[issue19049] itertools.tee uses int for indices

[Roundup Robot]

Roundup Robot added the comment:

New changeset 900bf633b7f4 by Antoine Pitrou in branch 'default':
Add a comment making it explicit that itertools.tee() is already 64bit-safe (issue #19049)
http://hg.python.org/cpython/rev/900bf633b7f4

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nosy: +python-dev

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<http://bugs.python.org/issue19049>
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