How to add a classmethod in Python dynamically

Question

I\'m using Python 3. I know about the @classmethod decorator. Also, I know that classmethods can be called from instances.

class HappyClass(object):
    @classme         


        

Answer 1

You can add a function to a class at any point, a practice known as monkey-patching:

class SadClass:
    pass

@classmethod
def say_dynamic(cls):
    print('hello')
SadClass.say_dynamic = say_dynamic

>>> SadClass.say_dynamic()
hello
>>> SadClass().say_dynamic()
hello

Note that you are using the classmethod decorator, but your function accepts no arguments, which indicates that it's designed to be a static method. Did you mean to use staticmethod instead?