Today I Learned

I am working through the textual tutorial, and I want to put it in a proper cli that I can pip install and run the command without textual run --dev app.py. This is a fine pattern, but I also want this to work when I don’t have a file to run.

I set up a new project running hatch new, and added the following entrypoint, giving me a tutorial cli command to run.

... [project.scripts] tutorial = 'textual_tutorial.tui:tui'

https://waylonwalker.com/hatch-new-cli/

If you are using setup.py, you can set up entrypoints in the setup command.

...

I like AnH0ang’s project kedro-aim.

A kedro plugin that enables logging to the ml experiment tracker aim

The work on PrismLauncher by PrismLauncher.

A custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once (Fork of MultiMC)

I’m really excited about learn-cloudformation, an amazing project by widdix. It’s worth exploring!

Learn how to use Infrastructure as Code on AWS with the help of CloudFormation.

For far too long I have had to fidget with v4l2oloopback after reboot. I’ve had this happen on ubuntu 18.04, 22.04, and arch.

After a reboot the start virtual camera button won’t work, It appears and is clickable, but never turns on. Until I run this command.

sudo modprobe v4l2loopback video_nr=10 card_label="OBS Video Source" exclusive_caps=1

October 18, 2022

linux

I ran into an issue where I was unable to ask localstack for its status. I would run the command and it would tell me that it didn’t have permission to read files from my own home directory. Let’s fix it

I would run this to ask for the status.

localstack status

And get this error

PermissionError: [Errno 13] Permission denied: '/home/waylon/.cache/localstack/image_metadata'

What happened #

It dawned on me that the first time I ran localstack was straight docker, not the python cli. When docker runs it typically runs as root unless the Dockerfile sets up a user and group for it.

...

Markata now allows you to create jinja extensions that will be loaded right in with nothing more than a pip install.

The entry for 0.5.0.dev2 from markata’s changelog

October 11, 2022

In my adventure to learn django, I want to be able to setup REST api’s to feed into dynamic front end sites. Potentially sites running react under the hood.

To get started lets open up a todo app that I created with django-admin startproject todo.

pip install djangorestframework

Install APP #

Now we need to declare rest_framwork as an INSTALLED_APP.

INSTALLED_APPS = [ ... "rest_framework", ... ]

create the api app #

Next I will create all the files that I need to get the api running.

...

I like openai’s project whisper.

Robust Speech Recognition via Large-Scale Weak Supervision

Markata now uses hatch as its build backend, and version bumping tool. setup.py, and setup.cfg are completely gone.

Markata 0.5.0 is now out, and it’s huge. Even though it’s the backend of this blog I don’t actually have that many posts directly about it. I’ve used it a bit for blog fuel in generic ways, like talking about pluggy and diskcache, but very little have I...

...

lkwq007 has done a fantastic job with stablediffusion-infinity. Highly recommend taking a look.

Outpainting with Stable Diffusion on an infinite canvas

Check out toumorokoshi and their project deepmerge.

A deep merging tool for Python core data structures

My next step into django made me realize that I do not have access to the admin panel, turns out that I need to create a cuper user first.

Right away when trying to setup the superuser I ran into this issue

django.db.utils.OperationalError: no such table: auth_user

Back to the tutorial tells me that I need to run migrations to setup some tables for the INSTALLED_APPS, django.contrib.admin being one of them.

python manage.py migrate

yes I am still running remote on from my chromebook.

...

I am continuing my journey into django, but today I am not at my workstation. I am ssh’d in remotely from a chromebook. I am fully outside of my network, so I can’t access it by localhost, or it’s ip. I do have cloudflared tunnel installed and dns setup to a localhost.waylonwalker.com.

I found this in settings.py and yolo, it worked first try. I am in from my remote location, and even have auth taken care of thanks to cloudflare. I am really hoping to learn how to setup my own auth with django as this is one of the things that I could really use in my toolbelt.

I have no experience in django, and in my exploration to become a better python developer I am dipping my toe into one of the most polished and widely used web frameworks Django to so that I can better understand it and become a better python developer.

If you found this at all helpful make sure you check out the django tutorial

The first thing I need to do is render out a template to start the project. For this I need the django-admin cli. To get this I am going the route of pipx it will be installed globally on my system in it’s own virtual environment that I don’t have to manage. This will be useful only for using startproject as far as I know.

pipx install django django-admin startproject try_django cd try_django

...

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.

...

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,...