文本冒险游戏起始房间West Gate Entrance触发KeyError问题求助

1. 触发KeyError的核心原因 #

起始房间West Gate Entrance在items字典中没有对应的条目，代码执行到print("In this room you see a", items[state])时，会因找不到对应键抛出KeyError。

2. 其他隐藏问题 #

• 房间名称大小写不一致：rooms里的"library"是小写，而items里的键是"Library"，后续访问时也会触发KeyError
• 房间跳转指向错误：Great Hall的West方向指向"Start"，但rooms字典中不存在该房间，应改为"West Gate Entrance"

3. 修复后的完整代码 #

rooms = {
    "West Gate Entrance": {"East": "Great Hall"},
    "Great Hall": {
        "North": "Library",  # 修正为大写，与items中的键保持一致
        "South": "Solar",
        "East": "Kitchen",
        "West": "West Gate Entrance",  # 修正跳转目标
    },
    "Library": {"East": "Bed Chambers", "South": "Great Hall"},  # 修正为大写
    "Bed Chambers": {"West": "Library"},
    "Kitchen": {"West": "Great Hall", "North": "Lost Room"},
    "Lost Room": {"South": "Kitchen"},
    "Solar": {"North": "Great Hall", "East": "East Tower"},
}

items = {
    "West Gate Entrance": "Iron Key",  # 给起始房间添加对应物品
    "Great Hall": "Castle Map",
    "Library": "Sword",
    "Bed Chambers": "Lost Key",
    "Lost Room": "Heart Container",
    "Kitchen": "Potion",
    "Solar": "Shield",
    "East Tower": "Ghost Knight",
}

state = "West Gate Entrance"
inventory = []


def get_new_state(state, direction):
    new_state = state
    # 简化逻辑，直接通过字典访问替代循环，提升效率
    if direction in rooms.get(state, {}):
        new_state = rooms[state][direction]
    return new_state


while True:
    print("You are now in the ", state)
    if state == "East Tower":
        print("You have entered battle with the Ghost Knight!", end="")
        for i in range(50):
            print(".", end="", flush=True)
        print()
        if len(inventory) == 7:  # 新增起始房间物品后，总数变为7
            print("Congratulations! You have located all 7 items and slain the Ghost Knight")
        else:
            print("You have succumbed to your wounds...GAME OVER!")
        break

    print("In this room you see a", items[state])
    print("You now have", inventory)
    direction = input("Enter item you want OR direction to go OR exit to give up: ")
    
    if direction.lower() == items[state].lower():
        if items[state] not in inventory:
            inventory.append(items[state])
        continue
    
    direction = direction.capitalize()
    if direction == "Exit":
        exit(0)
    
    if direction in ["East", "West", "North", "South"]:
        new_state = get_new_state(state, direction)
        if new_state == state:
            print("There is no move in that direction!")  # 移除重复单词
        else:
            state = new_state
    else:
        print("Please input a valid direction!")

4. 额外优化点 #

• 简化get_new_state函数逻辑，直接通过字典访问替代循环
• 移除原代码中无意义的嵌套循环延迟，改用直接打印省略号
• 修正提示文本中的重复单词（"direction direction"）
• 调整胜利条件的物品数量，适配新增的起始房间物品

内容的提问来源于stack exchange，提问作者Nick Mercer