day2

三级菜单：

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#user:Felix
#date:2016-10-19
#mail:wudonghang@wudonghang.com
#If you have questions or suggestions, please contact the author.
china_map ={
 "华南":{
  "广东":["广州市","佛山市","深圳市","东莞市"],
  "广西":["南宁市","柳州市","桂林市","北海市"],
  "海南":["海口市","三亚市","三沙市","儋州市"]
 },
 "华东":{
  "上海":["黄浦区","卢湾区","徐汇区","长宁区","普陀区"],
  "安徽":["合肥市","芜湖市","淮南市","马鞍山市"],
  "江苏":["南京市","无锡市","徐州市","常州市","苏州市"]
 },
 "华北":{
  "北京":["东城区","西城区","朝阳区","丰台区","石景山区","海淀区"],
  "山西":["太原市","大同市","阳泉市","长治市"],
  "河北":["石家庄市","唐山市","秦皇岛市","邢台市"]
 },
 "华中":{
  "湖北":["武汉市","黄石市","十堰市","十堰市"],
  "河南":["郑州市","开封市","洛阳市","平顶山市"],
  "湖南":["长沙市","株洲市","衡阳市","邵阳市"]
 },
 "西南":{
  "重庆":["万州区","涪陵区","渝中区","大渡口区"],
  "四川":["成都市","自贡市","攀枝花市","德阳市"],
  "贵州":["贵阳市","六盘水市","遵义市","安顺市"],
 },
 "特别行政区":{
  "香港":["屯门","弯仔","北角","西贡"],
  "澳门":["花地玛堂区","圣安多尼堂区","大堂区","望德堂区"],
 },
}
print("".center(50,"-"))
print("+            +".center(50))
print("+            +".center(50))
print("+   中华人民共和国查询系统   +".center(40))
print("+            +".center(50))
print("+            +".center(50))
print("".center(50,"-"))
print("大中华地区一级划分:")
while True:
    for i in china_map:
        print(i)
    print("".center(50,"-"))
    greater_china_name = input("请输入你要查看的中华地区名字 or 按q:Exit是退出整个程序:")
    if greater_china_name in china_map:
        gc_name = china_map[greater_china_name]
        province_name = gc_name.keys()
        while True:
            print("------------------包含的省名字二级:-----------------")
            for i in province_name:
                print(i)
            print("".center(50,"-"))
            sheng_name_input = input("请输入你要查看的省名字 or 按b:Back是返回上一级菜单;按q:Exit是退出整个程序:")
            if sheng_name_input in province_name:
                shi_name = china_map[greater_china_name][sheng_name_input]
                print("--------------包含的城市名三级:-------------------")
                for i in shi_name:
                    print(i)
                else:
                    print("".center(50,"-"))
                    shi_name_input = input("按b:Back是返回上一级菜单;按q:Exit是退出整个程序:")
                    if shi_name_input == "b":
                        continue
                    elif shi_name_input == "q":
                        exit("退出中华人民共和国查询系统".center(50,"-"))
                    else:
                        print("输入的指令不对请重新输入!")
            elif sheng_name_input == "b":
                break
            elif sheng_name_input == "q":
                exit("退出中华人民共和国查询系统".center(50,"-"))
            else:
                print("输入的省名字不对请重新输入!")
    elif greater_china_name == "q":
        exit("退出中华人民共和国查询系统".center(50,"-"))
    else:
        print("输入的地区名字不对请重新输入!")

三级菜单文艺青年版

menu = {
    '北京':{
        '海淀':{
            '五道口':{
                'soho':{},
                '网易':{},
                'google':{}
            },
            '中关村':{
                '爱奇艺':{},
                '汽车之家':{},
                'youku':{},
            },
            '上地':{
                '百度':{},
            },
        },
        '昌平':{
            '沙河':{
                '老男孩':{},
                '北航':{},
            },
            '天通苑':{},
            '回龙观':{},
        },
        '朝阳':{},
        '东城':{},
    },
    '上海':{
        '闵行':{
            "人民广场":{
                '炸鸡店':{}
            }
        },
        '闸北':{
            '火车战':{
                '携程':{}
            }
        },
        '浦东':{},
    },
    '山东':{},
}
current_level = menu
last_levels = []
while True:
    for key in current_level:
        print(key)
    choice = input(">>>>:").strip()
    if choice == "b":
        if not last_levels:break
        current_level = last_levels[-1]
        last_levels.pop()
    elif choice == "q":
        exit("quit")
    elif choice not  in current_level:
        continue
    else:
        last_levels.append(current_level)
        current_level = current_level[choice]

购物车：

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#user:Felix
#date:2016-10-19
#mail:wudonghang@wudonghang.com
#If you have questions or suggestions, please contact the author.
import os
import json
import time
import msvcrt

#定义购物车系统使用变量
data_file = "data.db"
system_start = "系统初始化中......".center(50,"-")
system_1 = "正在加载系统数据库...".center(50,"-")
system_2 = "系统数据库加载成功!".center(50,"-")
system_3 = "系统初始化完成！".center(50,"-")
system_error_1 = "系统数据库加载失败，请联系管理员!".center(50,"-")
system_error_2 = "系统数据库为空，请联系管理员!".center(45,"-")
system_error_3 = "用户已被锁定，请联系管理员!".center(45,"-")
system_time = time.strftime("%Y-%m-%d %H:%M:%S",time.localtime(time.time()))
shop_list = [["Ipone6",5000],["Ipone7",6000],["Mac Pro",15800],["Coffee",30],["Bike",2000],["Cloth",500],["Note Book",10]]
def user_message():
    with open(data_file,'r') as message:
        user_message = json.load(message)
    return user_message

def client_information():
    import socket
    import getpass
    import platform
    import uuid
    myname1=socket.getfqdn(socket.gethostname())
    myaddr=socket.gethostbyname(myname1)
    user=getpass.getuser()
    myplatform=platform.platform()
    mac=uuid.UUID(int=uuid.getnode())
    MAC=mac.hex[-12:]
    information = "主机名：" + myname1 + " " + "IP：" + myaddr + " " + "用户：" + user + " " + "系统：" + myplatform + " " + "MAC：" + MAC
    return information
def system_initialization():
    print("%s\n%s"%(system_start,system_1))
    if os.path.exists(data_file):
        print(system_2)
        if open(data_file,"r").read() == "":
            exit(system_error_2)
    else:
        exit(system_error_1)
    print("当前系统时间: %s".center(35,"-") %(system_time))
    print(system_3)

def password_write():
    print('请输入密码: ', end='', flush=True)
    li = []
    while 1:
        ch = msvcrt.getch()
        if ch == b'\r':
            msvcrt.putch(b'\n')
            password = b''.join(li).decode()
            break
        elif ch == b'\x08':
            if li:
                li.pop()
                msvcrt.putch(b'\b')
                msvcrt.putch(b' ')
                msvcrt.putch(b'\b')
        elif ch == b'\x1b':
            break
        else:
            li.append(ch)
            msvcrt.putch(b'*')
    return password

def user_authentication(user_message):
    username = input("请输入用户名:")
    if username not in user_message:
        exit("系统没有找到这个用户".center(50,"-"))
    real_password = user_message[username][0]['password']
    if int(user_message[username][0]['lock']) == 0:
        exit(system_error_3)
    count = 0
    while True:
        print("请选择 0:密码明文输入 1:密码加密输入 ---提示密码加密需要用终端运行！")
        case=input(">>>")
        if case.isdigit():
            case=int(case)
        else:
            print("\033[0;31;40m请输入数字\033[0m".center(50,"-"))
        if case == 0:
            password=input("请输入密码: ")
        elif case == 1:
            password = password_write()
        else:
            print("\033[0;31;40m请输入有效指令ID\033[0m")
        if password == real_password:
            print("Welcome! %s \n您的余额为:%s"%(username,user_message[username][0]['salary']))
            print("您上次的登陆信息为：%s"%user_message[username][0]['client_information'])
            user_message[username][0]['client_information']=client_information()
            json.dump(user_message, open(data_file, 'w'))
            break
        elif count < 2:
            print("用户密码输入不正确，请重新输入密码：")
            count += 1
            continue
        else:
            user_message[username][0]['lock'] = 0
            json.dump(user_message, open(data_file, 'w'))
            exit("您输入错误的密码超过3次，系统已将您的账户锁定".center(50,"-"))
    return username

def shoping(username,user_message):
    shopping_list = []
    history_shopping = user_message[username][0]['history_shopping']
    last_shoppoing = user_message[username][0]['last_shopping']
    history_shopping.extend(last_shoppoing)
    user_message[username][0]['history_shopping']=history_shopping

    while True:
        print("product list".center(50,"-"))
        for index,i in enumerate(shop_list):
            print(index,i[0],i[1])
        choice = input("请输入商品编号 or [%s]\n>>>:"%("quit"))
        if choice.isdigit():
            choice=int(choice)
            if choice >=0 and choice < len(shop_list):
                p = shop_list[choice]
                if user_message[username][0]['salary'] >= p[1]:
                    user_message[username][0]['salary'] -= p[1]
                    shopping_list.append(p)
                    print("Added \033[32;1m[%s]\033[0m into your shopping cart,and your current balance is \033[41;1m%s\033[0m" %(p[0],user_message[username][0]['salary']))
                else:
                    print("钱不够，你只有[\033[41;1m%s\033[0m]"%user_message[username][0]['salary'])
            else:
                print("\033[0;31;40m没有此类商品...\033[0m")
        elif choice == "quit":
            print("本次已购买商品".center(50,"-"))
            a = []
            new_shopping = []
            for i in shopping_list:
                b = i[0] + " x " + str(shopping_list.count(i)) + " \033[1;31;40m总价\033[0m: " + str(shopping_list.count(i) * i[1])
                a.append(b)
            for i in a:
                 if i not in new_shopping:
                     new_shopping.append(i)
            for i in new_shopping:
                print(i)
            print("Your left balance is ", user_message[username][0]['salary'])
            user_message[username][0]['last_shopping'] = new_shopping
            json.dump(user_message, open(data_file, 'w'))
            exit("购物车程序已经退出！".center(50,"-"))
def menu(user_message):
    while True:
        case = input("请选择 0:注册 1:登陆 2:查询 3:充值 4:修改密码 5:解除锁定 6:退出\n>>>")
        if case.isdigit():
            case=int(case)
        else:
            print("\033[0;31;40m请输入数字\033[0m".center(50,"-"))
        if case == 0:
            print("开始注册".center(50,"-"))
            username=input("请输入用户名：")
            if username in user_message:
                print("用户名重复".center(50,"-"))
                continue
            else:
                user_message[username]=[{'history_shopping':[],'password':'123','last_shopping':[],'client_information':[],'salary':0,'lock':1}]
                print(user_message,user_message[username])
                json.dump(user_message, open(data_file, 'w'))
                print("用户注册成功！%s 默认密码为：123 初始余额为：0"%username)
        elif case == 1:
            shoping(username=user_authentication(user_message=user_message),user_message=user_message)
        elif case == 2:
            print("开始查询".center(50,"-"))
            username=input("请输入要查询的用户：")
            if username not in user_message:
                print("系统没有找到这个用户".center(50,"-"))
                continue
            last_shopping=str(user_message[username][0]['last_shopping'])
            history_shopping=str(user_message[username][0]['history_shopping'])
            print("用户名：%s\n上次购买的商品为：%s\n历史购买的商品为：%s\n上次登陆信息为：%s\n余额为:\033[41;1m%s\033[0m"%(username,last_shopping.strip("[").strip("]").replace("\\x1b[1;31;40m","").replace("\\x1b[0m",""),history_shopping.strip("[").strip("]").replace("\\x1b[1;31;40m","").replace("\\x1b[0m",""),user_message[username][0]['client_information'],user_message[username][0]['salary']))
        elif case == 3:
            print("开始充值".center(50,"-"))
            username=input("请输入要充值的用户：")
            print("您当前的余额为：\033[41;1m%s\033[0m"%(user_message[username][0]['salary']))
            money=input("请输入要充值的金额：")
            if money.isdigit():
                money=int(money)
                user_message[username][0]['salary']+=money
                print("充值成功！%s 当前的余额为：\033[41;1m%s\033[0m"%(username,user_message[username][0]['salary']))
                json.dump(user_message, open(data_file, 'w'))
            else:
                exit("输入错误，为了账号安全，系统已强制退出，欢迎您下次光临".center(50,"-"))
        elif case == 4:
            username=input("请输入要修改密码的用户：")
            if username not in user_message:
                print("系统没有找到这个用户".center(50,"-"))
                continue
            else:
                old_passwd = input("请输入老密码：")
                if old_passwd == user_message[username][0]['password']:
                    new1_passwd = input("请输入新密码：")
                    new2_passwd = input("请再次输入新密码：")
                    if new1_passwd == new2_passwd:
                        user_message[username][0]['password']=new2_passwd
                        json.dump(user_message, open(data_file, 'w'))
                        print("修改密码完成！")
                        continue
                    else:
                        print("两次输入的密码不一致！")
                        continue
                else:
                    print("密码校验不对，请确认财产安全的情况下，再次修改密码！")
        elif case == 5:
            username=input("请输入要解除锁定的用户：")
            passwd = input("请输入已知密码：")
            if username not in user_message:
                print("系统没有找到这个用户".center(50,"-"))
                continue
            elif passwd == user_message[username][0]['password']:
                user_message[username][0]['lock']=1
                json.dump(user_message, open(data_file, 'w'))
                print("用户[%s]已经解除锁定！"%username)
            else:
                print("密码校验不对，请确认财产安全的情况下，再次解除锁定！")
        elif case == 6:
            exit("已经退出购物车系统".center(50,"-"))
        else:
            print("\033[0;31;40m请输入有效指令ID\033[0m")

system_initialization()
menu(user_message=user_message())

data.db：

{"wudonghang": [{"lock": 1, "history_shopping": ["Note Book x 2 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 20", "Coffee x 2 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 60", "Ipone6 x 2 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 10000", "Cloth x 1 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 500", "Note Book x 1 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 10", "Coffee x 1 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 30", "Bike x 1 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 2000", "Coffee x 2 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 60", "Bike x 2 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 4000", "Cloth x 1 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 500", "Note Book x 5 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 50", "Coffee x 1 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 30"], "client_information": "\u4e3b\u673a\u540d\uff1aYOS-01606252229 IP\uff1a192.168.11.11 \u7528\u6237\uff1aAdministrator \u7cfb\u7edf\uff1aWindows-7-6.1.7601-SP1 MAC\uff1a000b2f40160f", "salary": 23312, "last_shopping": ["Note Book x 1 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 10", "Cloth x 1 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 500"], "password": "123"}], "liuyao": [{"lock": 1, "history_shopping": ["Coffee x 1 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 30", "Ipone6 x 1 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 5000"], "client_information": "\u4e3b\u673a\u540d\uff1aYOS-01606252229 IP\uff1a192.168.11.11 \u7528\u6237\uff1aAdministrator \u7cfb\u7edf\uff1aWindows-7-6.1.7601-SP1 MAC\uff1a000b2f40160f", "salary": 19465, "last_shopping": ["Coffee x 2 \u001b[1;31;40m\u603b\u4ef7\u001b[0m: 60"], "password": "123"}]}

readme：

###博客园地址：[Python之路,Day2 - Python基础2](http://www.cnblogs.com/wudonghang/p/5984808.html "我的博客园地址")
***
###程序简介：
>背景

#####作业：

* 购物车

* 三级菜单

***
>购物车构想
   
   包含 0:注册 1:登陆 2:查询 3:充值 4:修改密码 5:解除锁定 6:退出等功能

   采用json数据格式完成数据持久化
   0:注册 采用json数据新增
   1:登陆 采用三次验证规则，先判断有没有这个用户，然后判断是否是锁定状态，然后验证密码，错误超过三次锁定用户并退出系统
   2:查询 将用户上次购买，历史购买，上次登陆信息以及余额显示出来
   3:充值 将充值的金额与json中数据相加出新值
   4:修改密码 判断old密码是否正确，错误退出。正确判断输入2次密码是否一致，一致写入文件
   5:解除锁定 判断用户以及密码，来修改json中lock值
   6:退出 exit
   
***

***
>三级菜单构想
   
   1.定义一个字典，定义地区，省，市
   2.嵌套2个 while True循环，一个为地区外循环，另一个为省市内循环
   3.判断用户输入指令是否正确，不正确报错重新输入
   4.判断用户输入是正确指令还是“b”or“q”，b:返回上一级 q:退出程序
   
***

来自为知笔记(Wiz)