python编程快速上手第五章实践项目参考code

代码如下：

def displayInventory(inventory):  #显示字典函数
    item_total = 0
    for k, v in inventory.items():  #把键值对取出赋给变量并遍历
        print(str(v) + ' ' + k)
        item_total += v
    print('Total number of items: ' + str(item_total))

def addToInventory(inventory, addedItems):  
    for item in addedItems:
        inventory.setdefault(item, 0) #这是书上的
        inventory[item] += 1
    return inventory

inv = {'gold coin': 42, 'rope': 1}
dragonLoot = ['gold coin', 'dagger','gold coin', 'gold coin', 'ruby']
inv = addToInventory(inv,dragonLoot)
displayInventory(inv)

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45 gold coin
1 rope
1 dagger
1 ruby
Total number of items: 48

Github地址：https://github.com/wangjackc/python