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

[Claudiu.Popa]

Claudiu.Popa added the comment:

Added patch which addresses Eric's comments. It contains a situation which I'm not so happy, mostly due to not knowing in depth (or at least at a comfortable level) the import mechanics: in the AttributeError except handler, if the spec can't be determined and the module is not built-in, a TypeError is raised to notice the user that discovery can't be done for that particular package. Probably this situation (no __file__, no __spec__ and no built-in) is common, but I can't think right now at another way of solving it.

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Added file: http://bugs.python.org/file32783/unittest_discover.patch

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