from itertools import cycle
myIterator = cycle(range(2))

myIterator.next()   # or next(myIterator) which works in Python 3.x. Yields 0
myIterator.next()   # or next(myIterator) which works in Python 3.x. Yields 1
# etc.

from itertools import cycle
mySmallSquareIterator = cycle(i*i for i in range(10))
# Will yield 0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 0, 1, 4, ...

>>> def alternate():
...   while True:
...     yield 0
...     yield 1
...
>>>
>>> alternator = alternate()
>>>
>>> alternator.next()
0
>>> alternator.next()
1
>>> alternator.next()
0

import itertools
myfunc = itertools.cycle([0,1]).next

myfunc()    # -> returns 0
myfunc()    # -> returns 1
myfunc()    # -> returns 0
myfunc()    # -> returns 1

count = 0  # initialize count once

count = (count + 1) % 2

count = 0

for i in range(5):
     count = (count + 1) % 2
     print count

1
0
1
0
1

var = not var

def alternate():
    alternate.x=not alternate.x
    return alternate.x

alternate.x=True  #The first call to alternate will return False (0)

mylist=[5,3]
print(mylist[alternate()])  #5
print(mylist[alternate()])  #3
print(mylist[alternate()])  #5

from itertools import cycle

alternator = cycle((0,1))
next(alternator) # yields 0
next(alternator) # yields 1
next(alternator) # yields 0
next(alternator) # yields 1
#... forever

count = 1
count = count ^ 1 # count is now 0
count = count ^ 1 # count is now 1

var = 1
var = 1 - var

value = (1, 0)[value]

toggle_val = 1

toggle_val = (1,0)[toggle_val]

a, b = map(int, raw_input("Enter both number: ").split())
flag = input("Enter the first value: ")
length = input("Enter Number of iterations: ")
for i in range(length):
    print flag
    if flag == a:
        flag = b;
    else:
        flag = a

mode=["mouse",""].remove(mode)[0]

value=["option1","option2"].remove(value)[0]