|  | """
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							|  |  Yahoo (Web)
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							|  | 
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							|  |  @website     https://yandex.ru/
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							|  |  @provide-api ?
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							|  |  @using-api   no
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							|  |  @results     HTML (using search portal)
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							|  |  @stable      no (HTML can change)
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							|  |  @parse       url, title, content
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							|  | """
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							|  | 
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							|  | from urllib.parse import urlencode, urlparse
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							|  | from lxml import html
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							|  | from searx import logger
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							|  | from searx.exceptions import SearxEngineCaptchaException
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							|  | 
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							|  | logger = logger.getChild('yandex engine')
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							|  | 
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							|  | # engine dependent config
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							|  | categories = ['general']
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							|  | paging = True
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							|  | language_support = True  # TODO
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							|  | 
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							|  | default_tld = 'com'
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							|  | language_map = {'ru': 'ru',
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							|  |                 'ua': 'ua',
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							|  |                 'be': 'by',
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							|  |                 'kk': 'kz',
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							|  |                 'tr': 'com.tr'}
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							|  | 
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							|  | # search-url
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							|  | base_url = 'https://yandex.{tld}/'
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							|  | search_url = 'search/?{query}&p={page}'
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							|  | 
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							|  | results_xpath = '//li[@class="serp-item"]'
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							|  | url_xpath = './/h2/a/@href'
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							|  | title_xpath = './/h2/a//text()'
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							|  | content_xpath = './/div[@class="text-container typo typo_text_m typo_line_m organic__text"]//text()'
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							|  | 
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							|  | 
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							|  | def request(query, params):
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							|  |     lang = params['language'].split('-')[0]
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							|  |     host = base_url.format(tld=language_map.get(lang) or default_tld)
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							|  |     params['url'] = host + search_url.format(page=params['pageno'] - 1,
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							|  |                                              query=urlencode({'text': query}))
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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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							|  |     resp_url = urlparse(resp.url)
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							|  |     if resp_url.path.startswith('/showcaptcha'):
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							|  |         raise SearxEngineCaptchaException()
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							|  | 
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							|  |     dom = html.fromstring(resp.text)
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							|  |     results = []
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							|  | 
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							|  |     for result in dom.xpath(results_xpath):
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							|  |         try:
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							|  |             res = {'url': result.xpath(url_xpath)[0],
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							|  |                    'title': ''.join(result.xpath(title_xpath)),
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							|  |                    'content': ''.join(result.xpath(content_xpath))}
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							|  |         except:
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							|  |             logger.exception('yandex parse crash')
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							|  |             continue
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							|  | 
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							|  |         results.append(res)
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							|  | 
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							|  |     return results
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