for-loop-anatomy-8.py

class SomeIterable:
    def __iter__(self):
        print("SomeIterable.__iter__() has just been called\n")
        return SomeIterator()

class SomeIterator:
    def __next__(self):
        print("SomeIterator.__next__() has just been called")
        response = input("Stop iterating? [y/n] ")
        if response.lower() == "y":
            raise StopIteration


my_iterable = SomeIterable()

print("Ready to start the 'for' loop…\n")
for item in my_iterable:
    pass