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[issue13585] Add contextlib.ExitStack



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May 1, 2012, 5:22 AM

Post #1 of 1 (127 views)
[issue13585] Add contextlib.ExitStack

Nick Coghlan <ncoghlan [at] gmail> added the comment:

Latest draft of API is here: http://contextlib2_dev.readthedocs.org/en/latest/index.html#contextlib2.ExitStack

An updated version of the "I forgot I could use multiple context managers in a with statement" example:

with ExitStack() as stack:
src = open(source)
dest = open(destination, 'w')
copy(src, dest)

The example of opening a collection of files remains unchanged (aside from s/ContextStack/ExitStack/).

Also see: http://contextlib2_dev.readthedocs.org/en/latest/index.html#replacing-any-use-of-try-finally-and-flag-variables

assignee: rhettinger -> ncoghlan
resolution: later ->
title: Add contextlib.CallbackStack -> Add contextlib.ExitStack

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