[issue17914] add os.cpu_count()

[Roundup Robot]

Roundup Robot added the comment:

New changeset a85ac58e9eaf by Charles-Francois Natali in branch 'default':
Issue #17914: Remove OS-X special-case, and use the correct int type.
http://hg.python.org/cpython/rev/a85ac58e9eaf

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17914>
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