|  | ## 500px (Images)
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							|  | #
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							|  | # @website     https://500px.com
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							|  | # @provide-api yes (https://developers.500px.com/)
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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, thumbnail, img_src, content
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							|  | #
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							|  | # @todo        rewrite to api
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							|  | 
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							|  | 
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							|  | from urllib import urlencode
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							|  | from urlparse import urljoin
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							|  | from lxml import html
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							|  | import re
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							|  | 
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							|  | # engine dependent config
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							|  | categories = ['images']
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							|  | paging = True
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							|  | 
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							|  | # search-url
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							|  | base_url = 'https://500px.com'
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							|  | search_url = base_url+'/search?search?page={pageno}&type=photos&{query}'
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							|  | 
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							|  | 
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							|  | # do search-request
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							|  | def request(query, params):
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							|  |     params['url'] = search_url.format(pageno=params['pageno'],
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							|  |                                       query=urlencode({'q': query}))
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							|  | 
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							|  |     return params
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							|  | 
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							|  | 
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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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							|  | 
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							|  |     dom = html.fromstring(resp.text)
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							|  |     regex = re.compile('3\.jpg.*$')
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							|  | 
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							|  |     # parse results
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							|  |     for result in dom.xpath('//div[@class="photo"]'):
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							|  |         link = result.xpath('.//a')[0]
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							|  |         url = urljoin(base_url, link.attrib.get('href'))
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							|  |         title = result.xpath('.//div[@class="title"]//text()')[0]
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							|  |         thumbnail_src = link.xpath('.//img')[0].attrib['src']
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							|  |         # To have a bigger thumbnail, uncomment the next line
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							|  |         #thumbnail_src = regex.sub('4.jpg', thumbnail_src)
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							|  |         content = result.xpath('.//div[@class="info"]//text()')[0]
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							|  |         img_src = regex.sub('2048.jpg', thumbnail_src)
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							|  | 
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							|  |         # append result
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							|  |         results.append({'url': url,
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							|  |                         'title': title,
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							|  |                         'img_src': img_src,
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							|  |                         'content': content,
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							|  |                         'thumbnail_src': thumbnail_src,
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							|  |                         'template': 'images.html'})
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							|  | 
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							|  |     # return results
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							|  |     return results
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