 class="n">std</span>
                    <span class="n">prop_grid</span><span class="p">[</span><span class="s2">&quot;min&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="n">i_min</span>
                <span class="k">if</span> <span class="n">i_max</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
                    <span class="n">i_max</span> <span class="o">=</span> <span class="n">true_max</span> <span class="o">+</span> <span class="m