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lib64/python2.7/contextlib.pyo 0000644 00000010546 15053274244 0012154 0 ustar 00 ļæ½
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s4 Utilities for with-statement contexts. See PEP 343.iļæ½ļæ½ļæ½ļæ½N( t wraps( t warnt contextmanagert nestedt closingt GeneratorContextManagerc B s) e Z d Z d ļæ½ Z d ļæ½ Z d ļæ½ Z RS( s% Helper for @contextmanager decorator.c C s
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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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sļæ½ Combine multiple context managers into a single nested context manager.
This function has been deprecated in favour of the multiple manager form
of the with statement.
The one advantage of this function over the multiple manager form of the
with statement is that argument unpacking allows it to be
used with a variable number of context managers as follows:
with nested(*managers):
do_something()
s> With-statements now directly support multiple context managersi Ni i i ( NNN( NNN( NNN( R t DeprecationWarningR
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c B s) e Z d Z d ļæ½ Z d ļæ½ Z d ļæ½ Z RS( s2 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()
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