"n">title</span><span class="p">:</span>
            <span class="n">ax</span><span class="o">.</span><span class="n">set_title</span><span
            class="p">(</span><span class="n">title</span><span class="p">)</span></div>

    <span class="k">def</span> <span class="nf">_balance_down</span><span class="p">(</span><span class="bp">self</span><span
            class="p">,</span> <span class="n">node</span><span class="p">):</span>
        <span class="k">if</span> <span class="n">node</span><span class