Please see the following the code:
{% for row in df_src.iterrows %}
   <tr >
    <td><input type="checkbox"></td>                              
    {% for col in columns %}
      <td  class="redrow">{{row.1.col}}</td>                                  
    {% endfor %}                                                               
   </tr>
{% endfor %}
Here in {{row.1.col}} where col can be any value like NAME, PHONE, etc. When I access it like {{row.1.PHONE}} I get the value in html, however when I access it like {{row.1.col}} nothing is shown in html.
 
    