Python 库存条件，因此我只能添加一次项目并赢得条件

我有两个小问题，首先我需要帮助以获得胜利的条件，在收集了所有的物品后，我应该去抚摸区域并获得输出“你打败了杀人狼，所以我希望你喜欢玩。”

除此之外

我有一个问题，我可以添加相同的项目到我的库存两次，这不应该发生，我应该得到一个输出消息说“你已经有这个项目”。 谁能帮我解决这个问题

这是我目前掌握的代码

def game_instructions():
    # print a main menu and the commands
    print("Killer Wolf Text Game")
    print("---" * 20)
    print("Collect 6 items to win the game, or be killed by the Wolf.")
    print("---" * 20)
    print('Move Commands: North , South , East , or West.')
    print("---" * 20)
    print("Add to Inventory: get 'item name'")
    print("---" * 20)


game_instructions()

rooms = {
    "Main fair ground": {'South': 'Food stand', 'North': 'Arcade', 'East': 'Corn field', 'West': 'Candy shop'},
    "Food stand": {'North': 'Main fair ground', 'East': 'Security', 'item': 'meat'},
    "Security": {'West': 'Food stand', 'item': 'armor'},
    "Arcade": {'South': 'Main fair ground', 'East': 'Gift shop', 'item': 'sword'},
    "Gift shop": {'West': 'Arcade', 'item': 'gloves'},
    "Candy shop": {'item': 'candy', 'East': 'Main fair ground'},
    "Corn field": {'West': 'Main fair ground', 'North': 'Petting area', 'item': 'repellent'},
    "Petting area": {'South': 'Corn field', 'item': 'Killer Wolf'}
}





current_room = 'Main fair ground'  # starts player in the Main fair ground
inventory = []  # Adds an inventory


def get_new_room(current_room, direction):
    new_room = None
    for i in rooms:  # starts loop
        if i == current_room:  # if statement
            if direction in rooms[i]:  # if statement
                new_room = rooms[i][direction]  # Assigns new room.
            else:
                new_room = current_room #this assigns new room to current room if the mentioned direction is not valid
    return new_room  # returns new room



def get_item(current_room):
    if 'item' in rooms[current_room]:  # if statement
        return rooms[current_room]['item']  # return statement
    else:
        return 'This room has no item!'  # return statement


while (current_room):  # gameplay loop
    print('You are in the {}'.format(current_room))  # tells player what room they are in.
    print('Inventory:', inventory)  # shows player their inventory
    item = get_item(current_room)  # defines item as get item
    print('You found the:', item)  # tells the player what item they have found
    if item == 'Killer Wolf' and len(inventory)<6:  # if statement
        print('NOM NOM, You did not collected all the necessary items to survive! The game has ended, I hope you '
              'enjoyed!')  # notifies player game has ended.
        break  # ends game
    direction = input('Enter direction you would like to move. >>')  # gets direction from player.
    direction = direction.capitalize()  # Capitalizes the players input to match what is in the dictionary.

    if (direction == 'North' or direction == 'South' or direction == 'East' or direction == 'West'):  # if statement
        new_room = get_new_room(current_room, direction)  # Calling function
        if new_room == current_room:  # if statement
            print('That is a wall not an exit. Try Again!')  # Print statement
        else:
            current_room = new_room  # declares current room as new room
    elif direction == str('get ' + item).capitalize():  # input statement to add item
        if 'item' in inventory:  # if statement
            print('You have already collected this item. Move to another room!')  # print statement
        else:
            inventory.append(item)  # adds item to inventory
    else:
        print('Not a valid direction!')  # Print statement
    if len(inventory) == 6:  # if statement
        print("Congratulations!! You have collected all the necessary items to defeat the killer wolf")

def game_指令（）：
#打印主菜单和命令
打印（“杀手狼文本游戏”）
打印（“--”*20）
打印（“收集6件物品以赢得游戏，或被狼杀死。”）
打印（“--”*20）
打印（'移动命令：北、南、东或西'）
打印（“--”*20）
打印（“添加到库存：获取‘项目名称’”）
打印（“--”*20）
游戏说明（）
房间={
“主要集市地”：{‘南’：‘食品摊’、‘北’：‘拱廊’、‘东’：‘玉米田’、‘西’：‘糖果店’}，
“食品摊”：{'North'：'Main fair ground'，'East'：'Security'，'item'：'meat'，
“安全”：{'West'：'Food stand'，'item'：'armor'}，
“拱廊”：{‘南’：‘主会场’、‘东’：‘礼品店’、‘物品’：‘剑’}，
“礼品店”：{'West'：'Arcade'，'item'：'手套'，
“糖果店”：{'item'：'Candy'，'East'：'Main fair ground'}，
“玉米田”：{'West'：'Main fair ground'，'North'：'Petting area'，'item'：'Distribut'}，
“宠物区”：{‘南’：‘玉米田’，‘物品’：‘杀手狼’}
}
当前_房间='Main fair ground'#在主游乐场启动玩家
inventory=[]#添加一个库存
def获取新房间（当前房间，方向）：
新房间=无
对于房间中的i:#开始循环
if i==当前_房间：#if语句
房间中的if方向[i]：#if语句
新建房间=房间[i][direction]#分配新房间。
其他：
new_room=current_room#如果所述方向无效，则将新房间分配给当前房间
返回新房间#返回新房间
def get_项目（当前_房间）：
房间[current_room]中的if“item”：#if语句
归还房间[当前房间]['item']#归还声明
其他：
return“这个房间没有物品！”#返回语句
while（当前游戏室）：#游戏循环
print（{}格式（当前房间））#告诉玩家他们在哪个房间。
打印（“库存：”，库存）#显示玩家的库存
item=get_item（当前_房间）#将item定义为get item
打印（“您找到：”，物品）#告诉玩家他们找到了什么物品
如果item='Killer Wolf'和len（inventory）下面是所有bug修复的代码：

def game_instructions():
    # print a main menu and the commands
    print("Killer Wolf Text Game")
    print("---" * 20)
    print("Collect 6 items to win the game, or be killed by the Wolf.")
    print("---" * 20)
    print('Move Commands: North , South , East , or West.')
    print("---" * 20)
    print("Add to Inventory: get 'item name'")
    print("---" * 20)


game_instructions()

rooms = {
    "Main fair ground": {'South': 'Food stand', 'North': 'Arcade', 'East': 'Corn field', 'West': 'Candy shop'},
    "Food stand": {'North': 'Main fair ground', 'East': 'Security', 'item': 'meat'},
    "Security": {'West': 'Food stand', 'item': 'armor'},
    "Arcade": {'South': 'Main fair ground', 'East': 'Gift shop', 'item': 'sword'},
    "Gift shop": {'West': 'Arcade', 'item': 'gloves'},
    "Candy shop": {'item': 'candy', 'East': 'Main fair ground'},
    "Corn field": {'West': 'Main fair ground', 'North': 'Petting area', 'item': 'repellent'},
    "Petting area": {'South': 'Corn field', 'item': 'Killer Wolf'}
}





current_room = 'Main fair ground'  # starts player in the Main fair ground
inventory = []  # Adds an inventory


def get_new_room(current_room, direction):
    new_room = None
    for i in rooms:  # starts loop
        if i == current_room:  # if statement
            if direction in rooms[i]:  # if statement
                new_room = rooms[i][direction]  # Assigns new room.
            else:
                new_room = current_room #this assigns new room to current room if the mentioned direction is not valid
    return new_room  # returns new room



def get_item(current_room):
    if 'item' in rooms[current_room]:  # if statement
        return rooms[current_room]['item']  # return statement
    else:
        return 'This room has no item!'  # return statement


while (current_room):  # gameplay loop
    print('You are in the {}'.format(current_room))  # tells player what room they are in.
    print('Inventory:', inventory)  # shows player their inventory
    item = get_item(current_room)  # defines item as get item
    print('You found the:', item)  # tells the player what item they have found
    if item == 'Killer Wolf':
        if len(inventory)<6:
            print('NOM NOM, You did not collected all the necessary items to survive! The game has ended, I hope you '
              'enjoyed!')  # notifies player game has ended.
            break 
        elif len(inventory)==6:
            print("You defeated the Killer Wolf so I hope you enjoyed playing")
            break
    direction = input('Enter direction you would like to move. >>')  # gets direction from player.
    direction = direction.capitalize()  # Capitalizes the players input to match what is in the dictionary.

    if (direction == 'North' or direction == 'South' or direction == 'East' or direction == 'West'):  # if statement
        new_room = get_new_room(current_room, direction)  # Calling function
        if new_room == current_room:  # if statement
            print('That is a wall not an exit. Try Again!')  # Print statement
        else:
            current_room = new_room  # declares current room as new room
    elif direction == str('get ' + item).capitalize():  # input statement to add item
        if item in inventory:  # if statement
            print('You have already collected this item. Move to another room!')  # print statement
        else:
            inventory.append(item)  # adds item to inventory
    else:
        print('Not a valid direction!')  # Print statement
    if len(inventory) == 6:  # if statement
        print("Congratulations!! You have collected all the necessary items to defeat the killer wolf")

def game_指令（）：
#打印主菜单和命令
打印（“杀手狼文本游戏”）
打印（“--”*20）
打印（“收集6件物品以赢得游戏，或被狼杀死。”）
打印（“--”*20）
打印（'移动命令：北、南、东或西'）
打印（“--”*20）
打印（“添加到库存：获取‘项目名称’”）
打印（“--”*20）
游戏说明（）
房间={
“主要集市地”：{‘南’：‘食品摊’、‘北’：‘拱廊’、‘东’：‘玉米田’、‘西’：‘糖果店’}，
“食品摊”：{'North'：'Main fair ground'，'East'：'Security'，'item'：'meat'，
“安全”：{'West'：'Food stand'，'item'：'armor'}，
“拱廊”：{‘南’：‘主会场’、‘东’：‘礼品店’、‘物品’：‘剑’}，
“礼品店”：{'West'：'Arcade'，'item'：'手套'，
“糖果店”：{'item'：'Candy'，'East'：'Main fair ground'}，
“玉米田”：{'West'：'Main fair ground'，'North'：'Petting area'，'item'：'Distribut'}，
“宠物区”：{‘南’：‘玉米田’，‘物品’：‘杀手狼’}
}
当前_房间='Main fair ground'#在主游乐场启动玩家
inventory=[]#添加一个库存
def获取新房间（当前房间，方向）：
新房间=无
对于房间中的i:#开始循环
if i==当前_房间：#if语句
房间中的if方向[i]：#if语句
新建房间=房间[i][direction]#分配新房间。
其他：
new_room=current_room#如果所述方向无效，则将新房间分配给当前房间
返回新房间#返回新房间
def get_项目（当前_房间）：
房间[current_room]中的if“item”：#if语句
归还房间[当前房间]['item']#归还声明
其他：
return“这个房间没有物品！”#返回语句
while（当前游戏室）：#游戏循环
print（{}格式（当前房间））#告诉玩家他们在哪个房间。
打印（“库存：”，库存）#显示玩家的库存
item=get_item（当前_房间）#将item定义为get item
打印（“您找到：”，物品）#告诉玩家他们找到了什么物品
如果项目==‘杀手狼’：
如果你不删除同一个问题并重复10次，你可能会得到答案。