':return: æé®è
:rtype: Author or zhihu.ANONYMOUS'

@property
@check_soup('_author')
def author(self):

    from .author import Author, ANONYMOUS
    logs = self._query_logs()
    author_a = logs[(-1)].find_all('div')[0].a
    if (author_a.text == '\xe5\x8c\xbf\xe5\x90\x8d\xe7\x94\xa8\xe6\x88\xb7'):
        return ANONYMOUS
    else:
        url = (Zhihu_URL + author_a['href'])
        return Author(url, name=author_a.text, session=self._session)
