[issue7667] test_doctest fails with non-ascii path

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

There are 2 different issues:
 * doctest.DocTestRunner.report_failure() raise an unicode error if the source line type is unicode: _failure_header() should convert the line to bytes using ASCII with backslashreplace error handler (as sys.stderr)
 * traceback.print_tb() raises an unicode error if the source line type is unicode: same solution (ASCII+bashslashreplace)

See also #Issue7708.

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keywords: +patch
nosy: +haypo
Added file: http://bugs.python.org/file15962/test_doctest.patch

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