Simpler Fibonacci Iterator

fib.py

class FibonacciIterator(object):
    def __init__(self):
        self.data = [0, 1]
    def next(self):
        self.data.append(sum(self.data))
        return self.data.pop(0)

class Fibonacci(object):
    def __iter__(self):
        return FibonacciIterator()

if __name__ == '__main__':
    import itertools
    for value in itertools.takewhile(lambda x: x < 50, Fibonacci()):
        print value