turn: Comparision Value</span>

<span class="sd">        :rtype: int</span>
<span class="sd">        &quot;&quot;&quot;</span>
        <span class="n">compare</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_mapItemSum</span><span class="p">[</span><span class="n">o1</span><span class="o">.</span><span class="n">item</span><span class="p">]</span> <span class="o">-</span> <span class="bp">self</span><span class="o">.</span><span class="n">_mapItemSum</span