Python 用户登录练习

#!/usr/bin/env python

#_*_ coding:utf-8 _*_

import os 

import sys

count=3

retry_count=0

account_file='/home/hello/login.txt'

lock_file='/home/hello/lock.txt'

while retry_count < count:

    username=raw_input('input the username: ')

    lock_check=file(lock_file)

    for line in lock_check.readlines():
line=line.split()

        if username == line[0]:
   sys.exit('user is locked')

#            print '%s is locked',username

#            break

    password=raw_input('input the password: ')

    f=file(account_file,'rb')

    match_flag=False

    for line in f.readlines():

        user,passwd=line.strip('\n').split(':')

        if username == user and password == passwd:

            print 'login successful'

            match_flag=True

            break

    f.close()

    if match_flag == True:
print 'enjoy your system'

        break

    elif match_flag == False:

        print 'User is not matched'

        retry_count +=1

#    else:

#        print 'enjoy your system'

else:

    print 'your account is locked'

    f = file(lock_file,'ab')

    f.write(username)

    f.close()

           

note:登录系统，输入用户名和密码，如果三次登录失败的话，将用户进行锁定