title: Nested For Loop in Jinja2
body: <p>I am making a nested for loop in Jinja / Python Flask.</p>
  
  <p>If I hard code the values, then it works fine.  Am I missing something in the Jinja template?</p>
  
  <pre><code>&lt;table class="table table-striped"&gt;
  &lt;tr&gt;
      {% for column in Columns %}
          &lt;td&gt;{{ column }}&lt;/td&gt;
      {% endfor %}
  &lt;/tr&gt;
  
         {% for row in rows %}
             &lt;tr&gt;
                  {% for column in Columns %}
                      &lt;td&gt;{{ row.column }}&lt;/td&gt;
                  {% endfor %}
             &lt;/tr&gt;
         {% endfor %}
  
  &lt;/table&gt;
  </code></pre>
  
  <p>By the way, the output is nothing when it is not hardcoded.</p>