[issue13814] Generators as context managers.

[Arkadiusz Wahlig]

New submission from Arkadiusz Wahlig <arkadiusz.wahlig at gmail.com>:

Generators should support the with statement with __exit__ calling self.close().

with genfunc() as g:
    for item in g:
        print(item)

----------
messages: 151530
nosy: yak
priority: normal
severity: normal
status: open
title: Generators as context managers.
type: enhancement
versions: Python 2.7, Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue13814>
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