span class="n">layer_input</span>
            <span class="n">hiddens</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">hidden</span><span class="p">)</span>
            <span class="n">layer_input</span> <span class="o">=</span> <span class="n">hidden</span>

        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">concat_hidden</span><span class="p">:</span>
            <span class="n">node_feature</span> <span c