"n">html</span> <span class="o">+=</span> <span class="n">plotly_hack</span><span class="p">(</span><span class="n">my_spectrogram</span><span class="p">(</span><span class="n">df</span><span class="p">,</span> <span class="nb">int</span><span class="p">(</span><span class="n">i</span><span class="p">),</span> <span class="mi">500</span><span class="p">))</span>
    <span class="nb">print</span> <span class="s2">&quot;    spectrogram made for &quot;</span> <span class="o">+</span> <span class="nb">str</span