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我有代码来添加一个项目到库存和删除该项目从口述。它不能正常工作虽然。我有：

# functions to be called later in the code.
def instructions():
    directions = 'North, East, South, West'
    print('\n-------------------------------------------------')
    print(f'Enter a direction: go {directions} or')
    print('equip item: get \'item name\'')
    print('To exit, type \'quit\'.')
    print('-------------------------------------------------')

def player_status(rooms, current_room, inventory):
    print(f'\nYou are at {current_room}.')
    if 'item' in rooms[current_room]:
        print('There is a ' + rooms[current_room]['item'])
    else:
        print('There are no items here.')
    print('You have:', inventory)

# main game loop.
def main():
    inventory = []
    sorted_inv = sorted(inventory)

# a dictionary of rooms and items.
    rooms = {
        'your apartment': {'west': 'occult bookstore', 'south': 'McDally\'s Pub'},

        'occult bookstore': {'east': 'your apartment', 'item': 'skull'},

        'McDally\'s Pub': {'north': 'your apartment', 'east': 'Shedd Aquarium', 'south': 'Wrigley Field',
                           'item': 'energy potion'},

        'Wrigley Field': {'north': 'McDally\'s Pub', 'west': 'your office', 'item': "wizard\'s staff"},

        'your office': {'east': 'Wrigley Field', 'item': 'Faerie Queen'},

        'Shedd Aquarium': {'west': 'McDally\'s Pub', 'north': 'Field Museum of Natural History',
                           'item': 'enchanted duster'},

        'Field Museum of Natural History': {'south': 'Shedd Aquarium', 'north': 'Saint Mary of the Angels church',
                                            'item': 'blasting rod'},

        'Saint Mary of the Angels church': {'south': 'Field Museum of Natural History', 'item': 'shield bracelet'}
    }

# set the start room
    current_room = 'your apartment'

    while True:
# this set of if, elif statements establish win conditions. Still incomplete.
        if sorted_inv == ['blasting rod', 'enchanted duster', 'energy potion', 'shield bracelet', 'skull',
                          "wizard\'s staff"]:
            print('You\'ve got your stuff back. Time to see the Queen.')
        elif current_room == 'your office' and inventory != ['blasting rod', 'enchanted duster', 'energy potion',
                                                             'shield bracelet', 'skull', "wizard\'s staff"]:
            print('You were unprepared. The Queen tears you head off. Game over.')
            break
        elif current_room == 'your office' and sorted_inv == ['blasting rod', 'enchanted duster', 'energy potion',
                                                              'shield bracelet', 'skull', "wizard\'s staff"]:
            print('The Faerie Queen has terrorized your city for the last time.')
            break

        instructions()
        player_status(rooms, current_room, inventory)
        time.sleep(0.5)

        # sets up user command to move player between rooms.
        command = input('\nWhat do you want to do?\n> ').lower().strip()

        # if command is empty.
        if command.strip() == '':
            print('\nPlease enter a command.')
            time.sleep(0.5)

        elif command.lower().split()[0] == 'go':
            direction = command.lower().split(' ')[1]
            if direction in rooms[current_room]:
                current_room = rooms[current_room][direction]
                time.sleep(0.5)

            # if player inputs an invalid command.
            else:
                print('\nYou can\'t go that way!')
                time.sleep(1)

        # command to add item to inventory and remove it from dict.
        elif command.lower().split()[0] == 'get':
            obj = command.lower().split(maxsplit=1)[1]

            if obj not in rooms[current_room]['item']:
                print('you don\'t see that here.')
                time.sleep(1)

            elif obj in rooms[current_room]['item']:
                # current_room = rooms[current_room][obj]
                del rooms[current_room]['item']
                inventory.append(obj)
                time.sleep(0.5)

            # if player inputs an invalid command.
            else:
                print('\nYou don\'t see that here.')
                time.sleep(1)

        # a command to quit the game.
        elif command.lower() in ('q', 'quit'):
            time.sleep(0.5)
            print('\nThanks for playing.')
            break

        else:
            print('\nPlease enter a valid command.')
            time.sleep(1)

if __name__ == "__main__":
    main()

我希望，如果玩家犯了一个错误，并试图添加一个物品到库存，他们已经有或不是一个项目在该房间（或打字错误），代码将输出'You don 't see that here.'而不是崩溃。@上帝是一个：rooms是一个字典，其余代码引用它来进行移动和项目。@ Galo do Leste：我想我是在尝试考虑所有可能的输入，但逻辑上，除了is True和is False之外，不应该有其他输入。