The documentation for super() at https://docs.python.org/3.8/library/functions.html#super does not actually say what super() does. It only says "Return a proxy object that delegates method calls to a parent or sibling class of type" and then gives a bunch of use cases and examples.

If there is one place where we should define exactly what super() does (as opposed to give guidance on how to use it), the stdlib reference should be it.