do i need to learn all version of python?

Answer 1

ATHARVA DORLIKAR The more you know the more you grow and can problem solve. Plus you become a valuable asset to the team as language changes occur. I would not limit myself to the most recent.

An example though this article is a bit old as Python 3.9 moving forward but explains

https://learntocodewith.me/programming/python-2-vs-python-3/#2018-differences-of-python2-vs-3

Answer 2

Will you be using all versions of Python?

Answer 3

Uhh, no. Just get familiar with the most recent syntax/version and you're good to go. Easy to learn other versions when you know one. Or do you mean "learn all python libraries"?
https://www.sololearn.com/discuss/332117/?ref=app
https://www.sololearn.com/discuss/1949070/?ref=app
https://www.sololearn.com/discuss/1703939/?ref=app