Extension methods in Python

Question

Does Python have extension methods like C#? Is it possible to call a method like:

MyRandomMethod()

on existing types like int?

Answer 1

You can add whatever methods you like on class objects defined in Python code (AKA monkey patching):

>>> class A(object):
>>>     pass


>>> def stuff(self):
>>>     print self

>>> A.test = stuff
>>> A().test()

This does not work on builtin types, because their __dict__ is not writable (it's a dictproxy).

So no, there is no "real" extension method mechanism in Python.