1 salary = input("Input your salary:")
2 if salary.isdigit():
3 salary = int(salary)
4 else:
5 exit("Invaild data type")
6 welcome_msg = "Welcome to Liangml shopping mall".center(50,"-")
7 print(welcome_msg)
8 exit_flag = False
9 product_list = [
10 ("Iphone",5888),
11 ("Mac book",8888),
12 ("Mac Air",12345),
13 ("book",20),
14 ("Dell",12345),
15 ("Coffe",10)]
16 shop_car = []
17 while not exit_flag:
18 #for product_item in product_list:
19 # p_name,p_price = product_item
20 print("product list".center(50,"-"))
21 for item in enumerate(product_list):
22 index = item[0]
23 p_name = item[1][0]
24 p_price = item [1][1]
25 print(index,".",p_name,p_price)
26 user_choice = input("[q=quit,c=check]What do you wang to buy?:")
27 if user_choice.isdigit():#肯定是选商品
28 user_choice = int(user_choice)
29 if user_choice < len(product_list):
30 p_item = product_list[user_choice]
31 if p_item[1] <= salary:#买的起
32 shop_car.append(p_item)#放入购物车
33 salary -= p_item[1]#扣钱
34 print("Added [%s] into shop car,you current balance is [%s]"%
35 (p_item,salary))
36 else:
37 print("You balance is [%s],cannot afford this...."%salary)
38 else:
39 if user_choice == "q" or user_choice == "quit":
40 print("purchased products as below".center(40,"*"))
41 for item in shop_car:
42 print(item)
43 print("END".center(40,"*"))
44 print("Your balace is [%s]"% salary)
45 exit_flag = True
