_path</span> <span class="o">=</span> <span class="n">Config</span><span class="o">.</span><span class="n">atlas_resources</span><span class="p">[</span><span class="s1">&#39;mouse&#39;</span><span class="p">]</span>

    <span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="n">mouse_atlas_path</span><span class="p">):</span>
        <span clas