/span> <span class="nb">len</span><span class="p">(</span><span class="n">all_unknown_filenames</span><span class="p">),</span> <span class="mi">1</span><span class="p">)</span>
        <span class="k">for</span> <span class="n">filenames</span> <span class="ow">in</span> <span class="n">all_unknown_filenames</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
            <span class="n">rng</span> <span class="o">=</span> <span class="n">RandomState</span><span class="p">(