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58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
## Stackoverflow (It)
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#
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# @website https://stackoverflow.com/
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# @provide-api not clear (https://api.stackexchange.com/docs/advanced-search)
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#
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# @using-api no
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# @results HTML
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# @stable no (HTML can change)
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# @parse url, title, content
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from urlparse import urljoin
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from cgi import escape
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from urllib import urlencode
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from lxml import html
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# engine dependent config
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categories = ['it']
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paging = True
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# search-url
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url = 'http://stackoverflow.com/'
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search_url = url+'search?{query}&page={pageno}'
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# specific xpath variables
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results_xpath = '//div[contains(@class,"question-summary")]'
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link_xpath = './/div[@class="result-link"]//a|.//div[@class="summary"]//h3//a'
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title_xpath = './/text()'
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content_xpath = './/div[@class="excerpt"]//text()'
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# do search-request
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def request(query, params):
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params['url'] = search_url.format(query=urlencode({'q': query}),
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pageno=params['pageno'])
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return params
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# get response from search-request
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def response(resp):
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results = []
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dom = html.fromstring(resp.text)
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# parse results
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for result in dom.xpath(results_xpath):
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link = result.xpath(link_xpath)[0]
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href = urljoin(url, link.attrib.get('href'))
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title = escape(' '.join(link.xpath(title_xpath)))
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content = escape(' '.join(result.xpath(content_xpath)))
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# append result
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results.append({'url': href,
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'title': title,
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'content': content})
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# return results
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return results
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