python小练习之登录程序，登录三次错误之后锁定账户

try:
    f = open('jilu.txt','r')
    context = f.read()
    print context
except:
    print 'you need to check in 3 times'
    for i in range(3):
        name = raw_input('Please input your name:')
        password = raw_input('Please input your password:')
        if name == 'hill' and password == '123456':
            print 'congratulations! welcome to this!'
            break
        else:
            print 'sorry,your name or password is wrong! please try again'
            if i == 2:
                f = open('jilu.txt','a+')
                f.write('your account is not used')
                f.close()
                break