class Father:
    def skill(self):
        print("Driving")

class Mother:
    def skill(self):
        print("Cooking")

class Child(Father, Mother):
    pass

child = Child()
child.skill()

Driving

class GrandParent:
    def display(self):
        print("GrandParent Display")

class Parent(GrandParent):
    pass

class Child(Parent):
    pass

child = Child()
child.display()

GrandParent Display