Define a class method in Python that can work as a decorator for other methods.

method_as_decorator.py

#!/usr/bin/env python3


class A:
    def dec(func):
        def wrapper(self, *args, **kwargs):
            print("Pre")
            func(self, *args, **kwargs)
            print("Post")
        return wrapper

    @dec
    def hello(self, name="world"):
        print(f"Hello {name}")


a = A()
a.hello()
a.hello("rabbit")