[issue21321] itertools.islice() doesn't release reference to the source iterator when the slice is exhausted

[Roundup Robot]

Roundup Robot added the comment:

New changeset 8ee76e1b5aa6 by Antoine Pitrou in branch '2.7':
Issue #21321: itertools.islice() now releases the reference to the source iterator when the slice is exhausted.
http://hg.python.org/cpython/rev/8ee76e1b5aa6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21321>
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