; Ιβ"Ic@ssdZddlZddlmZdddgZGd„deƒZd „Zed „ƒZGd „deƒZ dS( u4Utilities for with-statement contexts. See PEP 343.iN(uwrapsucontextmanagerunesteduclosingcBs/|EeZdZd„Zd„Zd„ZdS(u%Helper for @contextmanager decorator.cCs ||_dS(N(ugen(uselfugen((u'/mit/python/lib/python3.0/contextlib.pyu__init__ scCs8yt|jƒSWn tk otdƒ‚YnXdS(Nugenerator didn't yield(unextugenu StopIterationu RuntimeError(uself((u'/mit/python/lib/python3.0/contextlib.pyu __enter__sc Csζ|dko<yt|jƒWntk o dSYqβXtdƒ‚nš|dko |ƒ}ny&|jj|||ƒtdƒ‚WnVtk o%}z||k SWYdd}~Xn'tjƒd|k o‚nYnXdS(Nugenerator didn't stopu#generator didn't stop after throw()i(uNoneunextugenu StopIterationu RuntimeErroruthrowusysuexc_info(uselfutypeuvalueu tracebackuexc((u'/mit/python/lib/python3.0/contextlib.pyu__exit__s     N(u__name__u __module__u__doc__u__init__u __enter__u__exit__(u __locals__((u'/mit/python/lib/python3.0/contextlib.pyuGeneratorContextManagers   uGeneratorContextManagercstˆƒ‡fd†ƒ}|S(uά@contextmanager decorator. Typical usage: @contextmanager def some_generator(): try: yield finally: This makes this: with some_generator() as : equivalent to this: try: = finally: cstˆ||ŽƒS(N(uGeneratorContextManager(uargsukwds(ufunc(u'/mit/python/lib/python3.0/contextlib.pyuhelperQs(uwraps(ufuncuhelper((ufuncu'/mit/python/lib/python3.0/contextlib.pyucontextmanager5scgsζg}g}d}zdyIx=|D]5}|j}|j}|j|ƒƒ|j|ƒqW|VWntjƒ}YnXWdxJ|oB|jƒ}y||Œo d}nWq|tjƒ}Yq|Xq|W|dko|d‚nXdS(uSupport multiple context managers in a single with-statement. Code like this: with nested(A, B, C) as (X, Y, Z): is equivalent to this: with A as X: with B as Y: with C as Z: Ni(NNN(NNN(NNN(uNoneu__exit__u __enter__uappendusysuexc_infoupop(umanagersuexitsuvarsuexcumgruexituenter((u'/mit/python/lib/python3.0/contextlib.pyunestedWs0      cBs/|EeZdZd„Zd„Zd„ZdS(u2Context to automatically close something at the end of a block. Code like this: with closing(.open()) as f: is equivalent to this: f = .open() try: finally: f.close() cCs ||_dS(N(uthing(uselfuthing((u'/mit/python/lib/python3.0/contextlib.pyu__init__•scCs|jS(N(uthing(uself((u'/mit/python/lib/python3.0/contextlib.pyu __enter__—scGs|jjƒdS(N(uthinguclose(uselfuexc_info((u'/mit/python/lib/python3.0/contextlib.pyu__exit__™sN(u__name__u __module__u__doc__u__init__u __enter__u__exit__(u __locals__((u'/mit/python/lib/python3.0/contextlib.pyuclosing„s   ( u__doc__usysu functoolsuwrapsu__all__uobjectuGeneratorContextManagerucontextmanagerunesteduclosing(((u'/mit/python/lib/python3.0/contextlib.pyus - "-