templates/categories.html

{% extends "base.html" %}
{% block title %}{{ SITENAME }} - Categories{% endblock %}
{% block content %}
{% set custom_header = "Categories" %}
{% include "header.html" %}
<dl>
  <ul>
  {% for category, articles in categories %}
    <li><a href="{{ SITEURL }}/{{ category.url }}">{{ category }}</a></li>
  {% endfor %}
  </ul>
</dl>
{% endblock %}