="o">=</span><span class="kc">False</span><span class="p">,</span>
        <span class="n">return_descriptor</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span>
    <span class="p">):</span>
<span class="w">        </span><span class="sd">&quot;&quot;&quot;Return the numerical derivatives for the given system. This is the</span>
<span class="sd">        default numerical implementation with python. You should overwrite this</span>
<span class="sd">        with a more optimized