[issue19997] imghdr.what doesn't accept bytes paths

[Claudiu.Popa]

Claudiu.Popa added the comment:

Thanks, Vajrasky, I forgot about the fact that open can open file descriptors. Here's a patch which fixes this, also adds a test for BytesIO and uses os.fsencode instead of .encode().

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Added file: http://bugs.python.org/file33174/imghdr_files.patch

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