n><span class="n">pb_inner</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="mi">1</span><span class="p">),</span> <span class="n">pb_outer</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="mi">1</span><span class="p">))</span>
                        <span class="p">)</span>
                    <span class="n">generator</span><span class="o">.</span><span class="n">join</span><span class="p">()</span> <span class="c