python (3.11.7)
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MethodType GenericAlias)asynccontextmanagercontextmanagerclosing nullcontextAbstractContextManagerAbstractAsyncContextManagerAsyncExitStackContextDecorator ExitStackredirect_stdoutredirect_stderrsuppressaclosingchdirc d e Zd ZdZ ee Zd Zej d Z
ed Z dS )r z,An abstract base class for context managers.c | S z0Return `self` upon entering the runtime context. selfs >/BuggyBox/python/3.11.7/bootstrap/lib/python3.11/contextlib.py __enter__z AbstractContextManager.__enter__ s c dS z9Raise any exception triggered within the runtime context.Nr r exc_type exc_value tracebacks r __exit__z AbstractContextManager.__exit__ s tr c N | t u rt j |dd S t S )Nr r% )r _collections_abc_check_methodsNotImplementedclsCs r __subclasshook__z'AbstractContextManager.__subclasshook__ s) ( ( (#21k:NN N r N) __name__
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c e Zd ZdZd Zd ZdS )r zJA base class or mixin that enables context managers to work as decorators.c | S )a6 Return a recreated instance of self.
Allows an otherwise one-shot context manager like
_GeneratorContextManager to support use as
a decorator via implicit recreation.
This is a private interface just for _GeneratorContextManager.
See issue #11647 for details.
r r s r _recreate_cmz ContextDecorator._recreate_cmA s r c @ t fd }|S )Nc p 5 | i |cd d d S # 1 swxY w Y d S Nr> argskwdsfuncr s r innerz(ContextDecorator.__call__.<locals>.innerN s ""$$
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r r c e Zd ZdZd Zd ZdS )AsyncContextDecoratorzPA base class or mixin that enables async context managers to work as decorators.c | S )z-Return a recreated instance of self.
r r s r r> z"AsyncContextDecorator._recreate_cmX s r c @ t fd }|S )Nc K 4 d {V | i | d {V cd d d d {V S # 1 d {V swxY w Y d S rA rB rC s r rG z-AsyncContextDecorator.__call__.<locals>.inner^ s ((**
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r rL c e Zd ZdZd Zd ZdS ) _GeneratorContextManagerBasezBShared functionality for @contextmanager and @asynccontextmanager.c ||i || _ |||c| _ | _ | _ t |dd }|t | j }|| _ d S )Nr1 )genrF rD rE getattrtyper1 )r rF rD rE docs r __init__z%_GeneratorContextManagerBase.__init__h s] 4&&&*.d' 49didIt,, ;t**$C r c N | | j | j | j S rA ) __class__rF rD rE r s r r> z)_GeneratorContextManagerBase._recreate_cmv s ~~diDI>>>r N)r. r/ r0 r1 rW r> r r r rQ rQ e s8 LL ? ? ? ? ?r rQ c e Zd ZdZd Zd ZdS )_GeneratorContextManagerz%Helper for @contextmanager decorator.c t | ` | `| ` t | j S # t
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54C C C7( 7( 7( 7( 7(r rn c < t fd }|S )a @contextmanager decorator.
Typical usage:
@contextmanager
def some_generator(<arguments>):
<setup>
try:
yield <value>
finally:
<cleanup>
This makes this:
with some_generator(<arguments>) as <variable>:
<body>
equivalent to this:
<setup>
try:
<variable> = <value>
<body>
finally:
<cleanup>
c & t | | S rA )r[ rD rE rF s r helperz contextmanager.<locals>.helper+ s 'dD999r r rF rx s ` r r r s3 6 4[[: : : : [: Mr c < t fd }|S )a @asynccontextmanager decorator.
Typical usage:
@asynccontextmanager
async def some_async_generator(<arguments>):
<setup>
try:
yield <value>
finally:
<cleanup>
This makes this:
async with some_async_generator(<arguments>) as <variable>:
<body>
equivalent to this:
<setup>
try:
<variable> = <value>
<body>
finally:
<cleanup>
c & t | | S rA )rn rw s r rx z#asynccontextmanager.<locals>.helperL s ,T4>>>r r ry s ` r r r 1 s3 6 4[[? ? ? ? [? Mr c $ e Zd ZdZd Zd Zd ZdS )r
a2 Context to automatically close something at the end of a block.
Code like this:
with closing(<module>.open(<arguments>)) as f:
<block>
is equivalent to this:
f = <module>.open(<arguments>)
try:
<block>
finally:
f.close()
c || _ d S rA thingr r s r rW zclosing.__init__c
r c | j S rA r~ r s r r zclosing.__enter__e s
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c $ e Zd ZdZd Zd Zd ZdS )r a Async context manager for safely finalizing an asynchronously cleaned-up
resource such as an async generator, calling its ``aclose()`` method.
Code like this:
async with aclosing(<module>.fetch(<arguments>)) as agen:
<block>
is equivalent to this:
agen = <module>.fetch(<arguments>)
try:
<block>
finally:
await agen.aclose()
c || _ d S rA r~ r s r rW zaclosing.__init__} r r c K | j S rA r~ r s r r8 zaclosing.__aenter__ s zr c H K | j d {V d S rA )r rs r s r r: zaclosing.__aexit__ s2 j !!!!!!!!!!!r N)r. r/ r0 r1 rW r8 r: r r r r r k sK " " " " " "r r c $ e Zd ZdZd Zd Zd ZdS )_RedirectStreamNc " || _ g | _ d S rA ) _new_target _old_targets)r
new_targets r rW z_RedirectStream.__init__ s % r c | j t t | j t t | j | j | j S rA )r appendrT sys_streamsetattrr r s r r z_RedirectStream.__enter__ sE dl!;!;<<<T\4#3444 r c j t t | j | j d S rA )r r r r popr exctypeexcinstexctbs r r% z_RedirectStream.__exit__ s+ T\4#4#8#8#:#:;;;;;r )r. r/ r0 r rW r r% r r r r r sF G
< < < < <r r c e Zd ZdZdZdS )r aA Context manager for temporarily redirecting stdout to another file.
# How to send help() to stderr
with redirect_stdout(sys.stderr):
help(dir)
# How to write help() to a file
with open('help.txt', 'w') as f:
with redirect_stdout(f):
help(pow)
stdoutNr. r/ r0 r1 r r r r r r s
GGGr r c e Zd ZdZdZdS )r zCContext manager for temporarily redirecting stderr to another file.stderrNr r r r r r s MMGGGr r c $ e Zd ZdZd Zd Zd ZdS )r a? Context manager to suppress specified exceptions
After the exception is suppressed, execution proceeds with the next
statement following the with statement.
with suppress(FileNotFoundError):
os.remove(somefile)
# Execution still resumes here if the file was already removed
c || _ d S rA ) _exceptions)r
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d S )_BaseExitStackz.A base class for ExitStack and AsyncExitStack.c " t || S rA r cmcm_exits r _create_exit_wrapperz#_BaseExitStack._create_exit_wrapper '2&&&r c fd}|S )Nc i d S rA r r" rl tbrD callbackrE s r
_exit_wrapperz8_BaseExitStack._create_cb_wrapper.<locals>._exit_wrapper s Hd #d # # # # #r r r rD rE r s ``` r _create_cb_wrapperz!_BaseExitStack._create_cb_wrapper s. $ $ $ $ $ $ $ r c , t | _ d S rA )r _exit_callbacksr s r rW z_BaseExitStack.__init__ s $ww r c r t | }| j |_ t | _ |S )z@Preserve the context stack by transferring it to a new instance.)rU r r )r new_stacks r pop_allz_BaseExitStack.pop_all s0 DJJLL $($8 ! $ww r c t | } |j }| || n%# t $ r | | Y nw xY w|S )a Registers a callback with the standard __exit__ method signature.
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to the method instead of the object itself).
)rU r%
_push_cm_exitAttributeError_push_exit_callbackr exit_cb_type exit_methods r pushz_BaseExitStack.push su :: 2"+K
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s / AAc t | } |j }|j }n/# t $ r" t d|j d|j d dw xY w || }| || |S )zEnters the supplied context manager.
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returns the result of the __enter__ method.
'.z6' object does not support the context manager protocolN)rU r r% r TypeErrorr/ r0 r r r r+ _enter_exitresults r
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9 9 9 9 9 9r r c $ e Zd ZdZd Zd Zd ZdS )r a Context manager for dynamic management of a stack of exit callbacks.
For example:
with ExitStack() as stack:
files = [stack.enter_context(open(fname)) for fname in filenames]
# All opened files will automatically be closed at the end of
# the with statement, even if attempts to open files later
# in the list raise an exception.
c | S rA r r s r r zExitStack.__enter__+ s r c
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d S ) r a Async context manager for dynamic management of a stack of exit
callbacks.
For example:
async with AsyncExitStack() as stack:
connections = [await stack.enter_async_context(get_connection())
for i in range(5)]
# All opened connections will automatically be released at the
# end of the async with statement, even if attempts to open a
# connection later in the list raise an exception.
c " t || S rA r r s r _create_async_exit_wrapperz)AsyncExitStack._create_async_exit_wrapperr r r c fd}|S )Nc ( K i d {V d S rA r r s r r z>AsyncExitStack._create_async_cb_wrapper.<locals>._exit_wrapperx s4 (D)D)) ) ) ) ) ) ) ) ) )r r r s ``` r _create_async_cb_wrapperz'AsyncExitStack._create_async_cb_wrapperv s. * * * * * * * r c K t | } |j }|j }n/# t $ r" t d|j d|j d dw xY w || d{V }| || |S )zEnters the supplied async context manager.
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returns the result of the __aenter__ method.
r r zC' object does not support the asynchronous context manager protocolN)rU r8 r: r r r/ r0 _push_async_cm_exitr s r enter_async_contextz"AsyncExitStack.enter_async_context| s 2hh '^FMEE ' ' ' U U U1A U U U "&
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s " ,Ac t | } |j }| || n&# t $ r | |d Y nw xY w|S )a# Registers a coroutine function with the standard __aexit__ method
signature.
Can suppress exceptions the same way __aexit__ method can.
Also accepts any object with an __aexit__ method (registering a call
to the method instead of the object itself).
F)rU r: r r r r s r push_async_exitz AsyncExitStack.push_async_exit sw :: 8",K
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s / AAc b | j |g|R i |}||_ | |d |S )zfRegisters an arbitrary coroutine function and arguments.
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F)r r r r s r push_async_callbackz"AsyncExitStack.push_async_callback sK
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! 666r c D K | ddd d{V dS r )r: r s r rs zAsyncExitStack.aclose s4 nnT4...........r c ^ | || }| |d dS )zLHelper to correctly register coroutine function to __aexit__
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$ $ / / /7 7 7 3/ 3/ 3/ 3/ 3/r r c 2 e Zd ZdZddZd Zd Zd Zd ZdS ) r aO Context manager that does no additional processing.
Used as a stand-in for a normal context manager, when a particular
block of code is only sometimes used with a normal context manager:
cm = optional_cm if condition else nullcontext()
with cm:
# Perform operation, using optional_cm if condition is True
Nc || _ d S rA enter_result)r r s r rW znullcontext.__init__ s (r c | j S rA r r s r r znullcontext.__enter__ s r c d S rA r r excinfos r r% znullcontext.__exit__ r r c K | j S rA r r s r r8 znullcontext.__aenter__ s r c
K d S rA r r s r r: znullcontext.__aexit__ s r rA ) r. r/ r0 r1 rW r r% r8 r: r r r r r sn ) ) ) )! ! !
! ! !
r r c $ e Zd ZdZd Zd Zd ZdS )r zHNon thread-safe context manager to change the current working directory.c " || _ g | _ d S rA )path_old_cwd)r r s r rW zchdir.__init__ s
r c | j t j t j | j d S rA )r r osgetcwdr r r s r r zchdir.__enter__ s6
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r c \ t j | j d S rA )r r r r r s r r% zchdir.__exit__ s&
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