Topics covered in this episode:
- **[pip 25.1 has dependency groups, pylock.toml, plus more](https://ichard26.github.io/blog/2025/04/whats-new-in-pip-25.1/?featured_on=pythonbytes))**
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Brian #1: pip 25.1 has dependency groups, pylock.toml, plus more)
Dependency groups, PEP 735, supported
`# pyproject.toml
[dependency-groups]
test = ["pytest", "pytest-xdist"]
lint = ["mypy", "isort"]
# Dependency Groups can include other groups! ✨
dev = [ {include-group = "test"}, {include-group = "lint"} ]
`
-
Package installation progress bar
Resumable downloads
Experimental lockfile generation, PEP 751, with pip lock
so cool
pip index versions is stable, no longer experimental
use this to get a list of available versions
ex: python3 -m pip index versions pytest-check
combine with --json to get a nice script readable output
Michael #2: aiohttp goes free threaded)
Thanks to months of consistent contributions by Lysandros Nikolaou, all of the mandatory dependencies of #aiohttp) now ship free-threaded variants of #wheels)!
This unlocks the same in aiohttp)!
Brian #3: uv 0.6.15 supports pylock.toml)
Discovered through Brett Cannon)
So far, these projects support pylock.toml
pip
pip-audit
pdm
uv
With uv
To export a uv.lock to the pylock.toml format,
run: uv export -o pylock.toml
To generate a pylock.toml file from a set of requirements,
run: uv pip compile -o pylock.toml -r requirements.in
To install from a pylock.toml file,
run: uv pip sync pylock.toml or uv pip install -r pylock.toml
Michael #4: Whenever)
via Pat Decker
Typed and DST-safe datetimes for Python, available in Rust or pure Python.
Whenever helps you write correct and type checked datetime code.
It's also way faster than other third-party libraries—and usually the standard library as well.
Extras
Brian:
Michael:
Joke: Can you Vibe?
