我正在運行此代碼，當我將物品添加到庫存時，該物品出現在所有庫存類中，我在哪里出錯了？一旦我運行 Browse()，添加新庫存，向其中添加項目，當我創建新庫存時，第一個庫存中的項目默認出現在新庫存中。我該如何解決這個問題男孩和女孩？inventories = {}class Inventory: ##Class for new inventory    inventory = {}    items = {}    def __init__(self,name):        self.name = name    def add_item(self,item,price,amount):        if item in self.items:            return False        else:            self.items[item] = int(price)            self.inventory[item] = int(amount)            return True    def add_amount(self,item,amount):        self.inventory[item] += amount    def update_amount(self,item,amount):        self.inventory[item] = amount    def remove_amount(self,item,amount):        self.inventory[item] -= amount    def update_item_price(self,item,price):        self.items[item] = price    def inv_list(self): ##Print the class        print(self.name)        print("\nItem:          Price:        Amount:\n")        for item in self.inventory:            print(f"{item}\t\t{self.items[item]}\t\t{self.inventory[item]}")def new_inventory(): ##MAkes a new inventory class and stores in inventories{}    global inventories    while True:        answer = input("What would you like to call your new Inventory?")        if answer in inventories:            print("Name already taken")            continue        inventories[answer] = Inventory(answer)        print("Inventory created")        update(answer)        break