ass="k">else</span><span class="p">:</span>
      <span class="k">return</span> <span class="bp">False</span>

</div>
  <span class="k">def</span> <span class="nf">__xor__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span>
    <span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    Shorthand for is_equiv.</span>
<span class="sd">    &quot;&quot;&quot;</span>

    <span class="k">if</span> <span class="nb">len</span