[issue21193] pow(a, b, c) should not raise TypeError when b is negative and c is provided

[Roundup Robot]

Roundup Robot added the comment:

New changeset a8f3ca72f703 by Benjamin Peterson in branch 'default':
test the change of #21193 correctly
http://hg.python.org/cpython/rev/a8f3ca72f703

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue21193>
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