bp">self</span><span class="p">,</span> <span class="n">minsup</span><span class="p">):</span>
        <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">matrix</span><span class="o">.</span><span class="n">keys</span><span class="p">()):</span>
            <span class="k">for</span> <span class="n">subkey</span><span class="p">,</span> <span class="n">value</