Been doing what you indicate in this post: Moving Beets from Python 2.7 to 3.7.1 on MacOS
pip uninstall beets
to remove the version from the Python 2 installation before doing pip3 install beets
Been doing what you indicate in this post: Moving Beets from Python 2.7 to 3.7.1 on MacOS
pip uninstall beets
to remove the version from the Python 2 installation before doing pip3 install beets