[issue24221] Clean-up and optimization for heapq siftup() and siftdown()

[Roundup Robot]

Roundup Robot added the comment:

New changeset 490720fc1525 by Raymond Hettinger in branch 'default':
Issue #24221:  Small optimizations for heapq.
https://hg.python.org/cpython/rev/490720fc1525

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nosy: +python-dev

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24221>
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