By the time you see this screenshot, the feature will be live! Think of it as a new kind of blog where we celebrate Python notebooks :) ... and widgets! So many novel widgets!

This was a fun rabbit hole indeed! We recently added gcc to molab containers for Cython support, but it turns out that technically ... you could also use Zig! It is available via pypi! That's an interesting unlock! Feel free to read the nerdsnipe here: cemrehancavdar.com/2026/03/05/...

What's the weirdest prompting trick you know? Is it repeating the same prompt twice? No. It's repeating the prompt ... three times. Details and benchmark in this video: youtu.be/j2viZGPSydY

Been making some dashboards for myself ...

Notebook productivity is going only up now that it is easy to make your own library of JS <-> Python widgets to help you do your work. The interaction is *super* helpful.

When people start to notice your hobby project ...

We're getting pretty close to automating stuff like this.

I tried to type "database", got "databae". I also learned that the domain name is already taken.

I'm recording a video for all my fellow bayesians to help explain why a break even point is less relevant than the distribution of the break even point. In the same video, I also explain how to code defensively so that Claude actually picks the correct distribution.

I'm reminded of how many web frameworks there are and that those that survived exist do so because they took a principled "this is how we do this" stance. Just think of Django vs. Flask. My prediction for 2026 is that a similar thing will happen for agentic frameworks.

We upgraded the gallery =)

Unexpected nerd-snipe: the act of buying a bread machine

TIL about @statproofbook.bsky.social Cool project!

What?! He's actually posting interesting data science content?! On the INTERNeT?! In THiS DaY and AGE!? youtu.be/93r6tC4k8Dw

Turns out matplotlib is pretty good tech for making big selections ... really! www.youtube.com/watch?v=c-na...

Ohhh this is gonna be a lot of fun

yep. shiny indeed!

Please don't sleep on this. Widget that help you teach can be generated on the fly now and it's just so incredibly cool! Recorded a recent example below: youtu.be/r-x3Es04p8w

One of my biggest gripes with many notebooks found online is that they are lazy when it comes to DX. You often need an ENV key around, so why not verify it early? I just released a new version of a widget that does just this. Check wigglystuff for new updates!

seriously: I really enjoy using matplotlib now. youtu.be/5ZxczGlrkyQ

I'm releasing two new widgets this week. This first one is meant for folks who do developer relations and are keen to host demo notebooks. There's been an eternal gripe of mine for years now and this widget is totally able to fix it. youtu.be/kQlCU4nAjVE

If you want to spend less time on social media but still want to see updates ... just saying: subreddits can be turned into RSS feeds.

I miss the days where you'd see blogposts with clever analyses on datasets, maths and data science tricks. That's why, as an experiment, we're starting a new moderated subreddit. People can share/promote their notebooks and you can use RSS to subscribe. Please join and share!

Flexing some Matplotlib today ...

👀

To all Python people who feel bored with the content online, and are craving deeper dives, we're here to help. Starting today I'm going to help moderate a little part of the internet where you are free, nay encouraged!, to share interesting notebooks. Please join and share!

What might a 3D slider be like for a tensor?

Now that LLMs have gotten better, maybe we have permissions to work on tools that remind us of Bret Victor's work. Here's my first attempt. youtu.be/q8UBH54B2Rg

Total vanity metric, but I'm still very happy with it. Thanks to everyone who enjoys my antics over on the marimo side of YT!

Been looking for patterns to make Claude teach me something and ... I may be on to something here. youtu.be/TPnHTbPq6mc

I'm not an LLM maximalist but you can't ignore the coolness of this stuff. www.youtube.com/watch?v=azI...

This was a fun exercise for all you sklearn nerds out there. koaning.io/posts/speci...

My new favorite notebook widget ... youtu.be/-Nvhuw_1iDM

This is a vibe-coded widget that I made to explore a differential equation. Good times!

Wigglystuff is at 16 widgets now. The best part? They should work from any modern Python notebook, be it marimo, Jupyter, VSCode or colab. koaning.github.io/wigglystuff/

When Kevin Malone meets Claude koaning.io/posts/when-...

My favorite use-case of git-blame these days is to understand if what I am reviewing has been written by Claude. Not every agent/setup does this attribution. Would be even better if it could say "this part was Bob + Claude".

See me live here soon: www.youtube.com/watch?v=ze7...

Working on an update ...

Been a while, but it's time for a new keyboard review. From the folks who made the Glove80, we now have the Go60. It's a flat board, design for an easy carry, and it does a lot of things right! Full review viewable here: youtu.be/RApoSEEeUL4

It's like flossing, but for your hard drive.

Thanks to uv you now have a way to take your Python function, and run it in another Python environment with different dependencies, and return the results back to the original Python environment. It's hacky, but oh my, the use-cases! www.youtube.com/watch?v=_Jf...

I am having a lot of fun dogfooding something new.

Dangit shared a broken link before. Sharing again! youtu.be/VmcykL8mlsk

I spotted an elegant library the other day. I tried it, like it, and then decided that its elegance was potentially a limiting factor in many projects. I've had the feeling before and felt that it was time to make a video about it. youtu.be/YDZavOVAsj0

This was one of those PRs, when you look back it's actually not to much work, but *oh my*, THAT THING IS NOW FINALLY FIXED!

Javascript has a (pretty neat) ability to do optional change. So that this doesn't have to error out (it just returns undefined). object?.child?.not_exists Can we have something like that in Python too? Kinda! youtu.be/UA4r9LKyAc8

I met a bunch of folks at a meetup last week that were talking about what GitHub might be like if it was more for vibe-coding. It surprised me to learn none of them knew about conductor.build, because that's basically what it feels like. So I made a video about it. youtu.be/zh-pvwUjMuY

TIL about taskipy. It effectively lets you use your pyproject.toml file as a taskrunner too and it might even replace a bunch of Makefiles for Python projects. youtu.be/n-L2p-poGUk

Stop using the mouse/trackpad to move windows around. There are great, even free, macOS apps that turn all that jazz into a keyboard shortcut! www.youtube.com/watch?v=zzv...