如何修复Python Turtle Terminator错误？

Question

我正在建立一个小型汽车模拟器游戏。它就像一个终端窗口，我输入start，它就正常启动了。我按下stop，它就会停止。不幸的是，当我再次启动它时，我遇到了这样的错误。

Traceback (most recent call last):

  File "C:\Users\****\OneDrive\New folder\Car Emulator.py", line 12, in <module>
    turtle.shape('square')
  File "<string>", line 5, in shape
turtle.Terminator

我不知道这是什么意思，因为我调用了turtle.bye()函数。尽管我搜索了所有的Stack Overflow论坛，就像那样。代码如下：

while True:
command = input(">").lower()
if command == "start":
    if engine == False:
        engine = True
        print("Car started.")
        t.shape('square')
    else:
        restart = input("Car already started. Restart? (Y) Yes (N) No ")
        if restart.upper == "Y":
            engine = False
            t.bye()
            engine = True
            t.shape('turtle')
            print("Car Restarted.")
elif command == "stop":
    if engine == True:
        engine = False
        t.bye()
        print("Car stopped.")
    else:
        print("Car already stopped.")
elif command == "help":
    print('''
    start - start the car
    stop - stop the car
    quit - exit
    ''')
elif command == "quit":

请谁给我解释一下

Answer 1

while True:
    command = input(">").lower()
    if command == "start":
        if engine == False:
            engine = True
            print("Car started.")
            #t.shape('square')
        else:
            restart = input("Car already started. Restart? (Y) Yes (N) No ")
            if restart.upper == "Y":
                engine = False
               # t.bye()
                engine = True
                #t.shape('turtle')
                print("Car Restarted.")
    elif command == "stop":
        if engine == True:
            engine = False
            #t.bye()
            print("Car stopped.")
        else:
            print("Car already stopped.")
    elif command == "help":
        print('''
        start - start the car
        stop - stop the car
        quit - exit
        ''')
    elif command == "quit":

输出

[root@localhost ~]# python3 test.py
>start
Car started.
>stop
Car stopped.
>start
Car started.
>stop
Car stopped.
>stop
Car already stopped.
>start
Car started.
>start
Car already started. Restart? (Y) Yes (N)

检查你的while循环，如果你想在while循环中重复任何东西，它应该有一个正确的缩进。示例https://www.w3schools.com/python/python_while_loops.asp

注意:删除了部分代码以对其进行测试。