How to add a method to a class in code using python

Add methods to a class programmatically in python

class Greeter:
    pass


def create_greeting(name: str):
    def greeting_method(self):
        return print(f"Greetings {name}")

    greeting_method.__name__ = f"greetings{name}"
    return greeting_method


if __name__ == '__main__':

    for name in ["Mary", "John", "Joe"]:
        setattr(Greeter, f"greetings{name}", create_greeting(name))

    greeter = Greeter()
    greeter.greetingsMary()
    greeter.greetingsJohn()
    greeter.greetingsJoe()