[issue30346] Odd behavior when unpacking `itertools.groupby`

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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assignee:  -> rhettinger
nosy: +rhettinger

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30346>
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