Harry Percival, famous by "Obey the Goat" also his new book "Cosmic Python" this guy is a genius at teaching :) both books available at the respective sites

https://www.obeythetestinggoat.com/pages/book.html#toc

http://www.cosmicpython.com/

If you feel that TDD is too much there is a book about pytest, tho never really focused on it.

Hope it helps,

PS: Ty Harry :)