3.exe

class Car:
    def __init__(self,make,model,year):
        self.make=make
        self.model=model
        self.year=year
        self.running=False
    def start(self):
        if not self.running:
            self.running=True
            print(self.year,self.make,self.model,"started.")
        else:
            print("Car is already running.")
    def stop(self):
        if self.running:
            self.running=False
            print(self.year,self.make,self.model,"stopped")
        else:
            print("Car is already stopped.")
car1=Car("toyota","corolla",2022)
car2=Car("honda","civic",2021)
car1.start()
car1.stop()
car2.start()
car2.stop()