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<div class="section" id="python-assert">
<h1>python.assert<a class="headerlink" href="#python-assert" title="Permalink to this heading">¶</a></h1>
<div class="section" id="dynamic-shape-assert">
<h2>dynamic_shape_assert<a class="headerlink" href="#dynamic-shape-assert" title="Permalink to this heading">¶</a></h2>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Tags: <a class="reference internal" href="#"><span class="doc">python.assert</span></a></p>
<p>Support Level: SUPPORTED</p>
</div>
<p>Original source code:</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">torch</span>
<span class="k">def</span> <span class="nf">dynamic_shape_assert</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""</span>
<span class="sd"> A basic usage of python assertion.</span>
<span class="sd"> """</span>
<span class="c1"># assertion with error message</span>
<span class="k">assert</span> <span class="n">x</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">></span> <span class="mi">2</span><span class="p">,</span> <span class="sa">f</span><span class="s2">"</span><span class="si">{</span><span class="n">x</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="si">}</span><span class="s2"> is greater than 2"</span>
<span class="c1"># assertion without error message</span>
<span class="k">assert</span> <span class="n">x</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">></span> <span class="mi">1</span>
<span class="k">return</span> <span class="n">x</span>
</pre></div>
</div>
<p>Result:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ExportedProgram</span><span class="p">:</span>
<span class="k">class</span> <span class="nc">GraphModule</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">nn</span><span class="o">.</span><span class="n">Module</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">forward</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">arg0_1</span><span class="p">:</span> <span class="n">f32</span><span class="p">[</span><span class="mi">3</span><span class="p">,</span> <span class="mi">2</span><span class="p">]):</span>
<span class="k">return</span> <span class="p">(</span><span class="n">arg0_1</span><span class="p">,)</span>
<span class="n">Graph</span> <span class="n">Signature</span><span class="p">:</span> <span class="n">ExportGraphSignature</span><span class="p">(</span><span class="n">parameters</span><span class="o">-</span><span class="p">[],</span> <span class="n">buffers</span><span class="o">-</span><span class="p">[],</span> <span class="n">user_inputs</span><span class="o">-</span><span class="p">[</span><span class="s1">'arg0_1'</span><span class="p">],</span> <span class="n">user_outputs</span><span class="o">-</span><span class="p">[</span><span class="s1">'arg0_1'</span><span class="p">],</span> <span class="n">inputs_to_parameters</span><span class="o">-</span><span class="p">{},</span> <span class="n">inputs_to_buffers</span><span class="o">-</span><span class="p">{},</span> <span class="n">buffers_to_mutate</span><span class="o">-</span><span class="p">{},</span> <span class="n">backward_signature</span><span class="o">-</span><span class="kc">None</span><span class="p">,</span> <span class="n">assertion_dep_token</span><span class="o">-</span><span class="kc">None</span><span class="p">)</span>
<span class="n">Symbol</span> <span class="n">to</span> <span class="nb">range</span><span class="p">:</span> <span class="p">{}</span>
</pre></div>
</div>
</div>
<div class="section" id="list-contains">
<h2>list_contains<a class="headerlink" href="#list-contains" title="Permalink to this heading">¶</a></h2>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Tags: <a class="reference internal" href="#"><span class="doc">python.assert</span></a>, <a class="reference internal" href="python.data-structure.html"><span class="doc">python.data-structure</span></a>, <a class="reference internal" href="torch.dynamic-shape.html"><span class="doc">torch.dynamic-shape</span></a></p>
<p>Support Level: SUPPORTED</p>
</div>
<p>Original source code:</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="kn">import</span> <span class="nn">torch</span>
<span class="k">def</span> <span class="nf">list_contains</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""</span>
<span class="sd"> List containment relation can be checked on a dynamic shape or constants.</span>
<span class="sd"> """</span>
<span class="k">assert</span> <span class="n">x</span><span class="o">.</span><span class="n">size</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">)</span> <span class="ow">in</span> <span class="p">[</span><span class="mi">6</span><span class="p">,</span> <span class="mi">2</span><span class="p">]</span>
<span class="k">assert</span> <span class="n">x</span><span class="o">.</span><span class="n">size</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span> <span class="ow">not</span> <span class="ow">in</span> <span class="p">[</span><span class="mi">4</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">6</span><span class="p">]</span>
<span class="k">assert</span> <span class="s2">"monkey"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="p">[</span><span class="s2">"cow"</span><span class="p">,</span> <span class="s2">"pig"</span><span class="p">]</span>
<span class="k">return</span> <span class="n">x</span> <span class="o">+</span> <span class="n">x</span>
</pre></div>
</div>
<p>Result:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ExportedProgram</span><span class="p">:</span>
<span class="k">class</span> <span class="nc">GraphModule</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">nn</span><span class="o">.</span><span class="n">Module</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">forward</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">arg0_1</span><span class="p">:</span> <span class="n">f32</span><span class="p">[</span><span class="mi">3</span><span class="p">,</span> <span class="mi">2</span><span class="p">]):</span>
<span class="c1">#</span>
<span class="n">add</span><span class="p">:</span> <span class="n">f32</span><span class="p">[</span><span class="mi">3</span><span class="p">,</span> <span class="mi">2</span><span class="p">]</span> <span class="o">-</span> <span class="n">torch</span><span class="o">.</span><span class="n">ops</span><span class="o">.</span><span class="n">aten</span><span class="o">.</span><span class="n">add</span><span class="o">.</span><span class="n">Tensor</span><span class="p">(</span><span class="n">arg0_1</span><span class="p">,</span> <span class="n">arg0_1</span><span class="p">);</span> <span class="n">arg0_1</span> <span class="o">-</span> <span class="kc">None</span>
<span class="k">return</span> <span class="p">(</span><span class="n">add</span><span class="p">,)</span>
<span class="n">Graph</span> <span class="n">Signature</span><span class="p">:</span> <span class="n">ExportGraphSignature</span><span class="p">(</span><span class="n">parameters</span><span class="o">-</span><span class="p">[],</span> <span class="n">buffers</span><span class="o">-</span><span class="p">[],</span> <span class="n">user_inputs</span><span class="o">-</span><span class="p">[</span><span class="s1">'arg0_1'</span><span class="p">],</span> <span class="n">user_outputs</span><span class="o">-</span><span class="p">[</span><span class="s1">'add'</span><span class="p">],</span> <span class="n">inputs_to_parameters</span><span class="o">-</span><span class="p">{},</span> <span class="n">inputs_to_buffers</span><span class="o">-</span><span class="p">{},</span> <span class="n">buffers_to_mutate</span><span class="o">-</span><span class="p">{},</span> <span class="n">backward_signature</span><span class="o">-</span><span class="kc">None</span><span class="p">,</span> <span class="n">assertion_dep_token</span><span class="o">-</span><span class="kc">None</span><span class="p">)</span>
<span class="n">Symbol</span> <span class="n">to</span> <span class="nb">range</span><span class="p">:</span> <span class="p">{}</span>
</pre></div>
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