Python Bytes

• New project to shorten django-admin to django because we are not monsters
• django-unicorn: The magical reactive component framework for Django
• Testing some tidbits
• The State of Python 2024 article
• Extras
• Joke

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 10am 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: New project to shorten django-admin to django because we are not monsters

• Jeff Tripplet has created django-cli-no-admin to shorten django-admin to just django.
• “One of the biggest mysteries in Django is why I have to run django-admin from my terminal instead of just running django. Confusingly, django-admin has nothing to do with Django’s admin app.”
• Instead of typing things like: django-admin startproject mysite projectname
• We can type the shorter: django startproject mysite projectname
• I love this kind of developer speedup / comfort improvements
• And yes, Jeff wants Django to eventually include this as the default way to run the command line utilities.

Michael #2: django-unicorn: The magical reactive component framework for Django

• Add modern site functionality: Quickly add in simple interactions to regular Django templates without learning a new templating language.
• Skip the JavaScript build tools
• No API required: Skip creating a bunch of serializers and just use Django.

Brian #3: Testing some tidbits

• Ned Batchelder
• Different ways to test to see if a string has only 0 or 1 in it.
• And also, a way to check all the different ways to make sure they work.
• Fun post, and I learned about
  • cleandoc - a way to strip leading blank space and maintain code block indentation
    • I usually use textwrap.dedent()
  • partition - splitting strings based on a substring
  • Using | to pass imports to eval() - I don't use eval much.
• However, no pytest!
• Here’s a way to check all this with pytest:
  • Testing some tidbits with pytest

Michael #4: The State of Python 2024 article

1. Python usage with other languages drops as general adoption grows
2. 41% of Python developers have under 2 years of experience
3. Python learning expands through diverse channels
4. The Python 2 vs. 3 divide is in the distant past
5. Flask, Django, and FastAPI remain top Python web frameworks
6. Most Python web apps run on hyperscale clouds
7. Containers over VMs over hardware
8. uv takes Python packaging by storm

Extras

Brian:

• More Django: Dracula Theme for Django Admin

Michael:

• Zen Browser update
• Office refresh
• Transcripts (in some players)

Joke:

• Volkswagen, passing all the tests

• jiter
• A new home for python-build-standalone
• moka-py
• uv: An In-Depth Guide
• Extras
• Joke

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 10am 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.

Michael #1: jiter

• Fast iterable JSON parser.
• About to be the backend for Pydantic and Logfire.
• Currently powers OpenAI / ChatGPT (along with Pydantic itself), at least their Python library, maybe more.
• jiter has three interfaces:
  • JsonValue an enum representing JSON data
  • Jiter an iterator over JSON data
  • PythonParse which parses a JSON string into a Python object
• jiter-python - This is a standalone version of the JSON parser used in pydantic-core. The recommendation is to only use this package directly if you do not use pydantic

Brian #2: A new home for python-build-standalone

• Charlie Marsh
• See also Transferring Python Build Standalone Stewardship to Astral from Gregory Szorc
• python-build-standalone is the project that has prebuilt binaries for different architectures.
• used by uv python install 3.12 and uv venv .venv --python 3.12 and uv sync
• This is good stability news for everyone.
• Interesting discussion of prebuilt Python from Charlie

Michael #3: moka-py

• A high performance caching library for Python written in Rust
• moka-py is a Python binding for the highly efficient Moka caching library written in Rust.
• This library allows you to leverage the power of Moka's high-performance, feature-rich cache in your Python projects.
• Features
  • Synchronous Cache: Supports thread-safe, in-memory caching for Python applications.
  • TTL Support: Automatically evicts entries after a configurable time-to-live (TTL).
  • TTI Support: Automatically evicts entries after a configurable time-to-idle (TTI).
  • Size-based Eviction: Automatically removes items when the cache exceeds its size limit using the TinyLFU policy.
  • Concurrency: Optimized for high-performance, concurrent access in multi-threaded environments.

Brian #4: uv: An In-Depth Guide

• On SaaS Pegasus blog, so presumably by Cory Zue
• Good intro to uv
• Also a nice list of everyday commands
  • Install python: uv python install 3.12
    • I don’t really use this anymore, as uv venv .venv --python 3.12 or uv sync install if necessary
  • create a virtual env: uv venv .venv --python 3.12
  • install stuff: uv pip install django
  • add project dependencies
  • build pinned dependencies
• Also discussion about adopting the new workflow

Extras

Brian:

• PydanticAI - not sure why I didn’t see that coming
• In the “good to know” and “commentary on society” area:
  • Anti-Toxicity Features on Bluesky
  • The WIRED Guide to Protecting Yourself From Government Surveillance

Michael:

• Go sponsor a bunch of projects on GitHub
• Registration is open for PyCon

Joke: Inf

• Loop targets
• asyncstdlib
• Bagels: TUI Expense Tracker
• rloop: An AsyncIO event loop implemented in Rust
• Extras
• Joke

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 10am 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: Loop targets

• Ned Batchelder
• I don’t think I would have covered this had it not been the surprising opposition to Ned’s code.

• Here’s the snippet:

  params = {
    "query": QUERY,
    "page_size": 100,
  }
  *# Get page=0, page=1, page=2, ...*
  **for** params["page"] in itertools.count():
    data = requests.get(SEARCH_URL, params).json()
    **if** not data["results"]:
      **break**
    ...
  

• Ned is utilizing the assignment in the for loop to use the value of count() and store it into the params["page"].

• The article includes another version with a temp variable page_num, which I think the naysayers would prefer.
• But frankly, I think both are fine. Why not put the value right where you want it?

Michael #2: asyncstdlib

• The asyncstdlib library re-implements functions and classes of the Python standard library to make them compatible with async callables, iterables and context managers.
• It is fully agnostic to async event loops and seamlessly works with asyncio, third-party libraries such as trio, as well as any custom async event loop.
• Full set of async versions of advantageous standard library helpers, such as zip, map, enumerate, functools.reduce, itertools.tee, itertools.groupby and many others.
• Safe handling of async iterators to ensure prompt cleanup, as well as various helpers to simplify safely using custom async iterators.
• Small but powerful toolset to seamlessly integrate existing sync code into async programs and libraries.

Brian #3: Bagels: TUI Expense Tracker

• Jax Tam

• “Bagels expense tracker is a TUI application where you can track and analyse your money flow, with convenience oriented features and a complete interface.

• Why an expense tracker in the terminal? I found it easier to build a habit and keep an accurate track of my expenses if I do it at the end of the day, instead of on the go. So why not in the terminal where it's fast, and I can keep all my data locally?”

• Who hasn’t wanted to write their own expense tracker?

• This implementation is fun for lots of reasons
  • It’s still new and pretty small, so forking it for your own uses should be easy
  • Built on textual is fun
  • install instructions based on uv tool seems to be the new normal:
    • uv tool install --python 3.13 bagels
  • test suite started
  • pretty useful as is, actually
  • Nice that it includes a roadmap of future goals
  • Would be a fun project to help out with for anyone looking for anyone looking for a shiny new codebase to contribute to.

Michael #4: rloop: An AsyncIO event loop implemented in Rust

• An AsyncIO event loop implemented in Rust
• From Giovanni Barillari, Creator of Granian
• RLoop is an AsyncIO event loop implemented in Rust on top of the mio crate.
• Disclaimer: This is a work in progress and definitely not ready for production usage.
• Run asyncio.set_event_loop_policy(rloop.EventLoopPolicy()) and done.
• Similar to uvloop.

Extras

Brian:

• I’m currently listening to Four Thousand Weeks - Time Management for Mortals by Oliver Burkeman for the second time. Highly recommend.
• Development Advent Calendars for 2024 - Adrian Roselli
• Black Friday at PythonTest.com

Michael:

• Docker cluster monitor
• Compare engagement across Mastodon / Bsky / Twitter
  • https://bsky.app/profile/pythonbytes.fm/post/3lbseqgr5m22z
  • https://fosstodon.org/@pythonbytes/113545509565796190
  • https://x.com/pythonbytes/status/1861166179236319288
• Back on #277 we talked about StrEnum. Got a nice chance to use it this weekend.
• Maybe Finance
• Go sponsor a bunch of projects on GitHub
• Black Friday at Talk Python

Joke: CTRL + X onion

• Talk Python rewritten in Quart
• PyPI now supports digital attestations
• Django Rusty Templates
• PEP 639 is now supported by PYPI
• Extras
• Joke

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 10am 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.

Michael #1: Talk Python rewritten in Quart

• Rewrote all of talkpython.fm in Quart (10k lines of code total, 4k changed)
• Considered
  • FastAPI
  • Litestar
  • Django
  • Hugo Static Site + Python
  • Flask
• Discussed the multistage upgrade / conversion process
• Automating tests for all 1,000 pages

Brian #2: PyPI now supports digital attestations

• Dustin Ingram
• “Attestations provide a verifiable link to an upstream source repository: By signing with the identity of the upstream source repository, such as in the case of an upload of a project built with GitHub Actions, PyPI's support for digital attestations defines a strong and verifiable association between a file on PyPI and the source repository, workflow, and even the commit hash that produced and uploaded the file. Additionally, publishing attestations to a transparency log helps mitigate against both compromise of PyPI and compromise of the projects themselves.”
• For maintainers
  • If using GH Actions and Trusted Publishing
    • make sure you use pypa/gh-action-pypi-publish, version v1.11.0 or newer
    • that’s it
  • If not
    • “Support for automatic attestation generation and publication from other Trusted Publisher environments is planned.”
    • “While not recommended, maintainers can also manually generate and publish attestations.”
• See also
  • PyPI Introduces Digital Attestations to Strengthen Python Package Security
    • by Sarah Gooding
  • Are we PEP 740 yet?

Michael #3: Django Rusty Templates

• by Lily Foote
• An experimental reimplementation of Django's templating language in Rust.
• Goals
  • 100% compatibility of rendered output.
  • Error reporting that is at least as useful as Django's errors.
  • Improved performance over Django's pure Python implementation.

Brian #4: PEP 639 is now supported by PYPI

• from Brett Cannon
• PEP 639 – Improving License Clarity with Better Package Metadata
• For project metadata, use these fields: license and license-files:

• Examples license field

  [project]
  license = "MIT"
  
  [project]
  license = "MIT AND (Apache-2.0 OR BSD-2-clause)"
  
  [project]
  license = "MIT OR GPL-2.0-or-later OR (FSFUL AND BSD-2-Clause)"
  
  [project]
  license = "LicenseRef-Proprietary"
  

• Examples of license-files:

  [project]
    license-files = ["LICEN[CS]E*", "AUTHORS*"]
  
    [project]
    license-files = ["licenses/LICENSE.MIT", "licenses/LICENSE.CC0"]
  
    [project]
    license-files = ["LICENSE.txt", "licenses/*"]
  
    [project]
    license-files = []
  

Extras

Brian:

• Playground Wisdom: Threads Beat Async/Await - interesting read from Armin Ronacher about different language abstractions around concurrency.
• PythonTest.com Discord community is now live
  • Launched last week, as of this morning we’ve got 89 members
  • Anyone already a pythontest community member has received an invite
  • Anyone can join through courses.pythontest.com
• Everything at pythontest.com is 20% off through Dec 2 with code turkeysale2024
• “Python Testing with pytest” eBook 40% off through Dec 2, use code turkeysale2024

Michael:

• Python 3.14.0a2 released
• Starter packs:
  • Michael’s Python people: https://bsky.app/starter-pack/mkennedy.codes/3lbdnupl26e2x
  • Directory: https://blueskydirectory.com/starter-packs/all

Joke: curl - heavy metal style!

• Thoughts on Django’s Core
• futurepool
• Don't return named tuples in new APIs
• Ziglang: Migrating from AWS to Self-Hosting
• Extras
• Joke

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 10am 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: Thoughts on Django’s Core

• Carlton Gibson
• Great discussion on
  • Django and Core vs Plugins
  • Sustainability with limited people
  • Keeping core small
  • The release cycle
  • eembrace plugins vs endorsing plugins.

Michael #2: futurepool

• via Pat Decker
• Takes the concept of multiprocessing Pool to the async/await world.

• Create a pool then delegate the work:

  async with FuturePool(2) as fp:
    result = await fp.map(async_pool_fn, range(10))
  

• I would LOVE to see something like this in a broader background asyncio worker pool concept.

• But that concept doesn’t exist in asyncio in Python and that’s a failing of the framework IMO.

Brian #3: Don't return named tuples in new APIs

• Brett Cannon
• First off, I’m grateful for any post that talks about APIs and the API is a module, class, or package API and not a Web/REST API. The term API existed long before the internet.
• “e.g., get_mouse_position() very likely has a two-item tuple of X and Y coordinates of the screen”
• “it actually makes your API more complex for both you and your users to use. For you, it doubles the data access API surface for your return type as you have to now support index-based and attribute-based data access forever (or until you choose to break your users and change your return type so it doesn't support both approaches)”
• “… you probably don't want people doing with your return type, like slicing, iterating over all the items …”
• Alternatives
  • class
  • dataclass
  • dictionary
  • TypedDict
  • SimpleNamespace
• “My key point in all of this is to prefer readability and ergonomics over brevity in your code. That means avoiding named tuples except where you are expanding to tweaking an existing API where the named tuple improves over the plain tuple that's already being used.”

Michael #4: Ziglang: Migrating from AWS to Self-Hosting

• The Rust Foundation for example, reports that they spent $404,400 on infrastructure costs in 2023.
• Zig lang has decided to use a single big cloud machine + mirrors

Extras

Brian:

• Changing the Python Test community
  • Was started to answer questions for Test & Code listeners years ago.
  • Primarily pytest questions
  • Used to be Slack. Then moved to Podia forum.
  • Now I’m trying to work out a Discord solution that is both sustainable and usable.

Michael:

• PWang Bsky essay
• Building A Business From Python Expertise - Michael Kennedy on Work Item Podcast
• Subscribe to package releases, just put .atom on the end of their releases URL, for example:
  • github.com/mikeckennedy/jinja_partials/releases ← add .atom for RSS
• pytest-bdd 8.0.0 was just released via Jamie Thomson
  • The big feature (in Jamie’s opinion) is the addition of data tables https://github.com/pytest-dev/pytest-bdd/blob/master/CHANGES.rst#800---2024-11-14

Joke: Breaking: JavaScript Developer Commits to Framework for Record-Breaking 3 Weeks

• terminal-tree
• posting: The API client that lives in your terminal
• Extra, extra, extra
• UV does everything or enough that I'm not sure what else it needs to do
• Extras
• Joke

About the show

Sponsored by:

• ScoutAPM - Django Application Performance Monitoring
• Codeium - Free AI Code Completion & Chat

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 10am 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.

Michael #1: terminal-tree

• An experimental filesystem navigator for the terminal, built with Textual
• Tested in macOS only at this point. Chances are very high it works on Linux. Slightly lower chance (but non-zero) that it works on Windows.
  • Can confirm it works on Linux

Brian #2: posting: The API client that lives in your terminal

• Also uses Textual
• From Darren Burns
• Interesting that the installation instructions recommends using uv:
  • uv tool install --python 3.12 posting
• Very cool. Great docs. Beautiful. keyboard centric, but also usable with a mouse.
• “Fly through your API workflow with an approachable yet powerful keyboard-centric interface. Run it locally or over SSH on remote machines and containers. Save your requests in a readable and version-control friendly format.”
• Able to save multiple environments
• Great colors
• Allows scripting to run Python code before and after requests to prepare headers, set variables, etc.

Michael #3: Extra, extra, extra

• spaCy course swag give-away, enter for free
• New essay: Opposite of Cloud Native is?
• News: We've moved to Hetzner
• New package: Introducing chameleon-flask package
• New release: Listmonk Python client
• TIOBE Update
• PEP 750 – Template Strings
• Canary email
• Left Omnivore, for Pocket, left Pocket for, …, landed on Instapaper
  • Supports direct import from Omnivore and Pocket
  • Though Hoarder is compelling
• Trying out Zen Browser
  • Wasn’t a fan of Arc (especially now) but the news turned me on to Zen

Brian #4: UV does everything or enough that I'm not sure what else it needs to do

• Jeff Triplett
• “UV feels like one of those old infomercials where it solves everything, which is where we have landed in the Python world.”
• “My favorite feature is that UV can now bootstrap a project to run on a machine that does not previously have Python installed, along with installing any packages your application might require.”
• Partial list (see Jeff’s post for his complete list)
  • uv pip install replaces pip install
  • uv venv replaces python -m venv
  • uv run, uv tool run, and uv tool install replaces pipx
  • uv build - Build your Python package for pypi
  • uv publish - Upload your Python package to pypi, replacing twine and flit publish

Extras

Brian:

• Coverage.py originally was just one file
• Trying out BlueSky brianokken.bsky.social
  • Not because of Taylor Swift, but nice.
  • There are a lot of Python people there.

Joke: How programmers sleep

• GitHub action security: zizmor
• Python is now the top language on GitHub
• Python 3.13, what didn't make the headlines
• PyCon US 2025
• Extras
• Joke

About the show

Sponsored by:

• ScoutAPM - Django Application Performance Monitoring
• Codeium - Free AI Code Completion & Chat

Connect with the hosts

• Michael: @[email protected]
• Brian: @[email protected]
• Show: @[email protected]

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am 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: GitHub action security: zizmor

• Article: Ned Batchelder
• zizmor: William Woodruff & others
• “a new tool to check your GitHub action workflows for security concerns.”
• Install with cargo or brew, then point it at workflow yml files.
• It reports security concerns.

Michael #2: Python is now the top language on GitHub

• Thanks to Pat Decker for the heads up.
• A rapidly growing number of developers worldwide
  • This suggests AI isn’t just helping more people learn to write code or build software faster—it’s also attracting and helping more people become developers. First-time open source contributors continue to show wide-scale interest in AI projects. But we aren’t seeing signs that AI has hurt open source with low-quality contributions.
• Python is now the most used language on GitHub as global open source activity continues to extend beyond traditional software development.
  • The rise in Python usage correlates with large communities of people joining the open source community from across the STEM world rather than the traditional community of software developers.
• There’s a continued increase in first-time contributors to open source projects. 1.4 million new developers globally joined open source with a majority contributing to commercially backed and generative AI projects.
  • Notably, we did not see a rise in rejected pull requests. This could indicate that quality remains high despite the influx of new contributors.

Brian #3: Python 3.13, what didn't make the headlines

• Some pretty cool updates to pdb : the command line Python debugger
  • multiline editing
  • code completion
• pathlib has a bunch of performance updates
• python -m venv adds a .gitignore file that auto ignores the venv.

Michael #4: PyCon US 2025

• Site is live with CFP and dates
• Health code is finally reasonable: “Masks are Encouraged but not Required”
• PyCon US 2025 Dates
  • Tutorials - May 14-15, 2025
  • Sponsor Presentations - May 15, 2025
  • Opening Reception - May 15, 2025
  • Main Conference and Online - May 16-18, 2025
  • Job Fair - May 18, 2025
  • Sprints - May 19-May 22, 2025

Extras

Brian:

• Please publish and share more - Jeff Triplett

Michael:

• pre-commit-uv
  • Just spoke with Sefanie Molin about pre-commit hooks on Talk Python
• Curse you Omnivore!
• We have moved to hetzner
• Typora markdown app
• free-threaded Python is now available via uv

  uv self update
  uv python install --python-preference only-managed 3.13t
  

Joke: Debugging char

• Python 3.14.0 alpha 1 is now available
• uv supports dependency groups
• dive: A tool for exploring each layer in a docker image
• pytest-metadata
• Extras
• Joke

About the show

Sponsored by us! Support our work through:

• Our courses at Talk Python Training
• The Complete pytest Course & Hello, pytest!
• Patreon Supporters

Connect with the hosts

• Michael: @[email protected]
• Brian: @[email protected]
• Show: @[email protected]

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am 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.

Michael #1: Python 3.14.0 alpha 1 is now available

• First of seven planned alpha releases.
• Many new features for Python 3.14 are still being planned and written. Among the new major new features and changes so far:
  • PEP 649: deferred evaluation of annotations
  • Improved error messages

Brian #2: uv supports dependency groups

• we covered dependency groups in episode 406
• as of 0.4.27, uv supports dependency groups
• docs show how to add dependencies with uv add --group
  • also “The --dev, --only-dev, and --no-dev flags are equivalent to --group dev, --only-group dev, and --no-group dev respectively.”
• To install a group, uv pip install --group doesn’t work yet.
  • It’s waiting for PyPA to decide on an interface for pip, and uv pip will use that interface.
• But sync works.

  $ uv init # create a pyproject.toml
  $ uv add --group foo pytest
  $ uv venv # create venv
  $ uv sync --group foo # will install all dependencies, including group "foo"
  

Michael #3: dive: A tool for exploring each layer in a docker image

• via Mike Fiedler
• Features:
  • Show Docker image contents broken down by layer
  • Indicate what's changed in each layer
  • Estimate "image efficiency"
  • Quick build/analysis cycles
  • CI Integration

Brian #4: pytest-metadata

• An incredibly useful plugin for adding, you guessed it, metadata, to your pytest results.
• Required for pytest-html but also useful on it’s own
• Adds metadata to
  • text output with --verbose
  • xml output when using --junit-xml, handy for CI systems that support junit.xml
• Other plugins depend on this and report in other ways, such as pytest-html
• By default, already grabs
  • Python version
  • Platform info
  • List of installed packages
  • List of installed pytest plugins
• You can add your own metadata
• You can access all metadata (and add to it) from tests, fixtures, and hook functions via a metadata fixture.
• This is in the Top pytest Plugins list, currently #5.

Extras

Brian:

• I’ve started filtering deprecated plugins from the pytest plugin list.
• I’m also going to start reviewing the list and pulling out interesting plugins as the topic of the next season of Test & Code.

Michael:

• Pillow 11 is out
• pip install deutschland
• Talk Python has a dedicated blog, please subscribe!

Joke: Dog names

• Open Source Pledge
• Jeff Triplet's DjangoTV
• PEP 735 – Dependency Groups in pyproject.toml
• livereload
• Extras
• Joke

About the show

Sponsored by ScoutAPM: pythonbytes.fm/scout

Connect with the hosts

• Michael: @[email protected]
• Brian: @[email protected]
• Show: @[email protected]

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am PT. Older video versions available there too.

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Brian #1: Open Source Pledge

• Learned about this because of this post
  • Why Django supports the Open Source Pledge
• Steps
  • Pay Open Source maintainers.
    • Min to participate is 2k/year/dev at your company
  • Self-report annually
    • Publish a blog post outlining your payments
• Armin’s post about launching Open Source Pledge and mixing money with open source

Michael #2: Jeff Triplet's DjangoTV

• A nice aggregation of lots of Django conference talks
• Filter by conference
• Good search as well

Brian #3: PEP 735 – Dependency Groups in pyproject.toml

• Author: Stephen Rosen, Sponsor: Brett Cannon, PEP-Delegate: Paul Moore
• Accepted. Resolotion Oct 10, 2024
• “This PEP specifies a mechanism for storing package requirements in pyproject.toml files such that they are not included in any built distribution of the project.”
• Allow us to define named groups of dependencies that can be independent of the main project.

• ex:

  [dependency-groups]
  test = ["pytest", "coverage"]
  docs = ["sphinx", "sphinx-rtd-theme"]
  typing = ["mypy", "types-requests"]
  typing-test = [{include-group = "typing"}, {include-group = "test"}, "useful-types"]
  

• “might” work like this: pip install --dependency-groups=test,typing

  • but tool venders are able to define how they use groups. Of course.
• Similar solutions
  • multiple requirements.txt files: requirements_test.txt, requirements_docs.txt, etc.
    • no standard naming convention, not standardized
  • package extras:
    • not gauranteed to be statically defined (TIL)
    • additional to main dependencies, so not independent

Michael #4: livereload

• Example from talkpython.fm: asset_bundler_watcher.py
• The docs are sparse, so see the gist above

Extras

Brian:

• Personal Blogs are no longer personal when AI gets too involved - KJayMiller
• Mind Your Image Metadata - Stefanie Molin

Michael:

• 14% of our listeners are in Germany, thanks Germany!
  • Prost!
• Hetzner comes to the US

Joke:

• A programmer’s partner asks them: “Would you go get a loaf of bread from the store? And if they have eggs, get a dozen.”
• A while later, the programmer returns with 12 loaves of bread and says “They had eggs.”
  • From https://savvyprogrammer.io/software-jokes/

• Briefer: Dashboards and notebooks in a single place
• Introduction to programming with Python
• setup-uv
• HTML for people
• Extras
• Joke

About the show

Sponsored by ScoutAPM: pythonbytes.fm/scout

Connect with the hosts

• Michael: @[email protected]
• Brian: @[email protected]
• Show: @[email protected]

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am 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.

Michael #1: Briefer: Dashboards and notebooks in a single place

• Notebooks and dashboards with Python, SQL, scheduling, native visualizations, code generation, and more.
• In Briefer, you can:
  • Create notebooks and dashboards using Markdown, Python, SQL, and native visualizations.
  • Build interactive data apps using inputs, dropdowns, and date pickers.
  • Generate code and queries using an AI that understands your database schema and your notebook's context.
  • Schedule notebooks and dashboards to run and update periodically.
  • Create and test ad-hoc pipelines using writebacks.
• Briefer vs. Traditional BI Tools: Briefer is better than traditional BI tools because it's faster and more flexible, thanks to Python.
• Briefer vs. Traditional Notebooks: In Briefer, you can run SQL queries against connected data sources directly in your notebook. Then, Briefer will automatically turn your query into a data frame and store it in a variable that you can use in your Python blocks.

Brian #2: Introduction to programming with Python

• Jose Blanca
  • “Python intro aimed at students with no prior programming experience.”
  • “Relies mainly on examples and exercises.”
  • “Does not try to cover every detail of the Python language, but just what a beginner might need to start the journey.”
  • Tech: “… built with the quarto publishing system complemented by the quarto live extension that allows Python to run in the web browser by using pyodide.”
• Runs on anything, since it doesn’t require a local install of Python
• Running 3.12.1, looks like. Although that’s a bit hidden. Seems like it should be more visible.

Michael #3: setup-uv

• Set up your GitHub Actions workflow with a specific version of uv
• Install a version of uv and add it to PATH
• Cache the installed version of uv to speed up consecutive runs on self-hosted runners
• Register problem matchers for error output
• (Optional) Persist the uv's cache in the GitHub Actions Cache
• (Optional) Verify the checksum of the downloaded uv executable

Brian #4: HTML for people

• Teaching HTML in a rather fun way.
• Includes basic CSS

Extras

Michael:

• A new article: We Must Replace uWSGI With Something Else
• Django unique email login

Joke: So much O’Really

• Python 3.13.0 released Oct 7
• PEP 759 – External Wheel Hosting
• pytest-freethreaded
• pytest-edit
• Extras
• Joke

About the show

Sponsored by ScoutAPM: pythonbytes.fm/scout

Connect with the hosts

• Michael: @[email protected]
• Brian: @[email protected]
• Show: @[email protected]

Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am 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: Python 3.13.0 released Oct 7

• That’s today!
• What’s New In Python 3.13
  • Interpreter (REPL) improvements
    • exit works (really, this is worth the release right here)
    • Multiline editing with history preservation.
      • history sticks around between sessions
    • Direct support for REPL-specific commands like help, exit, and quit, without the need to call them as functions.
    • Prompts and tracebacks with color enabled by default.
    • Interactive help browsing using F1 with a separate command history.
    • History browsing using F2 that skips output as well as the >>> and … prompts.
    • “Paste mode” with F3 that makes pasting larger blocks of code easier (press F3 again to return to the regular prompt).
    • exit now works without parens
  • Improved error messages
    • Colorful tracebacks
    • Better messages for
      • naming a script/module the same name as a stdlib module.
      • naming a script/module the same name as an installed third party module.
      • misspelling a keyword argument
  • Free threaded CPython
    • Included in official installers on Windows and macOS
      • Read these links to figure out how - it’s not turned on by default
  • Lot’s more. see the What’s new page

Michael #2: PEP 759 – External Wheel Hosting

• pypi.org ships over 66 petabytes / month backed by Fastly
• There are hard project size limits for publishers to PyPI
• We can host the essence of a .whl as a .rim file, then allow an external download URL
• Security: Several factors as described in this proposal should mitigate security concerns with externally hosted wheels, such as:
  • Wheel file checksums MUST be included in .rim files, and once uploaded cannot be changed. Since the checksum stored on PyPI is immutable and required, it is not possible to spoof an external wheel file, even if the owning organization lost control of their hosting domain.
  • Externally hosted wheels MUST be served over HTTPS.
  • In order to serve externally hosted wheels, organizations MUST be approved by the PyPI admins.

Brian #3: pytest-freethreaded

• PyCon JP 2024 Team:
  • This extension was created at PyCon JP sprints with Anthony Shaw and 7 other folks listed in credits.
• “A pytest plugin for helping verify that your tests and libraries are thread-safe with the Python 3.13 experimental freethreaded mode.”
• Testing your project for compatibility with freethreaded Python.
  • Testing in single thread doesn’t test that.
  • Neither does testing with pytest-xdist, because it uses multiprocessing to parallelize tests.
  • So, Ant and others “made this plugin to help you run your tests in a thread-pool with the GIL disabled, to help you identify if your tests are thread-safe.”
  • “And the first library we tested it on (which was marked as compatible) caused a segmentation fault in CPython! So you should give this a go if you're a package maintainer.”

Michael #4: pytest-edit

• A simple Pytest plugin for opening editor on the failed tests.
• Type pytest --edit to open the failing test code
• Be sure to set your favorite editor in the ENV variables

Extras

Michael:

• New way to explore Talk Python courses via topics
  • This has been in our mobile apps since their rewrite but finally comes to the web
• Let's go easy on PyPI, OK? essay
• Hynek’s video: uv IS the Future of Python Packaging
• djade-pre-commit
• Polyfill.io, BootCDN, Bootcss, Staticfile attack traced to 1 operator
• PurgeCSS CLI
• Python 3.12.7 released
• Incremental GC and pushing back the 3.13.0 release
• uv making the rounds
• LLM fatigue, is it real?
• Take the Python Developers Survey 2024

Joke: Funny 404 pages

• We have something at least interesting at pythonbytes.fm

• uv under discussion on Mastodon
• erdantic: Entity Relationship Diagrams
• Extra, Extra, Extra
• Django Extra, Extra, Extra
• Extras
• Joke

• Architecture Decision Records (ADRs)
• narwhals: extremely lightweight compatibility layer between dataframes
• Microsoft wants Three Mile Island to fuel its AI power needs
• zsh-in-docker
• Extras
• Joke

• “We must replace uwsgi by something else”
• Let’s build and optimize a Rust extension for Python
• Fake recruiter coding tests target devs with malicious Python packages
• Monthly PSF Board Office Hours
• Extras
• Joke

• Python 3.13.0RC2, 3.12.6, 3.11.10, 3.10.15, 3.9.20, and 3.8.20 are now available!
• Docker images using uv's python
• 10 years of sustainable open source - Read the Docs
• humanize
• Extras
• Joke

• Why I Still Use Python Virtual Environments in Docker
• Python Developer Survey Results
• Anaconda Code add-in for Microsoft Excel
• Disabling Scheduled Dependency Updates
• Extras
• Joke

• Open Source Myths
• uv 0.3.0 and all the excitement
• Top pytest Plugins
• A comparison of hosts / providers for Python serverless functions (aka Faas)
• Extras
• Joke

• pyawaitable
• Annotated area charts with plotnine
• DeltaDB
• PyCon US 2024 Recap + Videos are up
• Extras
• Joke

• uv venv --python & uv python
• Python 3.12.5 released
• Compile and use dependencies for multiple Python versions in Tox
• Catalog of Dark Patterns
• Extras
• Joke

• py-free-threading.github.io
• Python’s Supportive and Welcoming Environment is Tightly Coupled to Its Progress
• Status pages for sites!
• PEP 751 – A file format to list Python dependencies for installation reproducibility
• Extras
• Joke