diamond_2.py

class Superclass:

    super_class_call = 0

    def class_call(self):
        self.super_class_call += 1
        print('I am Superclass')


class ClassA(Superclass):

    class_a_call = 0

    def class_call(self):
        Superclass.class_call(self)
        self.class_a_call += 1
        print('I am ClassA')


class ClassB(Superclass):

    class_b_call = 0

    def class_call(self):
        Superclass.class_call(self)
        self.class_b_call += 1
        print('I am ClassB')


class ClassC(ClassA, ClassB):

    class_c_call = 0

    def class_call(self):
        ClassA.class_call(self)
        ClassB.class_call(self)
        self.class_c_call += 1
        print('I am ClassC')


obj_c = ClassC()

obj_c.class_call()

print(
    obj_c.super_class_call,
    obj_c.class_a_call,
    obj_c.class_b_call,
    obj_c.class_c_call
)