Hi!
It would be great to have AUR (en) - python-pyfuse3 moved to the “official” repository.
pyfuse3 is recommended over python-llfuse, which is not developed anymore (s. GitHub - python-llfuse/python-llfuse: Python bindings for the low level FUSE API), and can be used e.g. to mount backups created with borg in the upcoming release 1.2 (s. borg mount not available: loading FUSE support failed [ImportError: No module named 'llfuse'] · Issue #5819 · borgbackup/borg · GitHub).
Best regards!