span class="o">.</span><span class="n">_maxPer</span><span class="p">)</span>
        <span class="k">for</span> <span class="n">item1</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_mapItemSum</span><span class="o">.</span><span class="n">keys</span><span class="p">():</span>
            <span class="n">item</span> <span class="o">=</span> <span class="n">item1</span>
            <span class="k">if</span> <span class="bp">self</span><span class="o">.</