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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.yahoo</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;Yahoo Search (Web)</span>
<span class="sd">Languages are supported by mapping the language to a domain. If domain is not</span>
<span class="sd">found in :py:obj:`lang2domain` URL ``&lt;lang&gt;.search.yahoo.com`` is used.</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="p">(</span>
<span class="n">unquote</span><span class="p">,</span>
<span class="n">urlencode</span><span class="p">,</span>
<span class="p">)</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="p">(</span>
<span class="n">eval_xpath_getindex</span><span class="p">,</span>
<span class="n">eval_xpath_list</span><span class="p">,</span>
<span class="n">extract_text</span><span class="p">,</span>
<span class="n">html_to_text</span><span class="p">,</span>
<span class="p">)</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="n">traits</span><span class="p">:</span> <span class="n">EngineTraits</span>
<span class="c1"># about</span>
<span class="n">about</span> <span class="o">=</span> <span class="p">{</span>
<span class="s2">&quot;website&quot;</span><span class="p">:</span> <span class="s1">&#39;https://search.yahoo.com/&#39;</span><span class="p">,</span>
<span class="s2">&quot;wikidata_id&quot;</span><span class="p">:</span> <span class="kc">None</span><span class="p">,</span>
<span class="s2">&quot;official_api_documentation&quot;</span><span class="p">:</span> <span class="s1">&#39;https://developer.yahoo.com/api/&#39;</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="s1">&#39;HTML&#39;</span><span class="p">,</span>
<span class="p">}</span>
<span class="c1"># engine dependent config</span>
<span class="n">categories</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;general&#39;</span><span class="p">,</span> <span class="s1">&#39;web&#39;</span><span class="p">]</span>
<span class="n">paging</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">time_range_support</span> <span class="o">=</span> <span class="kc">True</span>
<span class="c1"># send_accept_language_header = True</span>
<span class="n">time_range_dict</span> <span class="o">=</span> <span class="p">{</span>
<span class="s1">&#39;day&#39;</span><span class="p">:</span> <span class="p">(</span><span class="s1">&#39;1d&#39;</span><span class="p">,</span> <span class="s1">&#39;d&#39;</span><span class="p">),</span>
<span class="s1">&#39;week&#39;</span><span class="p">:</span> <span class="p">(</span><span class="s1">&#39;1w&#39;</span><span class="p">,</span> <span class="s1">&#39;w&#39;</span><span class="p">),</span>
<span class="s1">&#39;month&#39;</span><span class="p">:</span> <span class="p">(</span><span class="s1">&#39;1m&#39;</span><span class="p">,</span> <span class="s1">&#39;m&#39;</span><span class="p">),</span>
<span class="p">}</span>
<span class="n">lang2domain</span> <span class="o">=</span> <span class="p">{</span>
<span class="s1">&#39;zh_chs&#39;</span><span class="p">:</span> <span class="s1">&#39;hk.search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;zh_cht&#39;</span><span class="p">:</span> <span class="s1">&#39;tw.search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;any&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;en&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;bg&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;cs&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;da&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;el&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;et&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;he&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;hr&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;ja&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;ko&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;sk&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="s1">&#39;sl&#39;</span><span class="p">:</span> <span class="s1">&#39;search.yahoo.com&#39;</span><span class="p">,</span>
<span class="p">}</span>
<span class="sd">&quot;&quot;&quot;Map language to domain&quot;&quot;&quot;</span>
<span class="n">locale_aliases</span> <span class="o">=</span> <span class="p">{</span>
<span class="s1">&#39;zh&#39;</span><span class="p">:</span> <span class="s1">&#39;zh_Hans&#39;</span><span class="p">,</span>
<span class="s1">&#39;zh-HK&#39;</span><span class="p">:</span> <span class="s1">&#39;zh_Hans&#39;</span><span class="p">,</span>
<span class="s1">&#39;zh-CN&#39;</span><span class="p">:</span> <span class="s1">&#39;zh_Hans&#39;</span><span class="p">,</span> <span class="c1"># dead since 2015 / routed to hk.search.yahoo.com</span>
<span class="s1">&#39;zh-TW&#39;</span><span class="p">:</span> <span class="s1">&#39;zh_Hant&#39;</span><span class="p">,</span>
<span class="p">}</span>
<div class="viewcode-block" id="request">
<a class="viewcode-back" href="../../../dev/engines/online/yahoo.html#searx.engines.yahoo.request">[docs]</a>
<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="w"> </span><span class="sd">&quot;&quot;&quot;build request&quot;&quot;&quot;</span>
<span class="n">lang</span> <span class="o">=</span> <span class="n">locale_aliases</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="s1">&#39;language&#39;</span><span class="p">],</span> <span class="kc">None</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">lang</span><span class="p">:</span>
<span class="n">lang</span> <span class="o">=</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;language&#39;</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><span class="mi">0</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">lang</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="n">offset</span> <span class="o">=</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">7</span> <span class="o">+</span> <span class="mi">1</span>
<span class="n">age</span><span class="p">,</span> <span class="n">btf</span> <span class="o">=</span> <span class="n">time_range_dict</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="s1">&#39;time_range&#39;</span><span class="p">],</span> <span class="p">(</span><span class="s1">&#39;&#39;</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">))</span>
<span class="n">args</span> <span class="o">=</span> <span class="n">urlencode</span><span class="p">(</span>
<span class="p">{</span>
<span class="s1">&#39;p&#39;</span><span class="p">:</span> <span class="n">query</span><span class="p">,</span>
<span class="s1">&#39;ei&#39;</span><span class="p">:</span> <span class="s1">&#39;UTF-8&#39;</span><span class="p">,</span>
<span class="s1">&#39;fl&#39;</span><span class="p">:</span> <span class="mi">1</span><span class="p">,</span>
<span class="s1">&#39;vl&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_&#39;</span> <span class="o">+</span> <span class="n">lang</span><span class="p">,</span>
<span class="s1">&#39;btf&#39;</span><span class="p">:</span> <span class="n">btf</span><span class="p">,</span>
<span class="s1">&#39;fr2&#39;</span><span class="p">:</span> <span class="s1">&#39;time&#39;</span><span class="p">,</span>
<span class="s1">&#39;age&#39;</span><span class="p">:</span> <span class="n">age</span><span class="p">,</span>
<span class="s1">&#39;b&#39;</span><span class="p">:</span> <span class="n">offset</span><span class="p">,</span>
<span class="s1">&#39;xargs&#39;</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span>
<span class="p">}</span>
<span class="p">)</span>
<span class="n">domain</span> <span class="o">=</span> <span class="n">lang2domain</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">lang</span><span class="p">,</span> <span class="s1">&#39;</span><span class="si">%s</span><span class="s1">.search.yahoo.com&#39;</span> <span class="o">%</span> <span class="n">lang</span><span class="p">)</span>
<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://</span><span class="si">%s</span><span class="s1">/search?</span><span class="si">%s</span><span class="s1">&#39;</span> <span class="o">%</span> <span class="p">(</span><span class="n">domain</span><span class="p">,</span> <span class="n">args</span><span class="p">)</span>
<span class="k">return</span> <span class="n">params</span></div>
<div class="viewcode-block" id="parse_url">
<a class="viewcode-back" href="../../../dev/engines/online/yahoo.html#searx.engines.yahoo.parse_url">[docs]</a>
<span class="k">def</span> <span class="nf">parse_url</span><span class="p">(</span><span class="n">url_string</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;remove yahoo-specific tracking-url&quot;&quot;&quot;</span>
<span class="n">endings</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;/RS&#39;</span><span class="p">,</span> <span class="s1">&#39;/RK&#39;</span><span class="p">]</span>
<span class="n">endpositions</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">start</span> <span class="o">=</span> <span class="n">url_string</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="s1">&#39;http&#39;</span><span class="p">,</span> <span class="n">url_string</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="s1">&#39;/RU=&#39;</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span>
<span class="k">for</span> <span class="n">ending</span> <span class="ow">in</span> <span class="n">endings</span><span class="p">:</span>
<span class="n">endpos</span> <span class="o">=</span> <span class="n">url_string</span><span class="o">.</span><span class="n">rfind</span><span class="p">(</span><span class="n">ending</span><span class="p">)</span>
<span class="k">if</span> <span class="n">endpos</span> <span class="o">&gt;</span> <span class="o">-</span><span class="mi">1</span><span class="p">:</span>
<span class="n">endpositions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">endpos</span><span class="p">)</span>
<span class="k">if</span> <span class="n">start</span> <span class="o">==</span> <span class="mi">0</span> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">endpositions</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="k">return</span> <span class="n">url_string</span>
<span class="n">end</span> <span class="o">=</span> <span class="nb">min</span><span class="p">(</span><span class="n">endpositions</span><span class="p">)</span>
<span class="k">return</span> <span class="n">unquote</span><span class="p">(</span><span class="n">url_string</span><span class="p">[</span><span class="n">start</span><span class="p">:</span><span class="n">end</span><span class="p">])</span></div>
<div class="viewcode-block" id="response">
<a class="viewcode-back" href="../../../dev/engines/online/yahoo.html#searx.engines.yahoo.response">[docs]</a>
<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="w"> </span><span class="sd">&quot;&quot;&quot;parse response&quot;&quot;&quot;</span>
<span class="n">results</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="c1"># parse results</span>
<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[contains(@class,&quot;algo-sr&quot;)]&#39;</span><span class="p">):</span>
<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/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>
<span class="k">if</span> <span class="n">url</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">url</span> <span class="o">=</span> <span class="n">parse_url</span><span class="p">(</span><span class="n">url</span><span class="p">)</span>
<span class="n">title</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//a/@aria-label&#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="s1">&#39;&#39;</span><span class="p">)</span>
<span class="n">title</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">title</span><span class="p">)</span>
<span class="n">content</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[contains(@class, &quot;compText&quot;)]&#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="s1">&#39;&#39;</span><span class="p">)</span>
<span class="n">content</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">content</span><span class="p">,</span> <span class="n">allow_none</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="c1"># append result</span>
<span class="n">results</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
<span class="p">{</span>
<span class="s1">&#39;url&#39;</span><span class="p">:</span> <span class="n">url</span><span class="p">,</span>
<span class="c1"># title sometimes contains HTML tags / see</span>
<span class="c1"># https://github.com/searxng/searxng/issues/3790</span>
<span class="s1">&#39;title&#39;</span><span class="p">:</span> <span class="s2">&quot; &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">html_to_text</span><span class="p">(</span><span class="n">title</span><span class="p">)</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span><span class="o">.</span><span class="n">split</span><span class="p">()),</span>
<span class="s1">&#39;content&#39;</span><span class="p">:</span> <span class="s2">&quot; &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">html_to_text</span><span class="p">(</span><span class="n">content</span><span class="p">)</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span><span class="o">.</span><span class="n">split</span><span class="p">()),</span>
<span class="p">}</span>
<span class="p">)</span>
<span class="k">for</span> <span class="n">suggestion</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[contains(@class, &quot;AlsoTry&quot;)]//table//a&#39;</span><span class="p">):</span>
<span class="c1"># append suggestion</span>
<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>
<span class="k">return</span> <span class="n">results</span></div>
<div class="viewcode-block" id="fetch_traits">
<a class="viewcode-back" href="../../../dev/engines/online/yahoo.html#searx.engines.yahoo.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 from yahoo&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</span> <span class="kn">import</span> <span class="n">network</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;any&#39;</span>
<span class="n">resp</span> <span class="o">=</span> <span class="n">network</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;https://search.yahoo.com/preferences/languages&#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="nb">print</span><span class="p">(</span><span class="s2">&quot;ERROR: response from yahoo 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="n">offset</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="s1">&#39;lang_&#39;</span><span class="p">)</span>
<span class="n">eng2sxng</span> <span class="o">=</span> <span class="p">{</span><span class="s1">&#39;zh_chs&#39;</span><span class="p">:</span> <span class="s1">&#39;zh_Hans&#39;</span><span class="p">,</span> <span class="s1">&#39;zh_cht&#39;</span><span class="p">:</span> <span class="s1">&#39;zh_Hant&#39;</span><span class="p">}</span>
<span class="k">for</span> <span class="n">val</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[contains(@class, &quot;lang-item&quot;)]/input/@value&#39;</span><span class="p">):</span>
<span class="n">eng_tag</span> <span class="o">=</span> <span class="n">val</span><span class="p">[</span><span class="n">offset</span><span class="p">:]</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">sxng_tag</span> <span class="o">=</span> <span class="n">language_tag</span><span class="p">(</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">eng2sxng</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">eng_tag</span><span class="p">,</span> <span class="n">eng_tag</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="nb">print</span><span class="p">(</span><span class="s1">&#39;ERROR: unknown language --&gt; </span><span class="si">%s</span><span class="s1">&#39;</span> <span class="o">%</span> <span class="n">eng_tag</span><span class="p">)</span>
<span class="k">continue</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_tag</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_tag</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_tag</span><span class="p">,</span> <span class="n">conflict</span><span class="p">,</span> <span class="n">eng_tag</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_tag</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_tag</span></div>
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