an><span class="n">extend</span><span class="p">([</span><span class="s1">&#39;macd_EMA_12&#39;</span><span class="p">,</span>
                        <span class="s1">&#39;macd_EMA_26&#39;</span><span class="p">,</span>
                        <span class="s1">&#39;macd_DIF&#39;</span><span class="p">,</span>
                        <span class="s1">&#39;macd_DEM&#39;</span><span class="p">,</span>
                        <span class="s1">&#39;macd_OSC&#39;</span><span class="p">])</span>
                <