code: def author(self):
          
          from .author import Author
  
          url = self.soup['author']['profileUrl']
          name = self.soup['author']['name']
          motto = self.soup['author']['bio']
          template = self.soup['author']['avatar']['template']
          photo_id = self.soup['author']['avatar']['id']
          photo_url = template.format(id=photo_id, size='r')
          return Author(url, name, motto, photo_url=photo_url,
                        session=self._session)
docs: 获取文章作者.
  
          :return: 文章作者
          :rtype: Author