Posts tagged: python

All posts with the tag "python"

268 posts latest post 2026-03-31
Publishing rhythm
Jan 2026 | 3 posts
how to escape variables in jinja templates

While updating my site to use Markata’s new configurable head I ran into some escaping issues. Things like single quotes would cause jinja to fail as it was closing quotes that it shouldnt have.

Jinja comes with a handy utility for escaping strings. I definitly tried to over-complicate this before realizing. You can just pipe your variables into e to escape them. This has worked pretty flawless at solving some jinja issues for me.

<p> {{ title|e }} </p>

Creating meta tags in Markata #

The issue I ran into was when trying to setup meta tags with the new configurable head, some of my titles have single quotes in them. This is what I put in my markata.toml to create some meta tags.

[[markata.head.meta]] name = "og:title" content = "{{ title }}"

Using my article titles like this ended up causing this syntax error when not escaped.

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Python direct dependencies in pyproject.toml

Hatch allows you to specify direct references for dependencies in your pyproject.toml file. This is useful when you want to depend on a package that is not available on PyPI or when you want to use a specific version from a Git repository. Often used for unreleased packages, or unreleased versions of packages.

docs

I've made my ipython config too complicated, let's fix it.

When I am developing python code I often have a repl open alongside of it running snippets ofcode as I go. Ipython is my repl of choice, and I hace tricked it out the best I can and I really like it. The problem I recently discovered is that I have way overcomplicated it.

So in the past the way I have setup a few extensions for myself is to add something like this to my ~/.ipython/profile_default/startup directory. It sets up some things like rich highlighting or in this example automatic imports. I even went as far as installing some of these in the case I didn’t have them installed.

import subprocess from IPython import get_ipython from IPython.core.error import UsageError ipython = get_ipython() try: ipython.run_line_magic("load_ext pyflyby", "inline") except UsageError: print("installing pyflyby") subprocess.Popen( ["pip", "install", "pyflyby"], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, ).wait() ipython.run_line_magic("load_ext pyflyby", "inline") print("installing isort") subprocess.Popen( ["pip", "install", "isort"], stdout=subprocess.DEVNULL,...

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markata extend <head> in configuration

Astronauts stunting some stylish color explosion

A long needed feature of markata has been the ability to really configure out templates with configuration rather. It’s been long that you needed that if you really want to change the style, meta tags, or anything in the head you needed to write a plugin or eject out of the template and use your own.

Now you can add some extra style to your site with the existing built-in template.

[[markata.head]] text = """ <style> img { width: 100%; height: auto; } ul { display: flex; flex-wrap: wrap; } </style> """

You can have more than one Head #

Each text entry in markata.head just gets appended raw into the head.

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Create a new Python Project with the Hatch Cli

I’m really getting into using hatch as my go to build system, and I am really liking it so far. I am slowly finding new things that just work really well. hatch new is one of those things that I didn’t realize I needed until I had it.

creating new versions created by myself with stable diffusion

❯ pipx run hatch new --help Usage: hatch new [OPTIONS] [NAME] [LOCATION] Create or initialize a project. Options: -i, --interactive Interactively choose details about the project --cli Give the project a command line interface --init Initialize an existing project -h, --help Show this message and exit.

Note! I am running all of these commands with pipx. I like to use pipx for all of my system level cli applications. To emphasis this point in the article I am going to use pipx run hatch, but you can pipx install hatch then just run hatch from there.

Running hatch new -i will ask let you interactivly choose details about the project, such as the project’s name.

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Versioning Python Projects with Hatch

Hatch has an amazing versioning cli for python packages that just works. It takes very little config to get going and you can start bumping versions without worry.

Hatch version cover image

creating new versions created by myself with stable diffusion

For trying out the hatch version cli let’s make a simple project with the terrible name pkg.

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From Markdown to Blog with Markata | lightning talk | python web conf 2022

Markata is a great python framework that allows you to go from markdown to a full website very quickly. You can get up and running with nothing more than Markdown. It is also built on a full plugin architecture, so if there is extra functionality that you want to add, you can create a plugin to make it behave like you want.

Full transparancy… I built markata.

The talk is live on YouTube. Make sure you check out the other videos from the conference. There were quite a few quality talks that deserve a watch as well.

https://youtu.be/Wq9YBamSgs0

Packages I Maintain

I open sourced the static site framework that I use to build my-blog among other side projects. It’s a plugins all the way down static site generator, that makes me happy to use.

{% gh_repo_list_topic “waylonwalker”, “markata” %}

my-blog is built on a number of small repos. I set it up this way so that creating content is fast and easy to do. I don’t have to worry about carrying around large images with my lightweight text files just to make some posts.

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I spoke at Python Web Conf 2022

I spoke at python webconf in March 2022 about how I deploy this blog on a continuous basis.

Building this blog has brought me a lot of benefits. I have a set of custom curated notes to help describe a problem and how to solve it to me. At theis point it’s not uncommon to google an Issue I am having and finding my own blog with exactly the solution I need at the top.

I also bump into people from time to time that recognize me from the blog, its a nice conversation starter, and street cred.

The talk recently released on Youtube, you can watch it without having a ticket to the conference for free. There were a bunch of other talks that you should check out too!

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I turned on 2FA for all of my pypi packages

I got all the pypi packages that I own behind 2 factor authentication. 💪

Recently this really made it’s rounds in the python news since pypi was requiring critical package maintainers to have 2FA on and even offering them hardware tokens to help them turn this on.

I feel like this caused a bit of confusion as turning on 2FA does not mean that you need to do anything different to deploy a package, and it DOES NOT require a hardware token. You can continue using your favorite 2FA app.

You might wonder what this means for my projects. It means that to edit any sensitive content such as pull a new api token, add/remove maintainers, or deleting a release I need to use a TOPT (time based one time password) application such as Google Authenticator, Microsoft Authenticator, Authy, or FreeOTP.

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I was on Talk Python

After years of listening to talkpython.fm I had the honor to be part of episode-337 to talk about Kedro for maintainable data science.

I was quite nervous to talk on a show that I helped shape my career in such a profound way. I started my journey towards software engineering near Michaels first few episodes. His discussions with such great developers over the years has made an huge impact on my skill. It has always given me great advice and topics to go deeper on.

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1 min read
python
use vim to remove duplicates

I just love how some features of vim are so discoverable and memorable once you really start to grasp it. Sorting and uniqing your files or ranges is one of those examples for me.

" sort the file :sort " sort the file only keeping unique lines :sort u " sort a range :'<,'> sort " sort a range only keeping unique lines :'<,'> sort u

I recently used this to dedupe my autogenerated links section for rich-syntax-range-style. More often I am using it to sort and uniqify objects like arrays and lists.

Here is what the markdown looks like.

* [py-tree-sitter](https://github.com/tree-sitter/py-tree-sitter) * [rich](https://github.com/Textualize/rich) * [@textualizeio](https://twitter.com/textualizeio) * [rich](https://github.com/Textualize/rich) * [another post](https://waylonwalker.com/designing-kedro-router) *...

Highlighting text ranges with Rich | python

{% for year in markata.map(“date.year”, filter=‘published’)|unique %}

{% for post in markata.map(‘post’, filter=“published and date.year == “+year|string, sort=‘date’) %}

markata 0.3.0 is 15-20% faster

image from Dall-e

a sprinter edging out his opponent by Dall-e

It’s about time to release Markata 0.3.0. I’ve had 8 pre-releases since the last release, but more importantly it has about 3 months of updates. Many of which are just cleaning up bad practices that were showing up as hot spots on my pyinstrument reports

Markata started off partly as a python developer frustrated with using nodejs for everything, and a desire to learn how to make frameworks in pluggy. Little did I know how flexible pluggy would make it. It started out just as my blog...

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get the version of any python package | python api

A common meta thing that I need in python is to find the version of a package. Most of the time I reach for package_name.__version__, but that does not always work.

In searching the internet for an answer nearly every one of them pointed me to __version__. This works for most projects, but is simply a convention, its not required. Not all projects implement a __version__, but most do. I’ve never seen it lie to me, but there is nothing stopping someone from shipping mismatched versions.

I appreciate it

While its not required its super handy and easy for anyone to remember off the top of their head. It makes it easy to start debugging differences between what you have vs what you see somewhere else. You can do this by dropping a __version__ variable inside your __init__.py file.

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Manage your displays with xrandr manager

xrandr is a great cli to manage your windows in a linux distro using x11, which is most of them. The issue is that I can never remember all the flags to the command, and if you are using it with something like a laptop using a dock the names of all the displays tend to change every time you redock. This makes it really hard to make scripts that work right every time.

Check out the deresmos/xrandr-manager for more details on it.

xrander-manager is a python cli application that is simply a nice interface into xrandr. So you must have xrandr already installed, which is generally just there on any x11 window manager, I’ve never had to install it.

As with any python cli that is indended to be used as a global/system level cli application I always install them with pipx. This automates the process of creating a

python linux