c">None</span><span class="p">:</span>
                <span class="n">fwtfr</span><span class="p">[</span><span class="s1">&#39;xyzw&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">cam</span><span class="o">.</span><span class="n">_CAM_DEFAULT_WHITE_POINT</span>
            <span class="k">if</span> <span class="n">fwtft</span><span class="p">[</span><span class="s1">&#39;xyzw&#39;</span><span class="p">]</span> <span class="ow">is</span> <span class="kc">None</span><span class