Simple Fabonocci Sequence Creator

fabonocci.py

def F():
    a,b = 0,1
    yield a
    yield b
    while True:
        a, b = b, a + b
        yield b


def F2():
	a, b = 0, 1
	yield a
	while 1:
		a,b = b, a+b
		yield b


import time
for a in F():
	print "{}\n".format(a)
	time.sleep(1)