A Practical Introduction to the Python Abstract Syntax Tree
Looking at how Python represents code internally, and how pytest rewrites assert statements behind the scenes.
Laurent Direr's blog
Posts about programming
Latest posts
Notes on AI coding workflows: two recent Armin Ronacher videos
Notes from a 3-hour vibe coding session and a new talk on agent workflows.
Notes on Mitchell Hashimoto's AI workflow
Notes on a recent interview with the Zed team.
The browser can store gigabytes of data
A building block for local-first applications.
Reading Structure and Interpretation of Computer Programs in 2025
One year of wizardry.
Debugging ORM queries with database logs
Log database queries directly instead of relying on ORM logging options.
Rate-limiting Sentry issues on the client
A client-side rate limiter to prevent noisy errors from consuming your Sentry quota.
A review of CSS for JavaScript developers and Joy of React
In 2024 I took these two courses from Josh Comeau. TLDR: loved it.
A use case for margin in css flexbox
Four attempts at a simple header layout to build frontend intuition.
Practical checks when working with alembic migrations
Keep your team efficient by catching migration issues early.
Debugging FastAPI routes with pdb
Get a breakpoint on exception without guessing where things went wrong.
Some PyCharm tips
PyCharm shortcuts and tips I sometimes share with coworkers.
Automatically disabling noise cancelling on Bose QC35 headphones
Using udev and systemd to disable noise cancelling when the QC35 connects over bluetooth.
Deploy your app with docker and docker-compose - Part 2
So we developed that app locally. It's pretty! Or maybe it's not. Let's deploy it anyway!
Deploy your app with docker and docker-compose - Part 1
This tutorial will walk you through creating a dockerized development environment for a single page application.