an><span
            class="n">right_rotation</span><span class="p">()</span>  <span class="c1">#  Rotation already deals with filiation</span>
                <span class="n">node</span><span class="o">.</span><span class="n">right</span> <span class="o">=</span> <span
            class="bp">self</span><span class="o">.</span><span class="n">_remove</span><span class="p">(</span><span
            class="n">node</span><span class="o">.</span><span class="n">right</span><span class="p">)</span>
            