gistfile1.txt

class Iterable(object):
    def __iter__(self):
        return self

    def __hasnext__(self):
        False

    def next(self):
        raise StopIteration()

class IterableSub(Iterable):
    pass


def do_iter(r):
    for i in r:
        pass

f = 0
while f < 10000:
    f += 1
    do_iter(Iterable())
    do_iter(IterableSub())