Posts tagged: python

💭 Release 0.9.17 · astral-sh/uv · GitHub

2026-03-31T21:02:17Z

uv adds dependency cooldowns via #16814. Well needed feature in todays world, far from a guarantee, but its something.

Note

This post is a thought. It’s a short note that I make about someone else’s content online #thoughts

Markata-Go

2026-03-24T17:30:39Z

💭 uvx.sh | Astral

2026-02-16T14:21:29Z

uvx.sh | Astral

Install Python tools with a single command. Powered by uv.

uvx.sh

astral silently dropped a clever uvx.sh to help builders reach a wider audience, no longer does a user need to have python installed prior to installing a python cli. It does have a hard requirement on having curl or wget available.

Note

This post is a thought. It’s a short note that I make about someone else’s content online #thoughts

Mc Poem

2026-01-23T20:07:02Z

format markdown with mdformat

2026-01-19T20:41:14Z

I really wish I would have got this right a few years ago. Theres a couple of flags I had to use to get mdformat to do hard wraps at 80 characters and not wreck tables. This mix of flags and plugins is workign really well for me so far.

mdfmt() {
    uvx \
        --with "mdformat-ruff" \
        --with "mdformat-beautysh" \
        --with "mdformat-web" \
        --with "mdformat-config" \
        --with "mdformat-gfm" \
        --with "mdformat-front-matters" \
        --with "mdformat-wikilink" \
        --with "mdformat-simple-breaks" \
        mdformat \
        --wrap 80 \
        --end-of-line lf \
        --codeformatters python \
        --codeformatters bash \
        "$@"
}

And as pre-commmit.

repos
  - repo: https://github.com/hukkin/mdformat
    rev: 1.0.0  # pin to the version you want
    hooks:
      - id: mdformat
        args:
          - --wrap
          - "80"
          - --end-of-line
          - lf
          - --codeformatters
          - python
          - --codeformatters
          - bash
        additional_dependencies:
          - mdformat-ruff
          - mdformat-beautysh
          - mdformat-web
          - mdformat-config
          - mdformat-gfm
          - mdformat-front-matters
          - mdformat-wikilink
          - mdformat-simple-breaks

My First Agentic Workflow

2026-01-19T09:40:20Z

In early 2026 I’m trying to lean more in to agentic workflows. The tools are not only better than they were a year ago, but available to me now unlike they were 6 months ago.

What I’m using #

At home I’m using opencode, the tooling here is fantastic. LSP incide of these things is incredible, mcp is fine when its needed. The free models it gives you are impressively good for free models, but they are still not the big models from the big providers. I’m using what work gives me, they give me a tool with access to good models, the models are great, the tools kinda suck. I’m being vaugue here because I dont share real work details.

Skepticism #

I’ve been skeptical the whole way, I see ai being a very useful tool. I remain Techbrophobic. It’s better than the non believers will tell you, and no where near as good as the hype bros will tell you. The industry is shitty and doing shitty things, I’m not here to change this, I’m here to do my thing and try to get better.

Software Engineering is not gone #

What I’m feeling is that agentic workflows with llms are not going to replace Software Engineering, I’m with Simon Willison holding out hope that it will actually enable more companies to have needs and expand the industry. I really see where these workflows allow us to see the forest for the trees and work at a higher level than we otherwise would be able to.

Setup #

/init

AGENTS.md

Issue - iterate #

feature request
bug report

issue.md

Plan - iterate #

Look at @issue.md and make a plan, then iterate on the plan.

plan.md

Execution #

Review - go back to plan/issue #

Changelog #

PR Review #

Dont Trust Users Tokens

2026-01-14T19:49:43Z

User states: Upon picking up an old project and trying to install pip says “cannot find a version to satisfy”

I’ve got this, I’ve had this a hundred times before it’s a python version, a rogue package, maybe a yank from the pinned deps. I pop open the project get us on the same commit. I get a different error, make a few updates and we are good, except the user gets the same error from the start.

They never saw the error I did, and my fix did not magically resolve their error. We circle all the things it could be for hours. I consistently wipe my venv, and recreate with ease, send them the commands I ran to no avail. Something is up and I can’t put my finger on it. We’ve checked all the things and inched as close as we can to running everything exactly the same.

Os
python version
Network vpn
uv version

Nothing makes any sense. Finally I throw in the towel, is it the artifact server. I forge a token and give him one to borrow.

BAM it works, like magic. The first sign of progress. Then he mentions.

Huh that’s odd cause I just got mine this morning

Failing to mention this any earlier that getting a new token for a service and it completely borked it! I get it though, the error was very oddly presented and not easy to see why

There it was all along, looking back in the logs I see his redacted token going to the wrong registry. One that does not include our packages, everything makes sense now. The reason it couldn’t find a version to satisfy was not a python version, os version, package conflict, it was that it couldn’t find a fucking version of the thing to begin with.

All this to say, don’t trust users tokens, save your time and just get fresh ones with them.

if you read this it’s all cool, like I said it’s all part of the job, no harsh feelings, at least we got a good story out of it right!

Characters

2026-01-09T18:58:22Z

Old Man Hardware #

Character Profile

Name: Graybeard McGee
Age: 64 years old
Role: Senior Systems Architect (counting down to retirement)

Background

Graybeard’s been coding since before most developers were born—starting with assembly on PDP-11 systems in the late 1970s. He still has his original DEC VT100 terminal in the garage and actually uses it occasionally. His collection of vintage computing gear would make a museum curator jealous.

Tech Stack

Loves: C, Assembly, FORTRAN, Perl (the “real” scripting language)
Hardware: Sun SPARCstations, DEC VAX, vintage IBM mainframes
Editor: Vi (not Vim—“Vim’s for kids who need training wheels”)
Version Control: CVS ( reluctantly moved to Git, complains about it daily)

Personality

Grumpy but surprisingly helpful when you prove you’re not “another JavaScript framework cowboy”
Believes “if it was good enough in 1985, it’s good enough now”
His office smells like old electronics and coffee
Has strong opinions about whitespace and indentation

Notable Quotes

“AI? That’s just fancy pattern matching. Call me when it can debug a memory leak in C.”
“You kids and your ‘cloud’… back in my day we called it ‘someone else’s computer’ and we didn’t trust it either.”
“No, I won’t help you with your React app. But if you’ve got a segfault, I’m your guy.”

Current Project Maintaining a 30-year-old C codebase that runs the company’s core system. Everyone’s afraid to touch it except him. He’s training exactly one junior developer to take over—mostly by complaining about how “kids these days can’t even read a man page.”

Image Prompts for Graybeard McGee #

Grumpy/Annoyed

Transform into GTA V promotional artwork, old bearded man with angry scowl and furrowed brow wearing classic computer geek glasses. Character art style with cinematic composition, game poster quality. He's gesturing frustratedly at a modern laptop, vintage calculator watch visible. No background, no text.

Nostalgic/Happy

Transform into GTA V promotional artwork, old bearded man with warm nostalgic smile gazing at vintage DEC VT100 terminal. Character art style with cinematic composition, game poster quality. Right hand gently touching retro keyboard, surrounded by classic computing gear. No background, no text.

Frustrated with AI

Transform into GTA V promotional artwork, old bearded man with disgusted expression and eyes rolled back. Character art style with cinematic composition, game poster quality. One hand rubbing temples, laptop showing ChatGPT interface, coffee mug with anti-AI slogan. No background, no text.

Patient/Mentoring

Transform into GTA V promotional artwork, old bearded man with patient knowing expression pointing at code. Character art style with cinematic composition, game poster quality. Vi editor with C code visible, teaching gesture toward junior developer. No background, no text.

Retirement Dreaming

Transform into GTA V promotional artwork, old bearded man with peaceful content expression leaning back in chair. Character art style with cinematic composition, game poster quality. Feet up on desk, calendar counting down days, relaxed accomplished pose. No background, no text.

Hacker Mode

Transform into GTA V promotional artwork, old bearded man with intense focused expression at terminal. Character art style with cinematic composition, game poster quality. Multiple monitors showing green code, vintage keyboard, cyberpunk glow on glasses. No background, no text.

Coffee Break

Transform into GTA V promotional artwork, old bearded man holding coffee mug that says 'I turn coffee into code'. Character art style with cinematic composition, game poster quality. Leaning casually against server racks, steam rising from mug. No background, no text.

DevOps Dad #

Character Profile

Name: Alex “Container Dad” Rodriguez
Age: 38 years old
Role: Senior Infrastructure Engineer

Background

Alex lives and breathes infrastructure but has somehow managed to balance being a senior Kubernetes expert with being an actual dad. His home lab makes most corporate data centers look like Raspberry Pi projects. He’s got more services self-hosted than most startups have employees, and he treats his Kubernetes clusters like his children—except his actual children get more attention sometimes.

Tech Stack

Loves: Kubernetes, Python, FastAPI, Docker, Terraform, Ansible
Infrastructure: Proxmox, TrueNAS, WireGuard, Nginx
DevTools: Neovim, GitLab CI/CD, Prometheus/Grafana
Blog: Hugo with custom CI/CD pipeline
Gaming: Steam Deck, Nintendo Switch, retro emulation

Personality

Calm under pressure (dealing with production outages and toddler tantrums)
Optimizes everything—including his kids’ bedtime routines
Believes “if you can’t containerize it, you shouldn’t be running it”
Turns every family problem into a DevOps metaphor
His wife thinks “kubectl apply” is his love language

Notable Quotes

“Parenting is just managing dependencies with more unpredictable APIs.”
“No, I can’t fix your WiFi. Yes, I can rebuild the entire network from scratch with Terraform.”
“The kids are fine, they just need a quick restart and maybe a configuration reload.”
“I don’t have a gaming addiction, I’m just stress-testing my home network infrastructure.”

Current Setup

Home lab: 3-node Proxmox cluster with 128GB RAM total
Self-hosted: Nextcloud, Jellyfin, Home Assistant, GitLab, MinIO
Blog: Kubernetes-deployed Hugo site with automated CI/CD
Gaming: Custom-built Steam server streaming to multiple devices
Kids’ devices: All managed through his custom Ansible playbooks

Daily Routine 6:00 AM: Check cluster health and monitoring alerts
6:30 AM: Deploy latest blog changes via GitLab CI
7:00 AM: Make coffee while updating Terraform state
8:00 AM: Get kids ready (manually, no automation yet)
9:00 AM: Work - managing massive Kubernetes clusters
6:00 PM: Family time (and maybe a quick gaming session)
9:00 PM: Kids bedtime, then home lab maintenance
11:00 PM: Game time or blog development

Image Prompts for DevOps Dad #

Multi-tasking Mode

Transform into GTA V promotional artwork, energetic dad in his 30s wearing wireless earbuds and hoodie. Character art style with cinematic composition, game poster quality. Balancing laptop showing Kubernetes dashboard while holding skateboard, coffee mug nearby. No background, no text.

Infrastructure Focus

Transform into GTA V promotional artwork, focused infrastructure engineer in late 30s with concentrated expression. Character art style with cinematic composition, game poster quality. Multiple monitors showing GitLab CI/CD pipelines, terminal windows with kubectl commands. No background, no text.

Skateboard Commute

Transform into GTA V promotional artwork, cool dad in 30s riding skateboard with backpack. Character art style with cinematic composition, game poster quality. Laptop visible in backpack, wearing tech company hoodie, confident smile. No background, no text.

Gaming Session

Transform into GTA V promotional artwork, intense gamer in his 30s wearing headset. Character art style with cinematic composition, game poster quality. Steam Deck in hand, dual monitors setup, energized expression. No background, no text.

Blog Deployment

Transform into GTA V promotional artwork, tech blogger in his 30s at standing desk. Character art style with cinematic composition, game poster quality. Hugo site preview on monitor, terminal showing git commands, satisfied expression. No background, no text.

Kids + Tech

Transform into GTA V promotional artwork, patient dad showing tablet to young child. Character art style with cinematic composition, game poster quality. Teaching kid about technology, warm encouraging expression, casual weekend attire. No background, no text.

Home Lab Pride

Transform into GTA V promotional artwork, proud infrastructure engineer standing by server rack. Character art style with cinematic composition, game poster quality. Gesturing toward home lab equipment, confident pose, tools in belt. No background, no text.

More characters coming soon…

Og-Sample

2026-01-09T08:19:29Z

I’m making an effort to make my og images better yet again, I’m going for that next 10% better. I really like my og images, but there are some title sizes that overflow. This page is a page to help debug. How I make these og images is for another day.

Script #

I use my own static site generator markata. I can use it to generate a list of posts wrapped in their og image. I use itertools to do a groupby so that I can do roughly every 5 characters larger, and see a wide variety of sizes.

from markata import Markata
from itertools import groupby

markata = Markata()
lens = [{'length': len(post.title), 'title': post.title, 'slug': post.slug} for post in m.posts]
lens_sorted = sorted(lens, key=lambda x: x["length"])

groups = {
    k: list(g)
    for k, g in groupby(lens_sorted, key=lambda x: (x["length"] // 5) * 5)
}

posts = [g[0] for g in groups.values()]
ogs = [ f'[![{post["title"]}](https://shots.waylonwalker.com/shot/?url=https://waylonwalker.com/{ post["slug"] }/og/&height=600&width=1200&scaled_width=1200&scaled_height=600&format=jpg&v=4)](https://waylonwalker.com/{ post["slug"] }/og/)' for post in posts]
print("\n\n".join(ogs))

OG-Sample #

shots #

I also do Posts tagged: shots posts that change the og template quite a bit by adding the image to the page. I’ll do the same script, but add a filter to the images.

from markata import Markata
from itertools import groupby

markata = Markata()
lens = [{'length': len(post.title), 'title': post.title, 'slug': post.slug} for post in m.filter('templateKey=="shots" and "family" not in tags')]
lens_sorted = sorted(lens, key=lambda x: x["length"])

groups = {
    k: list(g)
    for k, g in groupby(lens_sorted, key=lambda x: (x["length"] // 5) * 5)
}

posts = [g[0] for g in groups.values()]
ogs = [ f'[![{post["title"]}](https://shots.waylonwalker.com/shot/?url=https://waylonwalker.com/{ post["slug"] }/og/&height=600&width=1200&scaled_width=1200&scaled_height=600&format=jpg&v=4)](https://waylonwalker.com/{ post["slug"] }/og/)' for post in posts]
print("\n\n".join(ogs))

Krayt

2026-01-08T20:17:02Z

Arch Bt Setup For Zmk

2026-01-05T11:35:42Z

Gippity Glazing

2025-12-22T14:32:14Z

big slow diskcache

2025-12-22T14:12:26Z

nginx accepts markdown

2025-12-18T15:31:49Z

I Think I Built A Cms

2025-12-16T08:27:11Z

https://www.sanity.io/blog/you-should-never-build-a-cms

💭 Deprecations via warnings don’t work for Python libraries

2025-12-09T14:01:29Z

Deprecations via warnings don’t work for Python libraries

Seth Larson reports that urllib3 2.6.0 released on the 5th of December and finally removed the HTTPResponse.getheaders() and HTTPResponse.getheader(name, default) methods, which have been marked as...

Simon Willison’s Weblog · simonwillison.net

Deprecation warnings are so easy to miss, ignore, become numb to. Creating tools and processes to catch and address these issues is important. I’m surprised such big projects let deprecations just hang around for years.

Note

This post is a thought. It’s a short note that I make about someone else’s content online #thoughts

One Year Of Shots

2025-12-09T12:44:39Z

I’ve been running my shot scraper api for a year now. It creates og images for my website and thumbnails for my Reader using a headless chrome instance.

25870 shots
73 shots per day on average
12-09-2025 first shot taken

Histogram #

a histogram of shot counts by day

You can see in the histogram that I’ve had a few big spike days, This has been mostly for days that I’ve integrated into a new service or changed the endpoint. On February 13, 2025 I swapped over from using the post to using template specific to open graph images.

-content = "https://shots.waylonwalker.com/shot/?url={{ config.url }}{{ post.slug }}&height=600&width=1200&scaled_width=1200&scaled_height=600"
+content = "https://shots.waylonwalker.com/shot/?url={{ config.url }}{{ post.slug }}/og/&height=600&width=1200&scaled_width=1200&scaled_height=600"

Image Comparison

Original Post Image

originally I simply used an image of the post itself

New OG Image

In Feb 2025 I made OG specific templates to use for the OG images.

Swapping to og images

Collage #

For fun I made a collage of all the shots. It’s cool to see all of these together, I remember a lot of the thumbnails and posts. Many of them from my rss reader.

collage of all shots, click to see full size

I tried to make a video collage, but turns out it takes a long time to show all 25k shots in video form. It also turned out to be a bit of a strobe as I don’t yet have it figured out how to dark mode in headless chrome.

video collage of shots

video collage of 600 shots, I tried to include all, but even at 20fps its a 20 minute video.

Workspaces V1

2025-11-26T20:17:29Z

I’ve been using the same workflow since 2020, my post How I navigate tmux in 2021 is still very accurate to my workflow. It’s been great, but is a starting to feel like it needs some work. It feels like enough time has passed that I can make some significant improvements.

Issues #

COLUMNS env var

2025-11-26T13:24:38Z

setting COLUMNS env var to a number greater than 0 will make the terminal resize to that number of columns.

COLUMNS=80 uvx --from rich-cli rich myscript.py

Note

Not all programs respct the COLUMNS env var, but rich does, and a lot of stuff I’m building uses rich.

I discovered this when I was trying to make a low effort readme generated from the code, but did not depend on the size of terminal it was ran on.

# justfile
readme:
    echo "# Workspaces" > README.md
    echo "" >> README.md
    echo '``` bash' >> README.md
    COLUMNS=80 ./workspaces.py --help >> README.md
    echo '```' >> README.md

side effect of just stars

2025-11-11T21:33:33Z

I found an interesting side effect of manually running my script to generate [[ stars ]] posts is that you get notified when one gets renamed. Today I noticed that Ned Batchelder created a coveragepy org.