 class="p">[</span><span class="nb">str</span><span class="p">],</span>
    <span class="n">base_directory</span><span class="p">:</span><span class="nb">str</span>
<span class="p">)</span> <span class="o">-&gt;</span> <span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
<span class="w">    </span><span class="sd">"""Return a list of dataset class names not in the given known_classes"""</span>
    <span class="n">unknown_classes</span> <span class="o">=</sp