How do I access part of a list in Jinja2

I had the same problem too. It’s a simple answer. This retrieves the last five items in site.posts:

{% for recent in site.posts[-5:] %}
    {% for post in recent %}
        <li> <a href="https://stackoverflow.com/{{ post.url }}">{{ post.title }}</a></li>
    {% endfor %}
{% endfor %}