[issue11839] argparse: unexpected behavior of default for FileType('w')

[Roundup Robot]

Roundup Robot added the comment:

New changeset 1b614921aefa by R David Murray in branch '3.2':
#12776,#11839: call argparse type function only once.
http://hg.python.org/cpython/rev/1b614921aefa

New changeset 74f6d87cd471 by R David Murray in branch 'default':
Merge #12776,#11839: call argparse type function only once.
http://hg.python.org/cpython/rev/74f6d87cd471

New changeset 62b5667ef2f4 by R David Murray in branch '2.7':
#12776,#11839: call argparse type function only once.
http://hg.python.org/cpython/rev/62b5667ef2f4

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nosy: +python-dev

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<http://bugs.python.org/issue11839>
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