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c B s8 e Z d Z d � Z e j d � � Z e d � � Z RS( s, An abstract base class for context managers.c C s | S( s0 Return `self` upon entering the runtime context.( ( t self( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/contextlib2.pyt __enter__8 s c C s d S( s9 Raise any exception triggered within the runtime context.N( R ( R t exc_typet exc_valuet traceback( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/contextlib2.pyt __exit__< s c C s | t k r t | d d � St S( s< Check whether subclass is considered a subclass of this ABC.R R$ ( R R R ( t clsR ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/contextlib2.pyt __subclasshook__A s ( t __name__t
__module__t __doc__R t abct abstractmethodR$ t classmethodR& ( ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/contextlib2.pyR 5 s c B s) e Z d Z d � Z d � Z d � Z RS( sJ A base class or mixin that enables context managers to work as decorators.c C s t j d t � | j � S( s� Returns the context manager used to actually wrap the call to the
decorated function.
The default implementation just returns *self*.
Overriding this method allows otherwise one-shot context managers
like _GeneratorContextManager to support use as decorators via
implicit recreation.
DEPRECATED: refresh_cm was never added to the standard library's
ContextDecorator API
s2 refresh_cm was never added to the standard library( t warningst warnt DeprecationWarningt _recreate_cm( R ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/contextlib2.pyt
refresh_cmL s
c C s | S( s6 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.
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c s t � � � f d � � } | S( s� @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>
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Code like this:
with closing(<module>.open(<arguments>)) as f:
<block>
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f = <module>.open(<arguments>)
try:
<block>
finally:
f.close()
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# 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)
t stdout( R' R( R) RP ( ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/contextlib2.pyR s c B s e Z d Z d Z RS( sC Context manager for temporarily redirecting stderr to another file.t stderr( R' R( R) RP ( ( ( s� /builddir/build/BUILDROOT/alt-python27-pip-20.2.4-5.el8.x86_64/opt/alt/python27/lib/python2.7/site-packages/pip/_vendor/contextlib2.pyR s c B s) e Z d Z d � Z d � Z d � Z RS( s? 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
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s� 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
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_push_cm_exit� s c C sQ t | � } y
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r< | j j | � n X| j | | � | S( s Registers a callback with the standard __exit__ method signature
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to the method instead of the object itself)
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c s/ � � � f d � } � | _ | j | � � S( s\ Registers an arbitrary callback and arguments.
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c C s8 t | � } | j } | j | � } | j | | � | S( s� Enters the supplied context manager
If successful, also pushes its __exit__ method as a callback and
returns the result of the __enter__ method.
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c B s, e Z d Z d d � Z d � Z d � Z RS( sM 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
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