Emacs: distinguish between Python 2.x and 3.x in emacs

Question

I use Emacs and am currently working on projects using different versions of Python (2.x and 3.x), and both have different documentation sets and different interactive shells.

I want to be able to distinguish between these versions in Emacs (so I read the correct documentation using pylookup, and also installed the correct interactive shell). How can I do this in Emacs?

Answer 1

See this old question: Both Python 2 and 3 in Emacs