Python:循环条件进一步联系

有一个汽车，输入help（无论大小写），会弹出

start - to start the car
stop - to stop the car
quit - to exit

输入start

Car started..Ready to go

输入stop

Car stopped

输入quit 会结束程序

输入其他

I don't understand that...

有验证汽车是否启动，或者已经停止

init = ""
t = 0
while init != "quit":
    init = input(">").lower()
    if init != "start" and init != "stop" and init != "help":
        print(" I don't understand that...")
    elif init == "start":
        if t:
            print("car has started.")
        else:
            t = 1
            print("Car started..Ready to go!")
    elif init == "stop":
        if t:
            print("Car stopped.")
            t = 0
        else:
            print("car has not started.")
    else:
        print(
            """start - to start the car
stop - to stop the car
quit - to exit"""
        )