-C file is written. This default can be
changed by calling aiff() or aifc() before the first writeframes or
writeframesraw.
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empty. Works like rename, except creation of any intermediate
directories needed to make the new pathname good is attempted
first. After the rename, directories corresponding to rightmost
path segments of the old name will be pruned until either the
whole path is consumed or a nonempty directory is found.
Note: this function can fail with the new directory structure made
if you lack permissions needed to unlink the leaf directory or
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|��s�t ||||�E dH �q�n,|D ]}t ||||�E dH �q�| ||fV dS )a Directory tree generator.
For each directory in the directory tree rooted at top (including top
itself, but excluding '.' and '..'), yields a 3-tuple
dirpath, dirnames, filenames
dirpath is a string, the path to the directory. dirnames is a list of
the names of the subdirectories in dirpath (excluding '.' and '..').
filenames is a list of the names of the non-directory files in dirpath.
Note that the names in the lists are just names, with no path components.
To get a full path (which begins with top) to a file or directory in
dirpath, do os.path.join(dirpath, name).
If optional arg 'topdown' is true or not specified, the triple for a
directory is generated before the triples for any of its subdirectories
(directories are generated top down). If topdown is false, the triple
for a directory is generated after the triples for all of its
subdirectories (directories are generated bottom up).
When topdown is true, the caller can modify the dirnames list in-place
(e.g., via del or slice assignment), and walk will only recurse into the
subdirectories whose names remain in dirnames; this can be used to prune the
search, or to impose a specific order of visiting. Modifying dirnames when
topdown is false has no effect on the behavior of os.walk(), since the
directories in dirnames have already been generated by the time dirnames
itself is generated. No matter the value of topdown, the list of
subdirectories is retrieved before the tuples for the directory and its
subdirectories are generated.
By default errors from the os.scandir() call are ignored. If
optional arg 'onerror' is specified, it should be a function; it
will be called with one argument, an OSError instance. It can
report the error to continue with the walk, or raise the exception
to abort the walk. Note that the filename is available as the
filename attribute of the exception object.
By default, os.walk does not follow symbolic links to subdirectories on
systems that support them. In order to get this functionality, set the
optional argument 'followlinks' to true.
Caution: if you pass a relative pathname for top, don't change the
current working directory between resumptions of walk. walk never
changes the current directory, and assumes that the client doesn't
either.
Example:
import os
from os.path import join, getsize
for root, dirs, files in os.walk('python/Lib/email'):
print(root, "consumes", end="")
print(sum(getsize(join(root, name)) for name in files), end="")
print("bytes in", len(files), "non-directory files")
if 'CVS' in dirs:
dirs.remove('CVS') # don't visit CVS directories
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dd� Zdd� Zdd� Zd d � Zeeej�\ZZd d � Zeeej�\ZZd d!� Zeeej�\Z Z d"d#� Z ee ej �\Z Z!d$d%� Z"ee"ej#�\Z$Z%d&d'� Z&ee&e'�\Z(Z)d(d)� Z*ee*ej+�\Z,Z-d*d+� Z.d,d-� Z/d.d/� Z0d0d1� Z1d2d3� Z2d4d5� Z3d6d7� Z4d8d9� Z5dTd:d;�Z6d<d=� Z7d>d?� Z8d@dA� Z9dBdC� Z:dDdE� Z;dFdG� Z<dHdI� Z=dJdK� Z>dLdM� Z?dNdO� Z@dPdQ� ZA� ZBS )Ur a] This class implements rational numbers.
In the two-argument form of the constructor, Fraction(8, 6) will
produce a rational number equivalent to 4/3. Both arguments must
be Rational. The numerator defaults to 0 and the denominator
defaults to 1 so that Fraction(3) == 3 and Fraction() == 0.
Fractions can also be constructed from:
- numeric strings similar to those accepted by the
float constructor (for example, '-2.3' or '1e10')
- strings of the form '123/456'
- float and Decimal instances
- other Rational instances (including integers)
��
_numerator� _denominatorr NT��
_normalizec sR t t| ��| �}|dk�rdt|�tkr6||_d|_|S t|tj �rV|j
|_|j |_|S t|t t
f�rx|�� \|_|_|S t|t��rZt�|�}|dkr�td| ��t|�d�p�d�}|�d�}|r�t|�}nvd}|�d�}|�rdt|� }|| t|� }||9 }|�d �} | �rBt| �} | d
k�r4|d| 9 }n|d| 9 }|�d �d k�rb| }ntd
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}||_||_|S )a� Constructs a Rational.
Takes a string like '3/2' or '1.5', another Rational instance, a
numerator/denominator pair, or a float.
Examples
--------
>>> Fraction(10, -8)
Fraction(-5, 4)
>>> Fraction(Fraction(1, 7), 5)
Fraction(1, 35)
>>> Fraction(Fraction(1, 7), Fraction(2, 3))
Fraction(3, 14)
>>> Fraction('314')
Fraction(314, 1)
>>> Fraction('-35/4')
Fraction(-35, 4)
>>> Fraction('3.1415') # conversion from numeric string
Fraction(6283, 2000)
>>> Fraction('-47e-2') # string may include a decimal exponent
Fraction(-47, 100)
>>> Fraction(1.47) # direct construction from float (exact conversion)
Fraction(6620291452234629, 4503599627370496)
>>> Fraction(2.25)
Fraction(9, 4)
>>> Fraction(Decimal('1.47'))
Fraction(147, 100)
N� z Invalid literal for Fraction: %rZnum�0�denom�decimal�
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zFraction.__new__c C sD t |tj�r| |�S t |t�s8td| j|t|�jf ��| |�� � S )z�Converts a finite float to a rational number, exactly.
Beware that Fraction.from_float(0.3) != Fraction(3, 10).
z.%s.from_float() only takes floats, not %r (%s))r" r# �Integralr' r/ �__name__r
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from_float� s
�zFraction.from_floatc C sV ddl m} t|tj�r&|t|��}n$t||�sJtd| j|t|�jf ��| |� � � S )zAConverts a finite Decimal instance to a rational number, exactly.r r z2%s.from_decimal() only takes Decimals, not %r (%s))
r r r" r# r7 r r/ r8 r
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��zFraction.from_decimalc C s | j | jfS )z�Return the integer ratio as a tuple.
Return a tuple of two integers, whose ratio is equal to the
Fraction and with a positive denominator.
r �r2 r r r r( � s zFraction.as_integer_ratio�@B c
C s� |dk rt d��| j|kr"t| �S d\}}}}| j| j }}|| }||| } | |krZq�||||| | f\}}}}|||| }}q<|| | }
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| �} t||�} t| | �t| | �kr�| S | S dS )aW Closest Fraction to self with denominator at most max_denominator.
>>> Fraction('3.141592653589793').limit_denominator(10)
Fraction(22, 7)
>>> Fraction('3.141592653589793').limit_denominator(100)
Fraction(311, 99)
>>> Fraction(4321, 8765).limit_denominator(10000)
Fraction(4321, 8765)
r z$max_denominator should be at least 1)r r r r N)r, r r r �abs)
r2 Zmax_denominatorZp0Zq0Zp1Zq1�n�dr Zq2�kZbound1Zbound2r r r �limit_denominator� s$
zFraction.limit_denominatorc C s | j S r )r �r r r r r% s zFraction.numeratorc C s | j S r )r rC r r r r& s zFraction.denominatorc C s d| j j| j| jf S )z
repr(self)z
%s(%s, %s))r6 r8 r r r< r r r �__repr__" s �zFraction.__repr__c C s( | j dkrt| j�S d| j| j f S dS )z str(self)r z%s/%sN)r r) r r< r r r �__str__' s
zFraction.__str__c sT � �fdd�}d� j d |_ �j|_� �fdd�}d� j d |_ �j|_||fS )a� Generates forward and reverse operators given a purely-rational
operator and a function from the operator module.
Use this like:
__op__, __rop__ = _operator_fallbacks(just_rational_op, operator.op)
In general, we want to implement the arithmetic operations so
that mixed-mode operations either call an implementation whose
author knew about the types of both arguments, or convert both
to the nearest built in type and do the operation there. In
Fraction, that means that we define __add__ and __radd__ as:
def __add__(self, other):
# Both types have numerators/denominator attributes,
# so do the operation directly
if isinstance(other, (int, Fraction)):
return Fraction(self.numerator * other.denominator +
other.numerator * self.denominator,
self.denominator * other.denominator)
# float and complex don't have those operations, but we
# know about those types, so special case them.
elif isinstance(other, float):
return float(self) + other
elif isinstance(other, complex):
return complex(self) + other
# Let the other type take over.
return NotImplemented
def __radd__(self, other):
# radd handles more types than add because there's
# nothing left to fall back to.
if isinstance(other, numbers.Rational):
return Fraction(self.numerator * other.denominator +
other.numerator * self.denominator,
self.denominator * other.denominator)
elif isinstance(other, Real):
return float(other) + float(self)
elif isinstance(other, Complex):
return complex(other) + complex(self)
return NotImplemented
There are 5 different cases for a mixed-type addition on
Fraction. I'll refer to all of the above code that doesn't
refer to Fraction, float, or complex as "boilerplate". 'r'
will be an instance of Fraction, which is a subtype of
Rational (r : Fraction <: Rational), and b : B <:
Complex. The first three involve 'r + b':
1. If B <: Fraction, int, float, or complex, we handle
that specially, and all is well.
2. If Fraction falls back to the boilerplate code, and it
were to return a value from __add__, we'd miss the
possibility that B defines a more intelligent __radd__,
so the boilerplate should return NotImplemented from
__add__. In particular, we don't handle Rational
here, even though we could get an exact answer, in case
the other type wants to do something special.
3. If B <: Fraction, Python tries B.__radd__ before
Fraction.__add__. This is ok, because it was
implemented with knowledge of Fraction, so it can
handle those instances before delegating to Real or
Complex.
The next two situations describe 'b + r'. We assume that b
didn't know about Fraction in its implementation, and that it
uses similar boilerplate code:
4. If B <: Rational, then __radd_ converts both to the
builtin rational type (hey look, that's us) and
proceeds.
5. Otherwise, __radd__ tries to find the nearest common
base ABC, and fall back to its builtin type. Since this
class doesn't subclass a concrete type, there's no
implementation to fall back to, so we need to try as
hard as possible to return an actual value, or the user
will get a TypeError.
c sP t |ttf�r�| |�S t |t�r0� t| �|�S t |t�rH� t| �|�S tS d S r )r" r r r' �complex�NotImplementedr ��fallback_operator�monomorphic_operatorr r �forward~ s
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Fraction._addc C s, | j |j }}t| j| |j| || �S )za - brR rS r r r �_sub� s �z
Fraction._subc C s t | j|j | j|j �S )za * b�r r% r& r r r r �_mul� s z
Fraction._mulc C s t | j|j | j|j �S )za / brX r r r r �_div� s
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Fraction._modc C s� t |tj�r�|jdkr�|j}|dkr>t| j| | j| dd�S | jdkrft| j| | j| dd�S t| j | | j | dd�S q�t| �t|� S n t| �| S dS )z�a ** b
If b is not an integer, the result will be a float or complex
since roots are generally irrational. If b is an integer, the
result will be rational.
r r Fr N) r" r# r$ r& r% r r r r' )r r Zpowerr r r �__pow__� s&
�
� �zFraction.__pow__c C s\ | j dkr | jdkr || j S t|tj�r<t|j|j�| S | j dkrP|| j S |t| � S )za ** br r ) r r r" r# r$ r r% r& r' rN r r r �__rpow__� s
zFraction.__rpow__c C s t | j| jdd�S )z++a: Coerces a subclass instance to FractionFr �r r r rC r r r �__pos__� s zFraction.__pos__c C s t | j | jdd�S )z-aFr rb rC r r r �__neg__� s zFraction.__neg__c C s t t| j�| jdd�S )zabs(a)Fr )r r> r r rC r r r �__abs__� s zFraction.__abs__c C s* | j dk r| j | j S | j | j S dS )ztrunc(a)r Nr rC r r r � __trunc__ s
zFraction.__trunc__c C s | j | j S )z
math.floor(a)r[ rC r r r � __floor__
s zFraction.__floor__c C s | j | j S )z math.ceil(a)r[ rC r r r �__ceil__ s zFraction.__ceil__c C s� |dkrZt | j| j�\}}|d | jk r,|S |d | jkrB|d S |d dkrR|S |d S dt|� }|dkr�tt| | �|�S tt| | �| �S dS )z?round(self, ndigits)
Rounds half toward even.
Nr r r r )r] r% r& r> r �round)r2 ZndigitsZfloorZ remainder�shiftr r r � __round__ s zFraction.__round__c C sP t | jtd t�}|s t}nt| j�| t }| dkr:|n| }|dkrLdS |S )z
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|�rN|d|�S || | � |��S nt S dS )ac Helper for comparison operators, for internal use only.
Implement comparison between a Rational instance `self`, and
either another Rational instance or a float `other`. If
`other` is not a Rational instance or a float, return
NotImplemented. `op` should be one of the six standard
comparison operators.
rs N)
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heap = [] # creates an empty heap
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item = heap[0] # smallest item on the heap without popping it
heapify(x) # transforms list into a heap, in-place, in linear time
item = heapreplace(heap, item) # pops and returns smallest item, and adds
# new item; the heap size is unchanged
Our API differs from textbook heap algorithms as follows:
- We use 0-based indexing. This makes the relationship between the
index for a node and the indexes for its children slightly less
obvious, but is more suitable since Python uses 0-based indexing.
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These two make it possible to view the heap as a regular Python list
without surprises: heap[0] is the smallest item, and heap.sort()
maintains the heap invariant!
uo Heap queues
[explanation by François Pinard]
Heaps are arrays for which a[k] <= a[2*k+1] and a[k] <= a[2*k+2] for
all k, counting elements from 0. For the sake of comparison,
non-existing elements are considered to be infinite. The interesting
property of a heap is that a[0] is always its smallest element.
The strange invariant above is meant to be an efficient memory
representation for a tournament. The numbers below are `k', not a[k]:
0
1 2
3 4 5 6
7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
In the tree above, each cell `k' is topping `2*k+1' and `2*k+2'. In
a usual binary tournament we see in sports, each cell is the winner
over the two cells it tops, and we can trace the winner down the tree
to see all opponents s/he had. However, in many computer applications
of such tournaments, we do not need to trace the history of a winner.
To be more memory efficient, when a winner is promoted, we try to
replace it by something else at a lower level, and the rule becomes
that a cell and the two cells it tops contain three different items,
but the top cell "wins" over the two topped cells.
If this heap invariant is protected at all time, index 0 is clearly
the overall winner. The simplest algorithmic way to remove it and
find the "next" winner is to move some loser (let's say cell 30 in the
diagram above) into the 0 position, and then percolate this new 0 down
the tree, exchanging values, until the invariant is re-established.
This is clearly logarithmic on the total number of items in the tree.
By iterating over all items, you get an O(n ln n) sort.
A nice feature of this sort is that you can efficiently insert new
items while the sort is going on, provided that the inserted items are
not "better" than the last 0'th element you extracted. This is
especially useful in simulation contexts, where the tree holds all
incoming events, and the "win" condition means the smallest scheduled
time. When an event schedule other events for execution, they are
scheduled into the future, so they can easily go into the heap. So, a
heap is a good structure for implementing schedulers (this is what I
used for my MIDI sequencer :-).
Various structures for implementing schedulers have been extensively
studied, and heaps are good for this, as they are reasonably speedy,
the speed is almost constant, and the worst case is not much different
than the average case. However, there are other representations which
are more efficient overall, yet the worst cases might be terrible.
Heaps are also very useful in big disk sorts. You most probably all
know that a big sort implies producing "runs" (which are pre-sorted
sequences, which size is usually related to the amount of CPU memory),
followed by a merging passes for these runs, which merging is often
very cleverly organised[1]. It is very important that the initial
sort produces the longest runs possible. Tournaments are a good way
to that. If, using all the memory available to hold a tournament, you
replace and percolate items that happen to fit the current run, you'll
produce runs which are twice the size of the memory for random input,
and much better for input fuzzily ordered.
Moreover, if you output the 0'th item on disk and get an input which
may not fit in the current tournament (because the value "wins" over
the last output value), it cannot fit in the heap, so the size of the
heap decreases. The freed memory could be cleverly reused immediately
for progressively building a second heap, which grows at exactly the
same rate the first heap is melting. When the first heap completely
vanishes, you switch heaps and start a new run. Clever and quite
effective!
In a word, heaps are useful memory structures to know. I use them in
a few applications, and I think it is good to keep a `heap' module
around. :-)
--------------------
[1] The disk balancing algorithms which are current, nowadays, are
more annoying than clever, and this is a consequence of the seeking
capabilities of the disks. On devices which cannot seek, like big
tape drives, the story was quite different, and one had to be very
clever to ensure (far in advance) that each tape movement will be the
most effective possible (that is, will best participate at
"progressing" the merge). Some tapes were even able to read
backwards, and this was also used to avoid the rewinding time.
Believe me, real good tape sorts were quite spectacular to watch!
From all times, sorting has always been a Great Art! :-)
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the ending (row, column) indices of the token (a 2-tuple of ints)
the original line (string)
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eedfdd�Zddd�dd�Zedkr�e�e� � dS )a9 Tool for measuring execution time of small code snippets.
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times. See also Tim Peters' introduction to the Algorithms chapter in
the Python Cookbook, published by O'Reilly.
Library usage: see the Timer class.
Command line usage:
python timeit.py [-n N] [-r N] [-s S] [-p] [-h] [--] [statement]
Options:
-n/--number N: how many times to execute 'statement' (default: see below)
-r/--repeat N: how many times to repeat the timer (default 5)
-s/--setup S: statement to be executed once initially (default 'pass').
Execution time of this setup statement is NOT timed.
-p/--process: use time.process_time() (default is time.perf_counter())
-v/--verbose: print raw timing results; repeat for more digits precision
-u/--unit: set the output time unit (nsec, usec, msec, or sec)
-h/--help: print this usage message and exit
--: separate options from statement, use when statement starts with -
statement: statement to be timed (default 'pass')
A multi-line statement may be given by specifying each line as a
separate argument; indented lines are possible by enclosing an
argument in quotes and using leading spaces. Multiple -s options are
treated similarly.
If -n is not given, a suitable number of loops is calculated by trying
increasing numbers from the sequence 1, 2, 5, 10, 20, 50, ... until the
total time is at least 0.2 seconds.
Note: there is a certain baseline overhead associated with executing a
pass statement. It differs between versions. The code here doesn't try
to hide it, but you should be aware of it. The baseline overhead can be
measured by invoking the program without arguments.
Classes:
Timer
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timeit(string, string) -> float
repeat(string, string) -> list
default_timer() -> float
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lower bound for how fast your machine can run the given code
snippet; higher values in the result vector are typically not
caused by variability in Python's speed, but by other
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Basic statistics module.
This module provides functions for calculating statistics of data, including
averages, variance, and standard deviation.
Calculating averages
--------------------
================== ==================================================
Function Description
================== ==================================================
mean Arithmetic mean (average) of data.
fmean Fast, floating point arithmetic mean.
geometric_mean Geometric mean of data.
harmonic_mean Harmonic mean of data.
median Median (middle value) of data.
median_low Low median of data.
median_high High median of data.
median_grouped Median, or 50th percentile, of grouped data.
mode Mode (most common value) of data.
multimode List of modes (most common values of data).
quantiles Divide data into intervals with equal probability.
================== ==================================================
Calculate the arithmetic mean ("the average") of data:
>>> mean([-1.0, 2.5, 3.25, 5.75])
2.625
Calculate the standard median of discrete data:
>>> median([2, 3, 4, 5])
3.5
Calculate the median, or 50th percentile, of data grouped into class intervals
centred on the data values provided. E.g. if your data points are rounded to
the nearest whole number:
>>> median_grouped([2, 2, 3, 3, 3, 4]) #doctest: +ELLIPSIS
2.8333333333...
This should be interpreted in this way: you have two data points in the class
interval 1.5-2.5, three data points in the class interval 2.5-3.5, and one in
the class interval 3.5-4.5. The median of these data points is 2.8333...
Calculating variability or spread
---------------------------------
================== =============================================
Function Description
================== =============================================
pvariance Population variance of data.
variance Sample variance of data.
pstdev Population standard deviation of data.
stdev Sample standard deviation of data.
================== =============================================
Calculate the standard deviation of sample data:
>>> stdev([2.5, 3.25, 5.5, 11.25, 11.75]) #doctest: +ELLIPSIS
4.38961843444...
If you have previously calculated the mean, you can pass it as the optional
second argument to the four "spread" functions to avoid recalculating it:
>>> data = [1, 2, 2, 4, 4, 4, 5, 6]
>>> mu = mean(data)
>>> pvariance(data, mu)
2.5
Exceptions
----------
A single exception is defined: StatisticsError is a subclass of ValueError.
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(<class 'float'>, Fraction(11, 1), 5)
Some sources of round-off error will be avoided:
# Built-in sum returns zero.
>>> _sum([1e50, 1, -1e50] * 1000)
(<class 'float'>, Fraction(1000, 1), 3000)
Fractions and Decimals are also supported:
>>> from fractions import Fraction as F
>>> _sum([F(2, 3), F(7, 5), F(1, 4), F(5, 6)])
(<class 'fractions.Fraction'>, Fraction(63, 20), 4)
>>> from decimal import Decimal as D
>>> data = [D("0.1375"), D("0.2108"), D("0.3061"), D("0.0419")]
>>> _sum(data)
(<class 'decimal.Decimal'>, Fraction(6963, 10000), 4)
Mixed types are currently treated as an error, except that int is
allowed.
r � Nc s s | ]\}}t ||�V qd S �Nr )�.0�d�nr& r& r' � <genexpr>� s z_sum.<locals>.<genexpr>) � _exact_ratio�get�_coerce�int�typer �map� _isfinite�AssertionError�sum�sorted�items) �data�start�countr, r+ ZpartialsZ partials_get�T�typ�values�totalr& r& r' �_sum{ s $
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r( t�| � Y S X d S r) )Z is_finite�AttributeError�mathZisfinite)�xr& r& r' r4 � s
r4 c C s� | t k std��| |kr | S |tks,|t kr0| S | tkr<|S t|| �rJ|S t| |�rX| S t| t�rf|S t|t�rt| S t| t�r�t|t�r�|S t| t�r�t|t�r�| S d}t|| j|jf ��dS )z�Coerce types T and S to a common type, or raise TypeError.
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zinitial type T is boolz"don't know how to coerce %s and %sN)�boolr5 r1 �
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r0 c C s� zrt | �tkst | �tkr$| �� W S z| j| jfW W S tk
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�| df Y S X d}t |� t | �j
���dS )z�Return Real number x to exact (numerator, denominator) pair.
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(1, 4)
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Nz0can't convert type '{}' to numerator/denominator)r2 rF r �as_integer_ratio� numerator� denominatorrA �
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rj t|t�rd|| j�|| j� Y S � Y nX dS )z&Convert value to given numeric type T.r( N)r2 rE r1 rL rF rG r rK )�valuer< r& r& r' �_convert� s
rQ c C s. t | |�}|t| �kr&| | |kr&|S t�dS )z,Locate the leftmost value exactly equal to xN)r �lenrN )�arC �ir& r& r' �
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rU c C s> t | ||d�}|t| �d kr6| |d |kr6|d S t�dS )z-Locate the rightmost value exactly equal to x)�lor( N)r rR rN )rS �lrC rT r& r& r' �
_find_rteq s rX �negative valuec c s$ | D ]}|dk rt |��|V qdS )z7Iterate over values, failing if any are less than zero.r N)r )r> �errmsgrC r& r& r' � _fail_neg s r[ c C sT t | �| krt| �} t| �}|dk r,td��t| �\}}}||ksFt�t|| |�S )a� Return the sample arithmetic mean of data.
>>> mean([1, 2, 3, 4, 4])
2.8
>>> from fractions import Fraction as F
>>> mean([F(3, 7), F(1, 21), F(5, 3), F(1, 3)])
Fraction(13, 21)
>>> from decimal import Decimal as D
>>> mean([D("0.5"), D("0.75"), D("0.625"), D("0.375")])
Decimal('0.5625')
If ``data`` is empty, StatisticsError will be raised.
r( z%mean requires at least one data point)�iter�listrR r r@ r5 rQ )r9 r, r< r? r; r& r& r' r ' s c st z t | �� W n0 tk
r< d� � fdd�}t|| ��}Y n
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|� W S tk
rn td�d�Y nX dS )z�Convert data to floats and compute the arithmetic mean.
This runs faster than the mean() function and it always returns a float.
If the input dataset is empty, it raises a StatisticsError.
>>> fmean([3.5, 4.0, 5.25])
4.25
r c 3 s t | dd�D ]\� }|V q d S )Nr( )r: )� enumerate)�iterablerC �r, r& r' r; O s zfmean.<locals>.countz&fmean requires at least one data pointN)rR rG r �ZeroDivisionErrorr )r9 r; r? r& r` r' r A s
c C s8 zt ttt| ���W S tk
r2 td�d�Y nX dS )aY Convert data to floats and compute the geometric mean.
Raises a StatisticsError if the input dataset is empty,
if it contains a zero, or if it contains a negative value.
No special efforts are made to achieve exact results.
(However, this may change in the future.)
>>> round(geometric_mean([54, 24, 36]), 9)
36.0
zHgeometric mean requires a non-empty dataset containing positive numbersN)r r r3 r rN r )r9 r& r& r' r \ s �c C s� t | �| krt| �} d}t| �}|dk r2td��n<|dkrn| d }t|tjtf�rf|dk rbt|��|S td��z"t dd� t
| |�D ��\}}}W n t k
r� Y dS X ||ks�t �t
|| |�S )a Return the harmonic mean of data.
The harmonic mean, sometimes called the subcontrary mean, is the
reciprocal of the arithmetic mean of the reciprocals of the data,
and is often appropriate when averaging quantities which are rates
or ratios, for example speeds. Example:
Suppose an investor purchases an equal value of shares in each of
three companies, with P/E (price/earning) ratios of 2.5, 3 and 10.
What is the average P/E ratio for the investor's portfolio?
>>> harmonic_mean([2.5, 3, 10]) # For an equal investment portfolio.
3.6
Using the arithmetic mean would give an average of about 5.167, which
is too high.
If ``data`` is empty, or any element is less than zero,
``harmonic_mean`` will raise ``StatisticsError``.
z.harmonic mean does not support negative valuesr( z.harmonic_mean requires at least one data pointr zunsupported typec s s | ]}d | V qdS )r( Nr& �r* rC r& r& r' r- � s z harmonic_mean.<locals>.<genexpr>)r\ r] rR r �
isinstance�numbersZRealr rG r@ r[ ra r5 rQ )r9 rZ r, rC r< r? r; r& r& r' r o s&
" c C s\ t | �} t| �}|dkr td��|d dkr8| |d S |d }| |d | | d S dS )aB Return the median (middle value) of numeric data.
When the number of data points is odd, return the middle data point.
When the number of data points is even, the median is interpolated by
taking the average of the two middle values:
>>> median([1, 3, 5])
3
>>> median([1, 3, 5, 7])
4.0
r �no median for empty data� r( N�r7 rR r )r9 r, rT r& r& r' r � s
c C sL t | �} t| �}|dkr td��|d dkr8| |d S | |d d S dS )a Return the low median of numeric data.
When the number of data points is odd, the middle value is returned.
When it is even, the smaller of the two middle values is returned.
>>> median_low([1, 3, 5])
3
>>> median_low([1, 3, 5, 7])
3
r re rf r( Nrg �r9 r, r& r& r' r
� s c C s, t | �} t| �}|dkr td��| |d S )a Return the high median of data.
When the number of data points is odd, the middle value is returned.
When it is even, the larger of the two middle values is returned.
>>> median_high([1, 3, 5])
3
>>> median_high([1, 3, 5, 7])
5
r re rf rg rh r& r& r' r � s
r( c
C s� t | �} t| �}|dkr"td��n|dkr2| d S | |d }||fD ] }t|ttf�rFtd| ��qFz||d }W n( tk
r� t|�t|�d }Y nX t| |�}t | ||�}|}|| d } |||d | | S )a� Return the 50th percentile (median) of grouped continuous data.
>>> median_grouped([1, 2, 2, 3, 4, 4, 4, 4, 4, 5])
3.7
>>> median_grouped([52, 52, 53, 54])
52.5
This calculates the median as the 50th percentile, and should be
used when your data is continuous and grouped. In the above example,
the values 1, 2, 3, etc. actually represent the midpoint of classes
0.5-1.5, 1.5-2.5, 2.5-3.5, etc. The middle value falls somewhere in
class 3.5-4.5, and interpolation is used to estimate it.
Optional argument ``interval`` represents the class interval, and
defaults to 1. Changing the class interval naturally will change the
interpolated 50th percentile value:
>>> median_grouped([1, 3, 3, 5, 7], interval=1)
3.25
>>> median_grouped([1, 3, 3, 5, 7], interval=2)
3.5
This function does not check whether the data points are at least
``interval`` apart.
r re r( rf zexpected number but got %r)
r7 rR r rc �str�bytesrG rF rU rX )
r9 Zintervalr, rC �obj�L�l1�l2Zcf�fr& r& r' r � s&
c C sH t | �} t| ��d�}z|d d W S tk
rB td�d�Y nX dS )ax Return the most common data point from discrete or nominal data.
``mode`` assumes discrete data, and returns a single value. This is the
standard treatment of the mode as commonly taught in schools:
>>> mode([1, 1, 2, 3, 3, 3, 3, 4])
3
This also works with nominal (non-numeric) data:
>>> mode(["red", "blue", "blue", "red", "green", "red", "red"])
'red'
If there are multiple modes with same frequency, return the first one
encountered:
>>> mode(['red', 'red', 'green', 'blue', 'blue'])
'red'
If *data* is empty, ``mode``, raises StatisticsError.
r( r zno mode for empty dataN)r\ r" � most_common�
IndexErrorr )r9 Zpairsr& r& r' r s c C s@ t t| ���� }tt|td�d�dg f�\}}tttd�|��S )a. Return a list of the most frequently occurring values.
Will return more than one result if there are multiple modes
or an empty list if *data* is empty.
>>> multimode('aabbbbbbbbcc')
['b']
>>> multimode('aabbbbccddddeeffffgg')
['b', 'd', 'f']
>>> multimode('')
[]
r( )�keyr )r" r\ rp �nextr r! r] r3 )r9 ZcountsZmaxcountZ
mode_itemsr& r& r' r 5 s
� � exclusive)r, �methodc
C sL |dk rt d��t| �} t| �}|dk r0t d��|dkr�|d }g }td|�D ]N}|| | }|| || }| | || | |d | | } |�| � qN|S |dk�r:|d }g }td|�D ]r}|| | }|dk r�dn||d kr�|d n|}|| || }| |d || | | | | } |�| � q�|S td|����dS ) a� Divide *data* into *n* continuous intervals with equal probability.
Returns a list of (n - 1) cut points separating the intervals.
Set *n* to 4 for quartiles (the default). Set *n* to 10 for deciles.
Set *n* to 100 for percentiles which gives the 99 cuts points that
separate *data* in to 100 equal sized groups.
The *data* can be any iterable containing sample.
The cut points are linearly interpolated between data points.
If *method* is set to *inclusive*, *data* is treated as population
data. The minimum value is treated as the 0th percentile and the
maximum value is treated as the 100th percentile.
r( zn must be at least 1rf z"must have at least two data pointsZ inclusiveru zUnknown method: N)r r7 rR �range�appendrN )
r9 r, rv Zld�m�resultrT �jZdeltaZ interpolatedr& r& r' r l s4 $
$$ c s� � dk r,t � fdd�| D ��\}}}||fS t| �� t � fdd�| D ��\}}}t � fdd�| D ��\}}}||kr|||ks�t�||d t| � 8 }|dk r�td| ��||fS ) a; Return sum of square deviations of sequence data.
If ``c`` is None, the mean is calculated in one pass, and the deviations
from the mean are calculated in a second pass. Otherwise, deviations are
calculated from ``c`` as given. Use the second case with care, as it can
lead to garbage results.
Nc 3 s | ]}|� d V qdS �rf Nr& rb ��cr& r' r- � s z_ss.<locals>.<genexpr>c 3 s | ]}|� d V qdS r| r& rb r} r& r' r- � s c 3 s | ]}|� V qd S r) r& rb r} r& r' r- � s rf r z%negative sum of square deviations: %f)r@ r r5 rR )r9 r~ r< r? r; �UZtotal2Zcount2r& r} r' �_ss� s r� c C sL t | �| krt| �} t| �}|dk r,td��t| |�\}}t||d |�S )a� Return the sample variance of data.
data should be an iterable of Real-valued numbers, with at least two
values. The optional argument xbar, if given, should be the mean of
the data. If it is missing or None, the mean is automatically calculated.
Use this function when your data is a sample from a population. To
calculate the variance from the entire population, see ``pvariance``.
Examples:
>>> data = [2.75, 1.75, 1.25, 0.25, 0.5, 1.25, 3.5]
>>> variance(data)
1.3720238095238095
If you have already calculated the mean of your data, you can pass it as
the optional second argument ``xbar`` to avoid recalculating it:
>>> m = mean(data)
>>> variance(data, m)
1.3720238095238095
This function does not check that ``xbar`` is actually the mean of
``data``. Giving arbitrary values for ``xbar`` may lead to invalid or
impossible results.
Decimals and Fractions are supported:
>>> from decimal import Decimal as D
>>> variance([D("27.5"), D("30.25"), D("30.25"), D("34.5"), D("41.75")])
Decimal('31.01875')
>>> from fractions import Fraction as F
>>> variance([F(1, 6), F(1, 2), F(5, 3)])
Fraction(67, 108)
rf z*variance requires at least two data pointsr( �r\ r] rR r r� rQ )r9 �xbarr, r< �ssr& r& r' r � s & c C sH t | �| krt| �} t| �}|dk r,td��t| |�\}}t|| |�S )a, Return the population variance of ``data``.
data should be a sequence or iterable of Real-valued numbers, with at least one
value. The optional argument mu, if given, should be the mean of
the data. If it is missing or None, the mean is automatically calculated.
Use this function to calculate the variance from the entire population.
To estimate the variance from a sample, the ``variance`` function is
usually a better choice.
Examples:
>>> data = [0.0, 0.25, 0.25, 1.25, 1.5, 1.75, 2.75, 3.25]
>>> pvariance(data)
1.25
If you have already calculated the mean of the data, you can pass it as
the optional second argument to avoid recalculating it:
>>> mu = mean(data)
>>> pvariance(data, mu)
1.25
Decimals and Fractions are supported:
>>> from decimal import Decimal as D
>>> pvariance([D("27.5"), D("30.25"), D("30.25"), D("34.5"), D("41.75")])
Decimal('24.815')
>>> from fractions import Fraction as F
>>> pvariance([F(1, 4), F(5, 4), F(1, 2)])
Fraction(13, 72)
r( z*pvariance requires at least one data pointr� )r9 �mur, r< r� r& r& r' r � s # c C s8 t | |�}z
|�� W S tk
r2 t�|� Y S X dS )z�Return the square root of the sample variance.
See ``variance`` for arguments and other details.
>>> stdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75])
1.0810874155219827
N)r r rA rB )r9 r� �varr& r& r' r s
c C s8 t | |�}z
|�� W S tk
r2 t�|� Y S X dS )z�Return the square root of the population variance.
See ``pvariance`` for arguments and other details.
>>> pstdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75])
0.986893273527251
N)r r rA rB )r9 r� r� r& r& r' r
& s
c C s | d }t |�dkr�d|| }d| d | d | d | d | d | d
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| d | d | d | d | d | d }|| }||| S |dkr�| nd| }tt|� �}|dk�r^|d }d| d | d | d | d | d | d | d }d | d | d! | d" | d# | d$ | d% | d }n�|d }d&| d' | d( | d) | d* | d+ | d, | d- }d.| d/ | d0 | d1 | d2 | d3 | d4 | d }|| }|dk �r�| }||| S )5N� �?g333333�?g ��Q� �?g^�}o)��@g�E.k�R�@g ��U l�@g*u��>l�@g �N����@g�"]Ξ@gnC���`@gu� � @giK��~j�@gv��|E�@g��d�|1�@gfR��r��@g��u.2�@g���~y�@g�n8(E@� �?� g @g�������?g鬷�ZaI?gg�El�D�?g7\�����?g�uS�S�?g�=�.
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>g('߿��A?g��~z �?g@�3��?gɅ3��?g3fR�x�?gI�F��l @g����t��>g*�Y��n�>gESB\T?g�N;A+�?g�UR1��?gE� F���?gP�n��@g&�>���@g����i�<g�@�F�>g�tcI,\�>g�ŝ���I?g*F2�v�?g�C4�?g��O�1�?)r r r )�pr� �sigma�q�rZnumZdenrC r& r& r' �_normal_dist_inv_cdf9 sd ���������������������������
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edd� �Zed d � �Zed d � �Zed d!� �Zed"d#� �Zd$d%� Zd&d'� Zd(d)� Zd*d+� Zd,d-� Zd.d/� ZeZd0d1� ZeZ d2d3� Z d4d5� Z d6d7� Z d S ):r z(Normal distribution of a random variablez(Arithmetic mean of a normal distributionz+Standard deviation of a normal distribution)�_mu�_sigmar� r� c C s( |dk rt d��t|�| _t|�| _dS )zDNormalDist where mu is the mean and sigma is the standard deviation.r� zsigma must be non-negativeN)r rF r� r� )�selfr� r� r& r& r' �__init__� s
zNormalDist.__init__c C s. t |ttf�st|�}t|�}| |t||��S )z5Make a normal distribution instance from sample data.)rc r] �tupler r )�clsr9 r� r& r& r' � from_samples� s zNormalDist.from_samplesN)�seedc sB |dkrt jn
t �|�j� | j| j ��� ��fdd�t|�D �S )z=Generate *n* samples for a given mean and standard deviation.Nc s g | ]}� ����qS r& r& �r* rT ��gaussr� r� r& r' �
<listcomp>� s z&NormalDist.samples.<locals>.<listcomp>)�randomr� ZRandomr� r� rw )r� r, r� r& r� r' �samples� s zNormalDist.samplesc C s< | j d }|std��t|| j d d| �tt| � S )z4Probability density function. P(x <= X < x+dx) / dx� @z$pdf() not defined when sigma is zerog �)r� r r r� r r )r� rC r r& r& r' �pdf� s
zNormalDist.pdfc C s2 | j std��ddt|| j | j td� � S )z,Cumulative distribution function. P(X <= x)z$cdf() not defined when sigma is zeror� r� r� )r� r r r� r )r� rC r& r& r' �cdf� s zNormalDist.cdfc C s: |dks|dkrt d��| jdkr*t d��t|| j| j�S )aS Inverse cumulative distribution function. x : P(X <= x) = p
Finds the value of the random variable such that the probability of
the variable being less than or equal to that value equals the given
probability.
This function is also called the percent point function or quantile
function.
r� r� z$p must be in the range 0.0 < p < 1.0z-cdf() not defined when sigma at or below zero)r r� r� r� )r� r� r& r& r' �inv_cdf� s
zNormalDist.inv_cdfrt c s � �fdd�t d� �D �S )an Divide into *n* continuous intervals with equal probability.
Returns a list of (n - 1) cut points separating the intervals.
Set *n* to 4 for quartiles (the default). Set *n* to 10 for deciles.
Set *n* to 100 for percentiles which gives the 99 cuts points that
separate the normal distribution in to 100 equal sized groups.
c s g | ]}�� |� ��qS r& )r� r� �r, r� r& r' r� � s z(NormalDist.quantiles.<locals>.<listcomp>r( )rw )r� r, r& r� r' r � s zNormalDist.quantilesc C s t |t�std��| | }}|j|jf|j|jfk r>|| }}|j|j }}|rT|s\td��|| }t|j|j �}|s�dt|d|j t d� � S |j| |j| }|j|j t |d |t
|| � � } || | }
|| | } dt|� |
�|� |
� �t|� | �|� | � � S )a� Compute the overlapping coefficient (OVL) between two normal distributions.
Measures the agreement between two normal probability distributions.
Returns a value between 0.0 and 1.0 giving the overlapping area in
the two underlying probability density functions.
>>> N1 = NormalDist(2.4, 1.6)
>>> N2 = NormalDist(3.2, 2.0)
>>> N1.overlap(N2)
0.8035050657330205
z$Expected another NormalDist instancez(overlap() not defined when sigma is zeror� r� ) rc r rG r� r� r r r r r r r� ) r� �other�X�YZX_varZY_varZdvZdmrS �b�x1�x2r& r& r' �overlap� s"
( zNormalDist.overlapc C s | j S )z+Arithmetic mean of the normal distribution.�r� �r� r& r& r' r � s zNormalDist.meanc C s | j S )z,Return the median of the normal distributionr� r� r& r& r' r � s zNormalDist.medianc C s | j S )z�Return the mode of the normal distribution
The mode is the value x where which the probability density
function (pdf) takes its maximum value.
r� r� r& r& r' r � s zNormalDist.modec C s | j S )z.Standard deviation of the normal distribution.�r� r� r& r& r' r � s zNormalDist.stdevc C s
| j d S )z!Square of the standard deviation.r� r� r� r& r& r' r s zNormalDist.variancec C s8 t |t�r&t| j|j t| j|j��S t| j| | j�S )aj Add a constant or another NormalDist instance.
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leaving sigma unchanged.
If *other* is a NormalDist, add both the means and the variances.
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independent or if they are jointly normally distributed.
�rc r r� r r� �r� r� r& r& r' �__add__ s
zNormalDist.__add__c C s8 t |t�r&t| j|j t| j|j��S t| j| | j�S )as Subtract a constant or another NormalDist instance.
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leaving sigma unchanged.
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Mathematically, this works only if the two distributions are
independent or if they are jointly normally distributed.
r� r� r& r& r' �__sub__ s
zNormalDist.__sub__c C s t | j| | jt|� �S )z�Multiply both mu and sigma by a constant.
Used for rescaling, perhaps to change measurement units.
Sigma is scaled with the absolute value of the constant.
�r r� r� r r� r& r& r' �__mul__% s zNormalDist.__mul__c C s t | j| | jt|� �S )z�Divide both mu and sigma by a constant.
Used for rescaling, perhaps to change measurement units.
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ztimedelta.__gt__c C s t | �� |�� �S r� )r � _getstater� r r r r � s ztimedelta._cmpc C s | j dkrt| �� �| _ | j S )Nr �r� �hashr� r� r r r �__hash__� s
ztimedelta.__hash__c C s | j dkp | jdkp | jdkS r� r� r� r r r �__bool__ s
��ztimedelta.__bool__c C s | j | j| jfS r� r� r� r r r r�
s ztimedelta._getstatec C s | j | �� fS r� �r� r� r� r r r �
__reduce__
s ztimedelta.__reduce__N)r r r r r r r )%r� r� r� �__doc__� __slots__r� r� r� r� �propertyrJ r9 r; r� �__radd__r� r� r� r� r� r� �__rmul__r� r� r� r� r� r� r� r� r� r� r r� r� r� r� r r r r rK � sR �
e
rK i6e�r� r� r� r� )rJ r7 r8 r9 r; r� c @ s@ e Zd ZdZdZdDdd�Zedd� �Zedd � �Zed
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edd� �Z dd� Z dd� Z
dd� Zdd� Zdd� ZeZedd� �Zed d � �Zed d � �Zd d!� Zd"d#� ZdEd$d%�Zd&d'� Zd(d)� Zd*d+� Zd,d-� Z d.d/� Z d0d1� Z d2d3� Z d4d5� Z e Z!d6d7� Z"d8d9� Z#d:d;� Z$d<d=� Z%d>d?� Z&d@dA� Z'dBdC� Z(dS )F�datea� Concrete date type.
Constructors:
__new__()
fromtimestamp()
today()
fromordinal()
Operators:
__repr__, __str__
__eq__, __le__, __lt__, __ge__, __gt__, __hash__
__add__, __radd__, __sub__ (add/radd only with timedelta arg)
Methods:
timetuple()
toordinal()
weekday()
isoweekday(), isocalendar(), isoformat()
ctime()
strftime()
Properties (readonly):
year, month, day
)�_year�_month�_dayr� Nc C s� |dkr�t |ttf�r�t|�dkr�dt|dd� � krBdkr�n nTt |t�r|z|�d�}W n tk
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Nr
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| |||�S )z;Construct a date from a POSIX timestamp (like time.time()).)r. � localtime) r� �tr r0 r1 r2 r3 r4 �weekday�jday�dstr r r �
fromtimestampU s zdate.fromtimestampc C s t �� }| �|�S )z"Construct a date from time.time().�r. �timer� �r� r� r r r �today[ s z
date.todayc C s t |�\}}}| |||�S )z�Construct a date from a proleptic Gregorian ordinal.
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)r+ )r� r* r r0 r1 r r r � fromordinala s zdate.fromordinalc C sH t |t�std��z| t|�� W S tk
rB td|����Y nX dS )z5Construct a date from the output of date.isoformat().�#fromisoformat: argument must be str�Invalid isoformat string: N)r} r~ r rj � Exceptionr> )r� � date_stringr r r �
fromisoformatk s
zdate.fromisoformatc C s� t | krtks$n td|� ���d| k r8dk s�n d}|dkrrt|dd�d }|dksn|dkrrt|�rrd }|r�td
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���|d d |d }t|�}|| }| t|�� S )z|Construct a date from the ISO year, week number and weekday.
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day_offsetZday_1Zord_dayr r r �fromisocalendarw s$ �zdate.fromisocalendarc C s d| j j| j j| j| j| jf S )a5 Convert to formal string, for repr().
>>> dt = datetime(2010, 1, 1)
>>> repr(dt)
'datetime.datetime(2010, 1, 1, 0, 0)'
>>> dt = datetime(2010, 1, 1, tzinfo=timezone.utc)
>>> repr(dt)
'datetime.datetime(2010, 1, 1, 0, 0, tzinfo=datetime.timezone.utc)'
z%s.%s(%d, %d, %d))r� r� r� r� r� r� r� r r r r� � s �z
date.__repr__c C s. | � � d pd}dt| t| j | j| jf S )� Return ctime() style string.r- z%s %s %2d 00:00:00 %04d)� toordinal� _DAYNAMES� _MONTHNAMESr� r� r� �r� r� r r r �ctime� s �z
date.ctimec C s t | || �� �S )zFormat using strftime().)rf r_ �r� rB r r r r] � s z
date.strftimec C s: t |t�s tdt|�j ��t|�dkr2| �|�S t| �S �Nzmust be str, not %sr �r} r~ r r� r� rX r] r r r r �
__format__� s
zdate.__format__c C s d| j | j| jf S )z�Return the date formatted according to ISO.
This is 'YYYY-MM-DD'.
References:
- http://www.w3.org/TR/NOTE-datetime
- http://www.cl.cam.ac.uk/~mgk25/iso-time.html
z%04d-%02d-%02d)r� r� r� r� r r r � isoformat� s zdate.isoformatc C s | j S )z
year (1-9999))r� r� r r r r � s z date.yearc C s | j S )z month (1-12))r� r� r r r r � s z
date.monthc C s | j S )z
day (1-31))r� r� r r r r � s zdate.dayc C s t | j| j| jdddd�S )�9Return local time tuple compatible with time.localtime().r r )r5 r� r� r� r� r r r r_ � s �zdate.timetuplec C s t | j| j| j�S )z�Return proleptic Gregorian ordinal for the year, month and day.
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contribute to the result.
)r r� r� r� r� r r r r � s zdate.toordinalc C s: |dkr| j }|dkr | j}|dkr*| j}t| �|||�S )z;Return a new date with new values for the specified fields.N)r� r� r� r� )r� r r r r r r r[ � s z date.replacec C s t |t�r| �|�dkS tS r� �r} r� r r� r� r r r r� � s
z date.__eq__c C s t |t�r| �|�dkS tS r� r r� r r r r� s
z date.__le__c C s t |t�r| �|�dk S tS r� r r� r r r r� s
z date.__lt__c C s t |t�r| �|�dkS tS r� r r� r r r r�
s
z date.__ge__c C s t |t�r| �|�dkS tS r� r r� r r r r� s
z date.__gt__c C sB | j | j| j }}}|j |j|j }}}t|||f|||f�S r� )r� r� r� r )r� r� r r0 r1 Zy2Zm2Zd2r r r r s z date._cmpc C s | j dkrt| �� �| _ | j S )�Hash.r r� r� r r r r� s
z
date.__hash__c C sJ t |t�rF| �� |j }d| k r,tkr>n nt| ��|�S td��tS )zAdd a date to a timedelta.r �result out of range) r} rK r rJ � _MAXORDINALr� r r� r� )r� r� �or r r r� % s
z date.__add__c C sD t |t�r| t|j � S t |t�r@| �� }|�� }t|| �S tS )z.Subtract two dates, or a date and a timedelta.)r} rK rJ r� r r� )r� r� �days1�days2r r r r� 0 s
z date.__sub__c C s | � � d d S )z:Return day of the week, where Monday == 0 ... Sunday == 6.r, r- �r r� r r r r� : s z date.weekdayc C s | � � d pdS )z:Return day of the week, where Monday == 1 ... Sunday == 7.r- r r� r r r �
isoweekday@ s zdate.isoweekdayc C s� | j }t|�}t| j | j| j�}t|| d�\}}|dk r^|d8 }t|�}t|| d�\}}n$|dkr�|t|d �kr�|d7 }d}||d |d fS )a� Return a 3-tuple containing ISO year, week number, and weekday.
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containing the year's first Thursday; everything else derives
from that.
The first week is 1; Monday is 1 ... Sunday is 7.
ISO calendar algorithm taken from
http://www.phys.uu.nl/~vgent/calendar/isocalendar.htm
(used with permission)
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zdate.isocalendarc C s& t | jd�\}}t||| j| jg�fS �N� )r& r� r� r� r� )r� �yhi�ylor r r r� c s zdate._getstatec C s" |\}}| _ | _|d | | _d S r# )r� r� r� )r� �stringr% r& r r r �
__setstateg s zdate.__setstatec C s | j | �� fS r� r� r� r r r r� k s zdate.__reduce__)NN)NNN))r� r� r� r� r� r� � classmethodr� r r r r
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r� r" r� c @ s< e Zd ZdZdZdd� Zdd� Zdd� Zd d
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S )r� z}Abstract base class for time zone info classes.
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r c C s t d��dS )z%datetime -> string name of time zone.z&tzinfo subclass must override tzname()N��NotImplementedError�r� �dtr r r rV | s z
tzinfo.tznamec C s t d��dS )zIdatetime -> timedelta, positive for east of UTC, negative for west of UTCz)tzinfo subclass must override utcoffset()Nr* r, r r r rT � s ztzinfo.utcoffsetc C s t d��dS )z�datetime -> DST offset as timedelta, positive for east of UTC.
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offset.
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tzinfo.dstc C s� t |t�std��|j| k r$td��|�� }|dkr<td��|�� }|dkrTtd��|| }|r�||7 }|�� }|dkr�td��|| S )z*datetime in UTC -> datetime in local time.z&fromutc() requires a datetime argumentzdt.tzinfo is not selfNz0fromutc() requires a non-None utcoffset() resultz*fromutc() requires a non-None dst() resultz;fromutc(): dt.dst gave inconsistent results; cannot convert)r} �datetimer r� r> rT r� )r� r- ZdtoffZdtdst�deltar r r �fromutc� s"
ztzinfo.fromutcc C sf t | dd �}|r|� }nd}t | dd �}|r4|� }nt | dd �pBd }|d krV| j|fS | j||fS d S )N�__getinitargs__r � __getstate__�__dict__)rY r� )r� Z getinitargsr� �getstate�stater r r r� � s
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r� r� r� r� r� rV rT r� r0 r� r r r r r� u s r� c @ s* e Zd ZdZdZdBdd�dd�Zedd � �Zed
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Constructors:
__new__()
Operators:
__repr__, __str__
__eq__, __le__, __lt__, __ge__, __gt__, __hash__
Methods:
strftime()
isoformat()
utcoffset()
tzname()
dst()
Properties (readonly):
hour, minute, second, microsecond, tzinfo, fold
)�_hour�_minute�_second� _microsecond�_tzinfor� �_foldr N�r� c C s� t |ttf�r�t|�dkr�t|dd� �d@ dk r�t |t�rhz|�d�}W n tk
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z�Constructor.
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second, microsecond (default to zero)
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fold (keyword only, default to zero)
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z time.__new__c C s | j S �z hour (0-23)�r6 r� r r r r� � s z time.hourc C s | j S �z
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second (0-59)�r8 r� r r r r� s z time.secondc C s | j S �zmicrosecond (0-999999)�r9 r� r r r rR s ztime.microsecondc C s | j S �ztimezone info object�r: r� r r r r� s z time.tzinfoc C s | j S r� �r; r� r r r r� s z time.foldc C s$ t |t�r | j|dd�dkS tS d S )NT�� allow_mixedr �r} r� r r� r� r r r r� s
z time.__eq__c C s t |t�r| �|�dkS tS d S r� rL r� r r r r� # s
z time.__le__c C s t |t�r| �|�dk S tS d S r� rL r� r r r r� ) s
z time.__lt__c C s t |t�r| �|�dkS tS d S r� rL r� r r r r� / s
z time.__ge__c C s t |t�r| �|�dkS tS d S r� rL r� r r r r� 5 s
z time.__gt__Fc
C s� | j }|j }d }}||kr"d}n| �� }|�� }||k}|rht| j| j| j| jf|j|j|j|jf�S |d ksx|d kr�|r�dS td��| jd | j |tdd� }|jd |j |tdd� } t|| j| jf| |j|jf�S )NTr z$cannot compare naive and aware timesr� r rH ) r: rT r r6 r7 r8 r9 r rK )
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time.__hash__c C s | � � }t|�S )z=Return formatted timezone offset (+xx:xx) or an empty string.)rT rO )r� rL r r r �_tzstrn s z time._tzstrc C s� | j dkr d| j| j f }n| jdkr2d| j }nd}d| jj| jj| j| j|f }| jdk rx|dd� d| j d }| jr�|dd� d
}|S ) �%Convert to formal string, for repr().r z, %d, %dz, %drD z%s.%s(%d, %d%s)Nr � , tzinfo=%r�)� , fold=1)) r9 r8 r� r� r� r6 r7 r: r; �r� rM r r r r� s s
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time.__repr__r6 c C s0 t | j| j| j| j|�}| �� }|r,||7 }|S )a� Return the time formatted according to ISO.
The full format is 'HH:MM:SS.mmmmmm+zz:zz'. By default, the fractional
part is omitted if self.microsecond == 0.
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terms of the time to include. Valid options are 'auto', 'hours',
'minutes', 'seconds', 'milliseconds' and 'microseconds'.
)rC r6 r7 r8 r9 rT )r� rA rM r� r r r r � s
�ztime.isoformatc C sH t |t�std��z| t|�� W S tk
rB td|����Y nX dS )z0Construct a time from the output of isoformat().r r N)r} r~ r r| r r> )r� Z time_stringr r r r � s
ztime.fromisoformatc C s( ddd| j | j| jdddf }t| ||�S )z{Format using strftime(). The date part of the timestamp passed
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ztime.__format__c C s( | j dkrdS | j �d�}td|� |S )z^Return the timezone offset as timedelta, positive east of UTC
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ztime.utcoffsetc C s& | j dkrdS | j �d�}t|� |S �a Return the timezone name.
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"-5:00", "EDT", "US/Eastern", "America/New York" are all valid replies.
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z time.tznamec C s( | j dkrdS | j �d�}td|� |S �aq Return 0 if DST is not in effect, or the DST offset (as timedelta
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need to consult dst() unless you're interested in displaying the DST
info.
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ztime.dstTc C sl |dkr| j }|dkr | j}|dkr*| j}|dkr8| j}|dkrF| j}|dkrT| j}t| �||||||d�S )z;Return a new time with new values for the specified fields.NTr< )r� r� r� rR r� r; r� )r� r� r� r� rR r� r� r r r r[ � s z time.replacer# c C sp t | jd�\}}t |d�\}}| j}| jr:|dkr:|d7 }t|| j| j|||g�}| jd krb|fS || jfS d S �Nr$ r# � )r& r9 r6 r; r� r7 r8 r: )r� �protocol�us2�us3�us1rc � basestater r r r� � s �
ztime._getstatec C st |d k rt |t�std��|\}| _| _}}}|dkrHd| _|d | _n d| _|| _|d> |B d> |B | _|| _d S )N�bad tzinfo state argr= r rb r rg ) r} �
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ztimedelta.__truediv__c C s* t |t�r&| �� |�� }tdd|�S tS r� )r� rO r� r� )r� r� r� r r r �__mod__� s
ztimedelta.__mod__c C s4 t |t�r0t| �� |�� �\}}|tdd|�fS tS r� )r� rO r* r� r� )r� r� r� r� r r r �
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ztimedelta.__eq__c C s t |t�r| �|�dkS tS d S r� r� r� r r r �__le__� s
ztimedelta.__le__c C s t |t�r| �|�dk S tS d S r� r� r� r r r �__lt__� s
ztimedelta.__lt__c C s t |t�r| �|�dkS tS d S r� r� r� r r r �__ge__� s
ztimedelta.__ge__c C s t |t�r| �|�dkS tS d S r� r� r� r r r �__gt__� s
ztimedelta.__gt__c C s t |t�st�t| �� |�� �S r� )r� rO r r � _getstater� r r r r � s ztimedelta._cmpc C s | j dkrt| �� �| _ | j S )Nr �r� �hashr� r� r r r �__hash__� s
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rO i6e�r� r� r� r� )rN r; r< r= r? r� c @ s@ e Zd ZdZdZdDdd�Zedd� �Zedd � �Zed
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Constructors:
__new__()
fromtimestamp()
today()
fromordinal()
Operators:
__repr__, __str__
__eq__, __le__, __lt__, __ge__, __gt__, __hash__
__add__, __radd__, __sub__ (add/radd only with timedelta arg)
Methods:
timetuple()
toordinal()
weekday()
isoweekday(), isocalendar(), isoformat()
ctime()
strftime()
Properties (readonly):
year, month, day
)�_year�_month�_dayr� Nc C s� |dkr�t |ttf�r�t|�dkr�dt|dd� � krBdkr�n nTt |t�r|z|�d�}W n tk
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fromtimestampU s zdate.fromtimestampc C s t �� }| �|�S )z"Construct a date from time.time().�r2 �timer �r� r� r r r �today[ s z
date.todayc C s t |�\}}}| |||�S )z�Construct a date from a proleptic Gregorian ordinal.
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fromisoformatk s
zdate.fromisoformatc C s� t | krtks$n td|� ���d| k r8dk s�n d}|dkrrt|dd�d }|dksn|dkrrt|�rrd }|r�td
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���|d d |d }t|�}|| }| t|�� S )z|Construct a date from the ISO year, week number and weekday.
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day_offsetZday_1Zord_dayr r r �fromisocalendarw s$ �zdate.fromisocalendarc C s d| j j| j j| j| j| jf S )a5 Convert to formal string, for repr().
>>> dt = datetime(2010, 1, 1)
>>> repr(dt)
'datetime.datetime(2010, 1, 1, 0, 0)'
>>> dt = datetime(2010, 1, 1, tzinfo=timezone.utc)
>>> repr(dt)
'datetime.datetime(2010, 1, 1, 0, 0, tzinfo=datetime.timezone.utc)'
z%s.%s(%d, %d, %d))r� r� r� r� r� r� r� r r r r� � s �z
date.__repr__c C s. | � � d pd}dt| t| j | j| jf S )� Return ctime() style string.r1 z%s %s %2d 00:00:00 %04d)� toordinal� _DAYNAMES� _MONTHNAMESr� r� r� �r� r� r r r �ctime� s �z
date.ctimec C s t | || �� �S )zFormat using strftime().)rj rc �r� rF r r r ra � s z
date.strftimec C s: t |t�s tdt|�j ��t|�dkr2| �|�S t| �S �Nzmust be str, not %sr �r� r� r� r� r� r\ ra r r r r �
__format__� s
zdate.__format__c C s d| j | j| jf S )z�Return the date formatted according to ISO.
This is 'YYYY-MM-DD'.
References:
- http://www.w3.org/TR/NOTE-datetime
- http://www.cl.cam.ac.uk/~mgk25/iso-time.html
z%04d-%02d-%02d)r� r� r� r� r r r � isoformat� s zdate.isoformatc C s | j S )z
year (1-9999))r� r� r r r r � s z date.yearc C s | j S )z month (1-12))r� r� r r r r � s z
date.monthc C s | j S )z
day (1-31))r� r� r r r r! � s zdate.dayc C s t | j| j| jdddd�S )�9Return local time tuple compatible with time.localtime().r r )r9 r� r� r� r� r r r rc � s �zdate.timetuplec C s t | j| j| j�S )z�Return proleptic Gregorian ordinal for the year, month and day.
January 1 of year 1 is day 1. Only the year, month and day values
contribute to the result.
)r# r� r� r� r� r r r r � s zdate.toordinalc C s: |dkr| j }|dkr | j}|dkr*| j}t| �|||�S )z;Return a new date with new values for the specified fields.N)r� r� r� r� )r� r r r! r r r r_ � s z date.replacec C s t |t�r| �|�dkS tS r� �r� r� r r� r� r r r r� � s
z date.__eq__c C s t |t�r| �|�dkS tS r� r r� r r r r� s
z date.__le__c C s t |t�r| �|�dk S tS r� r r� r r r r� s
z date.__lt__c C s t |t�r| �|�dkS tS r� r r� r r r r�
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z date.__ge__c C s t |t�r| �|�dkS tS r� r r� r r r r� s
z date.__gt__c C sP t |t�st�| j| j| j }}}|j|j|j }}}t|||f|||f�S r� )r� r� r r� r� r� r )r� r� r r4 r5 Zy2Zm2Zd2r r r r s z date._cmpc C s | j dkrt| �� �| _ | j S )�Hash.r r� r� r r r r� s
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date.__hash__c C sJ t |t�rF| �� |j }d| k r,tkr>n nt| ��|�S td��tS )zAdd a date to a timedelta.r �result out of range) r� rO r rN � _MAXORDINALr� r r� r� )r� r� �or r r r� % s
z date.__add__c C sD t |t�r| t|j � S t |t�r@| �� }|�� }t|| �S tS )z.Subtract two dates, or a date and a timedelta.)r� rO rN r� r r� )r� r� �days1�days2r r r r� 0 s
z date.__sub__c C s | � � d d S )z:Return day of the week, where Monday == 0 ... Sunday == 6.r0 r1 �r r� r r r r� : s z date.weekdayc C s | � � d pdS )z:Return day of the week, where Monday == 1 ... Sunday == 7.r1 r" r� r r r �
isoweekday@ s zdate.isoweekdayc C s� | j }t|�}t| j | j| j�}t|| d�\}}|dk r^|d8 }t|�}t|| d�\}}n$|dkr�|t|d �kr�|d7 }d}||d |d fS )a� Return a 3-tuple containing ISO year, week number, and weekday.
The first ISO week of the year is the (Mon-Sun) week
containing the year's first Thursday; everything else derives
from that.
The first week is 1; Monday is 1 ... Sunday is 7.
ISO calendar algorithm taken from
http://www.phys.uu.nl/~vgent/calendar/isocalendar.htm
(used with permission)
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zdate.isocalendarc C s& t | jd�\}}t||| j| jg�fS �N� )r* r� r� r� r� )r� �yhi�ylor r r r� c s zdate._getstatec C s" |\}}| _ | _|d | | _d S r' )r� r� r� )r� �stringr) r* r r r �
__setstateg s zdate.__setstatec C s | j | �� fS r� r� r� r r r r� k s zdate.__reduce__)NN)NNN))r� r� r� r� r� r� � classmethodr r r r
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r� r r� c @ s< e Zd ZdZdZdd� Zdd� Zdd� Zd d
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S )r� z}Abstract base class for time zone info classes.
Subclasses must override the name(), utcoffset() and dst() methods.
r c C s t d��dS )z%datetime -> string name of time zone.z&tzinfo subclass must override tzname()N��NotImplementedError�r� �dtr r r rZ | s z
tzinfo.tznamec C s t d��dS )zIdatetime -> timedelta, positive for east of UTC, negative for west of UTCz)tzinfo subclass must override utcoffset()Nr. r0 r r r rX � s ztzinfo.utcoffsetc C s t d��dS )z�datetime -> DST offset as timedelta, positive for east of UTC.
Return 0 if DST not in effect. utcoffset() must include the DST
offset.
z#tzinfo subclass must override dst()Nr. r0 r r r r� � s z
tzinfo.dstc C s� t |t�std��|j| k r$td��|�� }|dkr<td��|�� }|dkrTtd��|| }|r�||7 }|�� }|dkr�td��|| S )z*datetime in UTC -> datetime in local time.z&fromutc() requires a datetime argumentzdt.tzinfo is not selfNz0fromutc() requires a non-None utcoffset() resultz*fromutc() requires a non-None dst() resultz;fromutc(): dt.dst gave inconsistent results; cannot convert)r� �datetimer� r� rB rX r� )r� r1 ZdtoffZdtdst�deltar r r �fromutc� s"
ztzinfo.fromutcc C sf t | dd �}|r|� }nd}t | dd �}|r4|� }nt | dd �pBd }|d krV| j|fS | j||fS d S )N�__getinitargs__r � __getstate__�__dict__)r] r� )r� Z getinitargsr� �getstate�stater r r r� � s
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r� r� r� r� r� rZ rX r� r4 r� r r r r r� u s r� c @ s* e Zd ZdZdZdBdd�dd�Zedd � �Zed
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dd� Zdd� Zdd� Zd d � ZdCd d �Zd!d"� Zd#d$� Zd%d&� ZdDd(d)�ZeZed*d+� �Zd,d-� Zd.d/� Zd0d1� Z d2d3� Z d4d5� Z dEdd�d7d8�Z dFd:d;�Z d<d=� Z!d>d?� Z"d@dA� Z#dS )Gr a< Time with time zone.
Constructors:
__new__()
Operators:
__repr__, __str__
__eq__, __le__, __lt__, __ge__, __gt__, __hash__
Methods:
strftime()
isoformat()
utcoffset()
tzname()
dst()
Properties (readonly):
hour, minute, second, microsecond, tzinfo, fold
)�_hour�_minute�_second� _microsecond�_tzinfor� �_foldr N�r� c C s� t |ttf�r�t|�dkr�t|dd� �d@ dk r�t |t�rhz|�d�}W n tk
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z�Constructor.
Arguments:
hour, minute (required)
second, microsecond (default to zero)
tzinfo (default to None)
fold (keyword only, default to zero)
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z time.__new__c C s | j S �z hour (0-23)�r: r� r r r r� � s z time.hourc C s | j S �z
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second (0-59)�r< r� r r r r� s z time.secondc C s | j S �zmicrosecond (0-999999)�r= r� r r r rV s ztime.microsecondc C s | j S �ztimezone info object�r> r� r r r r� s z time.tzinfoc C s | j S r� �r? r� r r r r� s z time.foldc C s$ t |t�r | j|dd�dkS tS d S )NT�� allow_mixedr �r� r r r� r� r r r r� s
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z time.__lt__c C s t |t�r| �|�dkS tS d S r� rP r� r r r r� / s
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z time.__gt__Fc
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d��| jd | j |t dd� }|jd |j |t dd� } t|| j| j f| |j|j f�S )NTr z$cannot compare naive and aware timesr� r rL ) r� r r r> rX r r: r; r< r= r� rO )
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time.__hash__c C s | � � }t|�S )z=Return formatted timezone offset (+xx:xx) or an empty string.)rX rS )r� rP r r r �_tzstrn s z time._tzstrc C s� | j dkr d| j| j f }n| jdkr2d| j }nd}d| jj| jj| j| j|f }| jdk r�|dd� dksrt�|dd� d | j d }| j r�|dd� dks�t�|dd� d
}|S ) �%Convert to formal string, for repr().r z, %d, %dz, %drH z%s.%s(%d, %d%s)Nr �)� , tzinfo=%r� , fold=1))
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time.__repr__r: c C s0 t | j| j| j| j|�}| �� }|r,||7 }|S )a� Return the time formatted according to ISO.
The full format is 'HH:MM:SS.mmmmmm+zz:zz'. By default, the fractional
part is omitted if self.microsecond == 0.
The optional argument timespec specifies the number of additional
terms of the time to include. Valid options are 'auto', 'hours',
'minutes', 'seconds', 'milliseconds' and 'microseconds'.
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ztime.__format__c C s( | j dkrdS | j �d�}td|� |S )z^Return the timezone offset as timedelta, positive east of UTC
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ztime.utcoffsetc C s& | j dkrdS | j �d�}t|� |S �a Return the timezone name.
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it mean anything in particular. For example, "GMT", "UTC", "-500",
"-5:00", "EDT", "US/Eastern", "America/New York" are all valid replies.
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z time.tznamec C s( | j dkrdS | j �d�}td|� |S �aq Return 0 if DST is not in effect, or the DST offset (as timedelta
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the UTC offset returned by utcoffset() if applicable, so there's no
need to consult dst() unless you're interested in displaying the DST
info.
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ztime.dstTc C sl |dkr| j }|dkr | j}|dkr*| j}|dkr8| j}|dkrF| j}|dkrT| j}t| �||||||d�S )z;Return a new time with new values for the specified fields.NTr@ )r� r� r� rV r� r? r� )r� r� r� r� rV r� r� r r r r_ � s z time.replacer' c C sp t | jd�\}}t |d�\}}| j}| jr:|dkr:|d7 }t|| j| j|||g�}| jd krb|fS || jfS d S �Nr( r' � )r* r= r: r? r� r; r< r> )r� �protocol�us2�us3�us1rg � basestater r r r� � s �
ztime._getstatec C st |d k rt |t�std��|\}| _| _}}}|dkrHd| _|d | _n d| _|| _|d> |B d> |B | _|| _d S )N�bad tzinfo state argrA r rf r rk ) r� �
_tzinfo_classr� r; r< r? r: r= r> )r� r+ r� rg rj rh ri r r r r, � s ztime.__setstatec C s | j | �|�fS r� r� �r� rg r r r �
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��Construct a datetime from a POSIX timestamp (like time.time()).
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zdatetime._fromtimestampc C s t |� | �||dk |�S )rs N)r� r| )r� r� r� r r r r � s zdatetime.fromtimestampc C s | � |dd�S )z6Construct a naive UTC datetime from a POSIX timestamp.TN)r| r r r r �utcfromtimestamp� s zdatetime.utcfromtimestampc C s t �� }| �||�S )zBConstruct a datetime from time.time() and optional time zone info.r )r� r� r� r r r �now� s z datetime.nowc C s t �� }| �|�S )z*Construct a UTC datetime from time.time().)r2 r r} r r r r �utcnow� s zdatetime.utcnowTc C s\ t |t�std��t |t�s$td��|dkr2|j}| |j|j|j|j|j |j
|j ||j d� S )z8Construct a datetime from a given date and a given time.z%date argument must be a date instancez%time argument must be a time instanceTr@ )
r� � _date_classr� � _time_classr� r r r! r� r� r� rV r� )r� r� r r� r r r �combine� s
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zdatetime.fromisoformatc C sD | � � }|dkrd}n|r d}nd}t| j| j| j| j| j| j|�S )r Nr r r )r� r9 r r r! r� r� r� )r� r� r r r rc � s �zdatetime.timetuplec
s� t ddd�� d}| � tdd� }� fdd�}||�| }|| }||�}||kr�|| |f| j }||�| }||kr�|S n|| }||ks�t�|| }||�} | |kr�|S ||kr�|S ttf| j ||�S )z Return integer POSIX timestamp.� r r� r c s> t �| �d d� \}}}}}}t||||||�� tdd� S )Nr0 r r )r2 r� r2 rO )ri r r4 r5 r6 r7 r8 �Zepochr r �local� s z datetime._mktime.<locals>.local)r2 rO r� r �maxrv )
r� r{ r� r� r� Zu1�t1Zu2r� �t2r r� r �_mktime� s* zdatetime._mktimec C s0 | j dkr | �� }|| jd S | t �� S dS )z Return POSIX timestamp as floatNr� )r> r� rV �_EPOCHr� r] r r r � timestamp� s
zdatetime.timestampc C sT | � � }|r| |8 } | j| j| j }}}| j| j| j }}}t||||||d�S )z4Return UTC time tuple compatible with time.gmtime().r )rX r r r! r� r� r� r9 )r� rf r r4 r5 r6 r7 r8 r r r � utctimetuple s zdatetime.utctimetuplec C s t | j| j| j�S )zReturn the date part.)r� r� r� r� r� r r r r� s z
datetime.datec C s t | j| j| j| j| jd�S )z'Return the time part, with tzinfo None.r@ )r r� r� r� rV r� r� r r r r s z
datetime.timec C s t | j| j| j| j| j| jd�S )z'Return the time part, with same tzinfo.r@ )r r� r� r� rV r> r� r� r r r �timetz s �zdatetime.timetzc
C s� |dkr| j }|dkr | j}|dkr*| j}|dkr8| j}|dkrF| j}|dkrT| j}|dkrb| j}|dkrp| j}| dkr~| j} t | �||||||||| d� S )z?Return a new datetime with new values for the specified fields.NTr@ )
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r� r r r! r� r� r� rV r� r� r r r r_ s. �zdatetime.replacec C s\ | j d kr| �� }n| t tdd� }t�|�}t|d d� � }|j}|j}t t|d�|�S )Nr r� r0 )
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zdatetime._local_timezonec C s� |d kr| � � }nt|t�s$td��| j}|d krF| � � }|�| �}n,|�| �}|d krr| jd d�� � }|�| �}||kr~| S | | j|d�}|�|�S )Nz)tz argument must be an instance of tzinfo�r� )r� r� r� r� rX r_ r4 )r� r� rQ Zmyoffsetr r r r �
astimezone@ s
zdatetime.astimezonec C s: | � � d pd}dt| t| j | j| j| j| j| jf S )r r1 z %s %s %2d %02d:%02d:%02d %04d) r r r r� r� r: r; r< r� r r r r r [ s �zdatetime.ctime�Tr: c C sN d| j | j| j|f t| j| j| j| j|� }| �� }t |�}|rJ||7 }|S )a� Return the time formatted according to ISO.
The full format looks like 'YYYY-MM-DD HH:MM:SS.mmmmmm'.
By default, the fractional part is omitted if self.microsecond == 0.
If self.tzinfo is not None, the UTC offset is also attached, giving
giving a full format of 'YYYY-MM-DD HH:MM:SS.mmmmmm+HH:MM'.
Optional argument sep specifies the separator between date and
time, default 'T'.
The optional argument timespec specifies the number of additional
terms of the time to include. Valid options are 'auto', 'hours',
'minutes', 'seconds', 'milliseconds' and 'microseconds'.
z%04d-%02d-%02d%c)
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fileinput.cpython-38.pyc 0000644 00000032077 15145007335 0011207 0 ustar 00 U
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Helper class to quickly write a loop over all standard input files.
Typical use is:
import fileinput
for line in fileinput.input():
process(line)
This iterates over the lines of all files listed in sys.argv[1:],
defaulting to sys.stdin if the list is empty. If a filename is '-' it
is also replaced by sys.stdin and the optional arguments mode and
openhook are ignored. To specify an alternative list of filenames,
pass it as the argument to input(). A single file name is also allowed.
Functions filename(), lineno() return the filename and cumulative line
number of the line that has just been read; filelineno() returns its
line number in the current file; isfirstline() returns true iff the
line just read is the first line of its file; isstdin() returns true
iff the line was read from sys.stdin. Function nextfile() closes the
current file so that the next iteration will read the first line from
the next file (if any); lines not read from the file will not count
towards the cumulative line count; the filename is not changed until
after the first line of the next file has been read. Function close()
closes the sequence.
Before any lines have been read, filename() returns None and both line
numbers are zero; nextfile() has no effect. After all lines have been
read, filename() and the line number functions return the values
pertaining to the last line read; nextfile() has no effect.
All files are opened in text mode by default, you can override this by
setting the mode parameter to input() or FileInput.__init__().
If an I/O error occurs during opening or reading a file, the OSError
exception is raised.
If sys.stdin is used more than once, the second and further use will
return no lines, except perhaps for interactive use, or if it has been
explicitly reset (e.g. using sys.stdin.seek(0)).
Empty files are opened and immediately closed; the only time their
presence in the list of filenames is noticeable at all is when the
last file opened is empty.
It is possible that the last line of a file doesn't end in a newline
character; otherwise lines are returned including the trailing
newline.
Class FileInput is the implementation; its methods filename(),
lineno(), fileline(), isfirstline(), isstdin(), nextfile() and close()
correspond to the functions in the module. In addition it has a
readline() method which returns the next input line, and a
__getitem__() method which implements the sequence behavior. The
sequence must be accessed in strictly sequential order; sequence
access and readline() cannot be mixed.
Optional in-place filtering: if the keyword argument inplace=1 is
passed to input() or to the FileInput constructor, the file is moved
to a backup file and standard output is directed to the input file.
This makes it possible to write a filter that rewrites its input file
in place. If the keyword argument backup=".<some extension>" is also
given, it specifies the extension for the backup file, and the backup
file remains around; by default, the extension is ".bak" and it is
deleted when the output file is closed. In-place filtering is
disabled when standard input is read. XXX The current implementation
does not work for MS-DOS 8+3 filesystems.
XXX Possible additions:
- optional getopt argument processing
- isatty()
- read(), read(size), even readlines()
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d:dd�Zd;dd�Zdd � Zd d � Zd d � Zd!d"� Zd#d$� Zd%d&� ZdZd'd(� Zd)d*� Zd+Zd,d-� Zd.d/� Zd0d1� Z d2d3� Z d4d5� Z d6d7� Z d8d9� Z dS )<r a� Store a sequence of fields, reading multipart/form-data.
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another FieldStorage or MiniFieldStorage object. If it's a single
object, it has the following attributes:
name: the field name, if specified; otherwise None
filename: the filename, if specified; otherwise None; this is the
client side filename, *not* the file name on which it is
stored (that's a temporary file you don't deal with)
value: the value as a *string*; for file uploads, this
transparently reads the file every time you request the value
and returns *bytes*
file: the file(-like) object from which you can read the data *as
bytes* ; None if the data is stored a simple string
type: the content-type, or None if not specified
type_options: dictionary of options specified on the content-type
line
disposition: content-disposition, or None if not specified
disposition_options: dictionary of corresponding options
headers: a dictionary(-like) object (sometimes email.message.Message or a
subclass thereof) containing *all* headers
The class is subclassable, mostly for the purpose of overriding
the make_file() method, which is called internally to come up with
a file open for reading and writing. This makes it possible to
override the default choice of storing all files in a temporary
directory and unlinking them as soon as they have been opened.
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headers : header dictionary-like object; default:
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environ : environment dictionary; default: os.environ
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limit : used internally to read parts of multipart/form-data forms,
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read
encoding, errors : the encoding and error handler used to decode the
binary stream to strings. Must be the same as the charset defined
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max_num_fields: int. If set, then __init__ throws a ValueError
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zFieldStorage.getvaluec C s4 || kr,| | }t |t�r$|d jS |jS n|S dS )z! Return the first value received.r Nr� r� r r r �getfirst s
zFieldStorage.getfirstc C s: || kr2| | }t |t�r(dd� |D �S |jgS ng S dS )z Return list of received values.c S s g | ]
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and immediately deletes (unlinks) it. The trick (on Unix!) is
that the file can still be used, but it can't be opened by
another process, and it will automatically be deleted when it
is closed or when the current process terminates.
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<LI>AUTH_TYPE
<LI>CONTENT_LENGTH
<LI>CONTENT_TYPE
<LI>DATE_GMT
<LI>DATE_LOCAL
<LI>DOCUMENT_NAME
<LI>DOCUMENT_ROOT
<LI>DOCUMENT_URI
<LI>GATEWAY_INTERFACE
<LI>LAST_MODIFIED
<LI>PATH
<LI>PATH_INFO
<LI>PATH_TRANSLATED
<LI>QUERY_STRING
<LI>REMOTE_ADDR
<LI>REMOTE_HOST
<LI>REMOTE_IDENT
<LI>REMOTE_USER
<LI>REQUEST_METHOD
<LI>SCRIPT_NAME
<LI>SERVER_NAME
<LI>SERVER_PORT
<LI>SERVER_PROTOCOL
<LI>SERVER_ROOT
<LI>SERVER_SOFTWARE
</UL>
In addition, HTTP headers sent by the server may be passed in the
environment as well. Here are some common variable names:
<UL>
<LI>HTTP_ACCEPT
<LI>HTTP_CONNECTION
<LI>HTTP_HOST
<LI>HTTP_PRAGMA
<LI>HTTP_REFERER
<LI>HTTP_USER_AGENT
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FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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By Greg Ward <gward@python.net>
Originally distributed as Optik.
For support, use the optik-users@lists.sourceforge.net mailing list
(http://lists.sourceforge.net/lists/listinfo/optik-users).
Simple usage example:
from optparse import OptionParser
parser = OptionParser()
parser.add_option("-f", "--file", dest="filename",
help="write report to FILE", metavar="FILE")
parser.add_option("-q", "--quiet",
action="store_false", dest="verbose", default=True,
help="don't print status messages to stdout")
(options, args) = parser.parse_args()
z1.5.3�Option� make_option�
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Copyright (c) 2001-2006 Gregory P. Ward. All rights reserved.
Copyright (c) 2002-2006 Python Software Foundation. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of the author nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Raised if an Option instance is created with invalid or
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Abstract base class for formatting option help. OptionParser
instances should use one of the HelpFormatter subclasses for
formatting help; by default IndentedHelpFormatter is used.
Instance attributes:
parser : OptionParser
the controlling OptionParser instance
indent_increment : int
the number of columns to indent per nesting level
max_help_position : int
the maximum starting column for option help text
help_position : int
the calculated starting column for option help text;
initially the same as the maximum
width : int
total number of columns for output (pass None to constructor for
this value to be taken from the $COLUMNS environment variable)
level : int
current indentation level
current_indent : int
current indentation level (in columns)
help_width : int
number of columns available for option help text (calculated)
default_tag : str
text to replace with each option's default value, "%default"
by default. Set to false value to disable default value expansion.
option_strings : { Option : str }
maps Option instances to the snippet of help text explaining
the syntax of that option, e.g. "-h, --help" or
"-fFILE, --file=FILE"
_short_opt_fmt : str
format string controlling how short options with values are
printed in help text. Must be either "%s%s" ("-fFILE") or
"%s %s" ("-f FILE"), because those are the two syntaxes that
Optik supports.
_long_opt_fmt : str
similar but for long options; must be either "%s %s" ("--file FILE")
or "%s=%s" ("--file=FILE").
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Instance attributes:
_short_opts : [string]
_long_opts : [string]
action : string
type : string
dest : string
default : any
nargs : int
const : any
choices : [string]
callback : function
callback_args : (any*)
callback_kwargs : { string : any }
help : string
metavar : string
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r� r| r� )r r r� r r r r� P s2 �� �� ��zOption._set_opt_stringsc C sv | j D ]F}||kr*t| ||| � ||= q|dkr@t| |t� qt| |d � q|rrt|�� �}tdd�|� | ��d S )Nr� z invalid keyword arguments: %sr4 )�ATTRS�setattrrr �sorted�keysr
r5 )r r� �attrr r r r� e s
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zOption._check_actionc C s� | j d kr0| j| jkr�| jd k r(d| _ q�d| _ n^t| j t �rF| j j| _ | j dkrVd| _ | j | jkrrtd| j | ��| j| jkr�td| j | ��d S )Nr� r� r) zinvalid option type: %rz$must not supply a type for action %r) r� r� �ALWAYS_TYPED_ACTIONSr� �
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STORE_ACTIONSr� rq r� rt r� )r r� r r r � _check_dest� s � zOption._check_destc C s* | j | jkr&| jd k r&td| j | ��d S )Nz*'const' must not be supplied for action %r)r� �
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�zOption._check_constc C s< | j | jkr | jd kr8d| _n| jd k r8td| j | ��d S )Nr z*'nargs' must not be supplied for action %r)r� r� r� r
r r r r � _check_nargs� s
�zOption._check_nargsc C s� | j dkrrt| j�s$td| j | ��| jd k rJt| jt�sJtd| j | ��| jd k r�t| jt�s�td| j | ��nB| jd k r�td| j | ��| jd k r�td| ��| jd k r�td| ��d S )Nr� zcallback not callable: %rz3callback_args, if supplied, must be a tuple: not %rz4callback_kwargs, if supplied, must be a dict: not %rz.callback supplied (%r) for non-callback optionz.callback_args supplied for non-callback optionz0callback_kwargs supplied for non-callback option) r� �callabler� r
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t | j�S r )r) �__dict__r r r r r& > s zValues.__str__c C s2 t |t�r| j|jkS t |t�r*| j|kS tS d S r )r� r r� r� �NotImplemented)r �otherr r r �__eq__C s
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Values.__eq__c C s6 t | �D ](}||kr|| }|dk rt| ||� qdS )z�
Update the option values from an arbitrary dictionary, but only
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in self. Any keys in dict without a corresponding attribute
are silently ignored.
N)�dirr� )r r� r� Zdvalr r r �_update_carefulK s
zValues._update_carefulc C s | j �|� dS )z�
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using all keys from the dictionary regardless of whether
they have a corresponding attribute in self or not.
N)r� �update)r r� r r r �
_update_looseX s zValues._update_loosec C s8 |dkr| � |� n |dkr(| �|� n td| ��d S )N�carefulZloosezinvalid update mode: %r)r� r� r? )r r� �moder r r �_update` s
zValues._updater� c C s& t |� tj| }| �t|�|� d S r )�
__import__�sys�modulesr� �vars)r �modnamer� �modr r r � read_moduleh s
zValues.read_modulec C s& i }t t|��� |� | �||� d S r )�exec�open�readr� )r �filenamer� r� r r r � read_filem s zValues.read_filec C s. t | |�rt| |�d kr$t| ||� t| |�S r )�hasattr�getattrr� )r r� r� r r r r� r s zValues.ensure_value)N)r� )r� )r r' r( r% r& r r� r� r� r� r� r� r� r� r r r r r 7 s
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Abstract base class.
Class attributes:
standard_option_list : [Option]
list of standard options that will be accepted by all instances
of this parser class (intended to be overridden by subclasses).
Instance attributes:
option_list : [Option]
the list of Option objects contained by this OptionContainer
_short_opt : { string : Option }
dictionary mapping short option strings, eg. "-f" or "-X",
to the Option instances that implement them. If an Option
has multiple short option strings, it will appear in this
dictionary multiple times. [1]
_long_opt : { string : Option }
dictionary mapping long option strings, eg. "--file" or
"--exclude", to the Option instances that implement them.
Again, a given Option can occur multiple times in this
dictionary. [1]
defaults : { string : any }
dictionary mapping option destination names to default
values for each destination [1]
[1] These mappings are common to (shared by) all components of the
controlling OptionParser, where they are initially created.
c C s& | � � || _| �|� | �|� d S r )�_create_option_list� option_class�set_conflict_handler�set_description)r r �conflict_handlerrj r r r r% � s
zOptionContainer.__init__c C s i | _ i | _i | _d S r ��
_short_opt� _long_optro r r r r �_create_option_mappings� s z'OptionContainer._create_option_mappingsc C s |j | _ |j| _|j| _d S r r rN r r r �_share_option_mappings� s z&OptionContainer._share_option_mappingsc C s |dkrt d| ��|| _d S )N)�error�resolvez$invalid conflict_resolution value %r)r? r )r �handlerr r r r � s z$OptionContainer.set_conflict_handlerc C s
|| _ d S r �rj ri r r r r � s z OptionContainer.set_descriptionc C s | j S r r r r r r �get_description� s z OptionContainer.get_descriptionc C s | ` | `| `dS �zsee OptionParser.destroy().Nr r r r r �destroy� s zOptionContainer.destroyc C s� g }|j D ]"}|| jkr
|�|| j| f� q
|jD ]"}|| jkr4|�|| j| f� q4|r�| j}|dkr�tdd�dd� |D �� |��nd|dkr�|D ]V\}}|�d�r�|j� |� | j|= n|j � |� | j|= |j s�|js�|j
j � |� q�d S )Nr z conflicting option string(s): %sr4 c S s g | ] }|d �qS )r r )rw �cor r r ry � s z3OptionContainer._check_conflict.<locals>.<listcomp>r r� ) r� r r| r� r r r r5 �
startswith�remove� containerr� )r r+ Z
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Zc_optionr r r �_check_conflict� s2
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z OptionContainer._check_conflictc O s� t |d t�r | j||�}n8t|�dkrL|sL|d }t |t�sTtd| ��ntd��| �|� | j�|� | |_ |j
D ]}|| j |< qv|j D ]}|| j
|< q�|jdk r�|jtk r�|j| j|j< n|j| jkr�d| j|j< |S )zOadd_option(Option)
add_option(opt_str, ..., kwarg=val, ...)
r r znot an Option instance: %r�invalid argumentsN)r� r) r r{ r r� r r� r| r r� r r� r rq r� rr ro )r r� r� r+ r� r r r �
add_option� s(
zOptionContainer.add_optionc C s |D ]}| � |� qd S r )r )r r� r+ r r r � add_options s zOptionContainer.add_optionsc C s | j �|�p| j�|�S r )r rp r r0 r r r �
get_option s
�zOptionContainer.get_optionc C s || j kp|| jkS r )r r r0 r r r �
has_option s
�zOptionContainer.has_optionc C sn | j �|�}|d kr | j�|�}|d kr4td| ��|jD ] }| j |= q:|jD ] }| j|= qN|jj�|� d S )Nzno such option %r) r rp r r? r� r� r r� r )r r/ r+ r� r r r �
remove_option s
z OptionContainer.remove_optionc C s> | j s
dS g }| j D ] }|jtk r|�|�|�� qd�|�S �NrP )r� rn r r| r� r5 )r � formatterr~ r+ r r r �format_option_help s
z"OptionContainer.format_option_helpc C s |� | �� �S r )rk r �r r r r r rk ( s z"OptionContainer.format_descriptionc C s: g }| j r|�| �|�� | jr0|�| �|�� d�|�S )Nrg )rj r| rk r� r r5 �r r r~ r r r � format_help+ s zOptionContainer.format_helpN)r r' r( r- r% r r
r r r r r r r r r r r rk r" r r r r r x s" c @ s6 e Zd Zd dd�Zdd� Zdd� Zdd � Zd
d � ZdS )
r Nc C s$ || _ t�| |j|j|� || _d S r )r9 r r% r r �title)r r9 r# rj r r r r% 6 s �zOptionGroup.__init__c C s g | _ | �| j� d S r )r� r
r9 r r r r r < s z OptionGroup._create_option_listc C s
|| _ d S r )r# )r r# r r r � set_title@ s zOptionGroup.set_titlec C s t �| � | `dS r )r r r� r r r r r C s
zOptionGroup.destroyc C s0 |� | j�}|�� |t�| |�7 }|�� |S r )ra r# rX r r" rY r! r r r r" J s
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Class attributes:
standard_option_list : [Option]
list of standard options that will be accepted by all instances
of this parser class (intended to be overridden by subclasses).
Instance attributes:
usage : string
a usage string for your program. Before it is displayed
to the user, "%prog" will be expanded to the name of
your program (self.prog or os.path.basename(sys.argv[0])).
prog : string
the name of the current program (to override
os.path.basename(sys.argv[0])).
description : string
A paragraph of text giving a brief overview of your program.
optparse reformats this paragraph to fit the current terminal
width and prints it when the user requests help (after usage,
but before the list of options).
epilog : string
paragraph of help text to print after option help
option_groups : [OptionGroup]
list of option groups in this parser (option groups are
irrelevant for parsing the command-line, but very useful
for generating help)
allow_interspersed_args : bool = true
if true, positional arguments may be interspersed with options.
Assuming -a and -b each take a single argument, the command-line
-ablah foo bar -bboo baz
will be interpreted the same as
-ablah -bboo -- foo bar baz
If this flag were false, that command line would be interpreted as
-ablah -- foo bar -bboo baz
-- ie. we stop processing options as soon as we see the first
non-option argument. (This is the tradition followed by
Python's getopt module, Perl's Getopt::Std, and other argument-
parsing libraries, but it is generally annoying to users.)
process_default_values : bool = true
if true, option default values are processed similarly to option
values from the command line: that is, they are passed to the
type-checking function for the option's type (as long as the
default value is a string). (This really only matters if you
have defined custom types; see SF bug #955889.) Set it to false
to restore the behaviour of Optik 1.4.1 and earlier.
rargs : [string]
the argument list currently being parsed. Only set when
parse_args() is active, and continually trimmed down as
we consume arguments. Mainly there for the benefit of
callback options.
largs : [string]
the list of leftover arguments that we have skipped while
parsing options. If allow_interspersed_args is false, this
list is always empty.
values : Values
the set of option values currently being accumulated. Only
set when parse_args() is active. Also mainly for callbacks.
Because of the 'rargs', 'largs', and 'values' attributes,
OptionParser is not thread-safe. If, for some perverse reason, you
need to parse command-line arguments simultaneously in different
threads, use different OptionParser instances.
Nr Tc C sr t �| |||� | �|� | | _|| _d| _d| _|d kr@t� }|| _| j� | � |
| _
| j ||d� | � � d S )NT)�add_help)
r r% � set_usage�progr� �allow_interspersed_args�process_default_valuesr
r rO rl �_populate_option_list�_init_parsing_state) r r^ r� r r� r rj r Zadd_help_optionr' rl r r r r% � s( �
�zOptionParser.__init__c C s. t �| � | jD ] }|�� q| `| `| `dS )a
Declare that you are done with this OptionParser. This cleans up
reference cycles so the OptionParser (and all objects referenced by
it) can be garbage-collected promptly. After calling destroy(), the
OptionParser is unusable.
N)r r r� r� r )r r� r r r r � s
zOptionParser.destroyc C s g | _ g | _| �� d S r )r� r� r r r r r r � s z OptionParser._create_option_listc C s | j dddtd�d� d S )Nz-hz--helprn z show this help message and exit�r� rn �r r1 r r r r �_add_help_option� s �z OptionParser._add_help_optionc C s | j ddtd�d� d S )Nz --versionr� z&show program's version number and exitr, r- r r r r �_add_version_option� s �z OptionParser._add_version_optionc C s> | j r| �| j � |r | �|� | jr.| �� |r:| �� d S r )�standard_option_listr r� r/ r. )r r� r% r r r r* � s
z"OptionParser._populate_option_listc C s d | _ d | _d | _d S r )�rargs�largsr� r r r r r+ � s z OptionParser._init_parsing_statec C sL |d krt d�| _n4|tkr$d | _n$|�� �d�rB|dd � | _n|| _d S )Nz%prog [options]zusage: � )r1 r^ r r� r r] r r r r& � s zOptionParser.set_usagec C s
d| _ dS )a Set parsing to not stop on the first non-option, allowing
interspersing switches with command arguments. This is the
default behavior. See also disable_interspersed_args() and the
class documentation description of the attribute
allow_interspersed_args.TN�r( r r r r �enable_interspersed_args� s z%OptionParser.enable_interspersed_argsc C s
d| _ dS )z�Set parsing to stop on the first non-option. Use this if
you have a command processor which runs another command that
has options of its own and you want to make sure these options
don't get confused.
FNr4 r r r r �disable_interspersed_args s z&OptionParser.disable_interspersed_argsc C s
|| _ d S r )r) )r r� r r r �set_process_default_values s z'OptionParser.set_process_default_valuesc C s || j |< d S r )ro )r rq r� r r r � set_default s zOptionParser.set_defaultc K s | j �|� d S r )ro r� )r r� r r r � set_defaults s zOptionParser.set_defaultsc C s* | j d d � }| jD ]}|�|j � q|S r )r� r� r} )r Zoptionsr� r r r �_get_all_options s
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mode can be "r" for reading (default), "w" for (over)writing,
"x" for creating exclusively, or "a" for appending. These can
equivalently be given as "rb", "wb", "xb" and "ab" respectively.
format specifies the container format to use for the file.
If mode is "r", this defaults to FORMAT_AUTO. Otherwise, the
default is FORMAT_XZ.
check specifies the integrity check to use. This argument can
only be used when opening a file for writing. For FORMAT_XZ,
the default is CHECK_CRC64. FORMAT_ALONE and FORMAT_RAW do not
support integrity checks - for these formats, check must be
omitted, or be CHECK_NONE.
When opening a file for reading, the *preset* argument is not
meaningful, and should be omitted. The *filters* argument should
also be omitted, except when format is FORMAT_RAW (in which case
it is required).
When opening a file for writing, the settings used by the
compressor can be specified either as a preset compression
level (with the *preset* argument), or in detail as a custom
filter chain (with the *filters* argument). For FORMAT_XZ and
FORMAT_ALONE, the default is to use the PRESET_DEFAULT preset
level. For FORMAT_RAW, the caller must always specify a filter
chain; the raw compressor does not support preset compression
levels.
preset (if provided) should be an integer in the range 0-9,
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Raises:
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[IPv4Network('192.0.2.0/25'), IPv4Network('192.0.2.128/31'),
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Args:
first: the first IPv4Address or IPv6Address in the range.
last: the last IPv4Address or IPv6Address in the range.
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ip2 = IPv4Network('192.0.2.64/26')
ip3 = IPv4Network('192.0.2.128/26')
ip4 = IPv4Network('192.0.2.192/26')
_collapse_addresses_internal([ip1, ip2, ip3, ip4]) ->
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'1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa'
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N)�_ip_int_from_stringr ro rn r r> )ri �ip_strrm r
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z%_IPAddressBase._prefix_from_ip_stringc C sH t |ttf�r|| jfS t |t�s*t|�}t|�dkr:|S |d | jfS )z�Helper function to parse address of Network/Interface.
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c C s d| j jt| �f S r� r� r[ r
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r) N�rr rO rH �range�_address_class�r\ �network� broadcast�xr
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z_BaseNetwork.__iter__c C sl t | j�}t | j�}|dkr>|| |kr0td��| �|| �S |d7 }|| |k rZtd��| �|| �S d S )Nr zaddress out of ranger) )rr rO rH �
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�z_BaseNetwork.overlapsc C s | � t| j�t| j�B �S rz )r� rr rO �hostmaskr[ r
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with_hostmask� s z_BaseNetwork.with_hostmaskc C s t | j�t | j� d S )z&Number of hosts in the current subnet.r) )rr rH rO r[ r
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num_addresses� s z_BaseNetwork.num_addressesc C s dt | �f }t|��d S )Nz%%200s has no associated address classrb re r
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r rj � s z_BaseNetwork.prefixlenc c s | j |j ks td| |f ��t|t�s2td| ��|�| �sLtd|| f ��|| krXdS |�d|j|jf �}| � � \}}||kr�||kr�|�|�r�|V |� � \}}qz|�|�r�|V |� � \}}qzt
d|||f ��qz||kr�|V n"||kr�|V nt
d|||f ��dS )a� Remove an address from a larger block.
For example:
addr1 = ip_network('192.0.2.0/28')
addr2 = ip_network('192.0.2.1/32')
list(addr1.address_exclude(addr2)) =
[IPv4Network('192.0.2.0/32'), IPv4Network('192.0.2.2/31'),
IPv4Network('192.0.2.4/30'), IPv4Network('192.0.2.8/29')]
or IPv6:
addr1 = ip_network('2001:db8::1/32')
addr2 = ip_network('2001:db8::1/128')
list(addr1.address_exclude(addr2)) =
[ip_network('2001:db8::1/128'),
ip_network('2001:db8::2/127'),
ip_network('2001:db8::4/126'),
ip_network('2001:db8::8/125'),
...
ip_network('2001:db8:8000::/33')]
Args:
other: An IPv4Network or IPv6Network object of the same type.
Returns:
An iterator of the IPv(4|6)Network objects which is self
minus other.
Raises:
TypeError: If self and other are of differing address
versions, or if other is not a network object.
ValueError: If other is not completely contained by self.
r7 z%s is not a network objectz%s not contained in %sNr� z3Error performing exclusion: s1: %s s2: %s other: %s) rL r; r9 rS � subnet_ofr r{ rO rj rI �AssertionError)r\ r� �s1�s2r
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��z _BaseNetwork.address_excludec C s` | j |j kr td| |f ��| j|jk r,dS | j|jkr<dS | j|jk rLdS | j|jkr\dS dS )a� Compare two IP objects.
This is only concerned about the comparison of the integer
representation of the network addresses. This means that the
host bits aren't considered at all in this method. If you want
to compare host bits, you can easily enough do a
'HostA._ip < HostB._ip'
Args:
other: An IP object.
Returns:
If the IP versions of self and other are the same, returns:
-1 if self < other:
eg: IPv4Network('192.0.2.0/25') < IPv4Network('192.0.2.128/25')
IPv6Network('2001:db8::1000/124') <
IPv6Network('2001:db8::2000/124')
0 if self == other
eg: IPv4Network('192.0.2.0/24') == IPv4Network('192.0.2.0/24')
IPv6Network('2001:db8::1000/124') ==
IPv6Network('2001:db8::1000/124')
1 if self > other
eg: IPv4Network('192.0.2.128/25') > IPv4Network('192.0.2.0/25')
IPv6Network('2001:db8::2000/124') >
IPv6Network('2001:db8::1000/124')
Raises:
TypeError if the IP versions are different.
z"%s and %s are not of the same typerK r) r )rL r; rO r� r� r
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r �compare_networks6 s ! � z _BaseNetwork.compare_networksc C s | j | j| jfS )z�Network-only key function.
Returns an object that identifies this address' network and
netmask. This function is a suitable "key" argument for sorted()
and list.sort().
)rL rO r� r[ r
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r rT f s z _BaseNetwork._get_networks_keyr) Nc c s� | j | jkr| V dS |dk rJ|| j k r0td��|dkr@td��|| j }|dk rZtd��| j | }|| jkr~td|| f ��t| j�}t| j�d }t| j�d |? }t|||�D ]}| �||f�}|V q�dS )a� The subnets which join to make the current subnet.
In the case that self contains only one IP
(self._prefixlen == 32 for IPv4 or self._prefixlen == 128
for IPv6), yield an iterator with just ourself.
Args:
prefixlen_diff: An integer, the amount the prefix length
should be increased by. This should not be set if
new_prefix is also set.
new_prefix: The desired new prefix length. This must be a
larger number (smaller prefix) than the existing prefix.
This should not be set if prefixlen_diff is also set.
Returns:
An iterator of IPv(4|6) objects.
Raises:
ValueError: The prefixlen_diff is too small or too large.
OR
prefixlen_diff and new_prefix are both set or new_prefix
is a smaller number than the current prefix (smaller
number means a larger network)
Nznew prefix must be longerr) �(cannot set prefixlen_diff and new_prefixr z prefix length diff must be > 0z0prefix length diff %d is invalid for netblock %s) rM r= r rr rO rH r� r� r{ ) r\ �prefixlen_diff�
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z_BaseNetwork.subnetsc C s� | j dkr| S |dk rB|| j kr(td��|dkr8td��| j | }| j| }|dk rftd| j|f ��| �t| j�t| j�|> @ |f�S )a� The supernet containing the current network.
Args:
prefixlen_diff: An integer, the amount the prefix length of
the network should be decreased by. For example, given a
/24 network and a prefixlen_diff of 3, a supernet with a
/21 netmask is returned.
Returns:
An IPv4 network object.
Raises:
ValueError: If self.prefixlen - prefixlen_diff < 0. I.e., you have
a negative prefix length.
OR
If prefixlen_diff and new_prefix are both set or new_prefix is a
larger number than the current prefix (larger number means a
smaller network)
r Nznew prefix must be shorterr) r� z;current prefixlen is %d, cannot have a prefixlen_diff of %d)rM r rj r{ rr rO r� )r\ r� r� r� r
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���z_BaseNetwork.supernetc C s | j jo| jjS �z�Test if the address is reserved for multicast use.
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See RFC 2373 2.7 for details.
)rO � is_multicastrH r[ r
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)rO � is_reservedrH r[ r
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)rO �
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r r� � s �z_BaseNetwork.is_link_localc C s | j jo| jjS )z�Test if this address is allocated for private networks.
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)rO �
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r r� s �z_BaseNetwork.is_privatec C s | j S )z�Test if this address is allocated for public networks.
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Returns:
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RFC 2373 2.5.2.
)rO �is_unspecifiedrH r[ r
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r r� s �z_BaseNetwork.is_unspecifiedc C s | j jo| jjS )��Test if the address is a loopback address.
Returns:
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RFC 2373 2.5.3.
)rO � is_loopbackrH r[ r
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r r� ( s �z_BaseNetwork.is_loopback)r) N)r) N))r r r r r� r� r� r� r� r� r� r� r� r� � functools�cached_propertyrH r� r~ r� r� r� r� r� rj r� r� rT rI rC r� � staticmethodr� r� r� r� r� r� r� r� r� r
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rh | �|�}Y nX t| � |��}||f| j |< | j | S �a Make a (netmask, prefix_len) tuple from the given argument.
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r )
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rx } zt d||f �d�W 5 d}~X Y nX dS )a Turn the given IP string into an integer for comparison.
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�Address cannot be empty�.r zExpected 4 octets in %rr �%s in %rN)r r% r& rr �
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zEmpty octet not permittedz#Only decimal digits permitted in %r� z$At most 3 characters permitted in %r�0r z%Leading zeros are not permitted in %r�
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r r� � s z_BaseV4._string_from_ip_intc C s& t | ��d�ddd� }d�|�d S )z�Return the reverse DNS pointer name for the IPv4 address.
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r� NrK z
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Args:
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Additionally, an integer can be passed, so
IPv4Address('192.0.2.1') == IPv4Address(3221225985).
or, more generally
IPv4Address(int(IPv4Address('192.0.2.1'))) ==
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Raises:
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Nr r r" �Unexpected '/' in %r�
r9 rr rg r, rw rh r� r$ r rt �r\ r Zaddr_strr
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r r� s zIPv4Address.is_globalc C s | | j jkS )z�Test if the address is reserved for multicast use.
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�r� �_multicast_networkr[ r
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r r� s zIPv4Address.is_multicastc C s | | j jkS )z�Test if the address is unspecified.
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)r� �_unspecified_addressr[ r
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r r� s zIPv4Address.is_unspecifiedc C s | | j jkS )z�Test if the address is a loopback address.
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)r� �_loopback_networkr[ r
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r r� " s zIPv4Address.is_loopbackc C s | | j jkS )z�Test if the address is reserved for link-local.
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r r1 f s zIPv4Interface.ipc C s d| � | j�| jf S r� r r[ r
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dS ) r ae This class represents and manipulates 32-bit IPv4 network + addresses..
Attributes: [examples for IPv4Network('192.0.2.0/27')]
.network_address: IPv4Address('192.0.2.0')
.hostmask: IPv4Address('0.0.0.31')
.broadcast_address: IPv4Address('192.0.2.32')
.netmask: IPv4Address('255.255.255.224')
.prefixlen: 27
Tc s� | � |�\� }t� �| _| �|�\| _| _t| j�}|t| j�@ |krl|rXtd| ��nt|t| j�@ �| _| j| jd kr�| j | _
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dS )a Instantiate a new IPv4 network object.
Args:
address: A string or integer representing the IP [& network].
'192.0.2.0/24'
'192.0.2.0/255.255.255.0'
'192.0.2.0/0.0.0.255'
are all functionally the same in IPv4. Similarly,
'192.0.2.1'
'192.0.2.1/255.255.255.255'
'192.0.2.1/32'
are also functionally equivalent. That is to say, failing to
provide a subnetmask will create an object with a mask of /32.
If the mask (portion after the / in the argument) is given in
dotted quad form, it is treated as a netmask if it starts with a
non-zero field (e.g. /255.0.0.0 == /8) and as a hostmask if it
starts with a zero field (e.g. 0.255.255.255 == /8), with the
single exception of an all-zero mask which is treated as a
netmask == /0. If no mask is given, a default of /32 is used.
Additionally, an integer can be passed, so
IPv4Network('192.0.2.1') == IPv4Network(3221225985)
or, more generally
IPv4Interface(int(IPv4Interface('192.0.2.1'))) ==
IPv4Interface('192.0.2.1')
Raises:
AddressValueError: If ipaddress isn't a valid IPv4 address.
NetmaskValueError: If the netmask isn't valid for
an IPv4 address.
ValueError: If strict is True and a network address is not
supplied.
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198.18.0.0/15z198.51.100.0/24z203.0.113.0/24z 240.0.0.0/4z255.255.255.255/32z0.0.0.0N) r r r r r� r� r� r� r� r� r
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or, more generally
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Raises:
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Attributes: [examples for IPv6('2001:db8::1000/124')]
.network_address: IPv6Address('2001:db8::1000')
.hostmask: IPv6Address('::f')
.broadcast_address: IPv6Address('2001:db8::100f')
.netmask: IPv6Address('ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff0')
.prefixlen: 124
Tc s� | � |�\� }t� �| _| �|�\| _| _t| j�}|t| j�@ |krl|rXtd| ��nt|t| j�@ �| _| j| jd kr�| j | _
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'2001:db8::'
are all functionally the same in IPv6. That is to say,
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strict: A boolean. If true, ensure that we have been passed
A true network address, eg, 2001:db8::1000/124 and not an
IP address on a network, eg, 2001:db8::1/124.
Raises:
AddressValueError: If address isn't a valid IPv6 address.
NetmaskValueError: If the netmask isn't valid for
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ValueError: If strict was True and a network address was not
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abs_srcdirZ datarootdir� exec_prefix�prefixZsrcdirN)Zbuild_time_vars� r r �?/usr/lib64/python3.8/_sysconfigdata_d_linux_x86_64-linux-gnu.py�<module> sb 2+-� � � � � � � � uuid.cpython-38.opt-1.pyc 0000644 00000056035 15145007335 0011115 0 ustar 00 U
&�.e3w � @ s d Z ddlZddlZddlmZ dZejdkr8d ZZn ddlZe� � Z
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d� de�ZG dd� d�Zdd� Zdd� Zdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z d!d"� Z d#d$� Z d a a da!z ddl"Z"W n e#k
�r dZ"Y nX d%d&� Z$d'd(� Z%d)d*� Z&d+d,� Z'e�rFeegZ(nJejd-k�r^eee gZ(n2ejd.k�rte e gZ(n e�r�e gZ(neeee egZ(ej)d/k�r�e%ge( Z*n ej)d0k�r�e&ge( Z*ne(Z*da+dd1�d2d3�Z,da-d@d4d5�Z.d6d7� Z/d8d9� Z0d:d;� Z1ed<�Z2ed=�Z3ed>�Z4ed?�Z5dS )AaQ UUID objects (universally unique identifiers) according to RFC 4122.
This module provides immutable UUID objects (class UUID) and the functions
uuid1(), uuid3(), uuid4(), uuid5() for generating version 1, 3, 4, and 5
UUIDs as specified in RFC 4122.
If all you want is a unique ID, you should probably call uuid1() or uuid4().
Note that uuid1() may compromise privacy since it creates a UUID containing
the computer's network address. uuid4() creates a random UUID.
Typical usage:
>>> import uuid
# make a UUID based on the host ID and current time
>>> uuid.uuid1() # doctest: +SKIP
UUID('a8098c1a-f86e-11da-bd1a-00112444be1e')
# make a UUID using an MD5 hash of a namespace UUID and a name
>>> uuid.uuid3(uuid.NAMESPACE_DNS, 'python.org')
UUID('6fa459ea-ee8a-3ca4-894e-db77e160355e')
# make a random UUID
>>> uuid.uuid4() # doctest: +SKIP
UUID('16fd2706-8baf-433b-82eb-8c7fada847da')
# make a UUID using a SHA-1 hash of a namespace UUID and a name
>>> uuid.uuid5(uuid.NAMESPACE_DNS, 'python.org')
UUID('886313e1-3b8a-5372-9b90-0c9aee199e5d')
# make a UUID from a string of hex digits (braces and hyphens ignored)
>>> x = uuid.UUID('{00010203-0405-0607-0809-0a0b0c0d0e0f}')
# convert a UUID to a string of hex digits in standard form
>>> str(x)
'00010203-0405-0607-0809-0a0b0c0d0e0f'
# get the raw 16 bytes of the UUID
>>> x.bytes
b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f'
# make a UUID from a 16-byte string
>>> uuid.UUID(bytes=x.bytes)
UUID('00010203-0405-0607-0809-0a0b0c0d0e0f')
� N)�EnumzKa-Ping Yee <ping@zesty.ca>)�win32�darwinFZAIXZLinuxz reserved for NCS compatibilityzspecified in RFC 4122z$reserved for Microsoft compatibilityz reserved for future definitionc @ s e Zd ZdZdZdZdS )�SafeUUIDr ���N)�__name__�
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dd� Zdd� Zdd� Zdd� Zdd � Zd d � Zed d � �Zed!d"� �Zed#d$� �Zed%d&� �Zed'd(� �Zed)d*� �Zed+d,� �Zed-d.� �Z ed/d0� �Z ed1d2� �Z ed3d4� �Z ed5d6� �Z ed7d8� �Z!ed9d:� �Z"ed;d<� �Z#dS )>�UUIDa� Instances of the UUID class represent UUIDs as specified in RFC 4122.
UUID objects are immutable, hashable, and usable as dictionary keys.
Converting a UUID to a string with str() yields something in the form
'12345678-1234-1234-1234-123456789abc'. The UUID constructor accepts
five possible forms: a similar string of hexadecimal digits, or a tuple
of six integer fields (with 32-bit, 16-bit, 16-bit, 8-bit, 8-bit, and
48-bit values respectively) as an argument named 'fields', or a string
of 16 bytes (with all the integer fields in big-endian order) as an
argument named 'bytes', or a string of 16 bytes (with the first three
fields in little-endian order) as an argument named 'bytes_le', or a
single 128-bit integer as an argument named 'int'.
UUIDs have these read-only attributes:
bytes the UUID as a 16-byte string (containing the six
integer fields in big-endian byte order)
bytes_le the UUID as a 16-byte string (with time_low, time_mid,
and time_hi_version in little-endian byte order)
fields a tuple of the six integer fields of the UUID,
which are also available as six individual attributes
and two derived attributes:
time_low the first 32 bits of the UUID
time_mid the next 16 bits of the UUID
time_hi_version the next 16 bits of the UUID
clock_seq_hi_variant the next 8 bits of the UUID
clock_seq_low the next 8 bits of the UUID
node the last 48 bits of the UUID
time the 60-bit timestamp
clock_seq the 14-bit sequence number
hex the UUID as a 32-character hexadecimal string
int the UUID as a 128-bit integer
urn the UUID as a URN as specified in RFC 4122
variant the UUID variant (one of the constants RESERVED_NCS,
RFC_4122, RESERVED_MICROSOFT, or RESERVED_FUTURE)
version the UUID version number (1 through 5, meaningful only
when the variant is RFC_4122)
is_safe An enum indicating whether the UUID has been generated in
a way that is safe for multiprocessing applications, via
uuid_generate_time_safe(3).
)�int�is_safe� __weakref__N)r c C s� |||||g� d�dkr td��|dk rl|�dd��dd�}|�d��dd�}t|�d krbtd
��t|d �}|dk r�t|�d kr�td ��|d
dd� |dd
d� |ddd� |dd� }|dk r�t|�d kr�td��tj|dd�}|dk �rt|�dk�rtd��|\}} }
} } }
d| k�r0dk �s:n td��d| k�rRdk �s\n td��d|
k�rtdk �s~n td ��d| k�r�d k �s�n td ��d| k�r�d k �s�n td ��d|
k�r�d k �s�n td!��| d> | B }|d"> | d#> B |
d$> B |d%> B |
B }|dk �rDd| k�r:d&d'> k �sDn td(��|dk �r�d&| k�rfdk�spn td)��|d*M }|d+O }|d,M }||d-> O }t� | d.|� t� | d/|� dS )0aL Create a UUID from either a string of 32 hexadecimal digits,
a string of 16 bytes as the 'bytes' argument, a string of 16 bytes
in little-endian order as the 'bytes_le' argument, a tuple of six
integers (32-bit time_low, 16-bit time_mid, 16-bit time_hi_version,
8-bit clock_seq_hi_variant, 8-bit clock_seq_low, 48-bit node) as
the 'fields' argument, or a single 128-bit integer as the 'int'
argument. When a string of hex digits is given, curly braces,
hyphens, and a URN prefix are all optional. For example, these
expressions all yield the same UUID:
UUID('{12345678-1234-5678-1234-567812345678}')
UUID('12345678123456781234567812345678')
UUID('urn:uuid:12345678-1234-5678-1234-567812345678')
UUID(bytes='\x12\x34\x56\x78'*4)
UUID(bytes_le='\x78\x56\x34\x12\x34\x12\x78\x56' +
'\x12\x34\x56\x78\x12\x34\x56\x78')
UUID(fields=(0x12345678, 0x1234, 0x5678, 0x12, 0x34, 0x567812345678))
UUID(int=0x12345678123456781234567812345678)
Exactly one of 'hex', 'bytes', 'bytes_le', 'fields', or 'int' must
be given. The 'version' argument is optional; if given, the resulting
UUID will have its variant and version set according to RFC 4122,
overriding the given 'hex', 'bytes', 'bytes_le', 'fields', or 'int'.
is_safe is an enum exposed as an attribute on the instance. It
indicates whether the UUID has been generated in a way that is safe
for multiprocessing applications, via uuid_generate_time_safe(3).
N� zGone of the hex, bytes, bytes_le, fields, or int arguments must be givenzurn:� zuuid:z{}�-� z$badly formed hexadecimal UUID string� z bytes_le is not a 16-char string� r � � � z bytes is not a 16-char string�big)� byteorder� zfields is not a 6-tupler l z*field 1 out of range (need a 32-bit value)i z*field 2 out of range (need a 16-bit value)z*field 3 out of range (need a 16-bit value)� z*field 4 out of range (need an 8-bit value)z*field 5 out of range (need an 8-bit value)� z*field 6 out of range (need a 48-bit value)�` �P �@ �0 � � z*int is out of range (need a 128-bit value)zillegal version numberl���� � l���� �L r r )
�count� TypeError�replace�strip�len�
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�
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zUUID.__getstate__c C s: t �| d|d � t �| dd|kr.t|d �ntj� d S r? )r/ r0 r r
)r1 �stater r r � __setstate__� s ��zUUID.__setstate__c C s t |t�r| j|jkS tS �N��
isinstancer
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z UUID.__lt__c C s t |t�r| j|jkS tS rE rF rI r r r �__gt__� s
z UUID.__gt__c C s t |t�r| j|jkS tS rE rF rI r r r �__le__� s
z UUID.__le__c C s t |t�r| j|jkS tS rE rF rI r r r �__ge__ s
z UUID.__ge__c C s
t | j�S rE )�hashr �r1 r r r �__hash__ s z
UUID.__hash__c C s | j S rE �r rQ r r r �__int__ s z UUID.__int__c C s d| j jt| �f S )Nz%s(%r))� __class__r �strrQ r r r �__repr__ s z
UUID.__repr__c C s t d��d S )NzUUID objects are immutable)r( )r1 �namer@ r r r r0 s zUUID.__setattr__c C sD d| j }d|d d� |dd� |dd� |dd� |dd � f S )N�%032xz%s-%s-%s-%s-%sr � r � rS )r1 r2 r r r �__str__ s
�z UUID.__str__c C s | j �dd�S )Nr r )r �to_bytesrQ r r r r3 s z
UUID.bytesc C s< | j }|dd d� |ddd� |ddd� |dd � S )Nr r r r r �r3 )r1 r3 r r r r4 s (
�z
UUID.bytes_lec C s | j | j| j| j| j| jfS rE )r7 r8 r9 r: r; r< rQ r r r r5 s
�z UUID.fieldsc C s
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Basic statistics module.
This module provides functions for calculating statistics of data, including
averages, variance, and standard deviation.
Calculating averages
--------------------
================== ==================================================
Function Description
================== ==================================================
mean Arithmetic mean (average) of data.
fmean Fast, floating point arithmetic mean.
geometric_mean Geometric mean of data.
harmonic_mean Harmonic mean of data.
median Median (middle value) of data.
median_low Low median of data.
median_high High median of data.
median_grouped Median, or 50th percentile, of grouped data.
mode Mode (most common value) of data.
multimode List of modes (most common values of data).
quantiles Divide data into intervals with equal probability.
================== ==================================================
Calculate the arithmetic mean ("the average") of data:
>>> mean([-1.0, 2.5, 3.25, 5.75])
2.625
Calculate the standard median of discrete data:
>>> median([2, 3, 4, 5])
3.5
Calculate the median, or 50th percentile, of data grouped into class intervals
centred on the data values provided. E.g. if your data points are rounded to
the nearest whole number:
>>> median_grouped([2, 2, 3, 3, 3, 4]) #doctest: +ELLIPSIS
2.8333333333...
This should be interpreted in this way: you have two data points in the class
interval 1.5-2.5, three data points in the class interval 2.5-3.5, and one in
the class interval 3.5-4.5. The median of these data points is 2.8333...
Calculating variability or spread
---------------------------------
================== =============================================
Function Description
================== =============================================
pvariance Population variance of data.
variance Sample variance of data.
pstdev Population standard deviation of data.
stdev Sample standard deviation of data.
================== =============================================
Calculate the standard deviation of sample data:
>>> stdev([2.5, 3.25, 5.5, 11.25, 11.75]) #doctest: +ELLIPSIS
4.38961843444...
If you have previously calculated the mean, you can pass it as the optional
second argument to the four "spread" functions to avoid recalculating it:
>>> data = [1, 2, 2, 4, 4, 4, 5, 6]
>>> mu = mean(data)
>>> pvariance(data, mu)
2.5
Exceptions
----------
A single exception is defined: StatisticsError is a subclass of ValueError.
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If ``data`` is empty, ``start`` (defaulting to 0) is returned.
Examples
--------
>>> _sum([3, 2.25, 4.5, -0.5, 1.0], 0.75)
(<class 'float'>, Fraction(11, 1), 5)
Some sources of round-off error will be avoided:
# Built-in sum returns zero.
>>> _sum([1e50, 1, -1e50] * 1000)
(<class 'float'>, Fraction(1000, 1), 3000)
Fractions and Decimals are also supported:
>>> from fractions import Fraction as F
>>> _sum([F(2, 3), F(7, 5), F(1, 4), F(5, 6)])
(<class 'fractions.Fraction'>, Fraction(63, 20), 4)
>>> from decimal import Decimal as D
>>> data = [D("0.1375"), D("0.2108"), D("0.3061"), D("0.0419")]
>>> _sum(data)
(<class 'decimal.Decimal'>, Fraction(6963, 10000), 4)
Mixed types are currently treated as an error, except that int is
allowed.
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_find_rteq s rW �negative valuec c s$ | D ]}|dk rt |��|V qdS )z7Iterate over values, failing if any are less than zero.r N)r )r< �errmsgrA r& r& r' � _fail_neg s rZ c C sH t | �| krt| �} t| �}|dk r,td��t| �\}}}t|| |�S )a� Return the sample arithmetic mean of data.
>>> mean([1, 2, 3, 4, 4])
2.8
>>> from fractions import Fraction as F
>>> mean([F(3, 7), F(1, 21), F(5, 3), F(1, 3)])
Fraction(13, 21)
>>> from decimal import Decimal as D
>>> mean([D("0.5"), D("0.75"), D("0.625"), D("0.375")])
Decimal('0.5625')
If ``data`` is empty, StatisticsError will be raised.
r( z%mean requires at least one data point)�iter�listrQ r r> rP )r7 r, r: r= r9 r& r& r' r ' s c st z t | �� W n0 tk
r< d� � fdd�}t|| ��}Y n
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rn td�d�Y nX dS )z�Convert data to floats and compute the arithmetic mean.
This runs faster than the mean() function and it always returns a float.
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>>> fmean([3.5, 4.0, 5.25])
4.25
r c 3 s t | dd�D ]\� }|V q d S )Nr( )r8 )� enumerate)�iterablerA �r, r& r' r9 O s zfmean.<locals>.countz&fmean requires at least one data pointN)rQ rF r �ZeroDivisionErrorr )r7 r9 r= r& r_ r' r A s
c C s8 zt ttt| ���W S tk
r2 td�d�Y nX dS )aY Convert data to floats and compute the geometric mean.
Raises a StatisticsError if the input dataset is empty,
if it contains a zero, or if it contains a negative value.
No special efforts are made to achieve exact results.
(However, this may change in the future.)
>>> round(geometric_mean([54, 24, 36]), 9)
36.0
zHgeometric mean requires a non-empty dataset containing positive numbersN)r r r3 r rM r )r7 r& r& r' r \ s �c C s� t | �| krt| �} d}t| �}|dk r2td��n<|dkrn| d }t|tjtf�rf|dk rbt|��|S td��z"t dd� t
| |�D ��\}}}W n t k
r� Y dS X t || |�S )a Return the harmonic mean of data.
The harmonic mean, sometimes called the subcontrary mean, is the
reciprocal of the arithmetic mean of the reciprocals of the data,
and is often appropriate when averaging quantities which are rates
or ratios, for example speeds. Example:
Suppose an investor purchases an equal value of shares in each of
three companies, with P/E (price/earning) ratios of 2.5, 3 and 10.
What is the average P/E ratio for the investor's portfolio?
>>> harmonic_mean([2.5, 3, 10]) # For an equal investment portfolio.
3.6
Using the arithmetic mean would give an average of about 5.167, which
is too high.
If ``data`` is empty, or any element is less than zero,
``harmonic_mean`` will raise ``StatisticsError``.
z.harmonic mean does not support negative valuesr( z.harmonic_mean requires at least one data pointr zunsupported typec s s | ]}d | V qdS )r( Nr& �r* rA r& r& r' r- � s z harmonic_mean.<locals>.<genexpr>)
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isinstance�numbersZRealr rF r> rZ r` rP )r7 rY r, rA r: r= r9 r& r& r' r o s$
"c C s\ t | �} t| �}|dkr td��|d dkr8| |d S |d }| |d | | d S dS )aB Return the median (middle value) of numeric data.
When the number of data points is odd, return the middle data point.
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taking the average of the two middle values:
>>> median([1, 3, 5])
3
>>> median([1, 3, 5, 7])
4.0
r �no median for empty data� r( N�r5 rQ r )r7 r, rS r& r& r' r � s
c C sL t | �} t| �}|dkr td��|d dkr8| |d S | |d d S dS )a Return the low median of numeric data.
When the number of data points is odd, the middle value is returned.
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>>> median_low([1, 3, 5])
3
>>> median_low([1, 3, 5, 7])
3
r rd re r( Nrf �r7 r, r& r& r' r
� s c C s, t | �} t| �}|dkr td��| |d S )a Return the high median of data.
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3
>>> median_high([1, 3, 5, 7])
5
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r� t|�t|�d }Y nX t| |�}t | ||�}|}|| d } |||d | | S )a� Return the 50th percentile (median) of grouped continuous data.
>>> median_grouped([1, 2, 2, 3, 4, 4, 4, 4, 4, 5])
3.7
>>> median_grouped([52, 52, 53, 54])
52.5
This calculates the median as the 50th percentile, and should be
used when your data is continuous and grouped. In the above example,
the values 1, 2, 3, etc. actually represent the midpoint of classes
0.5-1.5, 1.5-2.5, 2.5-3.5, etc. The middle value falls somewhere in
class 3.5-4.5, and interpolation is used to estimate it.
Optional argument ``interval`` represents the class interval, and
defaults to 1. Changing the class interval naturally will change the
interpolated 50th percentile value:
>>> median_grouped([1, 3, 3, 5, 7], interval=1)
3.25
>>> median_grouped([1, 3, 3, 5, 7], interval=2)
3.5
This function does not check whether the data points are at least
``interval`` apart.
r rd r( re zexpected number but got %r)
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rB td�d�Y nX dS )ax Return the most common data point from discrete or nominal data.
``mode`` assumes discrete data, and returns a single value. This is the
standard treatment of the mode as commonly taught in schools:
>>> mode([1, 1, 2, 3, 3, 3, 3, 4])
3
This also works with nominal (non-numeric) data:
>>> mode(["red", "blue", "blue", "red", "green", "red", "red"])
'red'
If there are multiple modes with same frequency, return the first one
encountered:
>>> mode(['red', 'red', 'green', 'blue', 'blue'])
'red'
If *data* is empty, ``mode``, raises StatisticsError.
r( r zno mode for empty dataN)r[ r" � most_common�
IndexErrorr )r7 Zpairsr& r& r' r s c C s@ t t| ���� }tt|td�d�dg f�\}}tttd�|��S )a. Return a list of the most frequently occurring values.
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or an empty list if *data* is empty.
>>> multimode('aabbbbbbbbcc')
['b']
>>> multimode('aabbbbccddddeeffffgg')
['b', 'd', 'f']
>>> multimode('')
[]
r( )�keyr )r" r[ ro �nextr r! r\ r3 )r7 ZcountsZmaxcountZ
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C sL |dk rt d��t| �} t| �}|dk r0t d��|dkr�|d }g }td|�D ]N}|| | }|| || }| | || | |d | | } |�| � qN|S |dk�r:|d }g }td|�D ]r}|| | }|dk r�dn||d kr�|d n|}|| || }| |d || | | | | } |�| � q�|S td|����dS ) a� Divide *data* into *n* continuous intervals with equal probability.
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Set *n* to 4 for quartiles (the default). Set *n* to 10 for deciles.
Set *n* to 100 for percentiles which gives the 99 cuts points that
separate *data* in to 100 equal sized groups.
The *data* can be any iterable containing sample.
The cut points are linearly interpolated between data points.
If *method* is set to *inclusive*, *data* is treated as population
data. The minimum value is treated as the 0th percentile and the
maximum value is treated as the 100th percentile.
r( zn must be at least 1re z"must have at least two data pointsZ inclusivert zUnknown method: N)r r5 rQ �range�appendrM )
r7 r, ru Zld�m�resultrS �jZdeltaZ interpolatedr& r& r' r l s4 $
$$ c s� � dk r,t � fdd�| D ��\}}}||fS t| �� t � fdd�| D ��\}}}t � fdd�| D ��\}}}||d t| � 8 }||fS )a; Return sum of square deviations of sequence data.
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lead to garbage results.
Nc 3 s | ]}|� d V qdS �re Nr& ra ��cr& r' r- � s z_ss.<locals>.<genexpr>c 3 s | ]}|� d V qdS r{ r& ra r| r& r' r- � s c 3 s | ]}|� V qd S r) r& ra r| r& r' r- � s re )r> r rQ )r7 r} r: r= r9 �UZtotal2Zcount2r& r| r' �_ss� s r c C sL t | �| krt| �} t| �}|dk r,td��t| |�\}}t||d |�S )a� Return the sample variance of data.
data should be an iterable of Real-valued numbers, with at least two
values. The optional argument xbar, if given, should be the mean of
the data. If it is missing or None, the mean is automatically calculated.
Use this function when your data is a sample from a population. To
calculate the variance from the entire population, see ``pvariance``.
Examples:
>>> data = [2.75, 1.75, 1.25, 0.25, 0.5, 1.25, 3.5]
>>> variance(data)
1.3720238095238095
If you have already calculated the mean of your data, you can pass it as
the optional second argument ``xbar`` to avoid recalculating it:
>>> m = mean(data)
>>> variance(data, m)
1.3720238095238095
This function does not check that ``xbar`` is actually the mean of
``data``. Giving arbitrary values for ``xbar`` may lead to invalid or
impossible results.
Decimals and Fractions are supported:
>>> from decimal import Decimal as D
>>> variance([D("27.5"), D("30.25"), D("30.25"), D("34.5"), D("41.75")])
Decimal('31.01875')
>>> from fractions import Fraction as F
>>> variance([F(1, 6), F(1, 2), F(5, 3)])
Fraction(67, 108)
re z*variance requires at least two data pointsr( �r[ r\ rQ r r rP )r7 �xbarr, r: �ssr& r& r' r � s & c C sH t | �| krt| �} t| �}|dk r,td��t| |�\}}t|| |�S )a, Return the population variance of ``data``.
data should be a sequence or iterable of Real-valued numbers, with at least one
value. The optional argument mu, if given, should be the mean of
the data. If it is missing or None, the mean is automatically calculated.
Use this function to calculate the variance from the entire population.
To estimate the variance from a sample, the ``variance`` function is
usually a better choice.
Examples:
>>> data = [0.0, 0.25, 0.25, 1.25, 1.5, 1.75, 2.75, 3.25]
>>> pvariance(data)
1.25
If you have already calculated the mean of the data, you can pass it as
the optional second argument to avoid recalculating it:
>>> mu = mean(data)
>>> pvariance(data, mu)
1.25
Decimals and Fractions are supported:
>>> from decimal import Decimal as D
>>> pvariance([D("27.5"), D("30.25"), D("30.25"), D("34.5"), D("41.75")])
Decimal('24.815')
>>> from fractions import Fraction as F
>>> pvariance([F(1, 4), F(5, 4), F(1, 2)])
Fraction(13, 72)
r( z*pvariance requires at least one data pointr� )r7 �mur, r: r� r& r& r' r � s # c C s8 t | |�}z
|�� W S tk
r2 t�|� Y S X dS )z�Return the square root of the sample variance.
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>>> stdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75])
1.0810874155219827
N)r r r? r@ )r7 r� �varr& r& r' r s
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>>> pstdev([1.5, 2.5, 2.5, 2.75, 3.25, 4.75])
0.986893273527251
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>g('߿��A?g��~z �?g@�3��?gɅ3��?g3fR�x�?gI�F��l @g����t��>g*�Y��n�>gESB\T?g�N;A+�?g�UR1��?gE� F���?gP�n��@g&�>���@g����i�<g�@�F�>g�tcI,\�>g�ŝ���I?g*F2�v�?g�C4�?g��O�1�?)r r r )�pr� �sigma�q�rZnumZdenrA r& r& r' �_normal_dist_inv_cdf9 sd ���������������������������
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zNormalDist.__init__c C s. t |ttf�st|�}t|�}| |t||��S )z5Make a normal distribution instance from sample data.)rb r\ �tupler r )�clsr7 r� r& r& r' � from_samples� s zNormalDist.from_samplesN)�seedc sB |dkrt jn
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<listcomp>� s z&NormalDist.samples.<locals>.<listcomp>)�randomr� ZRandomr� r� rv )r� r, r� r& r� r' �samples� s zNormalDist.samplesc C s< | j d }|std��t|| j d d| �tt| � S )z4Probability density function. P(x <= X < x+dx) / dx� @z$pdf() not defined when sigma is zerog �)r� r r r� r r )r� rA r r& r& r' �pdf� s
zNormalDist.pdfc C s2 | j std��ddt|| j | j td� � S )z,Cumulative distribution function. P(X <= x)z$cdf() not defined when sigma is zeror� r� r� )r� r r r� r )r� rA r& r& r' �cdf� s zNormalDist.cdfc C s: |dks|dkrt d��| jdkr*t d��t|| j| j�S )aS Inverse cumulative distribution function. x : P(X <= x) = p
Finds the value of the random variable such that the probability of
the variable being less than or equal to that value equals the given
probability.
This function is also called the percent point function or quantile
function.
r� r� z$p must be in the range 0.0 < p < 1.0z-cdf() not defined when sigma at or below zero)r r� r� r� )r� r� r& r& r' �inv_cdf� s
zNormalDist.inv_cdfrs c s � �fdd�t d� �D �S )an Divide into *n* continuous intervals with equal probability.
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Set *n* to 100 for percentiles which gives the 99 cuts points that
separate the normal distribution in to 100 equal sized groups.
c s g | ]}�� |� ��qS r& )r� r� �r, r� r& r' r� � s z(NormalDist.quantiles.<locals>.<listcomp>r( )rv )r� r, r& r� r' r � s zNormalDist.quantilesc C s t |t�std��| | }}|j|jf|j|jfk r>|| }}|j|j }}|rT|s\td��|| }t|j|j �}|s�dt|d|j t d� � S |j| |j| }|j|j t |d |t
|| � � } || | }
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�|� |
� �t|� | �|� | � � S )a� Compute the overlapping coefficient (OVL) between two normal distributions.
Measures the agreement between two normal probability distributions.
Returns a value between 0.0 and 1.0 giving the overlapping area in
the two underlying probability density functions.
>>> N1 = NormalDist(2.4, 1.6)
>>> N2 = NormalDist(3.2, 2.0)
>>> N1.overlap(N2)
0.8035050657330205
z$Expected another NormalDist instancez(overlap() not defined when sigma is zeror� r� ) rb r rF r� r� r r r r r r r� ) r� �other�X�YZX_varZY_varZdvZdmrR �b�x1�x2r& r& r' �overlap� s"
( zNormalDist.overlapc C s | j S )z+Arithmetic mean of the normal distribution.�r� �r� r& r& r' r � s zNormalDist.meanc C s | j S )z,Return the median of the normal distributionr� r� r& r& r' r � s zNormalDist.medianc C s | j S )z�Return the mode of the normal distribution
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function (pdf) takes its maximum value.
r� r� r& r& r' r � s zNormalDist.modec C s | j S )z.Standard deviation of the normal distribution.�r� r� r& r& r' r � s zNormalDist.stdevc C s
| j d S )z!Square of the standard deviation.r� r� r� r& r& r' r s zNormalDist.variancec C s8 t |t�r&t| j|j t| j|j��S t| j| | j�S )aj Add a constant or another NormalDist instance.
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independent or if they are jointly normally distributed.
�rb r r� r r� �r� r� r& r& r' �__add__ s
zNormalDist.__add__c C s8 t |t�r&t| j|j t| j|j��S t| j| | j�S )as Subtract a constant or another NormalDist instance.
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leaving sigma unchanged.
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independent or if they are jointly normally distributed.
r� r� r& r& r' �__sub__ s
zNormalDist.__sub__c C s t | j| | jt|� �S )z�Multiply both mu and sigma by a constant.
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�r r� r� r r� r& r& r' �__mul__% s zNormalDist.__mul__c C s t | j| | jt|� �S )z�Divide both mu and sigma by a constant.
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r� r� r& r& r' � __truediv__- s zNormalDist.__truediv__c C s t | j| j�S )z Return a copy of the instance.�r r� r� �r� r& r& r' �__pos__5 s zNormalDist.__pos__c C s t | j | j�S )z(Negates mu while keeping sigma the same.r� r� r& r& r' �__neg__9 s zNormalDist.__neg__c C s
| | S )z<Subtract a NormalDist from a constant or another NormalDist.r& r� r& r& r' �__rsub__? s zNormalDist.__rsub__c C s& t |t�stS | j|jko$| j|jkS )zFTwo NormalDist objects are equal if their mu and sigma are both equal.)rb r �NotImplementedr� r� r� r& r& r' �__eq__E s
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