Use Django for a Python web app

Cost

Open source. BSD-3-Clause licence, free to run on your own servers.

How to do it

Django 1.0 came out in September 2008, and version 6.1.2 shipped in October 2026. Django 5.2 is the long-term support release, with security fixes until April 2028. It has about 11 million weekly downloads on PyPI and a BSD-3-Clause licence. It brings accounts, an admin, database migrations and form checks in one package, so an agent has fewer parts to wire. Choose something else when the app is only a JSON API, which FastAPI suits better. Flask is smaller, but its last release was in February 2026, so it fails the six-month test today. Its migrations follow Change the schema only with migrations.

Examples

Using these examples: they show one way to follow this rule. Keep the behaviour and the check, not the syntax. Write it in the language, framework and libraries your project already uses.

Python example

# orders/views.py
from django.shortcuts import get_object_or_404, render
from .models import Order

def order_detail(request, order_id: int):
    order = get_object_or_404(Order, pk=order_id, owner=request.user)
    return render(request, "orders/detail.html", {"order": order})

JavaScript example

const DJANGO_SUPPORT_ENDS = { '5.2': '2028-04-01', '6.0': '2027-04-01', '6.1': '2027-12-01' };
const MIN_DAYS_LEFT = 183;

export const isDjangoSupported = series =>
  (Date.parse(DJANGO_SUPPORT_ENDS[series]) - Date.now()) / 86_400_000 >= MIN_DAYS_LEFT;

How to check

The installed Django release series appears in the supported versions table on the Django download page, with an end date at least six months away.

Sources

• Django download and supported versions

Related rules

• Change the schema only with migrations in Data