/span><span class="n">_oFile</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_BufferSize</span> <span class="o">=</span> <span class="mi">200</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_itemSetBuffer</span> <span class="o">=</span> <span class="p">[]</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">_mapItemSum</span> <span class="o">=</spa