class="o">=</span><span class="kc">False</span><span
            class="p">,</span> <span class="n">xlabel</span><span class="o">=</span><span class="s2">&quot;&quot;</span><span
            class="p">,</span> <span class="n">color</span><span class="o">=</span><span class="kc">None</span><span
            class="p">):</span>
    <span class="k">if</span> <span class="n">ax</span> <span class="ow">is</span> <span class="kc">None</span><span
            class="p">:</span>
        <span class="n">fig</span><s