<span class="p">(</span><span class="n">unknown_classes</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
            <span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Failed to find 'unknown' classes in </span><span class="si">{</span><span class="n">directory</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>


    <span class="n">thread_coun