What makes something iterable in python

Question

What makes something iterable in Python? ie. can loop over it with for

Is it possible for me to create an iterable class in Python? If so, how?

Answer 1

Any object with an __iter__() method is considered an iterable.

Additionally, any sequence (objects that have an __getitem__() method) could return an iterator. An iterator is an object with a __next__() method that returns the next object in the sequence and throws a StopIteration exception.