@property<EOL><INDENT>def unanswered_questions(self):<DEDENT>
from .question import Question<EOL>question_url = Topic_Unanswered_Question_Url.format(self.id)<EOL>params = {'<STR_LIT>': <NUM_LIT:1>}<EOL>while True:<EOL><INDENT>res = self._session.get(question_url, params=params)<EOL>soup = BeautifulSoup(res.content)<EOL>if soup.find('<STR_LIT>', class_='<STR_LIT:error>') is not None:<EOL><INDENT>return<EOL><DEDENT>questions = soup.find_all('<STR_LIT>', class_='<STR_LIT>')<EOL>for qu_div in questions:<EOL><INDENT>url = Zhihu_URL + qu_div.h2.a['<STR_LIT>']<EOL>title = qu_div.h2.a.text.strip()<EOL>yield Question(url, title, session=self._session)<EOL><DEDENT>params['<STR_LIT>'] += <NUM_LIT:1><EOL><DEDENT>
获取话题下的等待回答的问题

        什么是「等待回答」的问题：https://www.zhihu.com/question/40470324

        :return: 话题下等待回答的问题，返回生成器
        :rtype: Question.Iterable