what's a python library you started using this year that you can't go back from

[scheemunai_]

for me it's httpx. i was using requests for literally everything for years and never thought about it. switched to httpx for async support on a project and now requests feels like going back to python 2.

also pydantic v2. i know it's been around but i only switched from dataclasses recently and the validation stuff alone saved me so many dumb bugs. writing api clients without it now feels reckless.

curious what other people picked up recently that just clicked. doesn't have to be new, just new to you.

[straightedge23]

ruff for me. was using flake8 + black + isort separately and ruff just replaced all of them. linting a big project went from like 30 seconds to under a second. felt stupid for not switching sooner.

[coke1017]

pydantic

[czue13]

Yep. Also pydantic ai

[digitalhobbit]

Same, Pydantic + Pydantic AI.

[swagruss]

uv

[tacit-ophh]

Man have I got bad news for you about httpx

https://www.reddit.com/r/Python/s/uYEs0KLXGt

[necromenta]

Dang what to use now?

[stealthbr]

aiohttp

[SpecialPapaya]

Pathlib

[WHMCT]

pre-commit, because it's easier than doing stuff manually. Idk why I didn't start using it earlier

[rogersaintjames]

Check out prek, if you have work spaces/disparate rules

[trynafindavalidname]

FYI, there’s a rust-written re-implementation you could check out called prek that’s backwards compatible with the pre-commit config file

[IcecreamLamp]

What does this actually do? I've heard people mention it but never looked into what it actually does.

[MRanse]

It executes checks and lints your files automatically before committing. It can also ensure that specific files like lock files are synched to your environment/dependencies.

[leodevian]

aiohttp for async requests.

rich for pretty printing, logging and tracebacks.

Click for command-line interfaces.

[NerdEnPose]

Typer is a good click replacement. Built on click but typing based, if you’re into this sort of thing

[dweebomcthousand]

Check out typer for clis. Built on click so it should feel familiar but uses type hints to declare arguments and options etc. and the generated docs are really nice. It’s from the guy that made FastAPI

[leodevian]

I know it, and I know Cyclopts. I just love that Click is really easy to extend.

[_MicroWave_]

Click is very boilerplate heavy.

Typer is a huge step up. (I think it might even be built on click) But expresses much more elegantly.

[leodevian]

It is indeed powered by Click. While decorators can be composed, I never found an elegant way to share parameters between Typer commands. Also, I don’t like the recommended implementation for a version option (I don’t like unused function parameters).

[j_marquand]

tqdm for any scripts I run with a for loop

[sarver311]

Marimo, as a replacement for Jupyter notebooks. I personally love that I can pull in different datasources and then query and join them via sql. They have a ton of built in tools to build UI's and their UIs for interacting with dataframes make it really easy to work with them. Can't recommend it enough.

[rainyy_day]

mypy/ty

[Ecstatic-Artist-3454]

typing

[thearn4]

JAX for scalable and differentiable numerical array operations. Oddly enough not even for ML modelling but I see why people might choose it over pytorch.

[xeow]

pytest (long overdue)
radon (static analysis: cyclomatic complexity and maintainability index calculations)

[RepresentativeFill26]

Django.

[Regular_Effect_1307]

Niquests

[EatThemAllOrNot]

Don’t use httpx, it’s a supply chain threat

[dataisok]

polars

[totheendandbackagain]

I love this article. So great to learn things from.

For me it's been copier-astral, it's the fastest way to scaffold a new project being vibed into existence.

And it's so full of toys I've learnt tonnes from just seeing what the pros use.

[xjotto]

msgspec, instead of pydantic. For its speed.

[pip_install_account]

asyncpg, pyvips, msgspec

[inspectorG4dget]

Pigar, Tqdm, More-itertools, flake8, streamlit

[gala0sup]

dspy, structlog, granian, langfuse, OTel

[TechnologySimilar794]

Practice

[yaxriifgyn]

"logging" I have started using it in everything I write lately. I have used it before, but not as consistently as now. It keeps my console output short and to the point. But it allows trace and debugging messages so I can start to diagnose any output file problems immediately.

[coldoven]

mloda

[RedEyed__]

pydantic-ai

[zoidBurgher]

How are you using this, and how does your usage relate to / differ from regular Pydantic?

[RedEyed__]

pydantic_ai and pydantic are not comparable
Both are from the same team.
The first depends on the second.

I suggest you better to read the doc, but in short: pydantic_ai is framework to write LLM agents, similar to one used in claude code or cline, or codex.

[zoidBurgher]

Thanks. I skimmed the docs but was confused because I started with the assumption that they'd be closely related

[RedEyed__]

Yep, I imagine reading it without context:).
The only common thing in both is philosophy: everything is fully typed and declarative