Django Admin Project: How to Add Custom ‘Actions’ (Export to CSV)
You’ve customized your Django Admin, but it has a hidden power: “Actions.” An action is a function you can run on all selected items in…
An Advanced Guide to Python f-strings (Beyond the Basics)
You already use f-strings to put variables in text: f"Hello, {name}!" But f-strings are far more powerful than that. In this article, we’ll look at…
pathlib: The Modern Way to Handle File Paths in Python
For decades, Python developers manipulated file paths using the os module. This Python pathlib guide aims to introduce a more modern and efficient approach to…
Django signals: How to Run Code on Model Events (e.g., post_save)
What if you want to automatically send a welcome email every time a new user signs up? Or create a User Profile the instant a…
The Python “Mutable Default Argument” Trap (Why Your List is Not Empty)
This is the most famous “gotcha” in all of Python: the Mutable Default Argument bug. It’s a bug that confuses every developer exactly once. Look…
Packaging Your Python Project: An Intro to pyproject.toml
You’ve built dozens of projects. To publish your package and make it easy for others to install, you’ll need to understand how to use Python…
How to Fix: NotImplementedError in Python (OOP Guide)
This error looks scary, but it’s actually a helpful message from a developer. In Python, the NotImplementedError is not a bug; it’s a feature of…
Understanding pytest Fixtures: A Guide to Better Testing
In our intro to pytest, we learned how to use simple assert statements. But what if all your tests need the same setup data? You…
A Modern Guide to Testing: Why You Should Use pytest
In our unittest guide, we learned how to write automated tests. This Python pytest guide will help you get started with the preferred testing tool….
Python yield Explained: A Deep Dive into Generators
If you’ve ever worked with huge files or infinite sequences, you’ve needed a generator. The keyword that powers them is yield. In this article, you’ll…
