d atoms.&quot;</span>
                <span class="p">)</span>
            <span class="n">displaced_indices</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="n">n_atoms</span><span class="p">)</span>
            <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">exclude</span><span class="p">)</span> <span class="o">&gt;</span> <span class="mi">0</span><span class="p">: