March 23, 2026

#474 Astral to join OpenAI

45 minutes

Topics covered in this episode:

Starlette 1.0.0

Astral to join OpenAI

uv audit

Fire and forget (or never) with Python’s asyncio

Extras

Joke

Watch on YouTube

About the show

Sponsored by us! Support our work through:

Our courses at Talk Python Training

The Complete pytest Course

Patreon Supporters

Connect with the hosts

Michael: @[email protected] / @mkennedy.codes (bsky)

Brian: @[email protected] / @brianokken.bsky.social

Show: @[email protected] / @pythonbytes.fm (bsky)

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 11am PT. Older video versions available there too.

Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it.

Brian #1: Starlette 1.0.0

As a reminder, Starlette is the foundation for FastAPI

Starlette 1.0 is here! - fun blog post from Marcello Trylesinski

“The changes in 1.0 were limited to removing old deprecated code that had been on the way out for years, along with a few bug fixes. From now on we'll follow SemVer strictly.”

Fun comment in the “What’s next?” section:

“Oh, and Sebastián, Starlette is now out of your way to release FastAPI 1.0. 😉”

Related: Experimenting with Starlette 1.0 with Claude skills

Simon Willison

example of the new lifespan mechanism, very pytest fixture-like

@contextlib.asynccontextmanager

async def lifespan(app):

async with some_async_resource():

print("Run at startup!")

yield

print("Run on shutdown!")

app = Starlette(

routes=routes,

lifespan=lifespan

)

Michael #2: Astral to join OpenAI

via John Hagen, thanks

Astral has agreed to join OpenAI as part of the Codex team

Congrats Charlie and team

Seems like **Ruff** and uv play an important roll.

Perhaps ty holds the most value to directly boost Codex (understanding codebases for the AI)

All that said, these were open source so there is way more to the motivations than just using the tools.

After joining the Codex team, we'll continue building our open source tools.

Simon Willison has thoughts

discuss.python.org also has thoughts

The Ars Technica article has interesting comments too

It’s probably the death pyx

Simon points out “pyx is notably absent from both the Astral and OpenAI announcement posts.”

Brian #3: uv audit

Submitted by Owen Lemont

Pieces of uv audit have been trickling in. uv 0.10.12 exposes it to the cli help

Here’s the roadmap for uv audit

I tried it out on a package and found a security issue with a dependency

not of the project, but of the testing dependencies

but only if using Python < 3.10, even though I’m using 3.14

Kinda cool

Looks like it generates a uv.lock file, which includes dependencies for all project supported versions of Python and systems, which is a very thorough way to check for vulnerabilities.

But also, maybe some pointers on how to fix the problem would be good. No --fix yet.

Michael #4: Fire and forget (or never) with Python’s asyncio

Python’s asyncio.create_task() can silently garbage collect your fire-and-forget tasks starting in Python 3.12

Formerly fine async code can now stop working, so heads up

The fix? Use a set to upgrade to a strong ref and a callback to remove it

Is there a chance of task-based memory leaks? Yeah, maybe.

Extras

Brian:

Nobody Gets Promoted for Simplicity - interesting read and unfortunate truth in too many places.

pytest-check - All built-in check helper functions in this list also accept an optional xfail reason.

example: check.equal(actual, expected, xfail="known issue #123")

Allows some checks to still cause a failure to happen because you no longer have to mark the whole test as xfail

Michael:

TurboAPI - FastAPI + Pydantic compatible framework in Zig (see follow up)

Pyramid 2.1 is out (yes really! :) first release in 3 years)

Vivaldi 7.9 adds minimalist hide mode.

Migrated pythonbytes.fm and talkpython.fm to Raw+DC design pattern

Robyn + Chameleon package

Joke: We now have translation services

...more

View all episodes

By Michael Kennedy and Brian Okken

4.7

212212 ratings

March 23, 2026

#474 Astral to join OpenAI

45 minutes

Topics covered in this episode:

Starlette 1.0.0

Astral to join OpenAI

uv audit

Fire and forget (or never) with Python’s asyncio

Extras

Joke

Watch on YouTube

About the show

Sponsored by us! Support our work through:

Our courses at Talk Python Training

The Complete pytest Course

Patreon Supporters

Connect with the hosts

Michael: @[email protected] / @mkennedy.codes (bsky)

Brian: @[email protected] / @brianokken.bsky.social

Show: @[email protected] / @pythonbytes.fm (bsky)

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 11am PT. Older video versions available there too.

Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it.

Brian #1: Starlette 1.0.0

As a reminder, Starlette is the foundation for FastAPI

Starlette 1.0 is here! - fun blog post from Marcello Trylesinski

“The changes in 1.0 were limited to removing old deprecated code that had been on the way out for years, along with a few bug fixes. From now on we'll follow SemVer strictly.”

Fun comment in the “What’s next?” section:

“Oh, and Sebastián, Starlette is now out of your way to release FastAPI 1.0. 😉”

Related: Experimenting with Starlette 1.0 with Claude skills

Simon Willison

example of the new lifespan mechanism, very pytest fixture-like

@contextlib.asynccontextmanager

async def lifespan(app):

async with some_async_resource():

print("Run at startup!")

yield

print("Run on shutdown!")

app = Starlette(

routes=routes,

lifespan=lifespan

)

Michael #2: Astral to join OpenAI

via John Hagen, thanks

Astral has agreed to join OpenAI as part of the Codex team

Congrats Charlie and team

Seems like **Ruff** and uv play an important roll.

Perhaps ty holds the most value to directly boost Codex (understanding codebases for the AI)

All that said, these were open source so there is way more to the motivations than just using the tools.

After joining the Codex team, we'll continue building our open source tools.

Simon Willison has thoughts

discuss.python.org also has thoughts

The Ars Technica article has interesting comments too

It’s probably the death pyx

Simon points out “pyx is notably absent from both the Astral and OpenAI announcement posts.”

Brian #3: uv audit

Submitted by Owen Lemont

Pieces of uv audit have been trickling in. uv 0.10.12 exposes it to the cli help

Here’s the roadmap for uv audit

I tried it out on a package and found a security issue with a dependency

not of the project, but of the testing dependencies

but only if using Python < 3.10, even though I’m using 3.14

Kinda cool

Looks like it generates a uv.lock file, which includes dependencies for all project supported versions of Python and systems, which is a very thorough way to check for vulnerabilities.

But also, maybe some pointers on how to fix the problem would be good. No --fix yet.

Michael #4: Fire and forget (or never) with Python’s asyncio

Python’s asyncio.create_task() can silently garbage collect your fire-and-forget tasks starting in Python 3.12

Formerly fine async code can now stop working, so heads up

The fix? Use a set to upgrade to a strong ref and a callback to remove it

Is there a chance of task-based memory leaks? Yeah, maybe.

Extras

Brian:

Nobody Gets Promoted for Simplicity - interesting read and unfortunate truth in too many places.

pytest-check - All built-in check helper functions in this list also accept an optional xfail reason.

example: check.equal(actual, expected, xfail="known issue #123")

Allows some checks to still cause a failure to happen because you no longer have to mark the whole test as xfail