>>> import types
>>> class Foo:
... def say(self):
... print("Foo say")
...
>>> class Bar:
... def say(self):
... print("Bar say")
...
>>> f = Foo()
>>> b = Bar()
>>> types.MethodType(f.say, b)()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: say() takes 1 positional argument but 2 were given
I am just wondering what were 2 arguments that I gave? I know one of them would be self, but what was the other one?
Of course, in this example, the correct way would be:
>>> types.MethodType(Foo.say, b)()
Foo say
But I am asking about the error of types.MethodType(f.say, b)(). I want to know why it complains
takes 1 positional argument but 2 were given