elements = &#39;</span><span class="p">,</span><span class="n">g0</span><span class="p">,</span><span class="s1">&#39; *****&#39;</span><span class="p">)</span>
<span class="w">         </span><span class="n">Xmean</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">X</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="w">      </span><span class="k">else</span>
<span class="k">         </span><span class="nb">sum</span><span