Python文本RPG-处理while循环和if语句的困难

房间列表非常大，问题出在函数中，所以我没有包含这部分代码。列表中的每个条目基本上是：

[room_description, # of room North, East, South, West]

问题是，每当我测试while循环和if语句以处理无效输入时，程序就会卡在while循环中，我不知道如何修复它

def room_movement():
    current_room = 0
    done = False
    print("")

while done is False:
    print(room_list[current_room][0])
    print("")
    direction = input("Which direction do you want to go?\n\n")
    direction = direction.lower()

    if direction == "north":
        next_room = room_list[current_room][1]
        if next_room is None:
            while next_room is None:
                print("When you try to move in that direction you are blocked by an invisible wall. Try again")
                direction = input("\n")
                if direction == "east":
                    next_room = room_list[current_room][2]
                if direction == "south":
                    next_room = room_list[current_room][3]
                if direction == "west":
                    next_room = room_list[current_room][4]
                else:
                    direction = input("That wasn't a valid direction... Try again.\n")
        else:
            current_room = next_room
            print(current_room)
        current_room = next_room
        print(current_room)

    elif direction == "east":
        next_room = room_list[current_room][2]
        if next_room is None:
            while next_room is None:
                print("When you try to move in that direction you are blocked by an invisible wall. Try again")
                direction = input("\n")
                if direction == "north":
                    next_room = room_list[current_room][1]
                if direction == "west":
                    next_room= room_list[current_room][4]
                if direction == "south":
                    next_room = room_list[current_room][3]
                else:
                    direction = input("That wasn't a valid direction... Try again.\n")
        else:
            current_room = next_room
            print(current_room)
        current_room = next_room
        print(current_room)

    elif direction == "south":
        next_room = room_list[current_room][3]
        if next_room is None:
            while next_room is None:
                print("When you try to move in that direction you are blocked by an invisible wall. Try again")
                direction = input("\n")
                if direction == "north":
                    next_room = room_list[current_room][1]
                if direction == "east":
                    next_room = room_list[current_room][2]
                if direction == "west":
                    next_room = room_list[current_room][4]
                else:
                    direction = input("That wasn't a valid direction... Try again.\n")
        else:
            current_room = next_room
            print(current_room)
        current_room = next_room
        print(current_room)

    elif direction == "west":
        next_room = room_list[current_room][4]
        if next_room is None:
            while next_room is None:
                print("When you try to move in that direction you are blocked by an invisible wall. Try again")
                direction = input("\n")
                if direction == "north":
                    next_room = room_list[current_room][1]
                if direction == "east":
                    next_room = room_list[current_room][2]
                if direction == "south":
                    next_room = room_list[current_room][3]
                else:
                    direction = input("That wasn't a valid direction... Try again.\n")
        else:
            current_room = next_room
            print(current_room)
        current_room = next_room
        print(current_room)
    else:
        while direction != "north" or "south" or "west" or "east":
            print("That command is beyond the system's intelligence. Try again")
            direction = input("\n")

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房间移动（）

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