from __future__ import with_statement

http://docs.python.org/library/__future__

 

http://stackoverflow.com/questions/3791903/which-python-version-need-from-future-import-with-statement/3792223#3792223

 

up vote 0 down vote favorite	Currently i'm using python 2.6.5, I didn't use from __ future __ import with_statement,it can use with statement all right. I want to know in which version we need use from __ future __ import with_statement,which not? python  future link | edit | delete | flag asked  2 hours ago mlzboy 21 4
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3 Answers

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up vote 2 down vote accept	You only need it in Python 2.5. Older versions (<= 2.4) don't support it and newer versions (>= 2.6) have it enabled by default. So if you want to support Python >= 2.5, you can simply put the from __future__ import with_statement at the beginning. For newer versions, it will simply be ignored. link | flag answered  2 hours ago AndiDog 9,886 1 4 20
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up vote 0 down vote accept	From the doc: New in version 2.5. link | flag answered  2 hours ago Lie Ryan 2,121 11
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up vote 1 down vote accept

__future__ features are self-documenting. Try this: >>> from __future__ import with_statement >>> with_statement.getOptionalRelease() (2, 5, 0, 'alpha', 1) >>> with_statement.getMandatoryRelease() (2, 6, 0, 'alpha', 0) These respectively indicate the first release supporting from __future__ import with_statementand the first release to support it without using from __future__. Also, read this: >>> import __future__ >>> help(__future__) link | flag answered  11 mins ago