Задачи по Python и машинному обучению

class A:

    def __init__(self, x=0):

        self.x = x

    def f(self):

        print(self.x)

a = A(2020)

f = a.f

print(f.__self__ is a, end=" ")

print(f.__func__ is f, end=" ")

print(f.__func__ is a.f, end=" ")

print(f.__func__ is A.f, end=" ")