Tiny TIL: I just figured out how to run pytest with a different Python version against my pyproject.toml/setup.py projects using uv run uv run --python 3.12 --with '.[test]' pytest til.simonwillison.net/pytest/pytes... - ThreadSky

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simonwillison.net • 22 days ago

Tiny TIL: I just figured out how to run pytest with a different Python version against my pyproject.toml/setup.py projects using uv run

uv run --python 3.12 --with '.[test]' pytest

https://til.simonwillison.net/pytest/pytest-uv

Comments

postlabor.bsky.social•21 days ago

i have a question, how do you so routinely and meticulously update your website with TILs, tutorials, notes, etc daily? It's impressive and I'd like to start being this efficient and productive at maintaining a blog and knowledge repo myself! any tips are welcomed!

simonwillison.net•21 days ago

I am self employed, which helps a lot! Most of my shorter form pieces only take 10 to 15 minutes to right, because I have had a lot of practice

jabid.in•21 days ago

That’s super handy and I’ll be using this a lot before upgrades.

jfhbrook.bsky.social•22 days ago

I can finally ditch tox??

tamilthought.bsky.social•21 days ago

Neat

albertotb.com•22 days ago

This is really neat, put this in a Makefile for a bunch of Python versions and can be an alternative to tox/nox for simple cases!

watsonix.bsky.social•21 days ago

@simonwillison.net do you have a favorite way to do pytest-like LLM evals? Deterministic functions and/or LLM-as-judge

simonwillison.net•21 days ago

Not yet, and I'm still hoping to figure something out that I like

watsonix.bsky.social•21 days ago

Yeah it seems to be a weird blind spot for the industry. Weird because it seems like everyone building anything for which they desire defined repeatable behavior with LLMs should need this more than python developers need pytest. Otherwise you wind up with regression whack-a-mole

watsonix.bsky.social•21 days ago

Parea is a solution that is workable but still young. We've been using it with medium success.

Langfuse is something else I have been considering: https://langfuse.com/docs/datasets/overview

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