Python 字典与列表使用实例

python-让繁琐工作自动化
# coding=utf-8
# 第五章练习题
# 定义函数
from collections import Counter
def displayInventory(inventory):
    print("Inventory:")
    item_total=0
    #for i in inventory.items():
     #   print(i)
    for k, i in inventory.items():
        print(str(i) + ' ' + k)
        item_total += i
    print("Total number of items:" + str(item_total))
def addToInventory(inventory,addedItems):
    setadd = set(addedItems)
    a={}
    for items in setadd:
        a.update({items:addedItems.count(items)})
    a,inventory=Counter(a),Counter(inventory)
    inventory1=dict(a+inventory)
    return inventory1
if __name__=="__main__":
    # stuff={'torch':2,'role':4}
    # displayInventory(stuff)
    inv={'gold coin':42,'rope':1}
    dragonLoot=['gold coin','dagger','gold coin','gold coin','ruby']
    inv=addToInventory(inv,dragonLoot)
    displayInventory(inv)

运行结果

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