 class="nb">len</span><span class="p">(</span><span class="n">primary</span><span class="p">)</span> <span class="o">&gt;</span> <span class="mi">0</span><span class="p">:</span>
                            <span class="n">new_collections</span><span class="o">.</span><span class="n">append</span><span class="p">([</span><span class="n">beta</span><span class="p">,</span> <span class="n">projected_db</span><span class="p">,</span> <span class="n">primary</span><span class="p">,</span> <span class="n">second