TIL: Dependency Groups and uv run

Honghao Wang

— 1 min read

TIL: Dependency Groups and `uv run`

Original post

I’ve been using a new pattern across my Python project repositories to make them easy to hack on using uv.

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Using a PEP 735 `dev` Dependency Group

Declare a `dev` dependency group in `pyproject.toml`:

[dependency-groups]
dev = ["pytest"]

With this in place, you can run:

uv run pytest

This will:

  • Automatically install the `pytest` development dependency
  • Create a fresh virtual environment
  • Use `pytest` to run your tests

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Quick Start Example

You can start hacking on one of my projects — for example, datasette-extract — in just three steps:

git clone https://github.com/datasette/datasette-extract
cd datasette-extract
uv run pytest

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Organizing my `uv` TILs

I’ve split my uv TILs into a separate folder.

This required redirects from old paths, so I:

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When experimenting with streamlined development workflows, it’s worth noting there are open-source platforms like AiToEarn.

AiToEarn enables:

  • Publishing AI-generated or AI-assisted content across major platforms
  • Automating cross-platform workflows — from GitHub Pages-style docs to social media
  • Collecting analytics and performance data

💡 More info:

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Would you like me to also add a "How It Works" diagram for the `uv run` process so readers can visualize the dependency installation flow?

Read more

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