lass="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">create_single</span><span class="p">(</span><span class="n">system_disturbed</span><span class="p">,</span> <span class="p">[</span><span class="n">center</span><span class="p">])</span>
                        <span class="n">d</span><span class="p">[</span><span class="n">i_center</span><span class="p">,</span> <span class="n">index</span><span class="p">,</span> <span class="n">i_comp</span><span class="p">,</span> <spa