</span>
            <span class="c1"># info : int</span>

            <span class="n">left_mats</span> <span class="o">=</span> <span class="p">[]</span>
            <span class="n">central_mats</span> <span class="o">=</span> <span class="p">[]</span>
            <span class="n">right_mats</span> <span class="o">=</span> <span class="p">[]</span>

            <span class="k">for</span> <span class="n">mat</span> <span class="ow">in</span> <span class="n">unitary_mats</span><span class="p">:</span>
        