pan> <span class="n">n_chrom</span><span class="o">+</span><span class="n">k</span>
        <span class="k">if</span> <span class="n">k</span><span class="o">&lt;=</span><span class="n">n_nuc</span><span class="p">:</span>
            <span class="n">file_write</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">&#39;ATOM</span><span class="si">%7s%3s%8s%4s%12.3f%8.3f%8.3f%6.2f%6.2f</span><span class="s1">            </span><span class="se">\n</span><span class