="p">()</span> 
                               <span class="k">if</span> <span class="n">edge</span><span class="o">.</span><span class="n">v1</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">vMap</span> <span class="ow">or</span> <span class="n">edge</span><span class="o">.</span><span class="n">v2</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">