How to use switch in Python?

To implement a switch structure in Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-

switch = {
    'add': lambda x, y: x + y,
    'sub': lambda x, y: x - y,
    'mul': lambda x, y: x * y,
    'div': lambda x, y: x / y,
}

if __name__ == '__main__':
    print(switch['add'](1, 8))
    print(switch['sub'](1, 8))
    print(switch['mul'](1, 8))
    print(switch['div'](1, 8))

9
-7
8
0.125