Python文本游戏Get Item指令无法添加物品至Inventory问题求助

核心问题及修复点： #

1. 列表append方法调用错误
   原代码中收集物品时使用了inventory.append[current_room]["Item"]，这是语法错误——append是列表的方法，必须用括号调用而非方括号。正确写法应为：

   inventory.append(rooms[current_room]["Item"])
   

   这个错误被try-except块捕获，导致你看到的只是"Invalid Input"提示，而非实际错误信息。

2. Armory房间物品键名不一致
   所有房间的物品键都是'Item'，但Armory房间写成了'Items'（复数），导致该房间的Ray Gun无法被检测和收集，永远凑不齐6个物品。修改为：

   'Armory': {'South': 'Med Bay', 'Item': 'Ray Gun'},
   

3. 错误提示逻辑不合理
   当物品已在背包中时，原代码输出"Invalid Input"会误导用户，应改为提示物品已拥有：

   else:
       print(f"You already have the {item}!")
   

4. 冗余的异常捕获
   原代码的try-except捕获了所有异常，掩盖了真实问题。建议缩小捕获范围（比如只捕获KeyError），或在调试阶段暂时移除，方便定位问题。

修正后的完整代码： #

# Displays instructions
def show_instructions():
    print('Welcome to the Alien Invasion game')
    print('Aliens have invaded your ship!!')
    print('Collect all 6 items in order to defeat them!\n')
    print('Movement: go [direction](North, South, East, or West)')
    print('Get item: get [item name]')
    print('_____________________________________________________')


# Rooms
rooms = {
    'Cockpit': {'West': 'Engine Control Room'},
    'Engine Control Room': {'East': 'Cockpit', 'North': 'Canteen', 'Item': 'Flashlight'},
    'Canteen': {'North': 'Sleeping Quarters', 'South': 'Engine Control Room', 'East': 'Med Bay',
                'West': 'Command Center', 'Item': 'Energy Bar'},
    'Command Center': {'East': 'Canteen', 'Boss': 'Aliens'},
    'Sleeping Quarters': {'South': 'Canteen', 'East': 'Storage', 'Item': 'Space Suit'},
    'Armory': {'South': 'Med Bay', 'Item': 'Ray Gun'},
    'Storage': {'West': 'Sleeping Quarters', 'Item': 'Space Helmet'},
    'Med Bay': {'North': 'Armory', 'West': 'Canteen', 'Item': 'Stim Pack'},
}

# List for players inventory
inventory = []

# Tracks current room
current_room = 'Cockpit'

# Calls function
show_instructions()

# Loop to keep game going
while True:
    # Prints Status
    print(f"You are in the {current_room}\nInventory: {inventory}\n")
    # Item Detection
    if 'Item' in rooms[current_room]:
        nearby_item = rooms[current_room]['Item']

        if nearby_item not in inventory:
            print(f'There is a {nearby_item}')

    # Boss Detection
    if "Boss" in rooms[current_room]:
        # Lose Condition
        if len(inventory) < 6:
            print('ZAP ZAP ZAP\n YOU LOSE!!!')
            break
        # Win Condition
        else:
            print('CONGRATULATIONS!!\n YOU WIN!!')
            break

    # Player Input
    user_input = input('Enter your move: ')

    # Splitting Input
    next_move = user_input.split(' ')  # Splitting to check whether input is a direction or get item

    action = next_move[0].title()

    item = None
    direction = None
    if len(next_move) > 1:
        if action == "Get":
            item = ' '.join(next_move[1:]).title()
        elif action == "Go":
            direction = next_move[1].title()

    # Movement
    if action == "Go":
        if not direction:
            print("Invalid Input: Specify a direction.")
            continue
        try:
            current_room = rooms[current_room][direction]
            print(f"You went {direction}.")
            print('_________________')
        except KeyError:
            print("You can't go that way.")

    # Get Items
    elif action == "Get":
        if not item:
            print("Invalid Input: Specify an item name.")
            continue
        try:
            room_item = rooms[current_room]["Item"]
            if item == room_item:
                if item not in inventory:
                    inventory.append(room_item)
                    print(f"You got {item}")
                else:
                    print(f"You already have the {item}!")
            else:
                print(f"There is no {item} here.")
        except KeyError:
            print("There are no items to collect here.")

    # Exit Game
    elif action == "Exit":
        print("Thanks for playing!")
        break

    else:
        print("Invalid Input")

内容的提问来源于stack exchange，提问作者Charglie