code: def followee_num(self):
          
          if self.url is None:
              return 0
          else:
              number = int(self.soup.find(
                  'div', class_='zm-profile-side-following').a.strong.text)
              return number
docs: 获取关注了多少人.
  
          :return: 关注的人数
          :rtype: int