Jinja2. What is the difference between extends and include?

Question

Jinja

one inherits, the other includes.
I didn't see any difference in practice.

Answer 1

Of course, there is a difference, and a significant one. Extends extends an existing template, and include adds a piece of the template in the right place.
Let's imagine a situation with a sufficiently large template, where only part of the page needs to be changed. The base template looks something like this

<!-- parent -->
{%block заголовок%}
{%block левый_блок%}
{%block правый_блок%}
{%block тело%}
{%block подвал%}

If you inherit from this template, it will look something like this

<!-- chlid -->
{% extends parent %}
{%block левый_блок %}
{%block тело %}

Otherwise, we would have to connect all other blocks with inclusions.