code: def upvote_num(self):
          
          if self.url is None:
              return 0
          else:
              number = int(self.soup.find(
                  'span', class_='zm-profile-header-user-agree').strong.text)
              return number
docs: 获取收到的的赞同数量.
  
          :return: 收到的的赞同数量
          :rtype: int