Python Bytes 445

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Michael #1: pyx - optimized backend for uv

via John Hagen (thanks again)
I’ll be interviewing Charlie in 9 days on Talk Python → Sign up (get notified) of the livestream here.
Not a PyPI replacement, more of a middleware layer to make it better, faster, stronger.
pyx is a paid service, with maybe a free option eventually.

Brian #2: Litestar is worth a look

James Bennett
Michael brought up Litestar in episode 444 when talking about rewriting TalkPython in Quart
James brings up
- scaling - Litestar is easy to split an app into multiple files
- Not using pydantic - You can use pydantic with Litestar, but you don’t have to. Maybe attrs is right for you instead.
Michael brought up
- Litestar seems like a “more batteries included” option.
- Somewhere between FastAPI and Django.

Brian #3: Django remake migrations

Suggested by Bruno Alla on BlueSky
In response to a migrations topic last week
django-remake-migrations is a tool to help you with migrations and the docs do a great job of describing the problem way better than I did last week
“The built-in squashmigrations command is great, but it only work on a single app at a time, which means that you need to run it for each app in your project. On a project with enough cross-apps dependencies, it can be tricky to run.”
“This command aims at solving this problem, by recreating all the migration files in the whole project, from scratch, and mark them as applied by using the replaces attribute.”
Also of note
- The package was created with Copier
- Michael brought up Copier in 2021 in episode 219
- It has a nice comparison table with CookieCutter and Yoeman
- One difference from CookieCutter is yml vs json.
- I’m actually not a huge fan of handwriting either. But I guess I’d rather hand write yml.
- So I’m thinking of trying Copier with my future project template needs.

Michael #4: django-chronos

Django middleware that shows you how fast your pages load, right in your browser.
Displays request timing and query counts for your views and middleware.
Times middleware, view, and total per request (CPU and DB).

Extras

Brian:

Test & Code 238: So Long, and Thanks for All the Fish
- after 10 years, this is the goodbye episode

Michael:

Auto-activate Python virtual environment for any project with a venv directory in your shell (macOS/Linux): See gist.
Python 3.13.6 is out.
Open weight OpenAI models
Just Enough Python for Data Scientists Course
The State of Python 2025 article by Michael

Joke: python is better than java

#445 Auto-activate Python virtual environments for any project

Python Bytes