[issue18844] allow weights in random.choice

[Roundup Robot]

Roundup Robot added the comment:

New changeset d4e715e725ef by Raymond Hettinger in branch '3.6':
Issue #18844:  Add more tests
https://hg.python.org/cpython/rev/d4e715e725ef

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18844>
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