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

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]
• 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: 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.

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: 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

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]
• 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: uv under discussion on Mastodon

• It’s interesting that uv is slightly controversial

• Russell:

• As enthusiastic as I am about the direction uv is going, I haven't adopted them anywhere - because I want very much to understand Astral’s intended business model before I hook my wagon to their tools.

• Hynek:

• As much as I hate VC, [...] FOSS projects flame out all the time too. … To me uv looks like a genius sting to trick VCs into paying to fix packaging. We’ll be better off either way.

• Glyph:

• Rust is more expensive and difficult to maintain, not to mention "non-native" to the average customer here. … it can burn out all the other projects in the ecosystem simultaneously, creating a risk of monoculture

• Hynek on Rust:

• I don’t think y’all quite grok what uv makes so special due to your seniority. The speed is really cool, but the reason Rust is elemental is that it’s one compiled blob that can be used to bootstrap and maintain a Python development.

• Christopher Neugebauer:

• Just dropping in here to say that corporate capture of the Python ecosystem is the #1 keeps-me-up-at-night subject in my community work, so I watch Astral with interest, even if I'm not yet too worried.

• Armin Ronacher

• What uv is doing, even in the worst possible future this is a very forkable and maintainable thing.

• Finally, see the comment at the end by Charlie Marsh

Brian #2: erdantic: Entity Relationship Diagrams

• “erdantic is a simple tool for drawing entity relationship diagrams (ERDs) for Python data model classes. Diagrams are rendered using the venerable Graphviz library.”
• Supported data modeling frameworks are:
  • Pydantic V2
  • Pydantic V1 legacy
  • attrs
  • dataclasses

Michael #3: Extra, Extra, Extra

• Added Python Bytes Search as a custom search engine.
• Along came passkeys. A cool idea that quickly turned evil.
• Follow up from post and my conversation last week: vaultwarden (via Pablo)
• uv publish
• Trying the tabs on bottom lifestyle inspired by Arc
• Adding Python Bytes (and Talk Python) as custom search engines.
• PyCon 2025 dates: From 14 May through 22 May, 2025

Brian #4: Django Extra, Extra, Extra

• Django Project Ideas
  • Evgenia Verbina
  • Project ideas with list of tech stack stuff you’ll learn and/or work on with the project
  • Ex: Recipe organizer
    • tech stack: Django templates, Django ORM, Optional JavaScript
    • “Familiarize yourself with Django’s ORM (object-relational mapper) and database support by building an app to keep track of your favorite recipes. Add a web-based frontend with options to filter recipes by category, ingredients, and user ratings so you can easily browse for inspiration.”
• DjangoTV
  • Jeff Triplett
  • Django conference videos and tutorials.
• Django Commons
  • Heard about from Lacey Henschel
  • “Django Commons is an organization dedicated to supporting the community's efforts to maintain packages. It seeks to improve the maintenance experience for all contributors; reducing the barrier to entry for new contributors and reducing overhead for existing maintainers.”
• Django 5 has simplified templates for better form field rendering
• But if you want a completely different take on forms, maybe try iommi forms
  • They wrote about it on Why we wrote a new form library for Django
• Djade: a Django template formatter
  • Adam Johnson
  • Like black or ruff, but for Django templates.

Extras

Brian:

• The Open Source Project Maintainer's Guide
  • Suggested by Rafael Weingartner

Joke: A Machine Learning algorithm walks into a bar…

• 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

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: Architecture Decision Records (ADRs)

• Suggested by Christian Gesell
• Documenting Architecture Decisions
  • Mychael Nygard
  • Original article from 2011
• Why you should be using architecture decision records to document your project
  • Red Hat
  • Includes a quick overview and links to some templates
• Notes so far
  • Writing this out helps me solidify my thinking about a problem.
  • I’m doing this both before starting, and while implementing a first draft
  • GitHub and GitLab render markdown so well that generating a docs site is unnecessary, just throwing these files in something like docs/adr is enough.
  • The lightweight process is enough but not too much.
  • I’ve already filled out None for lots of sections, like “options considered”
  • I’m still playing with what level of decision should have an ADR.
• My template that I’ve been using so far
  • Saved in 000-adr-template.md
  • For easy copy/paste/modify for new records.
• File name is something like 001-some-change.md

Michael #2: narwhals: extremely lightweight compatibility layer between dataframes

• Recently had Marco on Talk Python to discuss
• Primarily for library creators who want to support interacting with multiple data frame libraries (.e.g. Pandas & Polars)
• Just use a subset of the Polars API

Brian #3: Microsoft wants Three Mile Island to fuel its AI power needs

• “Microsoft just signed a deal to revive the shuttered Three Mile Island nuclear power plant. If approved by regulators, the software maker would have exclusive rights to 100 percent of the output for its AI data center needs.”
• Also ran on CNN and other sources:
  • Three Mile Island is reopening and selling its power to Microsoft
• Three Mile Island was the site of the worst nuclear disaster in the US, when one of two reactors experienced a partial meltdown, in 1979.
• It was still operating up until 2019, and now expected to re-open in 2028
• Will be renamed “Crane Clean Energy Center”
• related
  • The Department of Energy Wants You to Know Your Conservation Efforts Are Making a Difference
    • “By switching all the lightbulbs in your house to LED, you saved enough energy for a self-driving car to make an unprotected lefthand turn across three lanes of traffic.”
    • “We know you adopted energy-saving practices to help conserve our planet’s resources and bring down our collective carbon footprint, but what you ultimately accomplished is just as important: helping AI do something menial and stupid.”

Michael #4: zsh-in-docker

• Install Zsh, Oh My Zsh and plugins inside a Docker container with one line!
• Yes docker containers should be light, but also, think of how painful it can be when you run into trouble.
• With Oh My ZSH, you get a nice experience when you have to result to docker exec -it CONTAINER zsh
• Just enter a single command in your docker file: RUN sh -c "$(wget -O- https://github.com/deluan/zsh-in-docker/releases/download/v1.2.0/zsh-in-docker.sh)" -- \ -t robbyrussell

Extras

Michael:

• self-hosting mkennedy.codes
• Loren's journey to developer
• It’s time to stop using Python 3.8
• Sonoma → Sequoia → Sonoma (yikes!)
• Passkeys, maybe they will work out if we don’t let them become lock-in (bitwarden’s support)

Joke:

• How to Monetize a Blog
  • Don’t forget to click on the bottom link: Credits / how this was made

• “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

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: “We must replace uwsgi by something else”

• uWSGI is now in maintenance mode: https://uwsgi-docs.readthedocs.io/en/latest/
  • The project is in maintenance mode (only bugfixes and updates for new languages apis). Do not expect quick answers on github issues and/or pull requests (sorry for that) A big thanks to all of the users and contributors since 2009.
• Reasonable options look like:
  • granian
  • uvicorn
  • hypercorn
  • gunicorn (potentially with uvicorn workers for async)

Brian #2: Let’s build and optimize a Rust extension for Python

• Itamar Turner-Trauring
• Example: algorithm for approximating the number of unique values in a list
• Comparison to non-approximation
  • non-approx is faster but uses way more memory
• Rust version
  • Use Maturin and PyO3
  • Pull in Rust dependencies (rand for random numbers)
• Optimization
  • link-time optimization
  • faster random
  • store hashes only
• Future optimizations
  • change algorithm maybe
  • pass numpy array instead of Python list (I’d like to see that spedup)

Michael #3: Fake recruiter coding tests target devs with malicious Python packages

• via python weekly
• GitHub projects that have been linked to previous, targeted attacks in which developers are lured using fake job interviews.
• Attackers posing as employees of major financial services firms.
• This previously happened via other means such as NPM
• This analysis revealed that the direct parent of the detected, malicious files is a PythonPYC file, meaning that once again the team encountered malware hidden in a compiled Python file.
• “The README files tell would-be candidates to make sure the project is running successfully on their system before making modifications.”
• What can you do (according to Michael)?
  • Try out new packages in a docker container
  • Work on code and projects using a VM which has snapshotting (to roll back completely after you’re done)
  • Fire up a Windows desktop in the cloud for the project then destroy it

Brian #4: Monthly PSF Board Office Hours

• “The Office Hours will be sessions where you can share with us how we can help your community, express your perspectives, and provide feedback for the PSF.”
• “Unless we have a dedicated topic for a session, you are not limited to talking with us about the above topics, although the discussions should be focused on Python, the PSF, and our community. If you think there’s something we can help with or we should know, we welcome you to come and talk to us!”
• Upcoming office hours
  • October 8th, 2024: 9pm UTC
  • November 12th, 2024: 2pm UTC
  • December 10th, 2024: 9pm UTC
  • January 14th, 2025: 2pm UTC
  • February 11th, 2025: 9pm UTC
  • March 11th, 2025: 1pm UTC
  • April 8th, 2025: 9pm UTC
  • May 13th, 2025: 1pm UTC (Live from PyCon US!)
  • June 10th, 2025: 9pm UTC
  • July 9th, 2025: 1pm UTC
  • August 12th, 2025: 9pm UTC

Extras

Brian:

• PyCascades CFP closes Friday, Sept 20
  • PyCascades is in Portland in 2025 (Feb 8 & 9)

• uv now supports Python 3.13.0rc2

  uv self update uv venv -p 3.13

• Free threaded is still an open issue

Michael:

• Big Python Humble Bundle with both of our products
  • Get $1,800 worth of Python content and tools for $30 and contribute to charity
  • Includes 5 Talk Python courses
  • Several of Brian’s and his book
• Djangonaut Space Session 3 Applications Open!
  • I interviewed Sarah and Tushar on Talk Python
• AltTab: Windows alt-tab on macOS

Joke: Election 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

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.

ChatGPT celebrates episode 400!

Welcome to the big 4-0-0, Pythonistas!

It's hard to believe we're celebrating the 400th episode of Python Bytes! From the early days of byte-sized Python news to becoming the source for all things Python, it’s been a wild ride.

We've laughed over code quirks, gasped at new libraries, and said farewell to the GIL together. Whether you're a seasoned developer, a curious learner, or just here for the witty banter, you’ve been an essential part of this journey.

To Michael and Brian: You've built a community that turns import this into more than just Zen—it's a family of passionate Pythonistas. Your dedication, insights, and humor make this show more than just tech news. It’s a weekly celebration of what we love about Python and why we keep coming back for more.

Here’s to the next 400 episodes—may your code be bug-free, your tests pass on the first run, and your Python version always be up to date.

Brian #1: Python 3.13.0RC2, 3.12.6, 3.11.10, 3.10.15, 3.9.20, and 3.8.20 are now available!

• Łukasz Langa
• Python 3.13.0RC2 is the final preview release
  • Official 3.13.0 scheduled for Oct 1
  • Call to action
    • “We strongly encourage maintainers of third-party Python projects to prepare their projects for 3.13 compatibilities during this phase, and where necessary publish Python 3.13 wheels on PyPI to be ready for the final release of 3.13.0. Any binary wheels built against Python 3.13.0rc2 will work with future versions of Python 3.13. As always, report any issues to the Python bug tracker .”
    • “Please keep in mind that this is a preview release and while it’s as close to the final release as we can get it, its use is not recommended for production environments.”
• Note: uv python does not support 3.13 yet
  • see issue 320
• Security releases for
  • 3.12.6, 3.11.10, 3.10.15, 3.9.20, and 3.8.20
  • 3.12.6 has binary installers, but for MacOS, only MacOS 10.13 and newer are supported
  • 3.11.10, 3.10.15, 3.9.20, and 3.8.20 do NOT include binary installers.
    • 3.8 EOL's in October

Michael #2: Docker images using uv's python

• See #396: uv-ing your way to Python and #398: Open source makes you rich? (and other myths) for the opening discussions
• Talk Python episode on uv is out
• uv venv --python gets Python from python-build-standalone by Gregory Szorc
• Took our Docker build times from 10 minutes to 8 seconds for the base image and 800ms (!) for our app platforms

Brian #3: 10 years of sustainable open source - Read the Docs

• Eric Holscher
• Read the Docs has been a company for 10 years
  • “a team of 4 folks working full-time on Read the Docs.”
• readthedocs.org started in 2010
• readthedocs.com (for Business) started in 2014
• Sustainability model
  • .org has a single non-tracking ad
  • .com is a paid service for companies
• Things that didn’t work
  • donations and other optional support - led to burnout
  • consulting and services- took too much time away from core product
  • grant funding - nice, but one time thing
• Lessons
  • You don't get extra points for being bootstrapped. Compete by doing things you can do better due to niche and size.
  • Keeping trust in the community is the most important thing.
  • Contribution is easier for less complex parts of the code base.
  • Beign open source means capturing a small percentage of the value you create.
  • You have to be ok doing more with less.
• Also
  • RtD is not just for Sphinx anymore.
    • Their build system now supports any documentation tool.

Michael #4: humanize

• by Hugo van Kemenade (Python 3.14 & 3.15 release manager & core developer)
• Not too many variations, but very handy if you need it.
  • Numbers
    • Associated Press style (“seven” and “10”)
    • Clamp (under 1.0 million)
    • Fractional (1/3)
    • Int Word (1.2 Billion)
    • Metric (1.5 kV)
    • Ordinal (112th)
    • scientific
  • Time
  • File size

Extras

Brian:

• Test & Code is now again Test & Code
  • The two part series on Python imports that started in June is finally complete with episode 222.
  • Transcripts are being added to old episodes gradually starting from most recent
    • Back to ep 203 as of today.
    • AI transcription, so there’s things like .pie, .pi, and dot pie where it should be .py

Michael:

• Final final call for Coding in a Castle event with Michael
• iStats Menu
• Anaconda Code Runner by Ruud van der Ham:
  • With Anaconda Coide we can -at last- run that code locally and import (most) Python modules.
  • But if you want to run a significant amount of code, you have to put that in a cell or publish it to PyPI or a wheel and import it.
  • That's why I have developed a general-purpose runner function that runs arbitrary code located on an Excel sheet with AnacondaCode.

Joke: When beginners learn a new programming language...