       <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_Database</span><span class="p">:</span>
            <span class="n">k</span> <span class="o">+=</span> <span class="mi">1</span>
            <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="n">i</span><span class="p">:</span>
                <span class="k">if</span> <span class="n">j</span><span class="o">.</spa