 class="p">,</span>
        <span class="p">)</span>
        <span class="n">mlp_inw</span><span class="p">,</span> <span class="n">mlp_inb</span><span class="p">,</span> <span class="n">mlp_inw_attr</span><span class="p">,</span> <span class="n">mlp_inb_attr</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">preprocess</span><span class="p">(</span>
            <span class="n">policy</span><span class="o">.</span><span class="n">mlp_in</span><span class="p">