Even if you haven’t heard of Raymond Hettinger, you’ve definitely used his work, bangers such as sorted(), collections, and many others. His talks...

   This is part two of a series covering core DynamoDB concepts, from philosophy all the way to single-table design. The goal is to get you to...

   This is part one of a series covering core DynamoDB concepts and patterns, all the way up to single-table design; the goal is to get you to...

   Back in 2023, we made a thing for running async code from sync code. I’m happy to announce that it is now available on PyPI as asyncio-thread-runner.

   Last time, we built a hybrid concurrent.futures executor using inheritance. Today, we’re building it again (twice ) using composition and functions...

   in which we build a hybrid concurrent.futures executor that runs I O bound tasks on all available CPUs, thus evading the limitations imposed by the...

   Today we’re implementing a least recently used cache with priorities and expiry, using only the Python standard library. This is a bIG TEch CoDINg...

   Having trouble figuring out when to use classes? In this article, we look at another heuristic for using classes in Python, with examples from real...

   So, you’re doing some sync stuff. But you also need to do some async stuff, without making everything async. Hint: asyncio.Runner will get you at...

   Do you feel you’re fighting your tools? Do you feel you’re relying too much on autocomplete and inline documentation? tl;dr: Most good documentation...

   Java is notoriously verbose, especially when used in a serious Enterprise Projectâ ...so naturally, I made linesieve, a Python text munging tool to...

   So, you’re doing some async stuff, repeatedly, hundreds of thousands of times. How do you not do it all at once? Hint: asyncio.Semaphore is not...

   in which you’ll find out what while constructing a mapping found unhashable key PyYAML errors mean, why do they happen, and what you can do about it.

   in which you’ll learn how to cache a lot of methods in Python, even for objects created by someone else. Did you know that, contrary to popular...

   reader, my Python feed reader library, is 5 years old; since this is a special occasion, I thought I’d share a few thoughts on the journey so far.

   in which we check if your password has been compromised in many inconvenient ways, in a tale of destruction, obsession, and self-discovery.

   in which we look at one or two ways to make life easier when working with Python regular expressions.

   in which you’ll find out what could not determine a constructor for the tag PyYAML errors mean, why do they happen, and what you can do about it.

   in which we use PyYAML to safely read and write YAML with any tags, in a way that’s as straightforward as interacting with built-in types.

   This is the fourth article in a series about writing my own SQL query builder. Today, we’ll rewrite it from scratch, explore API design, learn when...

   namedtuple has been around since forever, and over time, its convenience saw it used far outside its originally intended purpose. With dataclasses...

   This is the third article in a series about writing an SQL query builder in 150 lines of Python. Here, I talk about why I decided to write my own,...

   In this article, we look at a few real-world examples where functions taking the same arguments don’t necessarily make a class, as counter-examples...

   PEP 661 proposes adding a utility for defining sentinel values in the Python standard library. In this article, you’ll get a PEP 661 summary, learn...

   In this article, we look at a heuristic for using classes in Python, with examples from real-world code, and some things to keep in mind.

   This is the second article in a series about writing an SQL query builder in 150 lines of Python, why I wrote it, how I thought about it, and the...

   In this series, we examine an SQL query builder I wrote in 150 lines of Python, why I wrote it, how I thought about it, and the decisions I had to...

   in which we look at an interesting alternative to Makefiles with .PHONY-only targets, and why I think it’s cool.

   In this article, you’ll find out what Python hashlib object supporting the buffer API required TypeErrors mean, why do they happen, and what you can...

   On your Python learning journey, you may have heard that a great way to get better is to read code written by other people. That’s true, but finding...

   in which we talk about the many ways of using Python dataclasses without type annotations (or even variable annotations ), and what this says about...

   In this article, you’ll learn how to calculate deterministic hashes for arbitrary Python data objects, stable across interpreter versions and...

   Are you having trouble making the modules work together in a larger project? Have you tried looking at popular projects as models, but were put off...

   in which we optimize our Advent of Code 2020 day 17 (Conway Cubes) solution, focusing on profiling and optimizing existing code, in a way that helps...

   in which we solve the day 17 problem from Advent of Code 2020, Conway Cubes, in a generic way, focusing on testing, refactoring, and idiomatic Python...