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google_scholar.html

google_scholar.html 31 KB
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  1. <!DOCTYPE html>
    2. 

  2. 

  3. <html lang="en" data-content_root="../../../">
    4. 

  4.   <head>
    5. 

  5.     <meta charset="utf-8" />
    6. 

  6.     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    7. 

  7.   <meta name="viewport" content="width=device-width, initial-scale=1">
    8. 

  8.     <title>searx.engines.google_scholar &#8212; SearXNG Documentation (2025.5.1+1a1628149)</title>
    9. 

  9.     <link rel="stylesheet" type="text/css" href="../../../_static/pygments.css?v=6625fa76" />
    10. 

  10.     <link rel="stylesheet" type="text/css" href="../../../_static/searxng.css?v=52e4ff28" />
    11. 

  11.     <script src="../../../_static/documentation_options.js?v=cc9fc81d"></script>
    12. 

  12.     <script src="../../../_static/doctools.js?v=9a2dae69"></script>
    13. 

  13.     <script src="../../../_static/sphinx_highlight.js?v=dc90522c"></script>
    14. 

  14.     <script data-project="searxng" data-version="2025.5.1+1a1628149" src="../../../_static/describe_version.js?v=fa7f30d0"></script>
    15. 

  15.     <link rel="index" title="Index" href="../../../genindex.html" />
    16. 

  16.     <link rel="search" title="Search" href="../../../search.html" /> 
    17. 

  17.   </head><body>
    18. 

  18.     <div class="related" role="navigation" aria-label="Related">
    19. 

  19.       <h3>Navigation</h3>
    20. 

  20.       <ul>
    21. 

  21.         <li class="right" style="margin-right: 10px">
    22. 

  22.           <a href="../../../genindex.html" title="General Index"
    23. 

  23.              accesskey="I">index</a></li>
    24. 

  24.         <li class="right" >
    25. 

  25.           <a href="../../../py-modindex.html" title="Python Module Index"
    26. 

  26.              >modules</a> |</li>
    27. 

  27.         <li class="nav-item nav-item-0"><a href="../../../index.html">SearXNG Documentation (2025.5.1+1a1628149)</a> &#187;</li>
    28. 

  28.           <li class="nav-item nav-item-1"><a href="../../index.html" >Module code</a> &#187;</li>
    29. 

  29.           <li class="nav-item nav-item-2"><a href="../engines.html" accesskey="U">searx.engines</a> &#187;</li>
    30. 

  30.         <li class="nav-item nav-item-this"><a href="">searx.engines.google_scholar</a></li> 
    31. 

  31.       </ul>
    32. 

  32.     </div>  
    33. 

  33. 

  34.     <div class="document">
    35. 

  35.       <div class="documentwrapper">
    36. 

  36.         <div class="bodywrapper">
    37. 

  37.           <div class="body" role="main">
    38. 

  38.             
    39. 

  39.   <h1>Source code for searx.engines.google_scholar</h1><div class="highlight"><pre>
    40. 

  40. <span></span><span class="c1"># SPDX-License-Identifier: AGPL-3.0-or-later</span>
    41. 

  41. <span class="sd">&quot;&quot;&quot;This is the implementation of the Google Scholar engine.</span>
    42. 

  42. 

  43. <span class="sd">Compared to other Google services the Scholar engine has a simple GET REST-API</span>
    44. 

  44. <span class="sd">and there does not exists `async` API.  Even though the API slightly vintage we</span>
    45. 

  45. <span class="sd">can make use of the :ref:`google API` to assemble the arguments of the GET</span>
    46. 

  46. <span class="sd">request.</span>
    47. 

  47. <span class="sd">&quot;&quot;&quot;</span>
    48. 

  48. 

  49. <span class="kn">from</span><span class="w"> </span><span class="nn">typing</span><span class="w"> </span><span class="kn">import</span> <span class="n">TYPE_CHECKING</span>
    50. 

  50. <span class="kn">from</span><span class="w"> </span><span class="nn">typing</span><span class="w"> </span><span class="kn">import</span> <span class="n">Optional</span>
    51. 

  51. 

  52. <span class="kn">from</span><span class="w"> </span><span class="nn">urllib.parse</span><span class="w"> </span><span class="kn">import</span> <span class="n">urlencode</span>
    53. 

  53. <span class="kn">from</span><span class="w"> </span><span class="nn">datetime</span><span class="w"> </span><span class="kn">import</span> <span class="n">datetime</span>
    54. 

  54. <span class="kn">from</span><span class="w"> </span><span class="nn">lxml</span><span class="w"> </span><span class="kn">import</span> <span class="n">html</span>
    55. 

  55. 

  56. <span class="kn">from</span><span class="w"> </span><span class="nn">searx.utils</span><span class="w"> </span><span class="kn">import</span> <span class="p">(</span>
    57. 

  57.     <span class="n">eval_xpath</span><span class="p">,</span>
    58. 

  58.     <span class="n">eval_xpath_getindex</span><span class="p">,</span>
    59. 

  59.     <span class="n">eval_xpath_list</span><span class="p">,</span>
    60. 

  60.     <span class="n">extract_text</span><span class="p">,</span>
    61. 

  61. <span class="p">)</span>
    62. 

  62. 

  63. <span class="kn">from</span><span class="w"> </span><span class="nn">searx.exceptions</span><span class="w"> </span><span class="kn">import</span> <span class="n">SearxEngineCaptchaException</span>
    64. 

  64. 

  65. <span class="kn">from</span><span class="w"> </span><span class="nn">searx.engines.google</span><span class="w"> </span><span class="kn">import</span> <span class="n">fetch_traits</span>  <span class="c1"># pylint: disable=unused-import</span>
    66. 

  66. <span class="kn">from</span><span class="w"> </span><span class="nn">searx.engines.google</span><span class="w"> </span><span class="kn">import</span> <span class="p">(</span>
    67. 

  67.     <span class="n">get_google_info</span><span class="p">,</span>
    68. 

  68.     <span class="n">time_range_dict</span><span class="p">,</span>
    69. 

  69. <span class="p">)</span>
    70. 

  70. <span class="kn">from</span><span class="w"> </span><span class="nn">searx.enginelib.traits</span><span class="w"> </span><span class="kn">import</span> <span class="n">EngineTraits</span>
    71. 

  71. 

  72. <span class="k">if</span> <span class="n">TYPE_CHECKING</span><span class="p">:</span>
    73. 

  73.     <span class="kn">import</span><span class="w"> </span><span class="nn">logging</span>
    74. 

  74. 

  75.     <span class="n">logger</span><span class="p">:</span> <span class="n">logging</span><span class="o">.</span><span class="n">Logger</span>
    76. 

  76. 

  77. <span class="n">traits</span><span class="p">:</span> <span class="n">EngineTraits</span>
    78. 

  78. 

  79. <span class="c1"># about</span>
    80. 

  80. <span class="n">about</span> <span class="o">=</span> <span class="p">{</span>
    81. 

  81.     <span class="s2">&quot;website&quot;</span><span class="p">:</span> <span class="s1">&#39;https://scholar.google.com&#39;</span><span class="p">,</span>
    82. 

  82.     <span class="s2">&quot;wikidata_id&quot;</span><span class="p">:</span> <span class="s1">&#39;Q494817&#39;</span><span class="p">,</span>
    83. 

  83.     <span class="s2">&quot;official_api_documentation&quot;</span><span class="p">:</span> <span class="s1">&#39;https://developers.google.com/custom-search&#39;</span><span class="p">,</span>
    84. 

  84.     <span class="s2">&quot;use_official_api&quot;</span><span class="p">:</span> <span class="kc">False</span><span class="p">,</span>
    85. 

  85.     <span class="s2">&quot;require_api_key&quot;</span><span class="p">:</span> <span class="kc">False</span><span class="p">,</span>
    86. 

  86.     <span class="s2">&quot;results&quot;</span><span class="p">:</span> <span class="s1">&#39;HTML&#39;</span><span class="p">,</span>
    87. 

  87. <span class="p">}</span>
    88. 

  88. 

  89. <span class="c1"># engine dependent config</span>
    90. 

  90. <span class="n">categories</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;science&#39;</span><span class="p">,</span> <span class="s1">&#39;scientific publications&#39;</span><span class="p">]</span>
    91. 

  91. <span class="n">paging</span> <span class="o">=</span> <span class="kc">True</span>
    92. 

  92. <span class="n">max_page</span> <span class="o">=</span> <span class="mi">50</span>
    93. 

  93. <span class="sd">&quot;&quot;&quot;`Google max 50 pages`_</span>
    94. 

  94. 

  95. <span class="sd">.. _Google max 50 pages: https://github.com/searxng/searxng/issues/2982</span>
    96. 

  96. <span class="sd">&quot;&quot;&quot;</span>
    97. 

  97. <span class="n">language_support</span> <span class="o">=</span> <span class="kc">True</span>
    98. 

  98. <span class="n">time_range_support</span> <span class="o">=</span> <span class="kc">True</span>
    99. 

  99. <span class="n">safesearch</span> <span class="o">=</span> <span class="kc">False</span>
    100. 

  100. <span class="n">send_accept_language_header</span> <span class="o">=</span> <span class="kc">True</span>
    101. 

  101. 

  102. 

  103. <div class="viewcode-block" id="time_range_args">
    104. 

  104. <a class="viewcode-back" href="../../../dev/engines/online/google.html#searx.engines.google_scholar.time_range_args">[docs]</a>
    105. 

  105. <span class="k">def</span><span class="w"> </span><span class="nf">time_range_args</span><span class="p">(</span><span class="n">params</span><span class="p">):</span>
    106. 

  106. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Returns a dictionary with a time range arguments based on</span>
    107. 

  107. <span class="sd">    ``params[&#39;time_range&#39;]``.</span>
    108. 

  108. 

  109. <span class="sd">    Google Scholar supports a detailed search by year.  Searching by *last</span>
    110. 

  110. <span class="sd">    month* or *last week* (as offered by SearXNG) is uncommon for scientific</span>
    111. 

  111. <span class="sd">    publications and is not supported by Google Scholar.</span>
    112. 

  112. 

  113. <span class="sd">    To limit the result list when the users selects a range, all the SearXNG</span>
    114. 

  114. <span class="sd">    ranges (*day*, *week*, *month*, *year*) are mapped to *year*.  If no range</span>
    115. 

  115. <span class="sd">    is set an empty dictionary of arguments is returned.  Example;  when</span>
    116. 

  116. <span class="sd">    user selects a time range (current year minus one in 2022):</span>
    117. 

  117. 

  118. <span class="sd">    .. code:: python</span>
    119. 

  119. 

  120. <span class="sd">        { &#39;as_ylo&#39; : 2021 }</span>
    121. 

  121. 

  122. <span class="sd">    &quot;&quot;&quot;</span>
    123. 

  123.     <span class="n">ret_val</span> <span class="o">=</span> <span class="p">{}</span>
    124. 

  124.     <span class="k">if</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;time_range&#39;</span><span class="p">]</span> <span class="ow">in</span> <span class="n">time_range_dict</span><span class="p">:</span>
    125. 

  125.         <span class="n">ret_val</span><span class="p">[</span><span class="s1">&#39;as_ylo&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">now</span><span class="p">()</span><span class="o">.</span><span class="n">year</span> <span class="o">-</span> <span class="mi">1</span>
    126. 

  126.     <span class="k">return</span> <span class="n">ret_val</span></div>
    127. 

  127. 

  128. 

  129. 

  130. <div class="viewcode-block" id="detect_google_captcha">
    131. 

  131. <a class="viewcode-back" href="../../../dev/engines/online/google.html#searx.engines.google_scholar.detect_google_captcha">[docs]</a>
    132. 

  132. <span class="k">def</span><span class="w"> </span><span class="nf">detect_google_captcha</span><span class="p">(</span><span class="n">dom</span><span class="p">):</span>
    133. 

  133. <span class="w">    </span><span class="sd">&quot;&quot;&quot;In case of CAPTCHA Google Scholar open its own *not a Robot* dialog and is</span>
    134. 

  134. <span class="sd">    not redirected to ``sorry.google.com``.</span>
    135. 

  135. <span class="sd">    &quot;&quot;&quot;</span>
    136. 

  136.     <span class="k">if</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="s2">&quot;//form[@id=&#39;gs_captcha_f&#39;]&quot;</span><span class="p">):</span>
    137. 

  137.         <span class="k">raise</span> <span class="n">SearxEngineCaptchaException</span><span class="p">()</span></div>
    138. 

  138. 

  139. 

  140. 

  141. <div class="viewcode-block" id="request">
    142. 

  142. <a class="viewcode-back" href="../../../dev/engines/online/google.html#searx.engines.google_scholar.request">[docs]</a>
    143. 

  143. <span class="k">def</span><span class="w"> </span><span class="nf">request</span><span class="p">(</span><span class="n">query</span><span class="p">,</span> <span class="n">params</span><span class="p">):</span>
    144. 

  144. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Google-Scholar search request&quot;&quot;&quot;</span>
    145. 

  145. 

  146.     <span class="n">google_info</span> <span class="o">=</span> <span class="n">get_google_info</span><span class="p">(</span><span class="n">params</span><span class="p">,</span> <span class="n">traits</span><span class="p">)</span>
    147. 

  147.     <span class="c1"># subdomain is: scholar.google.xy</span>
    148. 

  148.     <span class="n">google_info</span><span class="p">[</span><span class="s1">&#39;subdomain&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">google_info</span><span class="p">[</span><span class="s1">&#39;subdomain&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s2">&quot;www.&quot;</span><span class="p">,</span> <span class="s2">&quot;scholar.&quot;</span><span class="p">)</span>
    149. 

  149. 

  150.     <span class="n">args</span> <span class="o">=</span> <span class="p">{</span>
    151. 

  151.         <span class="s1">&#39;q&#39;</span><span class="p">:</span> <span class="n">query</span><span class="p">,</span>
    152. 

  152.         <span class="o">**</span><span class="n">google_info</span><span class="p">[</span><span class="s1">&#39;params&#39;</span><span class="p">],</span>
    153. 

  153.         <span class="s1">&#39;start&#39;</span><span class="p">:</span> <span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="s1">&#39;pageno&#39;</span><span class="p">]</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="o">*</span> <span class="mi">10</span><span class="p">,</span>
    154. 

  154.         <span class="s1">&#39;as_sdt&#39;</span><span class="p">:</span> <span class="s1">&#39;2007&#39;</span><span class="p">,</span>  <span class="c1"># include patents / to disable set &#39;0,5&#39;</span>
    155. 

  155.         <span class="s1">&#39;as_vis&#39;</span><span class="p">:</span> <span class="s1">&#39;0&#39;</span><span class="p">,</span>  <span class="c1"># include citations / to disable set &#39;1&#39;</span>
    156. 

  156.     <span class="p">}</span>
    157. 

  157.     <span class="n">args</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">time_range_args</span><span class="p">(</span><span class="n">params</span><span class="p">))</span>
    158. 

  158. 

  159.     <span class="n">params</span><span class="p">[</span><span class="s1">&#39;url&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;https://&#39;</span> <span class="o">+</span> <span class="n">google_info</span><span class="p">[</span><span class="s1">&#39;subdomain&#39;</span><span class="p">]</span> <span class="o">+</span> <span class="s1">&#39;/scholar?&#39;</span> <span class="o">+</span> <span class="n">urlencode</span><span class="p">(</span><span class="n">args</span><span class="p">)</span>
    160. 

  160.     <span class="n">params</span><span class="p">[</span><span class="s1">&#39;cookies&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">google_info</span><span class="p">[</span><span class="s1">&#39;cookies&#39;</span><span class="p">]</span>
    161. 

  161.     <span class="n">params</span><span class="p">[</span><span class="s1">&#39;headers&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">google_info</span><span class="p">[</span><span class="s1">&#39;headers&#39;</span><span class="p">])</span>
    162. 

  162.     <span class="k">return</span> <span class="n">params</span></div>
    163. 

  163. 

  164. 

  165. 

  166. <div class="viewcode-block" id="parse_gs_a">
    167. 

  167. <a class="viewcode-back" href="../../../dev/engines/online/google.html#searx.engines.google_scholar.parse_gs_a">[docs]</a>
    168. 

  168. <span class="k">def</span><span class="w"> </span><span class="nf">parse_gs_a</span><span class="p">(</span><span class="n">text</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]):</span>
    169. 

  169. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Parse the text written in green.</span>
    170. 

  170. 

  171. <span class="sd">    Possible formats:</span>
    172. 

  172. <span class="sd">    * &quot;{authors} - {journal}, {year} - {publisher}&quot;</span>
    173. 

  173. <span class="sd">    * &quot;{authors} - {year} - {publisher}&quot;</span>
    174. 

  174. <span class="sd">    * &quot;{authors} - {publisher}&quot;</span>
    175. 

  175. <span class="sd">    &quot;&quot;&quot;</span>
    176. 

  176.     <span class="k">if</span> <span class="n">text</span> <span class="ow">is</span> <span class="kc">None</span> <span class="ow">or</span> <span class="n">text</span> <span class="o">==</span> <span class="s2">&quot;&quot;</span><span class="p">:</span>
    177. 

  177.         <span class="k">return</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="kc">None</span>
    178. 

  178. 

  179.     <span class="n">s_text</span> <span class="o">=</span> <span class="n">text</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">&#39; - &#39;</span><span class="p">)</span>
    180. 

  180.     <span class="n">authors</span> <span class="o">=</span> <span class="n">s_text</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">&#39;, &#39;</span><span class="p">)</span>
    181. 

  181.     <span class="n">publisher</span> <span class="o">=</span> <span class="n">s_text</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
    182. 

  182.     <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">s_text</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">3</span><span class="p">:</span>
    183. 

  183.         <span class="k">return</span> <span class="n">authors</span><span class="p">,</span> <span class="kc">None</span><span class="p">,</span> <span class="n">publisher</span><span class="p">,</span> <span class="kc">None</span>
    184. 

  184. 

  185.     <span class="c1"># the format is &quot;{authors} - {journal}, {year} - {publisher}&quot; or &quot;{authors} - {year} - {publisher}&quot;</span>
    186. 

  186.     <span class="c1"># get journal and year</span>
    187. 

  187.     <span class="n">journal_year</span> <span class="o">=</span> <span class="n">s_text</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">&#39;, &#39;</span><span class="p">)</span>
    188. 

  188.     <span class="c1"># journal is optional and may contains some coma</span>
    189. 

  189.     <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">journal_year</span><span class="p">)</span> <span class="o">&gt;</span> <span class="mi">1</span><span class="p">:</span>
    190. 

  190.         <span class="n">journal</span> <span class="o">=</span> <span class="s1">&#39;, &#39;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">journal_year</span><span class="p">[</span><span class="mi">0</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span>
    191. 

  191.         <span class="k">if</span> <span class="n">journal</span> <span class="o">==</span> <span class="s1">&#39;…&#39;</span><span class="p">:</span>
    192. 

  192.             <span class="n">journal</span> <span class="o">=</span> <span class="kc">None</span>
    193. 

  193.     <span class="k">else</span><span class="p">:</span>
    194. 

  194.         <span class="n">journal</span> <span class="o">=</span> <span class="kc">None</span>
    195. 

  195.     <span class="c1"># year</span>
    196. 

  196.     <span class="n">year</span> <span class="o">=</span> <span class="n">journal_year</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
    197. 

  197.     <span class="k">try</span><span class="p">:</span>
    198. 

  198.         <span class="n">publishedDate</span> <span class="o">=</span> <span class="n">datetime</span><span class="o">.</span><span class="n">strptime</span><span class="p">(</span><span class="n">year</span><span class="o">.</span><span class="n">strip</span><span class="p">(),</span> <span class="s1">&#39;%Y&#39;</span><span class="p">)</span>
    199. 

  199.     <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span>
    200. 

  200.         <span class="n">publishedDate</span> <span class="o">=</span> <span class="kc">None</span>
    201. 

  201.     <span class="k">return</span> <span class="n">authors</span><span class="p">,</span> <span class="n">journal</span><span class="p">,</span> <span class="n">publisher</span><span class="p">,</span> <span class="n">publishedDate</span></div>
    202. 

  202. 

  203. 

  204. 

  205. <div class="viewcode-block" id="response">
    206. 

  206. <a class="viewcode-back" href="../../../dev/engines/online/google.html#searx.engines.google_scholar.response">[docs]</a>
    207. 

  207. <span class="k">def</span><span class="w"> </span><span class="nf">response</span><span class="p">(</span><span class="n">resp</span><span class="p">):</span>  <span class="c1"># pylint: disable=too-many-locals</span>
    208. 

  208. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Parse response from Google Scholar&quot;&quot;&quot;</span>
    209. 

  209.     <span class="n">results</span> <span class="o">=</span> <span class="p">[]</span>
    210. 

  210. 

  211.     <span class="c1"># convert the text to dom</span>
    212. 

  212.     <span class="n">dom</span> <span class="o">=</span> <span class="n">html</span><span class="o">.</span><span class="n">fromstring</span><span class="p">(</span><span class="n">resp</span><span class="o">.</span><span class="n">text</span><span class="p">)</span>
    213. 

  213.     <span class="n">detect_google_captcha</span><span class="p">(</span><span class="n">dom</span><span class="p">)</span>
    214. 

  214. 

  215.     <span class="c1"># parse results</span>
    216. 

  216.     <span class="k">for</span> <span class="n">result</span> <span class="ow">in</span> <span class="n">eval_xpath_list</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="s1">&#39;//div[@data-rp]&#39;</span><span class="p">):</span>
    217. 

  217. 

  218.         <span class="n">title</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s1">&#39;.//h3[1]//a&#39;</span><span class="p">))</span>
    219. 

  219. 

  220.         <span class="k">if</span> <span class="ow">not</span> <span class="n">title</span><span class="p">:</span>
    221. 

  221.             <span class="c1"># this is a [ZITATION] block</span>
    222. 

  222.             <span class="k">continue</span>
    223. 

  223. 

  224.         <span class="n">pub_type</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s1">&#39;.//span[@class=&quot;gs_ctg2&quot;]&#39;</span><span class="p">))</span>
    225. 

  225.         <span class="k">if</span> <span class="n">pub_type</span><span class="p">:</span>
    226. 

  226.             <span class="n">pub_type</span> <span class="o">=</span> <span class="n">pub_type</span><span class="p">[</span><span class="mi">1</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
    227. 

  227. 

  228.         <span class="n">url</span> <span class="o">=</span> <span class="n">eval_xpath_getindex</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s1">&#39;.//h3[1]//a/@href&#39;</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
    229. 

  229.         <span class="n">content</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s1">&#39;.//div[@class=&quot;gs_rs&quot;]&#39;</span><span class="p">))</span>
    230. 

  230.         <span class="n">authors</span><span class="p">,</span> <span class="n">journal</span><span class="p">,</span> <span class="n">publisher</span><span class="p">,</span> <span class="n">publishedDate</span> <span class="o">=</span> <span class="n">parse_gs_a</span><span class="p">(</span>
    231. 

  231.             <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s1">&#39;.//div[@class=&quot;gs_a&quot;]&#39;</span><span class="p">))</span>
    232. 

  232.         <span class="p">)</span>
    233. 

  233.         <span class="k">if</span> <span class="n">publisher</span> <span class="ow">in</span> <span class="n">url</span><span class="p">:</span>
    234. 

  234.             <span class="n">publisher</span> <span class="o">=</span> <span class="kc">None</span>
    235. 

  235. 

  236.         <span class="c1"># cited by</span>
    237. 

  237.         <span class="n">comments</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s1">&#39;.//div[@class=&quot;gs_fl&quot;]/a[starts-with(@href,&quot;/scholar?cites=&quot;)]&#39;</span><span class="p">))</span>
    238. 

  238. 

  239.         <span class="c1"># link to the html or pdf document</span>
    240. 

  240.         <span class="n">html_url</span> <span class="o">=</span> <span class="kc">None</span>
    241. 

  241.         <span class="n">pdf_url</span> <span class="o">=</span> <span class="kc">None</span>
    242. 

  242.         <span class="n">doc_url</span> <span class="o">=</span> <span class="n">eval_xpath_getindex</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s1">&#39;.//div[@class=&quot;gs_or_ggsm&quot;]/a/@href&#39;</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span>
    243. 

  243.         <span class="n">doc_type</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s1">&#39;.//span[@class=&quot;gs_ctg2&quot;]&#39;</span><span class="p">))</span>
    244. 

  244.         <span class="k">if</span> <span class="n">doc_type</span> <span class="o">==</span> <span class="s2">&quot;[PDF]&quot;</span><span class="p">:</span>
    245. 

  245.             <span class="n">pdf_url</span> <span class="o">=</span> <span class="n">doc_url</span>
    246. 

  246.         <span class="k">else</span><span class="p">:</span>
    247. 

  247.             <span class="n">html_url</span> <span class="o">=</span> <span class="n">doc_url</span>
    248. 

  248. 

  249.         <span class="n">results</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
    250. 

  250.             <span class="p">{</span>
    251. 

  251.                 <span class="s1">&#39;template&#39;</span><span class="p">:</span> <span class="s1">&#39;paper.html&#39;</span><span class="p">,</span>
    252. 

  252.                 <span class="s1">&#39;type&#39;</span><span class="p">:</span> <span class="n">pub_type</span><span class="p">,</span>
    253. 

  253.                 <span class="s1">&#39;url&#39;</span><span class="p">:</span> <span class="n">url</span><span class="p">,</span>
    254. 

  254.                 <span class="s1">&#39;title&#39;</span><span class="p">:</span> <span class="n">title</span><span class="p">,</span>
    255. 

  255.                 <span class="s1">&#39;authors&#39;</span><span class="p">:</span> <span class="n">authors</span><span class="p">,</span>
    256. 

  256.                 <span class="s1">&#39;publisher&#39;</span><span class="p">:</span> <span class="n">publisher</span><span class="p">,</span>
    257. 

  257.                 <span class="s1">&#39;journal&#39;</span><span class="p">:</span> <span class="n">journal</span><span class="p">,</span>
    258. 

  258.                 <span class="s1">&#39;publishedDate&#39;</span><span class="p">:</span> <span class="n">publishedDate</span><span class="p">,</span>
    259. 

  259.                 <span class="s1">&#39;content&#39;</span><span class="p">:</span> <span class="n">content</span><span class="p">,</span>
    260. 

  260.                 <span class="s1">&#39;comments&#39;</span><span class="p">:</span> <span class="n">comments</span><span class="p">,</span>
    261. 

  261.                 <span class="s1">&#39;html_url&#39;</span><span class="p">:</span> <span class="n">html_url</span><span class="p">,</span>
    262. 

  262.                 <span class="s1">&#39;pdf_url&#39;</span><span class="p">:</span> <span class="n">pdf_url</span><span class="p">,</span>
    263. 

  263.             <span class="p">}</span>
    264. 

  264.         <span class="p">)</span>
    265. 

  265. 

  266.     <span class="c1"># parse suggestion</span>
    267. 

  267.     <span class="k">for</span> <span class="n">suggestion</span> <span class="ow">in</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="s1">&#39;//div[contains(@class, &quot;gs_qsuggest_wrap&quot;)]//li//a&#39;</span><span class="p">):</span>
    268. 

  268.         <span class="c1"># append suggestion</span>
    269. 

  269.         <span class="n">results</span><span class="o">.</span><span class="n">append</span><span class="p">({</span><span class="s1">&#39;suggestion&#39;</span><span class="p">:</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">suggestion</span><span class="p">)})</span>
    270. 

  270. 

  271.     <span class="k">for</span> <span class="n">correction</span> <span class="ow">in</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="s1">&#39;//div[@class=&quot;gs_r gs_pda&quot;]/a&#39;</span><span class="p">):</span>
    272. 

  272.         <span class="n">results</span><span class="o">.</span><span class="n">append</span><span class="p">({</span><span class="s1">&#39;correction&#39;</span><span class="p">:</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">correction</span><span class="p">)})</span>
    273. 

  273. 

  274.     <span class="k">return</span> <span class="n">results</span></div>
    275. 

  275. 

  276. </pre></div>
    277. 

  277. 

  278.             <div class="clearer"></div>
    279. 

  279.           </div>
    280. 

  280.         </div>
    281. 

  281.       </div>
    282. 

  282.   <span id="sidebar-top"></span>
    283. 

  283.       <div class="sphinxsidebar" role="navigation" aria-label="Main">
    284. 

  284.         <div class="sphinxsidebarwrapper">
    285. 

  285.   
    286. 

  286.     
    287. 

  287.             <p class="logo"><a href="../../../index.html">
    288. 

  288.               <img class="logo" src="../../../_static/searxng-wordmark.svg" alt="Logo of SearXNG"/>
    289. 

  289.             </a></p>
    290. 

  290.   
    291. 

  291. 

  292. <h3><a href="../../../index.html">Table of Contents</a></h3>
    293. 

  293. <ul>
    294. 

  294. <li class="toctree-l1"><a class="reference internal" href="../../../user/index.html">User information</a></li>
    295. 

  295. <li class="toctree-l1"><a class="reference internal" href="../../../own-instance.html">Why use a private instance?</a></li>
    296. 

  296. <li class="toctree-l1"><a class="reference internal" href="../../../admin/index.html">Administrator documentation</a></li>
    297. 

  297. <li class="toctree-l1"><a class="reference internal" href="../../../dev/index.html">Developer documentation</a></li>
    298. 

  298. <li class="toctree-l1"><a class="reference internal" href="../../../utils/index.html">DevOps tooling box</a></li>
    299. 

  299. <li class="toctree-l1"><a class="reference internal" href="../../../src/index.html">Source-Code</a></li>
    300. 

  300. </ul>
    301. 

  301. 

  302.   <h3>Project Links</h3>
    303. 

  303.   <ul>
    304. 

  304.     <li><a href="https://github.com/searxng/searxng/tree/master">Source</a>
    305. 

  305.   
    306. 

  306.     <li><a href="https://github.com/searxng/searxng/wiki">Wiki</a>
    307. 

  307.   
    308. 

  308.     <li><a href="https://searx.space">Public instances</a>
    309. 

  309.   
    310. 

  310.     <li><a href="https://github.com/searxng/searxng/issues">Issue Tracker</a>
    311. 

  311.   </ul><h3>Navigation</h3>
    312. 

  312. <ul>
    313. 

  313.   <li><a href="../../../index.html">Overview</a>
    314. 

  314.     <ul>
    315. 

  315.       <li><a href="../../index.html">Module code</a>
    316. 

  316.         <ul>
    317. 

  317.       <li><a href="../engines.html">searx.engines</a>
    318. 

  318.         
    319. 

  319.           
    320. 

  320.           </ul>
    321. 

  321.       </li></ul>
    322. 

  322.       </li>
    323. 

  323.     </ul>
    324. 

  324.   </li>
    325. 

  325. </ul>
    326. 

  326. <search id="searchbox" style="display: none" role="search">
    327. 

  327.   <h3 id="searchlabel">Quick search</h3>
    328. 

  328.     <div class="searchformwrapper">
    329. 

  329.     <form class="search" action="../../../search.html" method="get">
    330. 

  330.       <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/>
    331. 

  331.       <input type="submit" value="Go" />
    332. 

  332.     </form>
    333. 

  333.     </div>
    334. 

  334. </search>
    335. 

  335. <script>document.getElementById('searchbox').style.display = "block"</script>
    336. 

  336.         </div>
    337. 

  337.       </div>
    338. 

  338.       <div class="clearer"></div>
    339. 

  339.     </div>
    340. 

  340.     <div class="footer" role="contentinfo">
    341. 

  341.     &#169; Copyright SearXNG team.
    342. 

  342.     </div>
    343. 

  343.   </body>
    344. 

  344. </html>
    345.
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