如何从pickle文件加载对象而不从外部范围隐藏名称？

如何解决如何从pickle文件加载对象而不从外部范围隐藏名称？

对编码很陌生，抱歉。

我正在编写一个小文本冒险，并尝试添加保存/加载功能。我已经包含了我为上下文放在一起的所有测试代码。希望不要太多。

我有一系列嵌套函数来访问保存和加载函数。 （在代码中：游戏>菜单>选择 3,4）。保存和加载给我带来了问题。

错误信息： 为了保存，我收到一个错误：在赋值之前引用了局部变量 'cubicles'。 对于加载，我收到一个错误：从外部作用域阴影名称“隔间”。

我怀疑问题是我在嵌套函数中创建了一个局部变量，即使我真正想做的是改变一个全局变量。解决这个问题的正确方法是在我加载的对象之前简单地编写“全局”吗？

很高兴在我编写代码的方式上接受任何其他有用的批评顺便说一句。谢谢。

（为简洁起见，编辑了代码 - 抱歉我不能把它缩短。）

    import pickle

class Room:
    def __init__(self,state,name,desc):
        self.state = state
        self.name = name
        self.desc = desc

    def enter(self):
        print("\n{}".format(self.name).upper())
        print(self.desc)
        print("Current room state: {}".format(self.state))


cubicles = Room(0,"your cubicle","It's a room full of cubicles. You can go to Marcia's Office or your Boss's Office.")
marciaOffice = Room(0,"Marcia's office","It's a small office where Marcia works. You can go to the cubicles or your Boss's Office.")
bossOffice = Room(0,"your Boss's office","This is where your boss works. You can go to the cubicles or Marcia's Office.")
currentRoom = cubicles

print("You are in your cubicle")


def game():
    global currentRoom

    def decisionTree():

            print("What do you do?")
            response = input(">").lower()
            if ("advance" and "all") in response:
                advanceAll(response)
            elif ("menu" or "pause") in response:
                menu()
            else:
                print("Invalid response. Try going to another room or advancing the room state.")

    def advanceAll(response):
        if ("advance" and "all") in response:
            cubicles.state = 3
            marciaOffice.state = 7
            bossOffice.state = 9
            print("All rooms advanced to 3,9,and 7.")
            game()

    def menu():
            print("MENU:")
            print("1. Return to Game")
            print("2. Quit")
            print("3. Save")
            print("4. Load")
            response = input(">")
            if "1" in response:
                game()
            elif "2" in response:
                quit()
            elif "3" in response:
                with open('save_game.pkl','wb') as save_game:
                    pickle.dump(cubicles,save_game)
                    pickle.dump(marciaOffice,save_game)
                    pickle.dump(bossOffice,save_game)
                    menu()
            elif "4" in response:
                with open('save_game.pkl','rb') as load_game:
                    cubicles = pickle.load(load_game)
                    marciaOffice = pickle.load(load_game)
                    bossOffice = pickle.load(load_game)
                    print("States are as follows:")
                    print("Cubicles:{}".format(cubicles.state))
                    print("Marcia's Office:{}".format(marciaOffice.state))
                    print("Boss's Office:{}".format(bossOffice.state))
                    menu()
            else:
                print("Unknown command")

    decisionTree()

game()