P</span><span class="o">+</span><span class="n">vN</span><span class="p">),</span> <span class="n">np</span><span class="o">.</span><span class="n">array</span><span class="p">(</span><span class="n">cP</span><span class="o">+</span><span class="n">cN</span><span class="p">)</span> <span class="p">)</span>
		<span class="k">assert</span><span class="p">(</span><span class="bp">cls</span><span class="o">.</span><span class="n">coef0</span> <span class="o">==</span> <span class="mf">0.0</span><span class="p">