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<div class="language-sh highlighter-rouge"><div class="highlight"><pre class="highlight"><code> brew install pytorch <span class="c"># Here is a small code block</span>
brew install pytorch <span class="c"># Here is a small code block</span>
</code></pre></div></div>
<div class="language-python highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="c"># Here is a large code block with syntax highlighting</span>
<span class="c"># !/usr/bin/python3</span>
<span class="c"># Dictionaries map keys to values.</span>
<span class="n">fred</span> <span class="o">=</span> <span class="p">{</span> <span class="s">'mike'</span><span class="p">:</span> <span class="mi">456</span><span class="p">,</span> <span class="s">'bill'</span><span class="p">:</span> <span class="mi">399</span><span class="p">,</span> <span class="s">'sarah'</span><span class="p">:</span> <span class="mi">521</span> <span class="p">}</span>
<span class="c"># Subscripts.</span>
<span class="k">try</span><span class="p">:</span>
<span class="k">print</span><span class="p">(</span><span class="n">fred</span><span class="p">)</span>
<span class="k">print</span><span class="p">(</span><span class="n">fred</span><span class="p">[</span><span class="s">'bill'</span><span class="p">])</span>
<span class="k">print</span><span class="p">(</span><span class="n">fred</span><span class="p">[</span><span class="s">'nora'</span><span class="p">])</span>
<span class="k">print</span><span class="p">(</span><span class="s">"Won't see this!"</span><span class="p">)</span>
<span class="k">except</span> <span class="nb">KeyError</span> <span class="k">as</span> <span class="n">rest</span><span class="p">:</span>
<span class="k">print</span><span class="p">(</span><span class="s">"Lookup failed:"</span><span class="p">,</span> <span class="n">rest</span><span class="p">)</span>
<span class="k">print</span><span class="p">()</span>
<span class="c"># Entries can be added, udated, or deleted.</span>
<span class="n">fred</span><span class="p">[</span><span class="s">'bill'</span><span class="p">]</span> <span class="o">=</span> <span class="s">'Sopwith Camel'</span>
<span class="n">fred</span><span class="p">[</span><span class="s">'wilma'</span><span class="p">]</span> <span class="o">=</span> <span class="mi">2233</span>
<span class="k">del</span> <span class="n">fred</span><span class="p">[</span><span class="s">'mike'</span><span class="p">]</span>
<span class="k">print</span><span class="p">(</span><span class="n">fred</span><span class="p">)</span>
<span class="k">print</span><span class="p">()</span>
<span class="c"># Get all the keys.</span>
<span class="k">print</span><span class="p">(</span><span class="n">fred</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span>
<span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">fred</span><span class="o">.</span><span class="n">keys</span><span class="p">():</span>
<span class="k">print</span><span class="p">(</span><span class="n">k</span><span class="p">,</span> <span class="s">"=>"</span><span class="p">,</span> <span class="n">fred</span><span class="p">[</span><span class="n">k</span><span class="p">])</span>
<span class="k">print</span><span class="p">()</span>
<span class="c"># Test for presence of a key.</span>
<span class="k">for</span> <span class="n">t</span> <span class="ow">in</span> <span class="p">[</span> <span class="s">'zingo'</span><span class="p">,</span> <span class="s">'sarah'</span><span class="p">,</span> <span class="s">'bill'</span><span class="p">,</span> <span class="s">'wilma'</span> <span class="p">]:</span>
<span class="k">print</span><span class="p">(</span><span class="n">t</span><span class="p">,</span><span class="n">end</span><span class="o">=</span><span class="s">' '</span><span class="p">)</span>
<span class="k">if</span> <span class="n">t</span> <span class="ow">in</span> <span class="n">fred</span><span class="p">:</span>
<span class="k">print</span><span class="p">(</span><span class="s">'=>'</span><span class="p">,</span> <span class="n">fred</span><span class="p">[</span><span class="n">t</span><span class="p">])</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">print</span><span class="p">(</span><span class="s">'is not present.'</span><span class="p">)</span>
</code></pre></div></div>
<p>Here is a table:</p>
<table>
<thead>
<tr>
<th>Data</th>
<th>type torch.dtype</th>
<th>Tensor types</th>
</tr>
</thead>
<tbody>
<tr>
<td>32-bit floating point</td>
<td><code class="highlighter-rouge">torch.float32</code> or <code class="highlighter-rouge">torch.float</code></td>
<td><code class="highlighter-rouge">torch.*.FloatTensor</code></td>
</tr>
<tr>
<td>64-bit floating point</td>
<td><code class="highlighter-rouge">torch.float64</code> or <code class="highlighter-rouge">torch.double</code></td>
<td><code class="highlighter-rouge">torch.*.DoubleTensor</code></td>
</tr>
<tr>
<td>16-bit floating point</td>
<td><code class="highlighter-rouge">torch.float16</code> or <code class="highlighter-rouge">torch.half</code></td>
<td><code class="highlighter-rouge">torch.*.HalfTensor</code></td>
</tr>
<tr>
<td>8-bit integer (unsigned)</td>
<td><code class="highlighter-rouge">torch.uint8</code></td>
<td><code class="highlighter-rouge">torch.*.ByteTensor</code></td>
</tr>
<tr>
<td>8-bit integer (signed)</td>
<td><code class="highlighter-rouge">torch.int8</code></td>
<td><code class="highlighter-rouge">torch.*.CharTensor</code></td>
</tr>
<tr>
<td>16-bit integer (signed)</td>
<td><code class="highlighter-rouge">torch.int16</code> or <code class="highlighter-rouge">torch.short</code></td>
<td><code class="highlighter-rouge">torch.*.ShortTensor</code></td>
</tr>
<tr>
<td>32-bit integer (signed)</td>
<td><code class="highlighter-rouge">torch.int32</code> or <code class="highlighter-rouge">torch.int</code></td>
<td><code class="highlighter-rouge">torch.*.IntTensor</code></td>
</tr>
<tr>
<td>64-bit integer (signed)</td>
<td><code class="highlighter-rouge">torch.int64</code> or <code class="highlighter-rouge">torch.long</code></td>
<td><code class="highlighter-rouge">torch.*.LongTensor</code></td>
</tr>
</tbody>
</table>
</article>
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