1.优化购物程序，购买时允许用户选择购买多少件，
2.允许多用户登录，下一次登录后，继续按上次的余额继续购买 ,可以充值 （每个用户有独立的保存文件）
3.允许用户查看之前的购买记录（记录要显示商品购买时间）
4.商品列表分级展示，比如：
第一层菜单：
1.家电类
2.衣服类
3.手机类
4.车类
...
选择一个，车类，进入第2层
1。BMW X3 33333
2.Audi Q5 33333
3.Pasate 33335
4.Tesla Model_3 430000
5.Tesla Model S 888888
购物车：
1. 商品信息- 数量、单价、名称
2. 用户信息- 帐号、密码、余额
3. 用户可充值
4. 购物历史信息
5. 允许用户多次购买，每次可购买多件
6. 余额不足时进行提醒
7. 用户退出时 ，输出档次购物信息
8. 用户下次登陆时可查看购物历史
9. 商品列表分级显示
5.显示已购买商品时，如果有重复的商品，不打印多行，而是在一行展示，如
id p_name num total_price
1. TeslaModelS 2 3434343434
2. Coffe 2 60
3. Bike 1 700
###
Blog一定要写
readme一定要写
流程图 一定画
一定不要copy
会用到 文件 ，datetime模块，json
折磨啊，已经被搞晕，还有需要完善的地方。
#!/usr/bin/env python # -*-coding:utf-8-*- # __author__="Liudong" import json if __name__ == '__main__': # user_info={'root':[123,5000],'sys':[123,10000],'admin':[123,200000]} # json.dump(user_info, open('user_info.txt','w'))#把用户信息以user:pass:amount的格式写入文本文件 # purchase_log={'root':[['iphone7' ,2 ,'2016-6-10'],['西装',1 ,'2015-5-2']], # 'sys':[['乐视电视',1,'2016-9-20'] ,['华为',5,'2016-7-15']], # 'admin':[['乐视电视',1,'2016-8-10'] ,['运动服',3,'2016-10-10']] # } # json.dump(purchase_log,open('purchase_log.txt','w',encoding='utf-8')) shop_car = [] welcom_msg = 'Welcome to Shopping Home'.center(50, '-') print(welcom_msg) for i in range(3): username = input('Please input your username:[q=quit]') if username == 'q': exit() with open('user_info.txt', 'r', encoding='utf-8') as user_account: # 读取用户信息 user_info = json.load(user_account) # 用json读取文件，字典格式 for user_name in user_info.keys(): # 判断用户名是否存在 # print(user_info[user_name][0]) # print(user_name) # print(username) j = 0 while j < 3: # 给3次输入密码机会 password = input('Please input your password:') if password == str(user_info[user_name][0]): print('login successed! Have a happy shopping Time!') while True: print('#' * 50) print('1.查看购买记录 2.充值 3.查询余额 4.购物 5.查看购物车 [q:quit]') user_want = input('What do you do?') if user_want == 'q': exit() if user_want == '1': print('user %s purchase log list:'.center(50, '*') % user_name) with open('purchase_log.txt', 'r', encoding='utf-8') as purchase_log: # 读取购买记录文件 user_purchase_log = json.load(purchase_log) print(user_purchase_log[username]) if user_want == '2': print('*' * 50) charge_amount = input('please input amount you want to charge:') # user_info_amountw = json.load('user_info.txt', 'r') user_info[username][1] += int(charge_amount) # print(user_info) json.dump(user_info, open('user_info.txt', 'w')) print('charge successed!') if user_want == '3': print('*' * 50) print('your account is ￥%s' % user_info[user_name][1]) if user_want == '4': product_list = { '家电类': [('乐视电视', 7000), ('海尔冰箱', 5000), ('小天鹅洗衣机', 2000)], '衣服类': [('西装', 8000), ('休闲夹克', 2000), ('运动服', 800)], '手机类': [('Iphone7', 7000), ('小米Note', 2000), ('华为', 1000)], '车类': [('奔驰ML', 800000), ('特斯拉', 700000), ('奥迪Q7', 750000)]} class_list = [] # 获取序列号和字典key组成的列表 class2 = [] while True: print("Products list".center(50, '-')) for index, item in enumerate(product_list): # 打印序列号和类别 print(index, item) class_list = [index, item] # 将序列号和商品类别key保存成列表 class2.append(str(class_list[1])) # class2用于保存用户选择商品类key值 # print(class2) #存储类别用于后面选择对应类别 print('End'.center(50, '-')) class1_choice = input('choose class number 0-3 to enter:(q:quit)').strip() if class1_choice == '0': # 用户选择第一类商品 class_choice = product_list[class2[0]] # 根据商品类别和对应的下标号，获取商品列表 # print(class_choice) for item in enumerate(class_choice): # 从第1级类中，枚举各个商品 index = item[0] # print(item) p_name = item[1][0] p_price = item[1][1] print(index, '.', p_name, p_price) buy_item = input('What do you want to buy?:[q=quit,c=check]') if buy_item.isdigit(): # 肯定为选择商品 buy_item = int(buy_item) if buy_item < len(class_choice): # print(class1_choice) # print(class_list) p_item = [p_name[1]] # print(p_item) # print(user_info[user_name][1]) if p_price <= user_info[user_name][1]: # 买的起 shop_car.append(p_item) # 放入购物车 user_info[user_name][1] -= p_price # 扣钱 print( 'Added [%s] into your shop car,your current balance is ' ' 33[31;1m[%s] 33[0m' % (p_item, user_info[user_name][1])) # 字体加颜色 else: print('Your balance is [%s],cannot afford this product..' % user_info[user_name][1]) else: if class1_choice == 'q' or class1_choice == 'quit': print('purchased products as blew:'.center(40, '*')) for item in shop_car: print(item) print('END'.center(40, '*')) print('Your balance is [%s]' % user_info[user_name][1]) print('bye.') exit() elif class1_choice == 'c' or class1_choice == 'check': print('purchased products as blew:'.center(40, '*')) for item in shop_car: print(item) # 背景加颜色 print('Your balance is 33[41;1m[%s] 33[0m' % user_info[user_name][1]) if class1_choice == '1': # 用户选择第一类商品 class_choice = product_list[class2[0]] # 根据商品类别和对应的下标号，获取商品列表 # print(class_choice) for item in enumerate(class_choice): # 从第1级类中，枚举各个商品 index = item[0] # print(item) p_name = item[1][0] p_price = item[1][1] print(index, '.', p_name, p_price) buy_item = input('What do you want to buy?:[q=quit,c=check]') if buy_item.isdigit(): # 肯定为选择商品 buy_item = int(buy_item) if buy_item < len(class_choice): # print(class1_choice) # print(class_list) p_item = [p_name[1]] # print(p_item) # print(user_info[user_name][1]) if p_price <= user_info[user_name][1]: # 买的起 shop_car.append(p_item) # 放入购物车 user_info[user_name][1] -= p_price # 扣钱 print( 'Added [%s] into your shop car,your current balance is ' ' 33[31;1m[%s] 33[0m' % (p_item, user_info[user_name][1])) # 字体加颜色 else: print('Your balance is [%s],cannot afford this product..' % user_info[user_name][1]) else: if class1_choice == 'q' or class1_choice == 'quit': print('purchased products as blew:'.center(40, '*')) for item in shop_car: print(item) print('END'.center(40, '*')) print('Your balance is [%s]' % user_info[user_name][1]) print('bye.') exit() elif class1_choice == 'c' or class1_choice == 'check': print('purchased products as blew:'.center(40, '*')) for item in shop_car: print(item) # 背景加颜色 print('Your balance is 33[41;1m[%s] 33[0m' % user_info[user_name][1]) if class1_choice == '2': # 用户选择第一类商品 class_choice = product_list[class2[0]] # 根据商品类别和对应的下标号，获取商品列表 # print(class_choice) for item in enumerate(class_choice): # 从第1级类中，枚举各个商品 index = item[0] # print(item) p_name = item[1][0] p_price = item[1][1] print(index, '.', p_name, p_price) buy_item = input('What do you want to buy?:[q=quit,c=check]') if buy_item.isdigit(): # 肯定为选择商品 buy_item = int(buy_item) if buy_item < len(class_choice): # print(class1_choice) # print(class_list) p_item = [p_name[1]] # print(p_item) # print(user_info[user_name][1]) if p_price <= user_info[user_name][1]: # 买的起 shop_car.append(p_item) # 放入购物车 user_info[user_name][1] -= p_price # 扣钱 print( 'Added [%s] into your shop car,your current balance is ' ' 33[31;1m[%s] 33[0m' % (p_item, user_info[user_name][1])) # 字体加颜色 else: print('Your balance is [%s],cannot afford this product..' % user_info[user_name][1]) else: if class1_choice == 'q' or class1_choice == 'quit': print('purchased products as blew:'.center(40, '*')) for item in shop_car: print(item) print('END'.center(40, '*')) print('Your balance is [%s]' % user_info[user_name][1]) print('bye.') exit() elif class1_choice == 'c' or class1_choice == 'check': print('purchased products as blew:'.center(40, '*')) for item in shop_car: print(item) # 背景加颜色 print('Your balance is 33[41;1m[%s] 33[0m' % user_info[user_name][1]) if class1_choice == '3': # 用户选择第一类商品 class_choice = product_list[class2[0]] # 根据商品类别和对应的下标号，获取商品列表 # print(class_choice) for item in enumerate(class_choice): # 从第1级类中，枚举各个商品 index = item[0] # print(item) p_name = item[1][0] p_price = item[1][1] print(index, '.', p_name, p_price) buy_item = input('What do you want to buy?:[q=quit,c=check]') if buy_item.isdigit(): # 肯定为选择商品 buy_item = int(buy_item) if buy_item < len(class_choice): # print(class1_choice) # print(class_list) p_item = [p_name[1]] # print(p_item) # print(user_info[user_name][1]) if p_price <= user_info[user_name][1]: # 买的起 shop_car.append(p_item) # 放入购物车 user_info[user_name][1] -= p_price # 扣钱 print( 'Added [%s] into your shop car,your current balance is ' ' 33[31;1m[%s] 33[0m' % (p_item, user_info[user_name][1])) # 字体加颜色 else: print('Your balance is [%s],cannot afford this product..' % user_info[user_name][1]) else: if class1_choice == 'q' or class1_choice == 'quit': print('purchased products as blew:'.center(40, '*')) for item in shop_car: print(item) print('END'.center(40, '*')) print('Your balance is [%s]' % user_info[user_name][1]) print('bye.') exit() elif class1_choice == 'c' or class1_choice == 'check': print('purchased products as blew:'.center(40, '*')) for item in shop_car: print(item) # 背景加颜色 print('Your balance is 33[41;1m[%s] 33[0m' % user_info[user_name][1]) if user_want == '5': print(shop_car) else: print('Invalid username or password...') print('this is the %d time(s)' % (j + 1)) j += 1 else: print('Forget password? Please send a mail to Administrator,bye') user_account.close() exit()