@miketheman.com and @sethmlarson.dev share some of the accomplishments of the PSF security team this year. That’s a lot of work for two people! And shoutout to the sponsors who make it possible to fund their roles.

Just published my notes from this year's Python Packaging Summit at PyCon US. If you've ever been curious what one of these is like from the inside: Wheel 2.0 + Zstandard, PyPI abuse vectors, conda vs pip, nab as a pip-resolver candidate. 🐍📦 bernat.tech/posts/pycon-... #PyConUS

Just published my notes from this year's Python Typing Summit at PyCon US. If you've ever been curious what one of these is like from the inside: intersection types, constraint sets in ty, tensor shapes in Pyrefly, Guido on direction. 🐍📝 bernat.tech/posts/pycon-... #PyConUS

If you’re using Python 🐍 and were excited about pylock.toml adoption, I’d appreciate your help testing pip-lock 🧪: discuss.python.org/t/help-me-sh...

pipx 1.12.0 now supports using uv as a backend 🚀 That means much faster environment creation and installs ⚡️ Details: pipx.pypa.io/stable/expla...

#PyTexas26 was a great conference. I took notes through every talk I attended and turned them into a recap — sharing for anyone who couldn't be there or who missed a session or two. bernat.tech/posts/pytexa...

Claude too quickly labels problems as “known issues” or “pre-existing failures,” and defaults to workarounds instead of fixing root causes. Even when told not to, it often ignores that and applies a quick hack anyway.

Really happy to have Rahul Devikar (github.com/rahuldevikar) joining as a co-maintainer of virtualenv! Thanks for everything you’ve already done to help keep things moving—glad to have you on board.

pipdeptree 2.33.0 is out — we finally dropped the dependency on pip and now use the stdlib for metadata, making things simpler and more robust; also, 2.32.0 added a rich output mode, which makes the tree much nicer to read github.com/tox-dev/pipd...

Wrote down everything I wish I knew earlier about Python supply chain security. Hash pinning, pip-audit, SBOMs, trusted publishing — the whole thing. Enjoy 🐍🔒 bernat.tech/posts/securi...

Puzzles me how virtualenv usage keeps going up when there's uv around, was expecting uv to eat into virtualenv popularity but seems not much impact 🤔

Finally created a dashboard where I can monitor all my open source projects and it's mostly interactive 👀 never could justify the investment doing it manually, but using agentic coding made it much easier. bernat.tech/about

tox TOML now supports every feature INI ever had, which means tox.ini is officially “frozen” — it’s not dead, it’s just enjoying a very stable retirement 🧓🧊 The future is tox.toml 🚀: tox.wiki/en/4.44.0/re...

New in pytest-env: .env file loading via env_files, --envfile for runtime .env switching, --pytest-env-verbose to debug every SET/SKIP/UNSET with source attribution, unset = true to remove vars, pytest.toml support, and subdirectory config overrides. github.com/pytest-dev/p...

virtualenv just got a fresh new logo and updated documentation! 🎉 Take a look at virtualenv.pypa.io and let us know if you spot any bugs or have ideas for improvements — feedback is always welcome.

Rewrote & reorganized the tox docs from the ground up 🚀 Now live at tox.wiki, structured using the Divio documentation system 📚Feedback welcome! 🙌

Spent the last few weeks migrating pyproject-fmt.readthedocs.io from taplo to tombi, rewriting the docs, fixing lots of bugs, and shipping new features (long-form tables!). Check it out and let me know how it goes—also, I probably introduced new bugs, please report them 😄👍

Just released a plugin for @jetbrains IDEs that adds integration for the fish shell scripts, plugins.jetbrains.com/plugin/29973... (uses the fish-lsp server for some of the features). Give it a go and file an issue if you find anything wrong 😎

🛠️ New in tox 4.33+: conditional set_env support with PEP-496 markers: set_env.UV_EXTRA_INDEX_URL = { replace = "env", name = "UV_EXTRA_INDEX_URL", default = "https://e.com/simple", marker = "sys_platform == 'darwin'" } 👉 github.com/tox-dev/tox/...

Refreshed and extended plugins.jetbrains.com/plugin/20536... so now displays more information and has a configuration page.

Proposals for next years conference season done and dusted 😎

My presentation about using rust from python from PyConUS got published very quickly this year 😁 youtu.be/CqOZdTFb4io?...

🚀 tox 4.26 is out! - Introduces free-threaded builds (just add t to your env name) - Adds support for Python 3.14 - Fixes virtualenv no longer bundling wheel on >3.9 - Drops support for Python 3.8 Huge thanks to all contributors! 🙌 🔗 github.com/tox-dev/tox/...

@hugovk.dev now that template strings are a thing can we use them in standard logging to use F string like formatting without performance complications? docs.astral.sh/ruff/rules/l... 🤔

See you there 😎

Thanks for the kind words @willingc.bsky.social 🙏 gaborbernat.github.io/new-wave-of-...

Today on our Speaker 📣 Spotlight 💡 we're highlighting @gjbernat.bsky.social who will be presenting Python Meet The Crab - Friendship At First Sight? Join us April 13 either in-person or virtually to watch. Get your ticket today pytexas.org/2025

What popular Python packages are using Rust (PyO3), I got cryptography, pydantic, ruff, uv and polars. What else am I missing?

PEP 751 has been accepted! peps.python.org/pep-0751/ This means #Python now has a lock file standard that can act as an export target for tools that can create some sort of lock file. And for some tools the format can act as their primary lock file format as well instead of some proprietary format.

@sethmlarson.dev do you have a newer page of Rust vs Python on PyPI chart? Is there a top n (10) most popular packages using rust?

Today on our Speaker 📣 Spotlight 💡 we're highlighting our second tutorial presenter, @gjbernat.bsky.social, who will presenting: The new wave of Python Packaging Join us April 11 in-person for this tutorial and learn all about modern Python packaging! pytexas.org/2025

Seems neither my tutorial or two talk proposals made the cut for this years PyCon US conference :)

Because prettier is a bit heavy weight for formatting XML/XSDs and there's no better alternative for a pre-commit hook that handles XML created xml-fmt pypi.org/project/xml-... (uses under the hood CPython stdlib XML formatter docs.python.org/3/library/xm...) - 3.9+.

Surprised me a bit that pre-commit-uv got 3 million downloads per month after just one of being released. 😱 Way more popular than expected 🤔 cc @crmarsh.com

The latest virtualenv github.com/pypa/virtual... adds support for freethreaded Pythons, thanks Robsdedude for the contribution!

Textual 1.0 has been released. 🥳 Three years in the making. A TUI framework that is bigger than the terminal. To celebrate, I want to give away some trade secrets. Because I am appalling at keeping secrets. Tell me what you think of the diagrams... textual.textualize.io/blog/2024/12...

We're excited to announce the #PyTexas 2025 tutorials! Join us April 11, 2025 as @alsweigart.bsky.social and @gjbernat.bsky.social lead us in two AMAZING tutorials! Get your tickets today: Schedule: https://www.pytexas.org/2025/schedule/tutorials/ Get Tickets 🎫 :

Today is my first day at Astral! Very excited to work with @crmarsh.com and the gang on Python tooling. It'll be fun (and strange) to focus on only one language for a bit!

This cute armadillo wants you to submit to the #PyTexas CFP. He told me so. https://pretalx.com/pytexas-2025/ Deadline to submit: 12/1 @ 11:59pm CST

Proposals for @pytexas.org and @pycon.us 2025 done 😀 Make sure to submit yours before the deadline ends 😇

I wrote a blog post explaining what the #PSF Conduct WG does since I have heard some people get it wrong. snarky.ca/what-the-psf...

@crmarsh.com seen UV@Jane street, you said with rust you have a high confidence that you will be able to run it. I don't share that opinion as I run into in the past cases where some dependency crate failed to compile, especially if you're using more novel platforms like ARM on Windows and MacOS 😅

Cut two releases to virtualenv today github.com/pypa/virtual... 👍

Everyone who just joined and is looking for Python people to connect with, I made a "starter pack" with many of the fun accounts. Add them to your followers list, #python: go.bsky.app/3Uzma1g

I conducted an analysis of return-in-finally in real world Python code. Just don't do it. TL;DR: - it is not used often - when it is used, it's usually used incorrectly - code authors find it easy to fix Draft PEP: peps.python.org/pep-0765/ Full report: github.com/iritkatriel/...

Exploring VS Code compatibility with different @pytest.org plugins this week- got a plugin which is failing? Add a comment 👇 github.com/microsoft/vs... also thanks @brianokken.bsky.social for this top plugin list I'm using as a jumping point pythontest.com/top-pytest-p...

Should we have a short form for variable type casting? How do people handle this Python typing use case? discuss.python.org/t/add-a-shor...

As @hynek.me already noticed, two of the rules this release stabilises are `sort-dunder-all` and `sort-dunder-slots`! These have a special place in my heart, as they were two of my first big Ruff contributions, before I formally joined Astral as an employee bsky.app/profile/hyne...