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

[Anton Afanasyev]

Anton Afanasyev added the comment:

Antoine, not sure about 2.7. The issue first arose for me at Python 2.7, so I would prefer "issue21321_2.7_e3217efa6edd_4.diff" patch be applied.

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