>=</span> <span class="kc">None</span>

        <span class="c1"># Create in parallel</span>
        <span class="n">output</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">derivatives_parallel</span><span class="p">(</span>
            <span class="n">inp</span><span class="p">,</span>
            <span class="bp">self</span><span class="o">.</span><span class="n">derivatives_single</span><span class="p">,</span>
            <span class="n">n_jobs</span><s