Fibonacci Numbers | A Helpful Line-by-Line Code Tutorial

def main():
    count = int(raw_input("How many numbers do you want to print?"))
    if count == 0:
        print "No Numbers Printed"
    else:
        a = 0
        b = 1
        print a,
        if count > 1:
            print b,
            while count > 2:
                c = a + b
                print c,
                a = b
                b = c
                count -= 1
if __name__ == "__main__":
    main()