test.py

from itertools import izip

def main():

    original = izip(range(10), range(10))
    counts = [0]

    def counting(wrapped):
        for i in wrapped:
            counts[0] += 1
            yield i

    for i in counting(original):
        print(i)

    print(counts[0])

main()

from itertools import izip

class Counter:

    def __init__(self, iterator):
        self.count = 0
        self.iterator = iterator

    def __iter__(self):
        return self

    def next(self):
        result = next(self.iterator)
        self.count += 1
        return result


def main():

    original = izip(range(10), range(10))

    counter = Counter(original)
    for i in counter:
        print(i)

    print(counter.count)

main()