MyBlueLinux.com

Django models fabulous four tools

Q objects, F objects, annotate, and aggregate — the four tools that let you stop dropping to raw SQL, and the one distinction everyone gets wrong. The Django ORM Can Do Way More Than .filter()

Django Development

Reverse Relationships in Django Guide

Where that mysterious _set comes from, what related_name actually does, and how to query backwards across a ForeignKey. author.book_set: Reverse Relationships in Django, Finally Clear...

Django Development

Django: Custom model managers and querysets

Custom managers and querysets — how to name your query logic once, reuse it everywhere, and chain it like Django’s built-in methods. Stop Repeating .filter(is_active=True) Everywhere.

Django Databases Development

How debug Django queryset with explain() function

In this article, we'll explore the purpose of explain(), how to use it for debugging, and how to interpret its output for both PostgreSQL and SQLite.

Django Databases

Python SocketServer Guide

The socketserver module (formerly capitalized as SocketServer in Python 2) is a framework in the Python standard library designed to simplify the task of writing network servers. It abstracts away much of the boilerplate code required to set up sockets, bind to addresses, listen for incoming connections, and handle requests.

At its core, socketserver decouples the server-level transport mechanism (how connections are accepted and managed) from the application-level logic (how individual requests are processed).

Python Development