[fix] function parameters

        return html_to_text(xpath_results.text_content())

def extract_url(xpath_results, search_url=search_url):

def extract_url(xpath_results, search_url):

    url = extract_text(xpath_results)

    if url.startswith('//'):

    dom = html.fromstring(resp.text)

    if results_xpath:

        for result in dom.xpath(results_xpath):

            url = extract_url(result.xpath(url_xpath))

            url = extract_url(result.xpath(url_xpath), search_url)

            title = extract_text(result.xpath(title_xpath)[0])

            content = extract_text(result.xpath(content_xpath)[0])

            results.append({'url': url, 'title': title, 'content': content})