为什么遍历python列表中的字典,只会遍历第一个字典
#返回列表
def count_fare(buy_list):
sum=0
for items in buy_list:
sum += items["price"]*items["count"]
return sum
if name=="main":
fare=count_fare([{"name":"洗发露","price":35.00,"count":1},{"name":"雪莲","price":0.50,"count":50},{"name":"酸奶","price":8.00,"count":5}])
print("一共花费"+str(fare)+"元")
35.0元
将列表中的物品消费求和
我猜你是把return sum写到for循环里面了,所以只循环了一次,函数就返回了
像这样写是没有问题的:
def count_fare(buy_list):
sum=0
for items in buy_list:
sum += items["price"]*items["count"]
return sum
直接上代码
def count_fare(buy_list):
sum=0
for items in buy_list:
sum += items["price"]*items["count"]
return sum
if name=="main":
fare=count_fare([{"name":"洗发露","price":35.00,"count":1},{"name":"雪莲","price":0.50,"count":50},{"name":"酸奶","price":8.00,"count":5}])
print("一共花费"+str(fare)+"元")
mark