Python编程快速上手 实践项目5.6.2

列表到字典的函数，针对好玩游戏物品清单。
函数返回一个字典，表示更新过的物品清单。

inventory = {'rope':1,'torch':6,'gold coin':42,'dagger':1,'arrow':12}
dragonLoot = ['gold coin','dagger','gold coin','gold coin','ruby','ruby']

def addToInventory(inventory,addedItems):
    for i in addedItems:
        if i in inventory:
            inventory[i]+=1
        else:
            inventory[i]=1
    return inventory

update_inventory = addToInventory(inventory,dragonLoot)
print(update_inventory)

运行后结果

{'rope': 1, 'torch': 6, 'gold coin': 45, 'dagger': 2, 'arrow': 12, 'ruby': 1}