购物车优化二

 1 #Author:Archer Zon
 2 import time
 3 product_list = [
 4     (‘iPhone X‘, 5800),
 5     (‘Mac Pro‘, 10800),
 6     (‘Bike‘, 800),
 7     (‘Coffe‘, 31),
 8     (‘iWatch‘, 9800),
 9     (‘Archerzon Python‘, 120),
10 ]
11 salary = input("\033[36;1mEnter your salary:\033[0m")
12 shopping_list = []
13 exit_flag = False
14 if salary.isdigit():
15     salary = int(salary)
16     while not exit_flag:
17         for index,item in enumerate(product_list):
18             print(index,item)
19         user_choice = input("选择你要购买的商品：")
20         if user_choice.isdigit():
21             user_choice = int(user_choice)
22             if user_choice < len(product_list) and user_choice >= 0:
23                 p_item = product_list[user_choice]
24                 if p_item[1] < salary:
25                     shopping_list.append(p_item)
26                     salary -= p_item[1]
27                     print("You have bought \033[31;1m%s\033[0m.Your current balance is \033[31;1m%s\033[0m."%(p_item[0],salary))
28                 else:
29                     print("余额不足，仅剩\033[31;1m%s\033[0m.请及时充值！"%salary)
30         elif user_choice == ‘q‘:
31             print("------shopping list------")
32             print("正在打印购买清单，请稍等...")
33             time.sleep(2)
34             for p in shopping_list:
35                 print(p)
36             print("Yout current balance is \033[31;1m%s\033[0m"%salary)
37             print("打印完毕，即将退出系统...")
38             time.sleep(2)
39             exit_flag = True
40         else:
41             print("\033[31;1mInvalid option!\033[0m")
42 elif salary == ‘q‘:
43     print("正在退出系统，请稍等...")
44     time.sleep(2)
45     pass