code: def questions(self):
          
          self._make_soup()
          # noinspection PyTypeChecker
          for question in self._page_get_questions(self.soup):
              yield question
          i = 2
          while True:
              soup = BeautifulSoup(self._session.get(
                  self.url[:-1] + '?page=' + str(i)).text)
              for question in self._page_get_questions(soup):
                  if question == 0:
                      return
                  yield question
              i += 1
docs: 获取收藏夹内所有问题对象.
  
          :return: 收藏夹内所有问题，返回生成器
          :rtype: Question.Iterable