My apologies for the broken link: https://en.citizendium.org/wiki/Python_(programming_language) (the underlying URL was missing the terminal paren) Thanks for the feedback Wes. The Github repo is less a textbook than a “tensegrity” of web pages held together without a specific serial chronology. The tour guide teacher is responsible for taking students on useful tours, packed with information. I go in there like the guy with the biggest flashlight on a cave tour (a whole maze of caves). Kirby