Write a new lecture on Python Virtual Environments

[john-science]

This should ideally be an introduction to those new to them, and not deep into theory or the underlying technology.

• This is a really important topic in Python.
• Writing homework for this will be odd.

[john-science]

Student Request:

I've been wondering if it is possible to have virtual environments with different versions of Python.
I was trying to figure that out a couple months back, but couldn't figure get it to work.