@property<EOL><INDENT>@check_soup('<STR_LIT>')<EOL>def weibo_url(self):<DEDENT>
if self.url is None:<EOL><INDENT>return None<EOL><DEDENT>else:<EOL><INDENT>tmp = self.soup.find(<EOL>'<STR_LIT:a>', class_='<STR_LIT>')<EOL>return tmp['<STR_LIT>'] if tmp is not None else '<STR_LIT>'<EOL><DEDENT>
获取用户微博链接.

        :return: 微博链接地址，如没有则返回 ‘unknown’
        :rtype: str