[issue23700] tempfile.NamedTemporaryFile can close too early if used as iterator

[Roundup Robot]

Roundup Robot added the comment:

New changeset a90ec6b96af2 by Serhiy Storchaka in branch '3.4':
Issue #23700: NamedTemporaryFile iterator closed underlied file object in
https://hg.python.org/cpython/rev/a90ec6b96af2

New changeset e639750ecd92 by Serhiy Storchaka in branch 'default':
Issue #23700: NamedTemporaryFile iterator closed underlied file object in
https://hg.python.org/cpython/rev/e639750ecd92

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<http://bugs.python.org/issue23700>
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