="p">)</span>
                <span class="k">else</span><span class="p">:</span>
                    <span class="n">descriptors</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">concatenate</span><span class="p">(</span><span class="n">des_lists</span><span class="p">,</span> <span class="n">axis</span><span class="o">=</span><span class="mi">0</span><span class="p">)</span>
            <span class="k">else</span><span class="p">:</span>
                <span