':type did:   str
:type uin:  int
:return:    dict
"nick": "Yinzo",
"uin": 3642699982'

def get_discuss_member_info(self, did, uin):

    did = str(did)
    if (did not in set(self.discuss_info.keys())):
        logger.info('did(discuss_id)    not    in    cache,    try    to    request    info')
        result = self.get_discuss_info(did)
        if (result is False):
            logger.warning('\xe6\xb2\xa1\xe6\x9c\x89\xe6\x89\x80\xe6\x9f\xa5\xe8\xaf\xa2\xe7\x9a\x84discuss_id\xe4\xbf\xa1\xe6\x81\xaf')
            return
    for member in self.discuss_info[did]['mem_info']:
        if (member['uin'] == int(uin)):
            return member
