@property<EOL><INDENT>@check_soup('<STR_LIT>')<EOL>def followed_topic_num(self):<DEDENT>
if self.url is not None:<EOL><INDENT>tag = self.soup.find('<STR_LIT>', class_='<STR_LIT>')<EOL>if tag is not None:<EOL><INDENT>return int(re_get_number.match(<EOL>tag.parent.strong.text).group(<NUM_LIT:1>))<EOL><DEDENT><DEDENT>return <NUM_LIT:0><EOL>
获取用户关注的话题数

        :return: 关注的话题数
        :rtype: int