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Charlie Marsh: Accelerating Python Tooling With Ruff and uv | Real Python Podcast

Are you looking for fast tools to lint your code and manage your projects? How is the Rust programming language being used to speed up Python tools? This week on the show, we speak with Charlie Marsh about his company Astral and their tools, uv and Ruff. 👉 Links from the show: https://realpython.com/podcasts/rpp/238/ Charlie started working on Ruff as a proof of concept, stating that Python tooling could be much faster. He had seen similar gains in JavaScript tools written in Rust. The project started as a speedy linter with a small ruleset. It's grown to include code formatting and over 800 built-in linting rules. Last year, the team at Astral started working on a Python package and project manager written in Rust. As a single tool, uv can replace pip, pip-tools, pipx, poetry, pyenv, and more. We discuss how uv can install and manage versions of Python and run scripts without thinking about virtual environments or dependencies. Charlie talks about growing the team at Astral over the past couple of years. We also discuss the funding model Astral has adopted and sustaining open-source software. This episode is sponsored by Postman. Topics: 00:00:00 -- Introduction 00:03:37 -- How did you get involved in open source? 00:07:01 -- Fostering a community around a project 00:11:32 -- Python tooling could be much, much faster 00:15:45 -- Changing the ergonomics of tooling 00:19:59 -- What is ruff and what jobs can it do? 00:22:23 -- How do you configure ruff? 00:26:02 -- Where do the linting rules come from? 00:29:29 -- Can you build your own rules? 00:31:28 -- Performance difference for ruff 00:36:25 -- Installing ruff 00:37:34 -- The rustification of Python 00:40:52 -- The initial features and release of uv 00:45:07 -- Installing python 00:47:50 -- Taking over the python-build-standalone project 00:53:02 -- Installation methods and suggestions 00:55:37 -- Video Course Spotlight 00:57:07 -- The project API 01:01:57 -- Inline script metadata and PEP 723 01:06:49 -- Installing tools with uvx 01:09:37 -- Project management 01:11:20 -- Astral as company and VC funding 01:19:23 -- New static type checker 01:26:15 -- What are you excited about in the world of Python? 01:27:12 -- What do you want to learn next? 01:28:52 -- How can people follow your work online? 01:29:34 -- Thanks and goodbye 👉 Links from the show: https://realpython.com/podcasts/rpp/238/