</span><span class="s2">&quot;square(7);&quot;</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="n">result</span><span class="p">)</span>  <span class="c1"># 49</span>
</code></pre></div></p>
<p><strong>Example: Grapa calling back into Python</strong>
<div class="highlight"><pre><span></span><code><span class="k">def</span><span class="w"> </span><span class="nf">pytrace</span><span class="p">(</span><span class="n">n</span><span class="p">):</span>
    <span c