span><span class="p">,</span> <span class="nb">min</span><span class="p">(</span><span class="mi">20</span><span class="p">,</span> <span class="n">df</span><span class="o">.</span><span class="n">shape</span><span class="p">[</span><span class="mi">1</span><span class="p">])))</span><span class="o">.</span><span class="n">astype</span><span class="p">(</span><span class="nb">int</span><span class="p">)</span>
  <span class="n">df</span> <span class="o">=</span> <span class="n">df</span><span class="o">.</s