loop

for loop

<ul>
    {% for comment in comments %}
    <li>
        <p>{{comment.content}}</p>
    </li>
    {% endfor %}
</ul>

loop variable

{{ forloop.Counter }} 
{{ forloop.Counter0 }}
{{ forloop.First }}
{{ forlooop.Last }}
{{ forloop.Revcounter }}
{{ forloop.Revcounter0 }}

<!-- if nested -->
{{forloop.Parentloop.Counter0}}

reverse / sort list directly in loop

{% for item in items reversed %}{{ item }} {% endfor %}
{% for key in name2score sorted %}{{ key }} {% endfor %}
{% for key in name2score reversed sorted %} {{ key }} {% endfor %}