How to toggle a value in Python

Question

What is the most efficient way to toggle between 0 and 1?

Answer 1

Using exception handler

>>> def toogle(x):
...     try:
...         return x/x-x/x
...     except  ZeroDivisionError:
...         return 1
... 
>>> x=0
>>> x=toogle(x)
>>> x
1
>>> x=toogle(x)
>>> x
0
>>> x=toogle(x)
>>> x
1
>>> x=toogle(x)
>>> x
0

Ok, I'm the worst:

import math
import sys

d={1:0,0:1}
l=[1,0]

def exception_approach(x):
    try:
        return x/x-x/x
    except  ZeroDivisionError:
        return 1

def cosinus_approach(x):
    return abs( int( math.cos( x * 0.5 * math.pi  ) ) )

def module_approach(x):
    return  (x + 1)  % 2

def subs_approach(x):
    return  x - 1

def if_approach(x):
    return 0 if x == 1 else 1

def list_approach(x):
    global l
    return l[x]

def dict_approach(x):
    global d
    return d[x]

def xor_approach(x):
    return x^1

def not_approach(x):
    b=bool(x)
    p=not b
    return int(p)

funcs=[ exception_approach, cosinus_approach, dict_approach, module_approach, subs_approach, if_approach, list_approach, xor_approach, not_approach ]

f=funcs[int(sys.argv[1])]
print "\n\n\n", f.func_name
x=0
for _ in range(0,100000000):
    x=f(x)