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<section id="module-searx.engines">
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<span id="searxng-s-engines-loader"></span><span id="searx-engines-loader"></span><h1>SearXNG’s engines loader<a class="headerlink" href="#module-searx.engines" title="Link to this heading">¶</a></h1>
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<p>Load and initialize the <code class="docutils literal notranslate"><span class="pre">engines</span></code>, see <a class="reference internal" href="#searx.engines.load_engines" title="searx.engines.load_engines"><code class="xref py py-func docutils literal notranslate"><span class="pre">load_engines()</span></code></a> and register
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<a class="reference internal" href="#searx.engines.engine_shortcuts" title="searx.engines.engine_shortcuts"><code class="xref py py-obj docutils literal notranslate"><span class="pre">engine_shortcuts</span></code></a>.</p>
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<p>usage:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">load_engines</span><span class="p">(</span> <span class="n">settings</span><span class="p">[</span><span class="s1">'engines'</span><span class="p">]</span> <span class="p">)</span>
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</pre></div>
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</div>
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<dl class="py function">
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<dt class="sig sig-object py" id="searx.engines.is_missing_required_attributes">
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<span class="sig-prename descclassname"><span class="pre">searx.engines.</span></span><span class="sig-name descname"><span class="pre">is_missing_required_attributes</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">engine</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../../_modules/searx/engines.html#is_missing_required_attributes"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#searx.engines.is_missing_required_attributes" title="Link to this definition">¶</a></dt>
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<dd><p>An attribute is required when its name doesn’t start with <code class="docutils literal notranslate"><span class="pre">_</span></code> (underline).
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Required attributes must not be <code class="docutils literal notranslate"><span class="pre">None</span></code>.</p>
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</dd></dl>
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<dl class="py function">
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<dt class="sig sig-object py" id="searx.engines.load_engine">
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<span class="sig-prename descclassname"><span class="pre">searx.engines.</span></span><span class="sig-name descname"><span class="pre">load_engine</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">engine_data</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#dict" title="(in Python v3.12)"><span class="pre">dict</span></a></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><a class="reference internal" href="enginelib.html#searx.enginelib.Engine" title="searx.enginelib.Engine"><span class="pre">Engine</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><a class="reference external" href="https://docs.python.org/3/library/types.html#types.ModuleType" title="(in Python v3.12)"><span class="pre">types.ModuleType</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><a class="reference external" href="https://docs.python.org/3/library/constants.html#None" title="(in Python v3.12)"><span class="pre">None</span></a></span></span><a class="reference internal" href="../../_modules/searx/engines.html#load_engine"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#searx.engines.load_engine" title="Link to this definition">¶</a></dt>
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<dd><p>Load engine from <code class="docutils literal notranslate"><span class="pre">engine_data</span></code>.</p>
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<dl class="field-list simple">
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<dt class="field-odd">Parameters<span class="colon">:</span></dt>
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<dd class="field-odd"><p><strong>engine_data</strong> (<a class="reference external" href="https://docs.python.org/3/library/stdtypes.html#dict" title="(in Python v3.12)"><em>dict</em></a>) – Attributes from YAML <code class="docutils literal notranslate"><span class="pre">settings:engines/<engine></span></code></p>
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</dd>
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<dt class="field-even">Returns<span class="colon">:</span></dt>
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<dd class="field-even"><p>initialized namespace of the <code class="docutils literal notranslate"><span class="pre"><engine></span></code>.</p>
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</dd>
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</dl>
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<ol class="arabic simple">
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<li><p>create a namespace and load module of the <code class="docutils literal notranslate"><span class="pre"><engine></span></code></p></li>
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<li><p>update namespace with the defaults from <code class="xref py py-obj docutils literal notranslate"><span class="pre">ENGINE_DEFAULT_ARGS</span></code></p></li>
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<li><p>update namespace with values from <code class="docutils literal notranslate"><span class="pre">engine_data</span></code></p></li>
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</ol>
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<p>If engine <em>is active</em>, return namespace of the engine, otherwise return
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<code class="docutils literal notranslate"><span class="pre">None</span></code>.</p>
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<p>This function also returns <code class="docutils literal notranslate"><span class="pre">None</span></code> if initialization of the namespace fails
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for one of the following reasons:</p>
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<ul class="simple">
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<li><p>engine name contains underscore</p></li>
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<li><p>engine name is not lowercase</p></li>
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<li><p>required attribute is not set <a class="reference internal" href="#searx.engines.is_missing_required_attributes" title="searx.engines.is_missing_required_attributes"><code class="xref py py-func docutils literal notranslate"><span class="pre">is_missing_required_attributes()</span></code></a></p></li>
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</ul>
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</dd></dl>
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<dl class="py function">
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<dt class="sig sig-object py" id="searx.engines.load_engines">
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<span class="sig-prename descclassname"><span class="pre">searx.engines.</span></span><span class="sig-name descname"><span class="pre">load_engines</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">engine_list</span></span></em><span class="sig-paren">)</span><a class="reference internal" href="../../_modules/searx/engines.html#load_engines"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#searx.engines.load_engines" title="Link to this definition">¶</a></dt>
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<dd><p>usage: <code class="docutils literal notranslate"><span class="pre">engine_list</span> <span class="pre">=</span> <span class="pre">settings['engines']</span></code></p>
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</dd></dl>
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<dl class="py function">
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<dt class="sig sig-object py" id="searx.engines.using_tor_proxy">
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<span class="sig-prename descclassname"><span class="pre">searx.engines.</span></span><span class="sig-name descname"><span class="pre">using_tor_proxy</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">engine</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="enginelib.html#searx.enginelib.Engine" title="searx.enginelib.Engine"><span class="pre">Engine</span></a><span class="w"> </span><span class="p"><span class="pre">|</span></span><span class="w"> </span><a class="reference external" href="https://docs.python.org/3/library/types.html#types.ModuleType" title="(in Python v3.12)"><span class="pre">types.ModuleType</span></a></span></em><span class="sig-paren">)</span><a class="reference internal" href="../../_modules/searx/engines.html#using_tor_proxy"><span class="viewcode-link"><span class="pre">[source]</span></span></a><a class="headerlink" href="#searx.engines.using_tor_proxy" title="Link to this definition">¶</a></dt>
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<dd><p>Return True if the engine configuration declares to use Tor.</p>
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</dd></dl>
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<dl class="py data">
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<dt class="sig sig-object py" id="searx.engines.engine_shortcuts">
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<span class="sig-prename descclassname"><span class="pre">searx.engines.</span></span><span class="sig-name descname"><span class="pre">engine_shortcuts</span></span><a class="headerlink" href="#searx.engines.engine_shortcuts" title="Link to this definition">¶</a></dt>
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<dd><p>Simple map of registered <em>shortcuts</em> to name of the engine (or <code class="docutils literal notranslate"><span class="pre">None</span></code>).</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">engine_shortcuts</span><span class="p">[</span><span class="n">engine</span><span class="o">.</span><span class="n">shortcut</span><span class="p">]</span> <span class="o">=</span> <span class="n">engine</span><span class="o">.</span><span class="n">name</span>
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</pre></div>
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<h3><a href="../../index.html">Table of Contents</a></h3>
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<li class="toctree-l1"><a class="reference internal" href="../../user/index.html">User information</a></li>
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<li class="toctree-l1"><a class="reference internal" href="../../own-instance.html">Why use a private instance?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="enginelib.html">Engine Library</a></li>
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<li class="toctree-l3 current"><a class="current reference internal" href="#">SearXNG’s engines loader</a><ul>
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<li class="toctree-l4"><a class="reference internal" href="#searx.engines.is_missing_required_attributes"><code class="docutils literal notranslate"><span class="pre">is_missing_required_attributes()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="#searx.engines.load_engine"><code class="docutils literal notranslate"><span class="pre">load_engine()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="#searx.engines.load_engines"><code class="docutils literal notranslate"><span class="pre">load_engines()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="#searx.engines.using_tor_proxy"><code class="docutils literal notranslate"><span class="pre">using_tor_proxy()</span></code></a></li>
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<li class="toctree-l4"><a class="reference internal" href="#searx.engines.engine_shortcuts"><code class="docutils literal notranslate"><span class="pre">engine_shortcuts</span></code></a></li>
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<li class="toctree-l3"><a class="reference internal" href="engine_overview.html">Engine Overview</a></li>
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<li class="toctree-l3"><a class="reference internal" href="index.html#engine-types">Engine Types</a></li>
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<li class="toctree-l2"><a class="reference internal" href="../search_api.html">Search API</a></li>
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