2022
https://eugeneyan.com/writing/uncommon-python/
    https://habr.com/ru/company/skillfactory/blog/683744/
2021
FreeCodeCamp - Object Oriented Programming with Python - Full Course for Beginners of 2:12:34
    https://www.youtube.com/watch?v=Ej_02ICOIgs
https://python.plainenglish.io/inheritance-and-polymorphism-in-python-dbb211d8cfa7
    https://nuancesprog.ru/p/13803/
2019
Powel - Objectionable Content (Python Object Model)
    https://www.youtube.com/watch?v=AmHE0kZhLIQ
2018
https://proglib.io/p/python-oop/