Where can I learn Object Oriented Programming (OOP) in Python with free resources, please?

Question

Object Oriented Programming (OOP)

Answer 1

You can check this:
https://realpython.com/python3-object-oriented-programming/

Answer 2

Have you completed the oop lessons on sololearn?
https://www.sololearn.com/learn/JUMP_LINK__&&__Python__&&__JUMP_LINK/2467/

Answer 3

I have not. Thank you all.

Answer 4

There are good OOP tutorials in the Python3 tutorial of SoloLearn.