':param Author author: æ¥æ¶ç§ä¿¡çšæ·å¯¹è±¡
:param string content: åéç»çšæ·çç§ä¿¡åå®¹
:return: æåè¿å TrueïŒå€±èŽ¥è¿å False
:rtype: bool'

def send_message(self, author, content):

    if (isinstance(author, Author) is False):
        raise ValueError('argument    answer    need    to    be    Zhihu.Author    object.')
    if (not content):
        raise ValueError('answer    content    cannot    be    empty')
    if (author.url == self.url):
        return False
    data = {'member_id': author.hash_id, 'content': content, 'token': '', '_xsrf': author.xsrf}
    res = self._session.post(Send_Message_Url, data=data)
    return (res.json()['r'] == 0)
