"o">.</span><span class="n">_diffSets</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="p">[</span><span class="n">supp</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_trans_set</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">value</span><span class="p">)]</span>
                <span class="n">uniqueItem</span><span class="o">.</span