如何将嵌套字典中的项目添加到另一个字典？

Question

我正在为我所在的班级开发基于文本的游戏。游戏的目标是在房间之间导航并从每个房间收集物品，然后将其添加到库存中，以击败最后一个房间。我的大部分代码输出正确，但是，当我尝试将项目添加到我的库存时，它没有做任何事情。库存是否也需要是字典？以及如何将嵌套字典“房间”中的物品添加到我的物品栏中，以便每次玩家获得物品时物品栏都会更新？

我的代码：

def show_instructions():
    print('Welcome to the Zombie Apocalypse Text Adventure')
    print('------------------------------------------------------------------ 
    ---')
    print('You are the only human to survive the zombie apocalypse.')
    print('You have found shelter in an abandoned hospital.')
    print('Each room in the hospital contains an important item.')
    print('There is a zombie hiding in the operating room.')
    print('------------------------------------------------------------------ 
    ---')
    print('Collect 6 items to defeat the zombie and win the game.')
    print('Move Commands: go North, go South, go East, go West, get item, 
    Exit')
    print('Add to Inventory: Get item')
    print('------------------------------------------------------------------ 
    ---')


def show_status(current_room, inventory): 
    print('You are currently in the {}.'.format(current_room))
    print('Your inventory contains: {}.'.format(inventory))

    print('------------------------------------------------------------------ 
    ---')


def main():  # define the main function of the game
    rooms = {
        'Reception Area': {'West': 'Bathroom', 'East': 'Supply Room', 
        'South': 'Waiting Room', 
        'North': 'Patient Room'},
        'Bathroom': {'East': 'Reception Area', 'item': 'First Aid Kit'},
        'Waiting Room': {'North': 'Reception Area', 'East': 'Exam Room', 
        'item': 'Book'},
        'Exam Room': {'West': 'Waiting Room', 'item': 'Medicine'},
        'Supply Room': {'North': 'Closet', 'West': 'Reception Area', 'item': 
        'Scalpel'},
        'Closet': {'South': 'Supply Room', 'item': 'Broom'},
        'Patient Room': {'South': 'Reception Area', 'East': 'Operating Room', 
        'item': 'Syringe'},
        'Operating Room': {'West': 'Patient Room', 'item': 'Zombie'}
       } 

    current_room = 'Reception Area'  # start player in the Reception Area

    show_instructions()  # show instructions to player

    inventory = {}

    while True:  # begin gameplay loop
        show_status(current_room, inventory)  # show player's current status

        move = input("Enter 'go North/South/East/West' to move, Get item, or 
        'Exit': ").split()[-1].capitalize()
        # list possible moves for player to enter
        if move == 'Exit':  # if player's move is Exit
            current_room = 'exit' 
            print('You are exiting the game. Thanks for playing!')
            break  
        elif move in rooms[current_room]: 
            current_room = rooms[current_room][move]
            if current_room == 'Operating Room': 
                if len(inventory) == 6: 
                    print('Congratulations! You have found all items and won 
                    the game!')  
                else:  
                    print('You do not have enough items to defeat the 
                    zombie... GAME OVER.') 
                    exit(0)  # game finishes
            elif current_room == 'Bathroom':  # if player reaches Bathroom
                print('The item here is {}.'.format(rooms['Bathroom'] 
                ['item']))   
               
                if move == 'Get item':  # if player gets item from room
                    print('Adding to inventory...')  # print message
                    inventory = inventory.append('First Aid Kit')
                    print('Your inventory contains: {}'.format(inventory))
           elif current_room == 'Waiting Room':  
                print('The item here is {}.'.format(rooms['Waiting Room'] 
                ['item']))
                if move == 'Get item':  # if player gets item from room
                    print('Adding to inventory...')
                    inventory = inventory.append('Book')
                    print('Your inventory contains: {}'.format(inventory))
           elif current_room == 'Exam Room':  # if player reaches Exam Room
                print('The item here is {}.'.format(rooms['Exam Room'] 
                ['item'])) 
                if move == 'Get item':  # if player gets item
                    print('Adding to inventory...')
                    inventory = inventory.append('Medicine')
                    print('Your inventory contains: {}'.format(inventory))
           elif current_room == 'Supply Room':
                print('The item here is {}.'.format(rooms['Supply Room'] 
                ['item'])) 
                if move == 'Get item':  # if player gets item
                    print('Adding to inventory...')
                    inventory = inventory.append('Scalpel') 
                    print('Your inventory contains: {}'.format(inventory)) 
           elif current_room == 'Closet':  # if player reaches Closet
                print('The item here is {}.'.format(rooms['Closet']['item']))  
                if move == 'Get item':  # if player gets item
                    print('Adding to inventory...')
                    inventory = inventory.append('Broom') 
                    print('Your inventory contains: {}'.format(inventory))  
           elif current_room == 'Patient Room': 
                print('The item here is {}.'.format(rooms['Patient Room'] 
                ['item'])) 
                if move == 'Get item':  # if player gets item
                    print('Adding to inventory...')
                    inventory = inventory.append('Syringe')
                    print('Your inventory contains: {}'.format(inventory))

           else:  # if player enters invalid move
                print("Invalid Move. There's no room to the {}".format(move))  # print error message


main()  # execute main function