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[doc] build from commit fa108c140fb8fe523e9be432f6e92c6812acc6ea
2024-10-31 12:36:39 +00:00
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<h1>Source code for searx.engines.annas_archive</h1><div class="highlight"><pre>
<span></span><span class="c1"># SPDX-License-Identifier: AGPL-3.0-or-later</span>
<span class="sd">&quot;&quot;&quot;`Anna&#39;s Archive`_ is a free non-profit online shadow library metasearch</span>
<span class="sd">engine providing access to a variety of book resources (also via IPFS), created</span>
<span class="sd">by a team of anonymous archivists (AnnaArchivist_).</span>
<span class="sd">.. _Anna&#39;s Archive: https://annas-archive.org/</span>
<span class="sd">.. _AnnaArchivist: https://annas-software.org/AnnaArchivist/annas-archive</span>
<span class="sd">Configuration</span>
<span class="sd">=============</span>
<span class="sd">The engine has the following additional settings:</span>
<span class="sd">- :py:obj:`aa_content`</span>
<span class="sd">- :py:obj:`aa_ext`</span>
<span class="sd">- :py:obj:`aa_sort`</span>
<span class="sd">With this options a SearXNG maintainer is able to configure **additional**</span>
<span class="sd">engines for specific searches in Anna&#39;s Archive. For example a engine to search</span>
<span class="sd">for *newest* articles and journals (PDF) / by shortcut ``!aaa &lt;search-term&gt;``.</span>
<span class="sd">.. code:: yaml</span>
<span class="sd"> - name: annas articles</span>
<span class="sd"> engine: annas_archive</span>
<span class="sd"> shortcut: aaa</span>
<span class="sd"> aa_content: &#39;magazine&#39;</span>
<span class="sd"> aa_ext: &#39;pdf&#39;</span>
<span class="sd"> aa_sort: &#39;newest&#39;</span>
<span class="sd">Implementations</span>
<span class="sd">===============</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">List</span><span class="p">,</span> <span class="n">Dict</span><span class="p">,</span> <span class="n">Any</span><span class="p">,</span> <span class="n">Optional</span>
<span class="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">quote</span>
<span class="kn">from</span> <span class="nn">lxml</span> <span class="kn">import</span> <span class="n">html</span>
<span class="kn">from</span> <span class="nn">searx.utils</span> <span class="kn">import</span> <span class="n">extract_text</span><span class="p">,</span> <span class="n">eval_xpath</span><span class="p">,</span> <span class="n">eval_xpath_list</span>
<span class="kn">from</span> <span class="nn">searx.enginelib.traits</span> <span class="kn">import</span> <span class="n">EngineTraits</span>
<span class="kn">from</span> <span class="nn">searx.data</span> <span class="kn">import</span> <span class="n">ENGINE_TRAITS</span>
<span class="c1"># about</span>
<span class="n">about</span><span class="p">:</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span>
<span class="s2">&quot;website&quot;</span><span class="p">:</span> <span class="s2">&quot;https://annas-archive.org/&quot;</span><span class="p">,</span>
<span class="s2">&quot;wikidata_id&quot;</span><span class="p">:</span> <span class="s2">&quot;Q115288326&quot;</span><span class="p">,</span>
<span class="s2">&quot;official_api_documentation&quot;</span><span class="p">:</span> <span class="kc">None</span><span class="p">,</span>
<span class="s2">&quot;use_official_api&quot;</span><span class="p">:</span> <span class="kc">False</span><span class="p">,</span>
<span class="s2">&quot;require_api_key&quot;</span><span class="p">:</span> <span class="kc">False</span><span class="p">,</span>
<span class="s2">&quot;results&quot;</span><span class="p">:</span> <span class="s2">&quot;HTML&quot;</span><span class="p">,</span>
<span class="p">}</span>
<span class="c1"># engine dependent config</span>
<span class="n">categories</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">[</span><span class="s2">&quot;files&quot;</span><span class="p">]</span>
<span class="n">paging</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span>
<span class="c1"># search-url</span>
<span class="n">base_url</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">&quot;https://annas-archive.org&quot;</span>
<span class="n">aa_content</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span>
<span class="sd">&quot;&quot;&quot;Anan&#39;s search form field **Content** / possible values::</span>
<span class="sd"> book_fiction, book_unknown, book_nonfiction,</span>
<span class="sd"> book_comic, magazine, standards_document</span>
<span class="sd">To not filter use an empty string (default).</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="n">aa_sort</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s1">&#39;&#39;</span>
<span class="sd">&quot;&quot;&quot;Sort Anna&#39;s results, possible values::</span>
<span class="sd"> newest, oldest, largest, smallest</span>
<span class="sd">To sort by *most relevant* use an empty string (default).&quot;&quot;&quot;</span>
<span class="n">aa_ext</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s1">&#39;&#39;</span>
<span class="sd">&quot;&quot;&quot;Filter Anna&#39;s results by a file ending. Common filters for example are</span>
<span class="sd">``pdf`` and ``epub``.</span>
<span class="sd">.. note::</span>
<span class="sd"> Anna&#39;s Archive is a beta release: Filter results by file extension does not</span>
<span class="sd"> really work on Anna&#39;s Archive.</span>
<span class="sd">&quot;&quot;&quot;</span>
<div class="viewcode-block" id="init">
<a class="viewcode-back" href="../../../dev/engines/online/annas_archive.html#searx.engines.annas_archive.init">[docs]</a>
<span class="k">def</span> <span class="nf">init</span><span class="p">(</span><span class="n">engine_settings</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> <span class="c1"># pylint: disable=unused-argument</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Check of engine&#39;s settings.&quot;&quot;&quot;</span>
<span class="n">traits</span> <span class="o">=</span> <span class="n">EngineTraits</span><span class="p">(</span><span class="o">**</span><span class="n">ENGINE_TRAITS</span><span class="p">[</span><span class="s1">&#39;annas archive&#39;</span><span class="p">])</span>
<span class="k">if</span> <span class="n">aa_content</span> <span class="ow">and</span> <span class="n">aa_content</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;content&#39;</span><span class="p">]:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="sa">f</span><span class="s1">&#39;invalid setting content: </span><span class="si">{</span><span class="n">aa_content</span><span class="si">}</span><span class="s1">&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="n">aa_sort</span> <span class="ow">and</span> <span class="n">aa_sort</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;sort&#39;</span><span class="p">]:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="sa">f</span><span class="s1">&#39;invalid setting sort: </span><span class="si">{</span><span class="n">aa_sort</span><span class="si">}</span><span class="s1">&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="n">aa_ext</span> <span class="ow">and</span> <span class="n">aa_ext</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;ext&#39;</span><span class="p">]:</span>
<span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="sa">f</span><span class="s1">&#39;invalid setting ext: </span><span class="si">{</span><span class="n">aa_ext</span><span class="si">}</span><span class="s1">&#39;</span><span class="p">)</span></div>
<span class="k">def</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> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">])</span> <span class="o">-&gt;</span> <span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Any</span><span class="p">]:</span>
<span class="n">q</span> <span class="o">=</span> <span class="n">quote</span><span class="p">(</span><span class="n">query</span><span class="p">)</span>
<span class="n">lang</span> <span class="o">=</span> <span class="n">traits</span><span class="o">.</span><span class="n">get_language</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="s2">&quot;language&quot;</span><span class="p">],</span> <span class="n">traits</span><span class="o">.</span><span class="n">all_locale</span><span class="p">)</span> <span class="c1"># type: ignore</span>
<span class="n">params</span><span class="p">[</span><span class="s2">&quot;url&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="n">base_url</span> <span class="o">+</span> <span class="sa">f</span><span class="s2">&quot;/search?lang=</span><span class="si">{</span><span class="n">lang</span><span class="w"> </span><span class="ow">or</span><span class="w"> </span><span class="s1">&#39;&#39;</span><span class="si">}</span><span class="s2">&amp;content=</span><span class="si">{</span><span class="n">aa_content</span><span class="si">}</span><span class="s2">&amp;ext=</span><span class="si">{</span><span class="n">aa_ext</span><span class="si">}</span><span class="s2">&amp;sort=</span><span class="si">{</span><span class="n">aa_sort</span><span class="si">}</span><span class="s2">&amp;q=</span><span class="si">{</span><span class="n">q</span><span class="si">}</span><span class="s2">&quot;</span>
<span class="k">return</span> <span class="n">params</span>
<span class="k">def</span> <span class="nf">response</span><span class="p">(</span><span class="n">resp</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">List</span><span class="p">[</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]]]:</span>
<span class="n">results</span><span class="p">:</span> <span class="n">List</span><span class="p">[</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]]]</span> <span class="o">=</span> <span class="p">[]</span>
<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>
<span class="k">for</span> <span class="n">item</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;//main//div[contains(@class, &quot;h-[125]&quot;)]/a&#39;</span><span class="p">):</span>
<span class="n">results</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">_get_result</span><span class="p">(</span><span class="n">item</span><span class="p">))</span>
<span class="c1"># The rendering of the WEB page is very strange; except the first position</span>
<span class="c1"># all other positions of Anna&#39;s result page are enclosed in SGML comments.</span>
<span class="c1"># These comments are *uncommented* by some JS code, see query of class</span>
<span class="c1"># &#39;.js-scroll-hidden&#39; in Anna&#39;s HTML template:</span>
<span class="c1"># https://annas-software.org/AnnaArchivist/annas-archive/-/blob/main/allthethings/templates/macros/md5_list.html</span>
<span class="k">for</span> <span class="n">item</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;//main//div[contains(@class, &quot;js-scroll-hidden&quot;)]&#39;</span><span class="p">):</span>
<span class="n">item</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">item</span><span class="o">.</span><span class="n">xpath</span><span class="p">(</span><span class="s1">&#39;./comment()&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">text</span><span class="p">)</span>
<span class="n">results</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">_get_result</span><span class="p">(</span><span class="n">item</span><span class="p">))</span>
<span class="k">return</span> <span class="n">results</span>
<span class="k">def</span> <span class="nf">_get_result</span><span class="p">(</span><span class="n">item</span><span class="p">):</span>
<span class="k">return</span> <span class="p">{</span>
<span class="s1">&#39;template&#39;</span><span class="p">:</span> <span class="s1">&#39;paper.html&#39;</span><span class="p">,</span>
<span class="s1">&#39;url&#39;</span><span class="p">:</span> <span class="n">base_url</span> <span class="o">+</span> <span class="n">item</span><span class="o">.</span><span class="n">xpath</span><span class="p">(</span><span class="s1">&#39;./@href&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">],</span>
<span class="s1">&#39;title&#39;</span><span class="p">:</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">item</span><span class="p">,</span> <span class="s1">&#39;.//h3/text()[1]&#39;</span><span class="p">)),</span>
<span class="s1">&#39;publisher&#39;</span><span class="p">:</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">item</span><span class="p">,</span> <span class="s1">&#39;.//div[contains(@class, &quot;text-sm&quot;)]&#39;</span><span class="p">)),</span>
<span class="s1">&#39;authors&#39;</span><span class="p">:</span> <span class="p">[</span><span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">item</span><span class="p">,</span> <span class="s1">&#39;.//div[contains(@class, &quot;italic&quot;)]&#39;</span><span class="p">))],</span>
<span class="s1">&#39;content&#39;</span><span class="p">:</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">item</span><span class="p">,</span> <span class="s1">&#39;.//div[contains(@class, &quot;text-xs&quot;)]&#39;</span><span class="p">)),</span>
<span class="s1">&#39;thumbnail&#39;</span><span class="p">:</span> <span class="n">item</span><span class="o">.</span><span class="n">xpath</span><span class="p">(</span><span class="s1">&#39;.//img/@src&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">],</span>
<span class="p">}</span>
<div class="viewcode-block" id="fetch_traits">
<a class="viewcode-back" href="../../../dev/engines/online/annas_archive.html#searx.engines.annas_archive.fetch_traits">[docs]</a>
<span class="k">def</span> <span class="nf">fetch_traits</span><span class="p">(</span><span class="n">engine_traits</span><span class="p">:</span> <span class="n">EngineTraits</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Fetch languages and other search arguments from Anna&#39;s search form.&quot;&quot;&quot;</span>
<span class="c1"># pylint: disable=import-outside-toplevel</span>
<span class="kn">import</span> <span class="nn">babel</span>
<span class="kn">from</span> <span class="nn">searx.network</span> <span class="kn">import</span> <span class="n">get</span> <span class="c1"># see https://github.com/searxng/searxng/issues/762</span>
<span class="kn">from</span> <span class="nn">searx.locales</span> <span class="kn">import</span> <span class="n">language_tag</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">all_locale</span> <span class="o">=</span> <span class="s1">&#39;&#39;</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;content&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;ext&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;sort&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">resp</span> <span class="o">=</span> <span class="n">get</span><span class="p">(</span><span class="n">base_url</span> <span class="o">+</span> <span class="s1">&#39;/search&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">resp</span><span class="o">.</span><span class="n">ok</span><span class="p">:</span> <span class="c1"># type: ignore</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s2">&quot;Response from Anna&#39;s search page is not OK.&quot;</span><span class="p">)</span>
<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> <span class="c1"># type: ignore</span>
<span class="c1"># supported language codes</span>
<span class="n">lang_map</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">x</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="s2">&quot;//form//input[@name=&#39;lang&#39;]&quot;</span><span class="p">):</span>
<span class="n">eng_lang</span> <span class="o">=</span> <span class="n">x</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;value&quot;</span><span class="p">)</span>
<span class="k">if</span> <span class="n">eng_lang</span> <span class="ow">in</span> <span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">,</span> <span class="s1">&#39;_empty&#39;</span><span class="p">,</span> <span class="s1">&#39;nl-BE&#39;</span><span class="p">,</span> <span class="s1">&#39;und&#39;</span><span class="p">):</span>
<span class="k">continue</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">locale</span> <span class="o">=</span> <span class="n">babel</span><span class="o">.</span><span class="n">Locale</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="n">lang_map</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">eng_lang</span><span class="p">,</span> <span class="n">eng_lang</span><span class="p">),</span> <span class="n">sep</span><span class="o">=</span><span class="s1">&#39;-&#39;</span><span class="p">)</span>
<span class="k">except</span> <span class="n">babel</span><span class="o">.</span><span class="n">UnknownLocaleError</span><span class="p">:</span>
<span class="c1"># silently ignore unknown languages</span>
<span class="c1"># print(&quot;ERROR: %s -&gt; %s is unknown by babel&quot; % (x.get(&quot;data-name&quot;), eng_lang))</span>
<span class="k">continue</span>
<span class="n">sxng_lang</span> <span class="o">=</span> <span class="n">language_tag</span><span class="p">(</span><span class="n">locale</span><span class="p">)</span>
<span class="n">conflict</span> <span class="o">=</span> <span class="n">engine_traits</span><span class="o">.</span><span class="n">languages</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">sxng_lang</span><span class="p">)</span>
<span class="k">if</span> <span class="n">conflict</span><span class="p">:</span>
<span class="k">if</span> <span class="n">conflict</span> <span class="o">!=</span> <span class="n">eng_lang</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;CONFLICT: babel </span><span class="si">%s</span><span class="s2"> --&gt; </span><span class="si">%s</span><span class="s2">, </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="p">(</span><span class="n">sxng_lang</span><span class="p">,</span> <span class="n">conflict</span><span class="p">,</span> <span class="n">eng_lang</span><span class="p">))</span>
<span class="k">continue</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">languages</span><span class="p">[</span><span class="n">sxng_lang</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_lang</span>
<span class="k">for</span> <span class="n">x</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="s2">&quot;//form//input[@name=&#39;content&#39;]&quot;</span><span class="p">):</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;content&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">x</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;value&quot;</span><span class="p">))</span>
<span class="k">for</span> <span class="n">x</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="s2">&quot;//form//input[@name=&#39;ext&#39;]&quot;</span><span class="p">):</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;ext&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">x</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;value&quot;</span><span class="p">))</span>
<span class="k">for</span> <span class="n">x</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="s2">&quot;//form//select[@name=&#39;sort&#39;]//option&quot;</span><span class="p">):</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;sort&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">x</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;value&quot;</span><span class="p">))</span>
<span class="c1"># for better diff; sort the persistence of these traits</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;content&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">sort</span><span class="p">()</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;ext&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">sort</span><span class="p">()</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;sort&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">sort</span><span class="p">()</span></div>
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