[issue38656] mimetypes for python 3.7.5 fails to detect matroska video

[Karthikeyan Singaravelan]

Karthikeyan Singaravelan <tir.karthi at gmail.com> added the comment:

I couldn't find mkv in mimetypes with search. Can you please post the output of the mimetypes query in 3.7.4 and 3.7.5 for the regression? In the attached GitHub issue the user reports mkv returns None and mp4 is detected.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38656>
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