':return: ç¹èµçšæ·
:rtype: Author.Iterable'

@property
def upvoters(self):

    self._make_soup()
    next_req = (('/answer/' + str(self.aid)) + '/voters_profile')
    while (next_req != ''):
        data = self._session.get((Zhihu_URL + next_req)).json()
        next_req = data['paging']['next']
        for html in data['payload']:
            soup = BeautifulSoup(html)
            (yield self._parse_author_soup(soup))
