><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">==</span> <span class="nb">len</span><span class="p">(</span><span class="n">other</span><span class="p">):</span>
      
      <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_equiv</span><span class="p">(</span><span class="n">other</span><span class="p">)</span>


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