polyzen [1] filed a deletion request for python-pympv [2]: Flagged OOD for over 2 years and orphaned. Also, from python-mpv:

This must conflict with python-pympv and python-pympv-git, too!

All use: import mpv

[1] https://aur.archlinux.org/account/polyzen/ [2] https://aur.archlinux.org/pkgbase/python-pympv/