Multiple inheritance of classes

1

class Person(object):
    def talk(self):
        print('talk')
    def run(self):
        print('person run')

class Car(object):
    def run(self):
        print('car run')

class PersonCarRobot(Person, Car):
    def fly(self):
        print('fly')

person_car_robot = PersonCarRobot()
person_car_robot.talk()
person_car_robot.run()
person_car_robot.fly()

Execution result of 1

talk
person run
fly

PersonCarRobot class It inherits both the Person class and the Car class. So It has methods for both classes.

here, Both the Person class and the Car class have a method called run.

in this case, It is a class PersonCarRobot (Person, Car) An image that inherits the Person class first and inherits what is not from the Car class. Therefore, the run method of Car class is not inherited.

If you replace it with class PersonCarRobot (Car, Person) Inherit the Car class first, and inherit what is not from the Person class. The run method of the Person class is not inherited.

2

class Person(object):
    def talk(self):
        print('talk')
    def run(self):
        print('person run')

class Car(object):
    def run(self):
        print('car run')

class PersonCarRobot(Car, Person):
    def fly(self):
        print('fly')

person_car_robot = PersonCarRobot()
person_car_robot.talk()
person_car_robot.run()
person_car_robot.fly()

Execution result of 2

talk
car run
fly