# coding:utf-8

import re

def validateEmail(email):

    if re.match("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$", email) != None:

    # if re.match("/^\w+@[a-z0-9]+\.[a-z]{2,4}$/", email) != None:

        print 'ok'

        return 'ok'

    else:

        print 'fail'

        return 'fail'

validateEmail('01550@cto.net.cn')