What version should you start learning python from?

Question

Django

Decided to switch from php to python. I asked myself the question, with which version to start learning python?
In the future, I'm going to program mainly in python and use the django framework.

Answer 1

From the 3rd. Slowly but surely everyone is moving to it (ie PyPy3 beta recently appeared)

Answer 2

Soon, programmers who work with the 2nd branch will be looked at with pity :)

Answer 3

You can go to pythonclock.org to see what to start on from 3rd.