[issue18844] allow weights in random.choice

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Updated patch. Synchronized with tip and added optimizations.

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Added file: http://bugs.python.org/file36331/weighted_choice_generator_2.patch

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