[issue18864] Implementation for PEP 451 (importlib.machinery.ModuleSpec)

[Roundup Robot]

Roundup Robot added the comment:

New changeset 98bab4a03120 by Brett Cannon in branch 'default':
Issue #18864: Don't try and use unittest as a testing module for
http://hg.python.org/cpython/rev/98bab4a03120

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nosy: +python-dev

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