Understanding Django's template language features

Let's start with a quick primer of Django Template Language (DTL) features.

Variables

Each template gets a set of context variables. Like Python's string format() method's single curly brace {variable} syntax, Django uses the double curly brace {{ variable }} syntax. Let's see how they compare:

In pure Python, the syntax is <h1>{title}</h1>. For example:

>>> "<h1>{title}</h1>".format(title="SuperBook")'<h1>SuperBook</h1>'

The syntax equivalent in a Django template is <h1>{{ title }}</h1>. Rendering with the same context will produce the same output as follows:

>>> from django.template import Template, Context>>> Template("<h1>{{ title }}</h1>").render(Context({"title": "SuperBook"}))'<h1>SuperBook</h1>'

Attributes

Dot is a multipurpose operator in Django templates. There are three different kinds of operations: attribute lookup, dictionary lookup, or...