</span><span class="p">,</span> <span class="n">D_len</span> <span class="o">=</span> <span class="n">ase</span><span class="o">.</span><span class="n">geometry</span><span class="o">.</span><span class="n">geometry</span><span class="o">.</span><span class="n">get_distances</span><span class="p">(</span>
                <span class="bp">self</span><span class="o">.</span><span class="n">get_positions</span><span class="p">(),</span>
                <span class="n">cell</span><span class="o">=</span><span c