span><span class="o">.</span><span class="n">columns</span><span class="p">[</span><span
            class="o">-</span><span class="mi">1</span><span class="p">]:</span>  <span class="c1"># last columns of the table we don&#39;t need the &#39; &amp; &#39;</span>
                            <span class="n">output</span><span class="o">.</span><span class="n">write</span><span
            class="p">(</span><span class="s1">&#39;</span><span class="se">\\</span><span
            class="s1">textbf{&#39;</span> 