def sitemap_check(url):
        """
        Sitemap-Crawler are supported by every site which have a
        Sitemap set in the robots.txt.

        :param str url: the url to work on
        :return bool: Determines if Sitemap is set in the site's robots.txt
        """
        response = urllib2.urlopen(UrlExtractor.get_sitemap_url(url, True))

        # Check if "Sitemap" is set
        return "Sitemap:" in response.read().decode('utf-8')
Sitemap-Crawler are supported by every site which have a
        Sitemap set in the robots.txt.

        :param str url: the url to work on
        :return bool: Determines if Sitemap is set in the site's robots.txt