">len</span><span class="p">(</span><span class="n">job</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
            <span class="k">else</span><span class="p">:</span>
                <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">average</span> <span class="o">==</span> <span class="s2">&quot;off&quot;</span><span class="p">:</span>
                    <span class="n">n_centers</span> <span class="o">=</span> <span class="nb">l