Python小练习-购物商城（一部分代码，基于python2.7.5）

新手写作，用来练习与提高python编写、思考能力，有错误的地方请指正，谢谢！

第一次写博客，课题是一位大神的博客，本着练习的目的，就自己重写了一遍，有很多不足的地方，希望借博客记录下自己的成长； 

#!/usr/bin/env python
#coding:utf-8
import sys
class Shop(object):
    def __init__(self):
        self.Red = "33[1;31m"
        self.Gre = "33[1;32m"
        self.Res = "33[0m"
    with open('user_file.txt','r') as fp:
            user_list = eval(fp.readline())  # 用户的名字与密码转换成字典
    with open('lock_name.txt','r') as fp2:
            lock_name = eval(fp2.readline())  # 锁定的用户为列表
    with open('money_list.txt','r') as fp3:
            money_list = eval(fp3.readline())
    def nameCheck(self,a):
        if a in self.user_list and a not in self.lock_name:
            return 0 #如果名字在user_file里面，且没在锁定文件里面的话，返回0
        elif a in self.user_list and a in self.lock_name:
            return 1 #名字在user_file里面，且被锁定，返回1
        else:
            return 2 #否则返回2

    def passwdCheck(self,a,b):
        count = 3
        while count > 1:
            try:
                if b == self.user_list[a]:
                    return 0
                else:
                    count -= 1
                    print "密码错误，剩余%d次" % count
                    b = raw_input("请再次输入你的密码: ")
            except KeyError :
                 return 2
        else:
            return 1


    def checkAfter(self,b,c,dd):
        if b == 0 and c == 0  :
            print self.Gre,"恭喜你(%s),登陆成功!!!,欢迎你来到我们的商店!"%dd,self.Res #成功后动作进到商店
            self.shopCounts()
        elif b == 1 :
            print self.Red,"对不起,你(%s)的账号被锁定,请联系客服!!!"%dd,self.Res  #不成功则动作回到初始位置
            pass
        elif c == 1 :
            print "密码错误,账号将被锁定"
            self.nameLock(dd)
        else:
            print self.Red,"账号(%s)不存在,是否创建用户"%dd,self.Res #不存在则动作到注册位置
            self.signName()

    def shopCounts(self):
        shop_list = {"phone":2000,"ipad":1500,"ice_box":500}
        for key,value in shop_list.items():
            print key," : ",value #打印商店内容

    def signName(self):
        while True:
            sign_name = raw_input("请输入你要注册的账号:")
            value = self.nameCheck(sign_name)
            passwd = raw_input("输入你的密码: ")
            if value == 2:
                print "congratulations,账号可用"
                money = raw_input("输入账号资金: ")
                if money.isdigit():
                    print """name:    %s
passwd:    %s
money:    %d""" %(sign_name,passwd,int(money))
                    self.user_list.setdefault(sign_name,passwd)
                    self.money_list.setdefault(sign_name,money)
                    confirm = raw_input("是否确认以上信息: ")
                    if confirm.upper() == "Y":
                        with open('user_file.txt','r+') as fp:
                            fp.write(str(self.user_list))
                        with open('money_list.txt','r+') as fp2:
                            fp2.write(str(self.money_list))
                        break
                    else:
                        print "重新来过"
                        continue
                else:
                    print "资金错误,返回重来"
                    continue
            else:
                print "账号不可用"
                continue
    def nameLock(self,a):
        self.lock_name.append(a)
        with open('lock_name.txt','r+') as fp:
            fp.write(str(self.lock_name))




maomao = Shop()
while True:
    name = raw_input("请输入你的账号:")

    if name.upper() == "Q":
        sys.exit()
    else:
        passwd = raw_input("请输入你的密码:")
        b = maomao.nameCheck(name)
        c = maomao.passwdCheck(name,passwd)
        maomao.checkAfter(b,c,name)