from urllib import quote from lxml import html from urlparse import urljoin base_url = 'http://stackoverflow.com/' search_url = base_url+'search?q=' def request(query, params): global search_url query = quote(query.replace(' ', '+'), safe='+') params['url'] = search_url + query return params def response(resp): global base_url results = [] dom = html.fromstring(resp.text) for result in dom.xpath('//div[@class="question-summary search-result"]'): link = result.xpath('.//div[@class="result-link"]//a')[0] url = urljoin(base_url, link.attrib.get('href')) title = ' '.join(link.xpath('.//text()')) content = ' '.join(result.xpath('.//div[@class="excerpt"]//text()')) results.append({'url': url, 'title': title, 'content': content}) return results