="p">)</span>
        <span class="k">if</span> <span class="n">group_id</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">file_groups</span><span class="p">:</span>
            <span class="n">file_groups</span><span class="p">[</span><span class="n">group_id</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
        <span class="n">file_groups</span><span class="p">[</span><span class="n">group_id</span><span class="p">]</span><span class="o">.</s