[issue15178] Doctest should handle situations when test files are not readable

[Bohuslav "Slavek" Kabrda]

Bohuslav "Slavek" Kabrda <bkabrda at redhat.com> added the comment:

Ok, attaching 4th version :)

I think it is nice when the testing library can react in situations like this one and not show a traceback. IMHO it is always nicer to display a pretty user-readable message than ending with a traceback.

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Added file: http://bugs.python.org/file26172/doctest-dont-end-with-exception-on-unreadable-files-v4.patch

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