How does `super` interacts with a class's `__mro__` attribute in multiple inheritance?

Question

Today, I read the official doc of super.
In which it mentioned multiple inheritance will be decided by the __mro__ attribute of a class.
So I did a bit

Answer 1

From chapt 32 of learning python:

each super call selects the method from a next class following it in the MRO ordering of the class of the self subject of a method call.

so for super(cls, instance)(isinstance(instance, cls) must be True), the method is selected from the next class in instance.__class__.__mro__ starting from instance.__class__.

for super(cls0, cls1)(issubclass(cls1, cls0) must be True), the method is selected from next class in cls1.__mro__ starting from cls0

in both cases, if the method is not implemented by the next class in the MRO chain, the search will skip ahead until it finds a class with the method defined.