an class="p">,</span><span class="mi">60</span><span
                                    class="p">],</span>
                   <span class="n">nodes</span> <span class="o">=</span> <span class="p">[</span><span
                                    class="mi">0</span><span class="p">,</span><span class="mi">1</span><span class="p">,</span><span
                                    class="mi">2</span><span class="p">],</span>
                   <span class="n">node_presence</span> <span class="o">=</span> <spa