an class="p">):</span>
        <span class="n">RO</span> <span class="o">*=</span> <span class="p">(</span><span class="n">it</span><span class="o">.</span><span class="n">is_equiv</span><span class="p">(</span><span class="n">other</span><span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="p">)</span> <span class="p">)</span>
      <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">RO</span><span class="p">)</span>
    <span cl