13. OOP: First Look at Class and Object

class Car:
    wheels = "four"
    doors = 4
    working_engine = False

    engine_start_msg = "Engine has started"
    engine_stop_msg = "Engine has stopped"

    def __init__(self, brand: str = "", model: str = ""):
        self.brand = brand
        self.model = model

    def start_engine(self):
        self.working_engine = True
        print(self.engine_start_msg)

    def stop_engine(self):
        self.working_engine = False
        print(self.engine_stop_msg)


class ElectricCar(Car):

    engine_start_msg = "Electric motor has started"
    engine_stop_msg = "Electric motor has stopped"

    def __init__(self, battery_capacity: int, brand: str = "", model: str = ""):
        super().__init__(brand, model)
        self.battery_capacity = battery_capacity


my_car = Car()
some_car1 = Car("Ford", "Mustang")
some_car2 = Car(model="Camaro")
some_car1.start_engine()
some_car2.start_engine()

my_electric_car = ElectricCar(100, "Tesla", "Model 3")
my_electric_car.start_engine()

my_electric_car2 = ElectricCar(60, "Toyota", "Prius")
my_electric_car2.start_engine()
my_electric_car2.stop_engine()