</span>
        <span class="c1"># print(&#39;right_mats\n&#39;, right_mats)</span>

        <span class="n">left</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">zeros</span><span class="p">((</span><span class="n">num_rows</span><span class="p">,</span> <span class="n">num_rows</span><span class="p">),</span> <span class="n">dtype</span><span class="o">=</span><span class="nb">complex</span><span class="p">)</span>
        <span class="n">half_nrows</span> <