<span class="n">outKeys</span><span class="p">:</span>
                    <span class="k">assert</span> <span class="nb">len</span><span class="p">(</span><span class="n">so_res</span><span class="p">[</span><span class="n">key</span><span class="p">]</span><span class="o">.</span><span class="n">shape</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span>
                    <span class="k">assert</span> <span class="n">so_res</span><span class="p">[</span><span class="n">key</