Type-Safe Python Tests in the Age of AI

Comments (1)

sesigl89 · 3h ago

(author)

Hi HN, I wrote this after seeing the latest data on AI-assisted coding. While the productivity gains are real, so is the technical debt from things like code duplication (up 8x according to a 2025 GitClear study).

I wanted to create a practical playbook for Python developers and teams on how to build a "safety net" using a modern testing stack (Pytest, Ruff, Mypy) and a few key principles like type-safe fakes and behavior-driven tests.

The goal is to embrace the speed of AI without sacrificing the long-term quality of the codebase. Happy to answer any questions.

Simulating and Visualising the Central Limit Theorem (blog.foletta.net)

UK government states that 'safety' act is about influence over public discourse (bsky.app)

Blurry rendering of games on Mac (colincornaby.me)

Gemma 3 270M: Compact model for hyper-efficient AI (developers.googleblog.com)

We rewrote the Ghostty GTK application (mitchellh.com)

Swiss vs. UK approach to major tranport projects (freewheeling.info)

Why LLMs can't really build software (zed.dev)

Lessons learned from buying an open source repo (coplay.dev)

"Death and What Comes Next" by Terry Pratchett (lspace.org)

I used to know how to write in Japanese (aethermug.com)

Blood oxygen monitoring returning to Apple Watch in the US (apple.com)

Making reliable distributed systems in the presence of software errors (2003) [pdf] (erlang.org)

I made a real-time C/C++/Rust build visualizer (danielchasehooper.com)

Show HN: OWhisper – Ollama for realtime speech-to-text (docs.hyprnote.com)

Citybound: City building game, microscopic models to vividly simulate organism (aeplay.org)

The new science of “emergent misalignment” (quantamagazine.org)

Galileo's Telescopes: Seeing Is Believing (historytoday.com)

Steve Wozniak: Life to me was never about accomplishment, but about happiness (yro.slashdot.org)

Show HN: I built a free alternative to Adobe Acrobat PDF viewer (github.com)

Streaming services are driving viewers back to piracy (theguardian.com)

Org-social is a decentralized social network that runs on Org Mode (github.com)

DINOv3 (github.com)

Launch HN: Cyberdesk (YC S25) – Automate Windows legacy desktop apps

Snapshots of Kids Bike Jumping in the 1970s (flashbak.com)

Architecting large software projects [video] (youtube.com)

Is chain-of-thought AI reasoning a mirage? (seangoedecke.com)

Time to End Roundtripping by Big Pharma (cfr.org)

Airbrush art of the 80s was Chrome-tastic (2015) (coolandcollected.com)

Nyxt: The Emacs-like web browser (lwn.net)

OneSignal (YC S11) Is Hiring Engineers (onesignal.com)

The Kuzma Self-Playing Guitar System (core77.com)

Show HN: Evaluating LLMs on creative writing via reader usage, not benchmarks (narrator.sh)

The secret code behind the CIA's Kryptos puzzle is up for sale (news.artnet.com)

500 days of math (gmays.com)

Progress towards universal Copy/Paste shortcuts on Linux (mark.stosberg.com)

Homekit-steam-user-switcher: A way to remotely switch Steam users using HomeKit (github.com)

The U.S. grid is so weak, the AI race may be over (fortune.com)

Stylish Bugs (flak.tedunangst.com)

All Souls exam questions and the limits of machine reasoning (resobscura.substack.com)

Map of Wales and Pronunciation from Wikipedia (mapiau.cymru)

What's the strongest AI model you can train on a laptop in five minutes? (seangoedecke.com)

Zenobia Pay – A mission to build an alternative to high-fee card networks (zenobiapay.com)

Lambdas, Nested Functions, and Blocks (2021) (thephd.dev)

Reverse Proxy Deep Dive: Why Load Balancing at Scale Is Hard (startwithawhy.com)

Show HN: Understanding the Spatial Web Browser Engine (m-creativelab.github.io)

iPhone DevOps (2023) (clearsky.dev)

Arch shares its wiki strategy with Debian (lwn.net)

New protein therapy shows promise as antidote for carbon monoxide poisoning (medschool.umaryland.edu)

What does Palantir actually do? (wired.com)

UK government inexplicably tells citizens to delete old emails and pictures (tomshardware.com)

Type-Safe Python Tests in the Age of AI

Comments (1)