I've completed "Movie Theater" - Day 9 - Advent of Code 2025

My shortest solution so far thanks to the shapely Python library in Part 2.

github.com/jstanden/advent-of-…

#AdventOfCode #Python #Programming

advent-of-code-python/2025/day9.ipynb at main · jstanden/advent-of-code-python

Advent of Code solutions in Python. Contribute to jstanden/advent-of-code-python development by creating an account on GitHub.

^GitHub

#AdventOfCode 2025, day 9

Here we go, the complexity is really picking up. Today we got another grid geometry puzzle.

I spent my morning solving the wrong problem because I didn't read the description properly.

And then in the evening I managed to solve the puzzle but had hard time explaining how it works.

So I spent a good few extra hours refactoring it into something that helped me understand and hopefully will help someone else too.

notes.hamatti.org/technology/a…

#python

Advent of Code 2025: Day 9 : Juha-Matti Santala

Spoiler alert This is a full solution for Advent of Code 2025, day 9 puzzles with explanations. If you want to try to solve it yourself first, head over to adventofcode.com/2025/day/9 and give it a go and then come back and compare notes.

^{notes.hamatti.org}

#datocurioso

¿Sabían que el lenguaje de programación Python fue bautizado en honor al programa de comedia británico Monty Python's Flying Circus y no por la serpiente?

Su creador, Guido van Rossum, era un gran admirador de la serie de la BBC a finales de la década de 1980, y eligió el nombre como un tributo a ese humor absurdo.

La filosofía detrás de Python está recogida en un documento conocido como "El Zen de Python". Principios como "Bello es mejor que feo" y "La legibilidad cuenta" no son solo guías de estilo para codificar, sino casi máximas que buscan la claridad y la sencillez.

Es fascinante cómo la búsqueda de una comunicación clara y humana se traduce en eficiencia al comunicarnos con las máquinas.

#Python #Programacion #Historia #Tecnologia #Software #LenguajesDeProgramacion

RE: mastodon.social/@EmmaDelescoll…

AI assistants Day 3 is here 🤖

TIL: Even when benchmarks prove Claude's code is 80x slower, it marks it as "a fluke". AIs are stubbornly optimistic about their own code.

But they're still useful for rubber-ducking!

Full write-up: emma.has-a.blog/articles/adven…

Claude's review: codeberg.org/emmaDelescolle/ad…

#AdventOfCode #AI #Python

✨ Emma 🐍 🎸 🐹‏

2025-12-01 19:28:09

mastodon

Starting a 12-day experiment: AI coding assistants vs. human on Advent of Code 2025.

Claude, GPT-OSS, and Kimi-K2 competing with full session logs and reviews. First in a series about pair-programming with robots.

emma.has-a.blog/articles/adven…

#AdventOfCode #AI #Python

The Advent of Code.... Assistants

The first in a series documenting pair-programming with AI agents. Using Advent of Code 2025 as a testbed, I'm comparing solutions from multiple AI tools (Claude Sonnet 4.5, GPT-OSS:20B, Kimi-K2 Turbo) against human-written code.

^{Emma has a blog}

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There are two kinds of people today: people that know Kruskal's algorithm and people who don't.

If you do, it's pretty simple. Calculate all the distances (you don't even need sqrt since you just need to compare them), sort the pairs by distance, and add them one-by-one to the working set. I used union find to keep track of the connected components as I added edges. Once you've added 1000 edges, get the three biggest connected components and multiply their sizes together for Part 1. Keep adding until the number of non-connected components reaches 1, and then multiply the X coordinates of the last edge you added for Part 2.

If you don't, you probably eventually did something similar but it was a lot more painful. 🙃

Not my fastest solution, but still just over 500ms on my laptop, and the complexity of reducing it wasn't worth it.

#adventofcode #adventofcode2025 #python #minimumspanningtree #kruskalsalgorithm

#AdventOfCode 2025, day 8

Whew, what a day. Who knew helping Elves connect junction boxes in a playground can be so exhausting.

Took me quite a while to figure out first part but then second was pretty trivial for me. A weird difficulty curve there — maybe the way I modeled my world just ended up being well matched for the puzzle.

notes.hamatti.org/technology/a…

#python

Advent of Code 2025: Day 8 : Juha-Matti Santala

Spoiler alert This is a full solution for Advent of Code 2025, day 8 puzzles with explanations. If you want to try to solve it yourself first, head over to adventofcode.com/2025/day/8 and give it a go and then come back and compare notes.

^{notes.hamatti.org}

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Day 08 - "Playground" ✅

I had difficulty figuring out part 2.
Overall, today's challenge was interesting.

My solutions - github.com/GKay-Dev/Advent-of-…
Advent of Code 2025 - adventofcode.com/2025/day/8

#AdventOfCode #Python #Coding #Challenges #100Devs #AoC2025

GitHub - GKay-Dev/Advent-of-Code-2025: Welcome to my Advent of Code 2025 journey! This repository contains my solutions to the daily coding challenges from Advent of Code.

Welcome to my Advent of Code 2025 journey! This repository contains my solutions to the daily coding challenges from Advent of Code. - GKay-Dev/Advent-of-Code-2025

^GitHub

Some highlights from #PyLadiesCon!

Keynote - Imogen Wright - How Complex Systems Taught Me To Fail
youtube.com/live/MObVZKZr5vY

Sofia Toro - How to teach your language to Python (with CPython!)
youtube.com/watch?v=JhFKjiEWHW…

Meagen Voss - Building more accessible Python-powered websites
youtube.com/watch?v=KrtUTEZzD6…

Panel - From Contributor to Founder: Turning Python Projects into Products
Carol Willing, Inessa Pawson, Deborah Hanus, Leah Wasser
youtube.com/live/NB2Q9dbLwVc

#Python #conference #PyLadies #PyCon

Keynote - How Complex Systems Taught Me To Fail

Language: EnglishSpeaker: Imogen WrightWe live in a golden age of programming paradigms and frameworks, all promising correctness, reproducibility, and even ...

^YouTube

#AdventOfCode 2025, day 7

I loved the 0H-N0 error code, I really want to use it in a real project one day.

My math brain has been sleeping all morning but I still managed to come up with a solution.

Explaining the solutions isn't just something that's beneficial to a reader. I love explaining things because it forces me to dig deeper to see if I really understood what I did and where the gaps in my knowledge are.

It's a good habit to get into.

notes.hamatti.org/technology/a…

#python

Advent of Code 2025: Day 7 : Juha-Matti Santala

Spoiler alert This is a full solution for Advent of Code 2025, day 7 puzzles with explanations. If you want to try to solve it yourself first, head over to adventofcode.com/2025/day/7 and give it a go and then come back and compare notes.

^{notes.hamatti.org}

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Today's #AdventOfCode problem was definitely an Advent of Input Parsing challenge. 😂

Part 1 was pretty simple, just split on spaces and collect each column into a dict keyed on the index of the number of the split array, then get either the sum or the product.

Part 2 was not all that different, except we don't split on whitespace, we collect on each column, and since the all whitespace columns have zero numbers, use the lack of numbers in a column as a sentinel to process the collected numbers we have.

It's all a little hard to explain, but it works. 🙃

github.com/biesnecker/aoc-anyh…

#adventofcode2025 #python

aoc-anyhow/202506.py at main · biesnecker/aoc-anyhow

Getting Advent of Code down however I can, mostly Python - biesnecker/aoc-anyhow

^GitHub

#PyLadiesCon starts later today, it's a ~30-hour online conference open to everyone, and last year's was excellent.

Tickets are free, but you can also pay a custom amount, and/or make a donation. It's a great way to support the community (maybe you have some training budget to use up before end of year?)

Schedule: 2025.conference.pyladies.com/e…

Tickets: pretix.eu/pyladiescon/2025/

Mastodon: @pyladiescon

#Python

PyLadiesCon 2025 - The global online PyLadies Conference

^{2025.conference.pyladies.com}

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I had a late start this morning and didn't have a chance to do #AdventOfCode Day 4 until just now.

I leaned on a couple of utility functions (xy_to_coord, which converts x and y to a complex number for ease of use as a key; and get_neighbors_all, returns a generate that gives the direction and coordinate of the eight squares surrounding its argument) that I'd made in previous years.

First I parsed the input into a set of roll positions, then transformed it into a dictionary of roll locations => neighbor counts.

For Part 1, I just checked the locations that had fewer than 4 neighbors. For Part 2, I put that set of locations into a queue, reduced the counts of each one's neighbors, adding any that fell below 4 neighbors into the queue, and ran until the queue was exhausted.

Both were pretty straightforward to implement. I definitely have the feeling that this was a warm up grid problem, though! 😂

github.com/biesnecker/aoc-anyh…

#adventofcode2025 #python

aoc-anyhow/202504.py at main · biesnecker/aoc-anyhow

Getting Advent of Code down however I can, mostly Python - biesnecker/aoc-anyhow

^GitHub

Call if a relic of my school days but I still work better on solving a puzzle with pen and paper.

I just can't look at a problem and get to coding, there has to be my own diagnosis of it on paper, manually working through test cases, edge inputs and at least two iterations through an entire loop of the main logic. Only after that do I replicate the logic using code. Am I alone?

#programming #python #adventofcode #javascript #kotlin #java #c #golang #php #ruby #swift #perl

I just completed "Printing Department" - Day 4 - Advent of Code 2025

I love using complex numbers for 2d grid coords. Python excels at this kind of puzzle. ~10 lines and 200ms for both parts.

github.com/jstanden/advent-of-…

#AdventOfCode #Python #Programming

advent-of-code-python/2025/day4.ipynb at main · jstanden/advent-of-code-python

Advent of Code solutions in Python. Contribute to jstanden/advent-of-code-python development by creating an account on GitHub.

^GitHub

#AdventOfCode 2025, day 4

Forklifts and paper rolls were the theme of the day.

I reused some helper functions in creating a grid from the input and got to a nice solution with the first idea. If I had more time, I'd love to look into some optimisations but work calls.

First use of my favourite data structure, namedtuples, and I also got to discuss magic numbers.

notes.hamatti.org/technology/a…

#python

Advent of Code 2025: Day 4 : Juha-Matti Santala

Spoiler alert This is a full solution for Advent of Code 2025, day 4 puzzles with explanations. If you want to try to solve it yourself first, head over to adventofcode.com/2025/day/4 and give it a go and then come back and compare notes.

^{notes.hamatti.org}

#AdventOfCode, day 3

Solving a puzzle to start the day before heading back into writing production code is a good way to get the brain activated.

notes.hamatti.org/technology/a…

#python

Advent of Code 2025: Day 3 : Juha-Matti Santala

Spoiler alert This is a full solution for Advent of Code 2025, day 3 puzzles with explanations. If you want to try to solve it yourself first, head over to adventofcode.com/2025/day/3 and give it a go and then come back and compare notes.

^{notes.hamatti.org}

#AdventOfCode, day 2

Today's Advent of Code puzzle was a master class for why writing notes is powerful professional habit.

I read the puzzle, thought to myself "hmm, I've something similar before" and looked for my notes. Lo and behold, there was a 2015 puzzle I had written about where I found a good starting point to adapt from to this puzzle.

notes.hamatti.org/technology/a…

#Python #NoteTaking

Advent of Code 2025: Day 2 : Juha-Matti Santala

Spoiler alert This is a full solution for Advent of Code 2025, day 2 puzzles with explanations. If you want to try to solve it yourself first, head over to adventofcode.com/2025/day/2 and give it a go and then come back and compare notes.

^{notes.hamatti.org}

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Brute forcing today was pretty easy:

* Iterate through the ranges;
* Check if the first half of the number was equal to the second half (part one); or,
* Iterate through chunk lengths (up to and including half the number) and check if the number was composed of a repetition of that chunk (part two).

but the ranges were big enough that checking all of them took ... well honestly still not very long on my Macbook. Maybe a quarter second.

But still slower than I wanted, so I thought for a while and came up with another approach. It's obvious that the # of candidates grows much more slowly than the amount of numbers in the range, so it's much faster to generate all possible candidates then test if they're in a range (using Python's built-in bisect to quickly search for a possible range) than the other way around. This runs almost instantly on my computer.

github.com/biesnecker/aoc-anyh…

#adventofcode #adventofcode2025 #python

aoc-anyhow/202502.py at main · biesnecker/aoc-anyhow

Getting Advent of Code down however I can, mostly Python - biesnecker/aoc-anyhow

^GitHub

Starting a 12-day experiment: AI coding assistants vs. human on Advent of Code 2025.

Claude, GPT-OSS, and Kimi-K2 competing with full session logs and reviews. First in a series about pair-programming with robots.

emma.has-a.blog/articles/adven…

#AdventOfCode #AI #Python

I just completed "Secret Entrance" - Day 1 - Advent of Code 2025

github.com/jstanden/advent-of-…

#AdventOfCode #Python #Programming

advent-of-code-python/2025/day1.ipynb at main · jstanden/advent-of-code-python

Advent of Code solutions in Python. Contribute to jstanden/advent-of-code-python development by creating an account on GitHub.

^GitHub

"To save Christmas, the Elves need you to finish decorating the North Pole by December 12th."

Advent of Code is here 🎄!

Once again, I'm using this opportunity to solve the puzzles and write educational explanations to help people learn Python through puzzle solving.

I publish them in my digital garden, one note per day: notes.hamatti.org/technology/a…

My goal is to inspire someone to pick up programming and to show it's not that intimidating.

Come along!

#Python #AdventOfCode #AdventOfCode2025

Day 1 : Juha-Matti Santala

Spoiler alert This is a full solution for Advent of Code 2025, day 1 puzzles with explanations. If you want to try to solve it yourself first, head over to adventofcode.com/2025/day/1 and give it a go and then come back and compare notes.

^{notes.hamatti.org}

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As you might expect, #adventofcode2025 day one was pretty straightforward, modulo (hehe) a little tricky bit with calculating rotations when you're already at zero that slowed me down on part two for longer than I'd have liked.

I wrote the `rotate` function after seeing that part two was basically the same as part one, except we also need to keep track of the number of total rotations (that is, passes across zero).

Looking forward to the next problems (even if there are only 11 rather than 24 remaining this year 😢).

Code: github.com/biesnecker/aoc-anyh…

#adventofcode #python

aoc-anyhow/202501.py at main · biesnecker/aoc-anyhow

Getting Advent of Code down however I can, mostly Python - biesnecker/aoc-anyhow

^GitHub

I wrote a piece arguing that PHP kind of punishes you for writing good code — yes, a spicy take, but someone had to say it.

If you’ve ever tried to be “responsible” in PHP and ended up feeling like the language was quietly judging you, you’ll get where I’m coming from. Rust and Python show up mainly as contrast… and maybe as a gentle tease.

I expect some opinionated responses are in order:)

dev.to/justlig/php-punishes-yo…

#PHP #Programming #Dev #Python #Rust

We leave it up to the person or team that maintains each repo to upgrade #Python versions for that repo, but there are a lot of interactions between different repos and also reliance on some common infrastructure, such that when one gets upgraded, a lot of others follow quickly. Not an ideal situation, I would say, but it's getting better as we converge toward standard best practices.

It doesn't help that we use Bazel, which doesn't really play well with Python in my experience. Upgrades are a pain when you have to manually define your own toolchains.

Me me me!

I already kind of decided to skip this year but then with the new announcement of there being less puzzles which inspired me to do it once again.

I'm continuing my Python + educational materials approach this year.

#AdventOfCode #Python

Who will be playing this year's Advent of Code?

If so, what will be your fighter?

Last year, I thought, I would have learned enough #Python by now, but I didn't.

So, it will be #Perl again.

adventofcode.com/2025

#AdventOfCode #AOC2025

• Python (35%, 32 votes)
• Rust (20%, 19 votes)
• C/C++ (13%, 12 votes)
• Something else (38%, 35 votes)

What online #Python communities would you most recommend?

For someone new to Python?

For someone using Python but not yet tapped into a community? (outside of their work place / friends)

Which is the one true way to indent code?

#askfedi #programming #softwareengineering #java #python #csharp #javascript #kotlin #ide #linux #windows #macos

• Tabs (56%, 103 votes)
• Spaces (44%, 81 votes)

You wouldn't believe what happens when #PyLadiesCon replaced our spreadsheets with actual database system and conference infrastructure.

Now we're able to show live* registration counts and fundraising progress without copy pasting data. It's all automated with webhooks, APIs, and #Python.

*with 5 minutes cache delay

What do you think? Wanna support our community? Register, sponsor, donate, and tell everybody you know.

View our dashboard at portal.pyladies.com/stats/

#NoMoreSpreadsheets

Another update of the Pyriodic Backend project:

• methods to update certain HTML tags can be run at different intervals
• added a JSON file backend
• a sprinkle of refactoring

Feedback and contributions are most welcome

codeberg.org/stfn/pyriodic-bac…

#python #opensource #codeberg #webdevelopment

pyriodic-backend

^Codeberg.org

📣 Keynote Alert!

We’re thrilled to welcome Abigail Afi Gbadago as a #PyLadiesCon Keynote Speaker! 💜

🎤 “Beyond Code: Building Careers, Growing Inclusive Communities” — a talk about how empathy, inclusion & belonging make tech truly powerful.

#PyLadies #Python #Community

📢 We are excited to announce #PyLadiesCon Program! 🙌

🙏 Thanks to everyone who sent their proposal, and to the amazing volunteers on the Program team reviewing the submissions.

Check it out now: 👇
🌐 2025.conference.pyladies.com/e…

#PyLadies #Python #PyLadiesCon

📣 Keynote Announcement!

We’re thrilled to welcome Alyssa Coghlan, longtime CPython core contributor & Python community leader, as a #PyLadiesCon Keynote Speaker! 💜

✨ A talk for everyone, from first-time contributors to maintainers.

💬 Tag a PyLady or mentor who keeps open source alive!

#PyLadies #Python #OpenSource #Community

🎉 Registration for #PyLadiesCon 2025 is now
open! 💜
Join us online from December 5–7, 2025, for a free, global celebration of Python, learning, and community.

The program is live, and we can’t wait for you to explore it!

👉 Read all the details and register here:
🔗 conference.pyladies.com/2025-r…

#Python #PyLadies

Ich bin richtig stolz auf die US #Python #Community!

Mittel von 1.5 Mio$ aus dem National Science Foundation wurden von der Python Software Foundation‘s (#PSF) abgelehnt, weil sie unethische Forderungen der aktuellen US-Regierung bedeutet hätten.

Als Ergebnis der Ablehnung sind die privaten #Spenden stark angestiegen.

thenewstack.io/psf-gets-a-dono…

PSF Gets a Donor Surge After Rejecting Anti-DEI Federal Grant - The New Stack

The Python Software Foundation's courageous refusal of an anti-DEI $1.5 million federal grant immediately triggered an extraordinary outpouring of community support.

^{David Cassel (The New Stack)}

I made some minor updates to my open source Python project, Pyriodic Backend, it is very much work in progress and pre-alpha, but it can already be used for simple projects.

The main aim of Pyriodic Backend is to be "the simplest possible backend for static HTML websites". It allows to periodically (duh) update certain parts of the webpage based on functions written in Python. I am using it my solar webserver project to present the weather and cpu statistics on my static website.

codeberg.org/stfn/pyriodic-bac…

#python

pyriodic-backend

^Codeberg.org

Wer möchte mit uns beim #39c3 etwas zu #Kindern, #Jugend, informationeller Selbstbestimmung, Hacking & Co. machen? Workshops von/mit/für Kinder, Diskussionsrunden, Spieleabende, egal.

Schreibt uns im Fediverse!

Die Teckids-Gemeinschaft wird mit einer großen Gruppe da sein. Mit @digitalcourage bauen wir das Teckids-Jugendzimmer als Assembly auf, unsere Jugendlichen bieten Workshops zu #Luanti und #Python im Kidspace an, und wir veranstalten den Fairydust-Türöffner-Tag.

Check the PyLadiesCon conference stats 📈

portal.pyladies.com/stats/

What other interesting stats you'd like to know about the conference?
By using less spreadsheets and instead having actual database, and also writing more Python/Django code, we could now come up with all sorts of data, stats, and visualization (we even have a JSON endpoint!)

Read the codebase to verify how the numbers are calculated and open a PR if things look wrong.

#NoMoreSpreadsheets #PyLadiesCon #Python #Django

How do you display ₹ (Indian Rupee Symbol) on your Mac ?

s_raaz.blogspot.com/2025/11/ma…

#Mac #MacOS #India #Python

Mac : The Rupee Symbol

 It's amazing how one gets to learn through some accidental usage. I was writing a blog post on my " Share2Learn " blog and wanted to quote ...

^{s_raaz.blogspot.com}

I'm officially launching my job search journey outside of #academia and into the unknown waters of #industry .

I have a PhD in Mathematics, specifically logic and set-theory. I have basic understanding of programming, and beginning to learn #Python.
I'm mostly interested in #privacy, #cybersecurity, #sustainability and #opensource , but I keep an open mind.

Located in #Finland, can work #remote.
Suggestions, boosts and LinkedIn connections are welcome!
www.linkedin.com/in/ur-yaar

#FediHire