       <span class="nb">print</span><span class="p">(</span><span class="s2">&quot;ERROR: Unkown event group: </span><span class="si">{}</span><span class="s2"> &quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">group</span><span class="p">))</span>
        <span class="n">sys</span><span class="o">.</span><span class="n">exit</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>


    <span class="k">return</span> <span class=