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� z fc @ s� d Z d d l Z d d l m Z d d l m Z d d d g Z d e f d � � YZ d � Z e d � � Z d e f d � � YZ d S( s4 Utilities for with-statement contexts. See PEP 343.i����N( t wraps( t warnt contextmanagert nestedt closingt GeneratorContextManagerc B s) e Z d Z d � Z d � Z d � Z RS( s% Helper for @contextmanager decorator.c C s | | _ d S( N( t gen( t selfR ( ( s" /usr/lib64/python2.7/contextlib.pyt __init__ s c C s5 y | j j � SWn t k r0 t d � � n Xd S( Ns generator didn't yield( R t nextt StopIterationt RuntimeError( R ( ( s" /usr/lib64/python2.7/contextlib.pyt __enter__ s c C s� | d k rA y | j j � Wn t k r1 d SXt d � � n} | d k rY | � } n y& | j j | | | � t d � � Wn< t k r� } | | k St j � d | k r� � q� n Xd S( Ns generator didn't stops# generator didn't stop after throw()i ( t NoneR R R R t throwt syst exc_info( R t typet valuet tracebackt exc( ( s" /usr/lib64/python2.7/contextlib.pyt __exit__ s ( t __name__t __module__t __doc__R R R ( ( ( s" /usr/lib64/python2.7/contextlib.pyR s 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> c s t � | | � � S( N( R ( t argst kwds( t func( s" /usr/lib64/python2.7/contextlib.pyt helperR s ( R ( R R ( ( R s" /usr/lib64/python2.7/contextlib.pyR 6 s c g s� t d t d � g } g } d } zc yI x= | D]5 } | j } | j } | j | � � | j | � q/ W| VWn t j � } n XWd xE | r� | j � } y | | � r� d } n Wq� t j � } q� Xq� W| d k r� | d | d | d � n Xd S( s� 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 R R t appendR R t pop( t managerst exitst varsR t mgrt exitt enter( ( s" /usr/lib64/python2.7/contextlib.pyR X s0 c B s) e Z d Z d � Z d � Z d � 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() c C s | | _ d S( N( t thing( R R& ( ( s" /usr/lib64/python2.7/contextlib.pyR � s c C s | j S( N( R& ( R ( ( s" /usr/lib64/python2.7/contextlib.pyR � s c G s | j j � d S( N( R& t close( R R ( ( s" /usr/lib64/python2.7/contextlib.pyR � s ( R R R R R R ( ( ( s" /usr/lib64/python2.7/contextlib.pyR � s ( R R t functoolsR t warningsR t __all__t objectR R R R ( ( ( s" /usr/lib64/python2.7/contextlib.pyt <module> s - ",
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