python之路之商城购物车
1.程序说明：Readme.txt
1.程序文件：storeapp_new.py userinfo.py
2.程序文件说明：storeapp_new.py-主程序 userinfo.py-存放字典数据
3.python版本：python-3.5.3
4.程序使用：将storeapp_new.py和userinfo.py放到同一目录下， python storeapp_new.py
5.程序解析：
（1）允许用户注册登陆认证
（2）允许用户初始化自己拥有的金钱
（3）允许用户使用序号购买商品
（4）用户结束购买时自动结算余额及打印这次购买的商品列表
（5）允许用户再次登陆并打印历史购买商品列表及余额
（6）允许用户再次购买商品，直到余额小于选择的商品价格
（7）不允许退货，购买前请三思和掂量一下自己的钱包
6.程序执行结果：请亲自动手执行或者查看我的博客
7.程序博客地址：http://www.cnblogs.com/chenjw-note/p/7724580.html
8.优化打印输出效果2.程序代码：storeapp_new.py
#!/usr/bin/env python
# _*_ coding: utf-8 _*_
# author：chenjianwen
# email：[email protected]
# update_time：2017-10-17 19:47
# blog_address：www.cnblogs.com/chenjw-note
# If this runs wrong, don't ask me, I don't know why;
# If this runs right, thank god, and I don't know why.
# Maybe the answer, my friend, is blowing in the wind.
def print_red(messages):
print('\033[1;35m %s \033[0m' %messages)
##绿色
def print_green(messages):
print('\033[1;32m %s \033[0m' %messages)
##黄色
def print_yellow(messages):
print('\033[1;33m %s \033[0m' %messages) import os,sys,time,json,getpass
#import Login_api_new as LA
import userinfo as UF commodity_list = [
['华为meta 10',6999],
['iphone X',9999],
['游戏主机',19999],
['曲面显示屏',2999],
['游戏本',7999],
['机械键盘',599]
] ##定义写入文件函数,下面函数2次调用
def write_into():
f = open('./userinfo.py', 'w', encoding='utf-8')
f.write('UserInfo = ')
json.dump(UF.UserInfo, f)
f.close()
'''如果字典是汉字，存到文本就是二进制字符，这种字符计算机认识就可以了
如果字典是英文，存到文件就是英文了
''' ##登陆程序函数
def LoginApi():
count = 0
while True:
select_info = input("你是否有注册过账号了? Please select Y/N:")
##用户注册信息
if select_info == 'N' or select_info == 'n':
print("开始注册用户信息：")
username = input("Please enter your username:")
password = input("Please enter your password:") ##此处暂时用明文密码，方便在pycharm调试
phone_number = input("Please enter your phon_number:")
UF.UserInfo[username] = {
"info":[
{
"username":"%s" %username,
"password":"%s" %password,
"phon_number":"%s" %phone_number,
"login_count":0
}
],
"money":[
{}
],
"already_get_commodity":[
{}
],
}
#print(UF.UserInfo)
write_into() ##用户登陆验证信息
elif select_info == 'Y' or select_info == 'y':
#count = 0
while True:
#print(userinfo)
print("开始登录验证信息：")
username = input("Please enter your username:")
password = input("Please enter your password:")
##第一次判断输入用户是否存在
if not username in UF.UserInfo:
print("没有该用户，请确认你的用户名！")
continue
#判断用户登陆失败的次数是否小于3
if UF.UserInfo[username]['info'][0]['login_count'] < 3:
##判断用户账号密码是否吻合
if username in UF.UserInfo and password == UF.UserInfo[username]['info'][0]['password']: ##【优化2次】用户及密码已经一一对应
print("welcom login {_username}".format(_username=username))
##登陆成功后将失败次数清零，便于下一次统计
UF.UserInfo[username]['info'][0]['login_count'] = 0
##返回username给后面函数调用
return username
#break
else:
#count += 1
##修改用户登陆失败的次数
UF.UserInfo[username]['info'][0]['login_count'] = UF.UserInfo[username]['info'][0]['login_count'] + 1
print('Check fail...Check again...')
print("您还有%s次登录机会" % (3 - UF.UserInfo[username]['info'][0]['login_count']))
continue
else:
print("重复登陆多次失败，请15分钟后再尝试登陆...")
time.sleep(15)
count = 0
continue
else:
print("您输入的内容错误! Please enter again...")
continue ##商城购物函数
def Get_commodity(username):
already_get_commodity = []
if UF.UserInfo[username]['money'][0]:
print("你的余额为：\033[1;32m %s元 \033[0m，你的购买历史如下：" % UF.UserInfo[username]['money'][0]['money'])
for i in UF.UserInfo[username]['already_get_commodity']:
if i:
print('# ',i['ID'], i['商品'], i['价格'])
print_yellow('购物历史清单End'.center(25,'#'))
while True:
if not UF.UserInfo[username]['money'][0]:
money = input("请输入你拥有的金额：")
if money.isdigit():
money = int(money)
UF.UserInfo[username]['money'][0]['money'] = '%s' % money
break
else:
print("请输入数字金额！")
continue
else:
break while True:
while True:
print(' ')
print_red('商品列表'.center(25,'#'))
print("# 序号 商品 价格")
##获取商品列表
for key,commodity in enumerate(commodity_list):
print('# ',key,commodity[0],commodity[1])
print(' ')
get_commodity = input("\033[1;35m请选择你购买商品的序号：\033[0m")
##得到商品序号
if get_commodity.isdigit() and int(get_commodity) < len(commodity_list):
get_commodity = int(get_commodity)
##判断商品价格是否大于用户金钱数
if commodity_list[get_commodity][1] <= int(UF.UserInfo[username]['money'][0]['money']):
##计算用户金钱数
real_money = int(UF.UserInfo[username]['money'][0]['money']) - int(commodity_list[get_commodity][1])
money = real_money
##把当前购买的商品信息写到已购买商品的信息字典
already_get_commodity.append(['%s' %get_commodity,'%s' %commodity_list[get_commodity][0],'%s' %commodity_list[get_commodity][1]])
#print(already_get_commodity)
print("购买商品\033[1;32m %s \033[0m成功，你余额为\033[1;32m %s元 \033[0m" %(commodity_list[get_commodity][0],money))
##追加总商品信息到字典
UF.UserInfo[username]['already_get_commodity'].append({"ID": "%s" %get_commodity, "商品": "%s" %commodity_list[get_commodity][0], "价格": "%s" %commodity_list[get_commodity][1]})
##修改用户信息剩余金钱
UF.UserInfo[username]['money'][0]['money'] = '%s' %money
#print(UF.UserInfo)
else:
print("你没有足够的金钱去购买\033[1;35m %s \033[0m，它的价格为\033[1;35m %s元 \033[0m,而你的余额为\033[1;35m %s元 \033[0m" %(commodity_list[get_commodity][0],commodity_list[get_commodity][1],UF.UserInfo[username]['money'][0]['money']))
print(' ')
per_select = input("请问是否继续购买商品\033[1;35my/n\033[0m:")
if per_select.startswith('y'):
continue
elif per_select.startswith('n'):
print(' ')
print("\033[1;32m你本次购买的商品如下：\033[0m")
print_red('商品列表'.center(25, '#'))
print("# 序号 商品 价格")
for already_getp in already_get_commodity:
print('# ',already_getp[0],already_getp[1],already_getp[2])
print("你的余额为：\033[1;32m %s元 \033[0m" %UF.UserInfo[username]['money'][0]['money'])
print_red('结算结束'.center(25, '#'))
##退出程序前，把所有信息写进json信息记录文件，以便下一次登陆提取
write_into()
return
else:
print("输入有错，请重新输入！")
continue if __name__ == '__main__':
username = LoginApi()
if True:
Get_commodity(username)
3.程序附件-数据库：userinfo.py
UserInfo = {"chenjianwen01": {"info": [{"phon_number": "", "password": "", "login_count": 0, "username": "chenjianwen01"}], "money": [{"money": ""}], "already_get_commodity": [{}, {"\u5546\u54c1": "iphone X", "\u4ef7\u683c": "", "ID": ""}, {"\u5546\u54c1": "\u6e38\u620f\u4e3b\u673a", "\u4ef7\u683c": "", "ID": ""}, {"\u5546\u54c1": "\u534e\u4e3ameta 10", "\u4ef7\u683c": "", "ID": ""}, {"\u5546\u54c1": "\u66f2\u9762\u663e\u793a\u5c4f", "\u4ef7\u683c": "", "ID": ""}]}, "chenjianwen03": {"info": [{"phon_number": "", "password": "root123456.", "login_count": 0, "username": "chenjianwen03"}], "money": [{"money": ""}], "already_get_commodity": [{}, {"ID": "", "\u4ef7\u683c": "", "\u5546\u54c1": "\u66f2\u9762\u663e\u793a\u5c4f"}, {"ID": "", "\u4ef7\u683c": "", "\u5546\u54c1": "\u6e38\u620f\u4e3b\u673a"}]}, "chenjianwen02": {"info": [{"phon_number": "", "password": "", "login_count": 0, "username": "chenjianwen02"}], "money": [{}], "already_get_commodity": [{}]}}4.程序执行输出
old: