URL is to a "Things I Learned" by Simon W, but the title comes from tweet by David Beazley: https://twitter.com/dabeaz/status/1466731368956809219 https://twitt

URL is to a "Things I Learned" by Simon W, but the title comes from tweet by David Beazley: https://twitter.com/dabeaz/status/1466731368956809219 https://twitter.com/dabeaz/status/1466731368956809219 Which is a warning that people shouldn't buy his new book if they want a deep dive on Metaprogramming: https://www.amazon.com/dp/0134173279/ https://www.amazon.com/dp/0134173279/ Simon does a nice job demonstrating how "the __init_subclass__ class method is called when the class itself is being constructed."