[issue41257] mimetypes.guess_extension('video/x-matroska') return wrong value

Ammar Askar added the comment: This looks the same as issue38656, feel free to re-open if its not. -- nosy: +ammar2 resolution: -> duplicate stage: -> resolved status: open -> closed ___ Python tracker

[issue41257] mimetypes.guess_extension('video/x-matroska') return wrong value

New submission from Saber Hayati : Code: import mimetypes print(mimetypes.guess_extension('video/x-matroska')) # return '.mpv' instead of '.mkv' Python 3.8.3 on Linux -- components: 2to3 (2.x to 3.x conversion tool) messages: 373402 nosy: Saber Hayati priority: normal severity: normal