Python编程快速上手笔记 5.6.2列表到字典的函数，针对好玩游戏物品清单

• 5.6.2 列表到字典的函数，针对好玩游戏物品清单

5.6.2 列表到字典的函数，针对好玩游戏物品清单

做这题的时候竟然报错 AttributeError: ‘NoneType’ object has no attribute ‘items’
然后检查了下，发现inv 变成了 None
解决方案：
函数最后用return

def addToInventory(inventory, addedItems):
for i in range(len(addedItems)):
print(f"第{i + 1}个统计：{addedItems[i]}")
for k in list(inventory.keys()):
if addedItems[i] == k:
inventory[k] += 1
print(f"更新{k} = {inventory.get(k, 0)}")
else:
print(f"没找到{addedItems[i]}")
inventory.setdefault(addedItems[i], 1)
print(f"更新{addedItems[i]} = {inventory.get(addedItems[i], 1)}")
print("判断结束")
return(inventory)