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

[STINNER Victor]

STINNER Victor added the comment:

imghdr_bytes.patch should use os.fsencode() to encode the filename, not filename.encode().

(You may use a valid sound file of the Python suite test instead of generating an invalid sounf file.)

imghdr_files.patch looks overkill. I don't think that it's useful to support integer file descriptor. Being able to pass an open file is enough. imghdr_bytes.patch is fine.

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nosy: +haypo

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<http://bugs.python.org/issue19997>
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