[issue26800] Don't accept bytearray as filenames part 2

[Brett Cannon]

Brett Cannon added the comment:

Assigning to Serhiy to apply since Larry doesn't care and I already reviewed the patch.

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assignee: larry -> serhiy.storchaka
stage: patch review -> commit review

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26800>
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