Idea: python version manager like n for node

Maybe it would be called pv or pyver or vyper. I kinda like vyper ;) but it's already a python project.

I think I have the start of a prototype for this somewhere... https://sr.ht/~razzi/python-version-manager/

pv isn't a great name because it's the same name as this command to check progress of command: https://linux.die.net/man/1/pv. Cool command