1. My iterator implementation. 2. Using the iterator in two ways.

MyIterator.py

"""
@Author: Sujayyendhiren Ramrarao Srinivasamurthi
@Description: My own iterator.
"""
class Myfib:
    """ Fibonacci class"""
    def __init__(self, max):
        self.max = max

    def __iter__(self):
        """ The iterator method implementation makes this class iterable"""
        self.a = 0
        self.b = 1
        return self

    def next(self):
        """Method that returns the next value in the sequence"""
        fib = self.a

        if fib > self.max:
            raise StopIteration

        self.a, self.b = self.b, self.a + self.b
        return fib


if __name__ == '__main__':

    for x in Myfib(1000):
        print x ,

    print ''
    iterVar = iter(Myfib(100))
    for x in iterVar:
        print x ,