The "intro to py5 and python tutorials" have coding challenges at the end of each of them, but there is no answer key. Would you like to help us contributing with this educational materials?
I want to see absolutely no sensible and practical advice here. What programming language should I start vaguely and in a chill way teaching myself if I just want to experience something fun or elegant or interesting in and of itself, assuming I have no goal for using it to do anything really (outside of learning)