#author:yangxiao '''
购物车需求 用户入口： 1.商品信息存在文件里 2.已购商品，余额记录。第一次启动程序时需要记录工资，第二次启动程序时谈出上次余额 3.允许用户根据商品编号购买商品 4.用户选择商品后，检测是否够，够就直接扣款，不够就提醒 5.可随时退出，退出时，打印移购买商品和余额 商家入口： 1.可以添加商品，修改商品价格 ''' import os,sys
def user_shopping(): while True: user_salary = input('请输入你的充值金额：') if user_salary.isdigit(): user_salary = int(user_salary) user_shop_file.write(login_name + '\t') user_shop_file.write(str(user_salary) + '\n') for item in product_lists: print(product_lists.index(item),item) p_index = product_lists.index(item) while True: user_choice = input('请输入你要选择的商品：') if user_choice.isdigit(): user_choice = int(user_choice) if user_choice <= p_index or user_choice >= 0: p_item = product_lists[user_choice] p_item[1] = int(p_item[1]) if user_salary >= p_item[1]: user_salary -= p_item[1] global shop_lists shop_lists.append(p_item) user_shop_file.seek(0) user_shop_file.write(login_name + '\t') user_shop_file.write(str(user_salary) + '\n') print('商品%s已加入购物车，您还剩%s钱'%(p_item[0],user_salary))
else:
print('您的金额不错，请去充值')
print('您已购得'.center(30,'*'))
print(shop_lists)
sys.exit()
else:
print('请输入范围内的商品：')
elif user_choice == 'q':
sys.exit('退出程序')
else:('其输入正确的商品编号')
else:
print('请输入正确的格式')
def user_top(): while True: user_salary = input('请输入你要充值的金额：') if user_salary.isdigit(): user_salary = int(user_salary) user_salary += int(shop[1]) user_shop_file.seek(0) user_shop_file.write(login_name + '\t') user_shop_file.write(str(user_salary) + '\n') for item in product_lists: print(product_lists.index(item),item) p_index = product_lists.index(item) while True: user_choice = input('请输入你要购买的商品：') user_choice = int(user_choice) if user_choice <= p_index or user_choice >= p_index: p_item = product_lists[user_choice] p_item[1] = int(p_item[1]) if p_item[1] <= user_salary: user_salary -= p_item[1] global shop_lists shop_lists.append(p_item) user_shop_file.seek(0) user_shop_file.write(login_name + '\t') user_shop_file.write(str(user_salary) + '\n') print('商品%s已加入购物车，您还剩%s钱'%(p_item[0],user_salary))
else:
print('您的金额不错，请去充值')
print('您已购得'.center(30,'*'))
print(shop_lists)
sys.exit()
else:
print('请输入正确的商品范围')
else:
print('请输入争取的格式的格式')
user_name = '' shop_lists = [] product_lists = [] def product_shop(): user_product_list_file = open('product_file.txt','r+',encoding ='UTF-8') product_list_item = user_product_list_file.readlines() for i in product_list_item: i = eval（i) product_lists.append(i)
product_shop() print(product_lists) user_shop_file =open('user_shop_file.txt','r+') user_shop_list =user_shop_file.readlines() for i in user_shop_list: shop = i.split() # print(i) if len(user_shop_list) == 0: login_name = input('请输入用户名：') user_info_file = open('user_info_file.txt','r+') user_info_list = user_info_file.readlines() for a in user_info_list: a = a.split() if login_name in a: while True: login_pwd = input('请输入密码') if login_pwd == a[1]: print('欢迎进入购物商城') user_shopping() else: print('你输入的密码不争取')
else:
sys.exit('用户名不存在')
else: login_name = input('请输入用户名：') user_info_file = open('user_info_file.txt','r+') user_info_list = user_info_file.readlines() for a in user_info_list: a = a.split() if login_name in a: while True: login_pwd = input('请输入密码') if login_pwd == a[1]: print('欢迎进入购物商城') user_top()
