Python简易购物车实现

shopping_list = []
 product_list = [('iphone',5800),
 ('mac pro',9800),
 ('bike',800),
 ('watch',10600),
 ('coffee',31),
 ('python',120)]
 salary = input('请输入工资:')
 if salary.isdigit():
 salary = int(salary)
 while True:
 for index,item in enumerate(product_list):
 print(index,item)
 user_choice = input('选择要买嘛》》》》？：')
 if user_choice.isdigit():
 user_choice = int(user_choice)
 if user_choice < len(product_list) and user_choice >= 0:
 p_item = product_list[user_choice]
 if p_item[1] <= salary: #买得起
 shopping_list.append(p_item)
 salary -= p_item[1]
 print('添加:%s到购物车，余额为：\033[31;1m%s\033[0m' % (p_item,salary))
 else:
 print('\033[41;1m你的余额%s已不足\033[0m' % salary)
 else:
 print('商品不存在！')
 elif user_choice == 'q':
 print('--------- shopping list -------')
 for p in shopping_list:
 print(p)
 print('你的余额%s' % salary)
 exit()
 else:
 print('输入有误！')