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<div class="section" id="module-torch.utils.model_zoo">
<span id="torch-utils-model-zoo"></span><h1>torch.utils.model_zoo<a class="headerlink" href="#module-torch.utils.model_zoo" title="Permalink to this headline">¶</a></h1>
<dl class="function">
<dt id="torch.utils.model_zoo.load_url">
<code class="descclassname">torch.utils.model_zoo.</code><code class="descname">load_url</code><span class="sig-paren">(</span><em>url</em>, <em>model_dir=None</em>, <em>map_location=None</em>, <em>progress=True</em><span class="sig-paren">)</span><a class="reference internal" href="_modules/torch/utils/model_zoo.html#load_url"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#torch.utils.model_zoo.load_url" title="Permalink to this definition">¶</a></dt>
<dd><p>Loads the Torch serialized object at the given URL.</p>
<p>If the object is already present in <cite>model_dir</cite>, it’s deserialized and
returned. The filename part of the URL should follow the naming convention
<code class="docutils literal"><span class="pre">filename-<sha256>.ext</span></code> where <code class="docutils literal"><span class="pre"><sha256></span></code> is the first eight or more
digits of the SHA256 hash of the contents of the file. The hash is used to
ensure unique names and to verify the contents of the file.</p>
<p>The default value of <cite>model_dir</cite> is <code class="docutils literal"><span class="pre">$TORCH_HOME/models</span></code> where
<code class="docutils literal"><span class="pre">$TORCH_HOME</span></code> defaults to <code class="docutils literal"><span class="pre">~/.torch</span></code>. The default directory can be
overridden with the <code class="docutils literal"><span class="pre">$TORCH_MODEL_ZOO</span></code> environment variable.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><ul class="first last simple">
<li><strong>url</strong> (<a class="reference external" href="https://docs.python.org/3/library/string.html#module-string" title="(in Python v3.7)"><em>string</em></a>) – URL of the object to download</li>
<li><strong>model_dir</strong> (<a class="reference external" href="https://docs.python.org/3/library/string.html#module-string" title="(in Python v3.7)"><em>string</em></a><em>, </em><em>optional</em>) – directory in which to save the object</li>
<li><strong>map_location</strong> (<em>optional</em>) – a function or a dict specifying how to remap storage locations (see torch.load)</li>
<li><strong>progress</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#bool" title="(in Python v3.7)"><em>bool</em></a><em>, </em><em>optional</em>) – whether or not to display a progress bar to stderr</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p class="rubric">Example</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="gp">>>> </span><span class="n">state_dict</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">utils</span><span class="o">.</span><span class="n">model_zoo</span><span class="o">.</span><span class="n">load_url</span><span class="p">(</span><span class="s1">'https://s3.amazonaws.com/pytorch/models/resnet18-5c106cde.pth'</span><span class="p">)</span>
</pre></div>
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