WARNING: Ignoring invalid distribution -ip (d:\python_3.9.7\lib\site-packages) is displayed during the installation process
why does this appear？
>Solution :
This occurs due to files names with the ‘~’ prefix in site-packages. Please remove those files / folders. It will solve your problem.
You can list them (linux, mac) with
ls -a /xx/xx/xx/lib/pythonx.x/site-packages | grep "^~"
on windows I would strongly recommend the linux subsystem for windows for this kind of actions. But of course this can also be done via the explorer or the cmd
Then remove files/folders prefixed by ‘~’.