购物车

 1 product_list=[
 2     ("iphone",5000),
 3     ("Mac Pro",9800),
 4     ("Bike",800),
 5     ("Watch",10600),
 6     ("Coffee",31),
 7     ("Alex Python",120),
 8 ]
 9 
10 salary=input("Input your salary:")
11 shopping_list=[]
12 if salary.isdigit():
13     salary=int(salary)
14     while True:
15         for index,item in enumerate(product_list):
16             print(index,item)
17         user_choice=input("选择要买啥?>>>:")
18         if user_choice.isdigit():
19             user_choice=int(user_choice)
20             if user_choice<len(product_list) and user_choice>=0:
21                 p_item=product_list[user_choice]
22                 if p_item[1]<=salary:  #买的起
23                     shopping_list.append(p_item)
24                     salary-=p_item[1]
25                     print(f"\033[31;1m Added {p_item} into shopping cart,your current balance is {salary}.\033[0m")
26 
27                 else:
28                     print(f"\033[41;1m你的余额只剩{salary}啦，还买个毛线\033[0m")
29 
30             else:
31                 print(f"product code {user_choice} is not exist.")
32 
33         elif user_choice==‘q‘:
34             print("---------shopping list------------")
35             for p in shopping_list:
36                 print(p)
37             print(f"Your current balance is {salary}.")
38             break
39         else:
40             print("invalid option")
41 else:
42     print("Salary invalid")