买家 卖家 商品 金钱
1 # 把货物放在货架上
2 li = [
3 {'name':'苹果', 'price':1},
4 {'name':'香蕉', 'price':1},
5 {'name':'西瓜', 'price':10},
6 {'name':'橘子', 'price':0.5},
7 ]
8 shopping_car = {} # 建立一个空购物车
9 print('欢迎光临水果店')
10 money = input('让我看看你有多少钱:')
11 if money.isdigit() and int(money) > 0:
12 while 1:
13 for i,k in enumerate(li):
14 print('序号:{}\t商品:{}\t价格:{}'.format(i, k['name'], k['price']))
15 choose = input('请输入您要购买的商品序号:')
16 if choose.isdigit() and int(choose) < len(li):
17 num = input('您要购买的商品数量:')
18 if num.isdigit():
19 if int(money) > li[int(choose)]['price'] * int(num):
20 money = int(money) - li[int(choose)]['price'] * int(num)
21 if li[int(choose)]['name'] in shopping_car:
22 shopping_car[li[int(choose)]['name']] += int(num) # 若商品已经在购物车中, 则增加数量
23 else:
24 shopping_car[li[int(choose)]['name']] = int(num)
25 print('购物车中的商品有:{}\t\t您的余额为:{}'.format(shopping_car,money))
26 else:
27 print('余额不足')
28 break
29 else:
30 print('您输入的序号有误')
