an><span class="p">):</span>
        <span class="n">neighborsOfV1</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">neighborCache</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">v1</span><span class="p">,</span> <span class="p">[])</span>
        <span class="n">low</span> <span class="o">=</span> <span class="mi">0</span>
        <span class="n">high</span> <span class="o">=</span> <span class="nb">len</span>