[issue29882] Add an efficient popcount method for integers

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:


New changeset 83a0ef2162aa379071e243f1b696aa6814edcd2a by Mark Dickinson in branch 'main':
bpo-29882: Fix portability bug introduced in GH-30774 (#30794)
https://github.com/python/cpython/commit/83a0ef2162aa379071e243f1b696aa6814edcd2a


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<https://bugs.python.org/issue29882>
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