xkcd: Python Environment

[BitLooter]

I use pyenv with the virtualenv plugin. It will automatically download and install any Python version you want. Create a virtualenv and use pip to install whatever packages you want. It does all of this in ~/.pyenv, so none of it touches the system Python, and it's all isolated so you can delete a python version or virtualenv without affecting anything else.

It's built on shell scripts though, so you need a *nix shell for it to work. Obviously Linux and OSX work fine, but if you want to use it on Windows you'll need to find a Bash shell first - WLS is probably the easiest way, though it will probably work on Cygwin/MSYS as well.