韦大仙python--购物车

#!/usr/bin/env python

-- coding:utf-8 --

#username=lhl,password=123456 #auth:lhl

print("-------------欢迎登入xx购物广场------------") usename=input("请输入您的用户名:") pwd=input("请输入您的密码：") if usename=='lhl' and pwd=='123456': with open('info.txt','r',encoding='utf-8') as f,
open('price.txt','r',encoding='utf-8') as p: p=p.read() f=f.read() print('#################购物清单###############') print('%s'%f ,'剩余金额:%s'%p) product_list=[ ('iphone',5800), ('mac pro',9800), ('bike',800), ('watch',10600), ('coffee',31), ('python-book',85) ] shoping_list=[] salary=input("input your salary:") if salary.isdigit(): salary=int(salary) while True: for index,item in enumerate(product_list): print(index,item) user_choice=input("选择商品>>：") 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: shoping_list.append(p_item) salary-=p_item[1] print('添加 %s 到您的购物车,你的余额是：\033[0;31m%s\033[0m '%(p_item,salary)) else: print('你的余额还剩 \033[0;31m%s\033[0m 元,无法购买'%salary,'还差:\033[0;31m%s\033[0m元'%(p_item[1]-salary)) else: print("product code is not exits"%user_choice) elif user_choice=='q': print("---------shoping list--------------") for p in shoping_list: print(p) with open("info.txt",'a',encoding='utf-8') as f: f.write('商品：'+p[0]+'价格：') f.write(str(p[1])+'\n') print("您的余额是:\033[0;31m%s\033[0m "%salary) with open('price.txt','w',encoding='utf-8') as f: f.write(str(salary)) print("-------------欢迎再次光临-------------") exit() else: print("invalid option")