@property<EOL><INDENT>@check_soup('<STR_LIT>')<EOL>def title(self):<DEDENT>
return self.soup.find('<STR_LIT>', class_='<STR_LIT>').text.replace('<STR_LIT:\n>', '<STR_LIT>')<EOL>
获取问题标题.

        :return: 问题标题
        :rtype: str