Archive • sethmlarson.dev • Buttondown

Cooler Analytics

February 13, 2026

You don't need analytics on your blog, but maybe you need analytics for your cooler? Trina and I hosted a Superbowl watch-party and I take pride in stocking...

Automated public shaming of open source maintainers

February 12, 2026

This is a follow-up to “New era of slop security reports for open source”. Because it’s so short, I’ve included the entire post in this newsletter email. If...

Dumping Nintendo e-Reader Card “ROMs”

February 4, 2026

Today I’m documenting how to archive the data on a physical Nintendo e-Reader card so you can play or use the encoded program data later even if you lose the...

Use “\A...\z”, not “^...$” with Python regular expressions

January 27, 2026

Two years ago I discovered a potential foot-gun with the Python standard library “re” module. I blogged about this behavior, and turns out that I wasn't only...

mGBA → Dolphin not working? You need a GBA BIOS

January 21, 2026

The GBA emulator “mGBA” supports emulating the Game Boy Advance Link Cable (not to be confused with the Game Boy Advance /Game/ Link Cable) and connecting to...

“urllib3 in 2025” is available on Illia Volochii’s new blog

January 20, 2026

2025 was a big year for urllib3 and I want you to read about it! In case you missed it, this year I passed the baton of “lead maintainer” to Illia Volochii...

25 years of “Food JPEGs” in Super Smash Bros. and Kirby Air Riders

January 6, 2026

Have you ever noticed that the food graphics in Super Smash Bros. and Kirby Air Riders is flat “billboarded” stock images of food? This artistic decision...

New ROM dumping tool for SNES & Super Famicom from Epilogue

January 2, 2026

Just heard the news that Epilogue has released pre-orders for the next ROM backup tool in their “Operator” series for the Super NES (SNES) and Super Famicom...

Cutting spritesheets like cookies with Python & Pillow 🍪

January 1, 2026

Happy new year! 🎉 For an upcoming project on the blog requiring many video-game sprites I've created a small tool (“sugarcookie”) using the always-lovely...

GameCube & Switch “Wrapped” 2025

December 29, 2025

This is my last blog post of 2025 💜 Thanks for reading, I’ll see you in 2026! My collection of “Pikmin 2” variants, from left-to-right: GameCube NTSC-J,...

Blind Carbon Copy (BCC) for SMS

December 26, 2025

Have you ever wanted the power of email Blind Carbon Copy (BCC), but for SMS? I've wanted this functionality myself for parties and organizing, specifically...

PEP 770 was accepted in April, what's happened since?

December 23, 2025

PEP 770 (“Improving measurability of Python packages with Software Bill-of-Materials”) was accepted in April of this year, what has happened since then? I...

Delta emulator adds support for SEGA Genesis

December 18, 2025

The Delta emulator which I've used for mobile retro-gaming in the past has added beta support for SEGA Genesis and Master System games! Riley and Shane made...

Extracting Nintendo Switch “Play Activity” with OCR and Python

December 10, 2025

Despite considering myself a “gamer”, I realized I had only played ~5 hours of video-games in the whole year 2022 and ~6 hours in 2021. Honestly, these...

Deprecations via warnings don’t work for Python libraries

December 8, 2025

Last week urllib3 v2.6.0 was released which contained removals for several APIs that we've known were problematic since 2019 and have been deprecated since...

Mobile browsers see telephone numbers everywhere

November 25, 2025

Just like Excel seeing everything as a date, mobile browsers automatically interpret many numbers as telephone numbers. When detected, mobile browsers...