ass="n">cP</span> <span class="o">=</span> <span class="p">[</span> <span class="mf">1.0</span> <span class="k">for</span> <span class="n">_</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">vP</span><span class="p">))</span> <span class="p">]</span>
		<span class="n">cN</span> <span class="o">=</span> <span class="p">[</span> <span class="o">-</span><span class="mf">1.0</span> <span class="k">for</span> 