How to tell the difference between an iterator and an iterable?

Question

In Python the interface of an iterable is a subset of the iterator interface. This has the advantage that in many cases they can be treated in the same way. However, there is an

Answer 1

Because of Python's duck typing,

Any object is iterable if it defines the next() and __iter__() method returns itself.

If the object itself doesnt have the next() method, the __iter__() can return any object, that has a next() method

You could refer this question to see Iterability in Python