#!/usr/bin/env python
#_*_ coding:utf-8 _*_

import hashlib

def zhuce():

    username = raw_input("please input your username")
    password = raw_input(\'please input your password\')
    hash = hashlib.md5()
    hash.update(password)
    with open(\'info.txt\',\'r+\') as fd:
        fd.write(username)
        fd.write(\'\t\')
        fd.write(hash.hexdigest())
        fd.write(\'\n\')
    print "注册成功"

def login(user,passwd):
    with open(\'info.txt\') as fd:
        for line in fd:
            if user == line.strip(\'\n\').split()[0] and passwd == line.strip(\'\n\').split()[1]:
                return True
            else:
                return False

def menu():
    memu = \'\'\'
    1 注册
    2 登陆
    \'\'\'
    print memu

count = 0
retry = 3

while count < retry:
    menu()
    choice = raw_input(\'Please input your choice!\')
    if choice == \'1\':
        zhuce()
    if choice == \'2\':
        user = raw_input(\'请输入用户名：\')
        passwd = raw_input(\'请输入密码：\')
        hash1 = hashlib.md5()
        hash1.update(passwd)
        password = hash1.hexdigest()
        result = login(user,password)
        if result:
           print \'success!\'
            break
        else:
            print \'error\'
            count += 1