[issue17457] Unittest discover fails with namespace packages and builtin modules

[Roundup Robot]

Roundup Robot added the comment:

New changeset 57cb8a6e8f10 by R David Murray in branch 'default':
whatsnew: unittest discover works on namespace packages (#17457).
http://hg.python.org/cpython/rev/57cb8a6e8f10

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<http://bugs.python.org/issue17457>
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