class="p">,</span> <span class="p">(</span><span class="n">idx</span><span class="p">,</span> <span class="n">r</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">mapping</span><span class="o">.</span><span class="n">iterrows</span><span class="p">(),</span> <span class="n">start</span><span class="o">=</span><span class="mi">1</span><span class="p">):</span>
        <span class="n">sel</span> <span class="o">=</span> <span clas