Python Bytes is a weekly podcast hosted by Michael Kennedy and Brian Okken. The show is a short discussion on the headlines and noteworthy news in the Python, developer, and data science space.
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#400 Celebrating episode 400
Topics covered in this episode: 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 Watch on YouTube About the show Sponsored by ScoutAPM: pythonbytes.fm/scout Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org 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...
#399 C will watch you in silence
Topics covered in this episode: 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 Watch on YouTube About the show Sponsored by us! Support our work through Our courses at Talk Python Training Hello, pytest! Course Patreon Supporters Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org 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: Why I Still Use Python Virtual Environments in Docker by Hynek Schlawack I was going to cover Production-ready Docker Containers with uv but decided to take this diversion instead. Spend a lot of time thinking about the secondary effects of what you do. venvs are well known and well documented. Let’s use them. Brian #2: Python Developer Survey Results “… official Python Developers Survey, conducted as a collaborative effort between the Python Software Foundation and JetBrains.” Python w/ Rust rising, but still only 7% ““The drop in HTML/CSS/JS might show that data science is increasing its share of Python.” - Paul Everitt 37% contribute to open source. Awesome. Favorite Resources: Podcasts Lots of familiar faces there. Awesome. Perhaps I shouldn’t have decided to move “Python Test” back to Test & Code Usage “Data analysis” down, but I think that’s because “data engineering” is added. Data, Web dev, ML, devops, academic, Testing is down 23% Python Versions Still some 2 out there Most folks on 3.10-3.12 Install from: mostly python.org Frameworks web: Flask, Django, Requests, FastAPI … testing: pytest, unittest, mock, doctest, tox, hypothesis, nose (2% might be the Python 2 people) Data science 77% use pandas, 72% NumPy OS: Windows still at 55% Packaging: venv up to 55% I imaging uv will be on the list next year requirements.txt 63%, pyproject.toml 32% virtual env in containers? 47% say no Michael #3: Anaconda Code add-in for Microsoft Excel Run their Python-powered projects in Excel locally with the Anaconda Code add-in Powered by PyScript, an Anaconda supported open source project that runs Python locally without install and setup Features Cells Run Independently Range to Multiple Types init.py file is static and cannot be edited, with Anaconda Code, users have the ability to access and edit imports and definitions, allowing you to write top-level functions and classes and reuse them wherever you need. A Customizable Environment Brian #4: Disabling Scheduled Dependency Updates David Lord Interesting discussion of as they happen or batching of upsates to dependencies dependencies come in requirements files GH Actions in CI workflows pre-commit hooks David was seeing 60 PRs per month when set up on monthly updates (3 ecosystems * 20 projects) new tool for updating GH actions: gha-update, allows for local updating of GH dependencies New process Run pip-compile, gha-update, and pre-commit locally. Update a project’s dependencies when actively working on the project, not just whenever a dependency updates. Note that this works fine for dev dependencies, less so for security updates from run time dependencies. But for libraries, runtime dependencies are usually not pinned. Extras Brian: Test & Code coming back this week Michael: Code in a Castle event Python Bytes badge spotting Guido’s post removed for moderation Joke: C will watch in silence
#398 Open source makes you rich? (and other myths)
Topics covered in this episode: 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 Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training pytest courses and community at PythonTest.com Patreon Supporters Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org 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 Myths Josh Bressers Mastodon post kicking off a list of open source myths Feedback and additional myths compiled to a doc Some favorites All open source developers live in Nebraska It’s all run by hippies Everything is being rewritten in rust Features are planned If the source code is available, it’s open source A project with no commits for 12 months is abandoned Many eyes make all bugs shallow Open source has worse UX Open source has better UX Open source makes you rich Michael #2: uv 0.3.0 and all the excitement Thanks to Skyler Kasko and John Hagen for the emails. Additional write up by Simon Willison Additional write up by Armin Ronacher End-to-end project management: uv run, uv lock, and uv sync Tool management: uv tool install and uv tool run (aliased to uvx) Python installation: uv python install Script execution: uv can now manage hermetic, single-file Python scripts with inline dependency metadata based on PEP 723. Brian #3: Top pytest Plugins Inspired by (and assisted by) Hugo’s Top PyPI Packages Write up for Finding the top pytest plugins BTW, pytest-check has made it to 25. Same day, Jeff Triplett throws my code into Claude 3.5 Sonnet and refactors it Thanks Jeff Triplett & Hugo for answering how to add Summary and other info Michael #4: A comparison of hosts / providers for Python serverless functions (aka Faas) Nice feature matrix of all the options, frameworks, costs, and more The WASM ones look particularly interesting to me. Extras Brian: When is the next live episode of Python Bytes? - via arewemeetingyet.com Thanks to Hugo van Kemenade Some more cool projects by Hugo Python Logos PyPI Downloads by Python version for various Python tools, in pretty colors Python Core Developers over time Michael: Code in a Castle Course event - just a couple of weeks left Ladybird: A truly independent browser “I'm also interested in your video recording setup, would be nice to have that in the extras too :D” OBS Studio Elgato Streamdeck Elgato Key light DaVinci Resolve Joke: DevOps Support Group via Blaise Hi, my name is Bob Group: Hi Bob I's been 42 days since I last ssh'd into production. Group: Applause But only 4 days since I accidentally took down the website Someone in back: Oh Bob…
#397 So many PyCon videos
Topics covered in this episode: pyawaitable Annotated area charts with plotnine DeltaDB PyCon US 2024 Recap + Videos are up 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: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: pyawaitable CPython API for asynchronous functions. by Peter Bierma It was originally designed to be directly part of CPython - you can read the scrapped PEP about it. Since this library only uses the public ABI, it's better fit outside of CPython, as a library. Brian #2: Annotated area charts with plotnine Nicola Rennie This is a marvelous, very professional looking plot, and a tutorial for how to achieve it. Uses plotline, which is “.. an implementation of a grammar of graphics in Python based on ggplot2” I actually didn’t know the gg in ggplot came from “grammar of graphics”. TIL Michael #3: DeltaDB A lightweight, comprehensive solution for managing delta tables built on polars and deltalake. Deltalake: Delta Lake is an open-source storage format that runs on top of existing data lakes. Polars: Dataframes powered by a multithreaded, vectorized query engine, written in Rust (aka fluent, rust-based pandas) See the docs. Brian #4: PyCon US 2024 Recap + Videos are up 95 countries attended total attendance of 2,991 2,551 in person 440 remote Videos available PyConUS I recommend Playlist → 2024 → view full playlist, as it’s easier to see the talk titles. I’ve got Paul Gannsle’s pytest for unittesters and Amitosh Swain’s Testing Data Pipelines queued up Extras Brian: Hello, pytest! course available as of last Friday. Now the fastest way to get started using pytest. 16 lessons (really 12 + intro, outro, code download, pytest flag cheat sheet) The whole shebang is about 90 min. (faster if you bump up the video speed. :) Michael: Cutting back on digital distractions, trying Dumb Phone for iPhone. See screenshot Code in a Castle Event Joke: The Tao of Programming: 4.3 A master was explaining the nature of Tao of to one of his novices, "The Tao is embodied in all software -- regardless of how insignificant," said the master. "Is the Tao in a hand-held calculator?" asked the novice. "It is," came the reply. "Is the Tao in a video game?" continued the novice. "It is even in a video game," said the master. "And is the Tao in the DOS for a personal computer?" The master coughed and shifted his position slightly. "The lesson is over for today," he said.
#396 uv-ing your way to Python
Topics covered in this episode: 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 Watch on YouTube About the show Sponsored by ScoutAPM: pythonbytes.fm/scout Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: uv venv --python & uv python I was reading this article Python Packaging is Great Now: uv is all you need It’s a little too “look, a silver bullet” for me, but it did point out some cool uv stuff I didn’t know about. uv venv venv --python 3.12 creates a virtual environment with Python 3.12, even if you didn’t have 3.12 installed on your system already. If it doesn’t work, try adding --python-preference managed uv python list shows all the python versions on your computer There’s quite a few “experimental features” run Run a command or script (experimental) init Create a new project (experimental) add Add dependencies to the project (experimental) remove Remove dependencies from the project (experimental) sync Update the project's environment (experimental) lock Update the project's lockfile (experimental) tree Display the project's dependency tree (experimental) tool Run and manage tools provided by Python packages (experimental) python Manage Python versions and installations (experimental) uv add --dev pytest will add pytest to your dev dependencies. uv tree rocks uv might not have “solved packaging” (or maybe it might have) but it sure is fun to watch the experimentation of different workflows. Michael #2: Python 3.12.5 released Lots of changes, see the release notes Brian #3: Compile and use dependencies for multiple Python versions in Tox Viktor Rimark Cool idea to use the {envname}, which specifies the tox environment, in the name of a requirements-dev.txt file name. Then add a requirements tox target to generate pip-compile-ed files. Now I gotta try doing all of this with uv lock Then we need everyone to mod their tools to comply with PEP 571, when/if it’s adopted (covered it last week) Michael #4: Catalog of Dark Patterns Including Bait and Switch Confirm Shaming Disguised Ads Roach Motel Fake Scarcity … Extras Brian: Recording of Hello, pytest! is done. Editing now. On track for the 19th (or before). Michael: Django 5.1 released Python 3.13.0 release candidate 1 released Joke: clownstrike ARS Technica article on DMCA for ClownStrike
#395 pythont compatible packages
Topics covered in this episode: 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 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: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: py-free-threading.github.io Track the status of compatibility for free-threaded Python See the Compatibility status tracking page for what you can use Lots of resources for getting your package tested and available for pythont Brian #2: Python’s Supportive and Welcoming Environment is Tightly Coupled to Its Progress “Python is as popular as it is today because we have gone above and beyond to make this a welcoming community. Being a friendly and supportive community is part of how we are perceived by the wider world and is integral to the wide popularity of Python. We won a “Wonderfully Welcoming Award” last year at GitHub Universe. Over and over again, the tech press refers to Python as a supportive community.” Some communication recently, with the recent bylaws change, didn’t live up to our promise to be welcoming Please read the article for more details. Another quote: “We have a moral imperative – as one of the very best places to bring new people into tech and into open source – to keep being good at welcoming new people. If we do not rise and continue to rise every day to this task, then we are not fulfilling our own mission, “to support and facilitate the growth of a diverse and international community of Python programmers.” Technical skills are a game-changer for the people who acquire them and joining a vast global network of people with similar interests opens many doors. Behavior that contributes to a hostile environment around Python or throws up barriers and obstacles to those who would join the Python community must be addressed because it endangers what we have built here.” Michael #3: Status pages for sites! Based on Uptime Kuma I covered last week Python Bytes status Talk Python status Brian #4: PEP 751 – A file format to list Python dependencies for installation reproducibility Brett Cannon Motivation Currently, no standard exists to: Specify what top-level dependencies should be installed into a Python environment. Create an immutable record, such as a lock file, of which dependencies were installed. Considering there are at least five well-known solutions to this problem in the community (pip freeze, pip-tools, uv, Poetry, and PDM), there seems to be an appetite for lock files in general. Rationale The format is designed so that a locker which produces the lock file and an installer which consumes the lock file can be separate tools. … The file format is designed to be human-readable. …Finally, the format is designed so that viewing a diff of the file is easy by centralizing relevant details. The file format is also designed to not require a resolver at install time. … Extras Brian: Hello, pytest! course is going well, and is purchasable as in pre-release mode. Planning on Aug 19 (or before) deadline. Not sure what the final price will be, but I’m starting with $10. I want people to want to watch it even just so see if they want to recommend to co-workers so the people around them can ramp up on pytest quickly. Michael: Mypy 1.11 Released FastHTML (more next week) Coming up on the final chance to be part of the Code in a Castle event. Joke: Open source OpenAI?
#394 Python is easy now?
Topics covered in this episode: Python is easy now Trying out free-threaded Python on macOS Module itertools overview uptime-kuma Extras Joke Watch on YouTube About the show Sponsored by ScoutAPM: pythonbytes.fm/scout Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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 is easy now or Postmodern Python or Beyond Hypermodern Chris Ardene Mostly a cool review of using rye for setup linting typing testing documentation CI/CD Also a nice discussion of how to deal with a Monorepo for Python projects Michael #2: Trying out free-threaded Python on macOS via pycoders How to install free threaded Python the easy way Testing the CPU bound work speed ups for FT Python Brian #3: Module itertools overview Rodrigo 20 tools that every Python developer should be aware of. In 5 categories Reshaping Filtering Combinatorial Infinite Iterators that complement other tools Things I forgot about chain pairwise zip_longest tee Michael #4: uptime-kuma A fancy self-hosted monitoring tool Features Monitoring uptime for HTTP(s) / TCP / HTTP(s) Keyword / HTTP(s) Json Query / Ping / DNS Record / Push / Steam Game Server / Docker Containers Fancy, Reactive, Fast UI/UX Notifications via Telegram, Discord, Gotify, Slack, Pushover, Email (SMTP), and 90+ notification services, click here for the full list 20-second intervals Multi Languages Multiple status pages Map status pages to specific domains Ping chart Certificate info Proxy support 2FA support Extras Brian: Still working on a new pytest course. Hoping to get it released soon-ish. Michael: Open source Switzerland spyoungtech/FreeSimpleGUI — actively maintained fork of the last release of PySimpleGUI Joke: Java vs. JavaScript
#393 Dare enter the Bash dungeon?
Topics covered in this episode: Marimo: “Future of Notebooks” pytest 8.3.0 & 8.3.1 are out Python Language Summit 2024 bash-dungeon 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: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: Marimo: “Future of Notebooks” via Matt Wilkie An open-source reactive notebook for Python Run one cell and marimo reacts by automatically running affected cells, eliminating the error-prone chore of managing notebook state. Marimo's reactive UI elements, like dataframe GUIs and plots, make working with data feel refreshingly fast, futuristic, and intuitive. Rapidly experiment with code and models Bind UI elements to Python values Pick-up-and-play design, with depth for power users See the FAQ Brian #2: pytest 8.3.0 & 8.3.1 are out Real excited to get --xfail-tb flag added This detaches xfail tracebacks from -rx/-ra (which was how it was pre-8.0) Keyword matching for marker expressions, that’s fun. pytest -v -m "device(serial='123')" --no-fold-skipped allows for explit reporting of names of skipped tests Plus many more improvements, bug fixes, and doc improvements Michael #3: Python Language Summit 2024 Should Python adopt Calendar Versioning?: talk by Hugo van Kemenade Python's security model after the xz-utils backdoor: talk by Pablo Galindo Salgado Native Interface and Limited C API: talks by Petr Viktorin and Victor Stinner Free-threading ecosystems: talk by Daniele Parmeggiani Python on Mobile: talk by Malcolm Smith PyREPL -- New default REPL written in Python: talk by Pablo Galindo Salgado, Łukasz Langa, and Lysandros Nikolaou Should we make pdb better?: talk by Tian Gao Limiting yield in async generators: talk by Zac Hatfield-Dodds Annotations as Transforms: talk by Jason R. Coombs Lightning Talks, featuring talks by Petr Viktorin, David Hewitt, Emily Morehouse, Łukasz Langa, Pablo Galindo Salgado, and Yury Selivanov Brian #4: bash-dungeon “This game is intended to teach new users how to use their shell in a fun and interactive way.” Just clone the repo and start exploring with cd, ls, and cat. First moves cd bash-dungeon ls cd Enter ls cat parchment A fun way to learn some commands you might need and/or might have forgotten about. Extras Brian: Python 3.12.0b4, final beta, is out If hanging out on discuss.python.org, please checkout Community Guidelines And if it’s still not clear why we need these, check out Inclusive communications expectations in Python spaces Google Chrome news Michael: PySimpleGUI goes commercial with obfuscated “source open”? Still have seats for Code in a Castle event Reactive Dashboards with Shiny for Python free course Joke: 40 Million in in Series A Funding - may be a lot of reading, but I found it funny Thanks to VM Brasseur for sharing this one. Also a few from pyjokes 0.7.2 (first new version since 2019) If at first you don't succeed, call it version 1.0. A product manager walks into a bar, asks for drink. Bartender says no, but will consider adding later. Triumphantly, Beth removed Python 2.7 from her server in 2030. 'Finally!' she said with glee, only to see the announcement for Python 4.4.1 Although, if CalVer, PEP 2026, happens, that’ll just be Python 3.30.0.
#392 The votes have been counted
Topics covered in this episode: 2024 PSF Board Election & Proposed Bylaw Change Results SATYRN: A modern Jupyter client for Mac Incident Report: Leaked GitHub Personal Access Token Extra extra extra Extras Joke Watch on YouTube About the show Sponsored by Code Comments, an original podcast from RedHat: pythonbytes.fm/code-comments Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: 2024 PSF Board Election & Proposed Bylaw Change Results New board members Tania Allard KwonHan Bae Cristián Maureira-Fredes Congrats to new board members If you want to consider becoming a board member, there are 4 seats up for vote next year. All 3 bylaw changes passed, by a wide margin. Details of changes Change 1: Merging Contributing and Managing member classes Change 2: Simplifying the voter affirmation process by treating past voting activity as intent to continue voting Change 3: Allow for removal of Fellows by a Board vote in response to Code of Conduct violations, removing the need for a vote of the membership Michael #2: SATYRN: A modern Jupyter client for Mac A Jupyter client app for macOS Comes with a command palette LLM assistance (local or cloud?) Built in Black formatter Currently in alpha Business model unknown Brian #3: Incident Report: Leaked GitHub Personal Access Token Suggested by Galen Swint See also JFrog blog: Binary secret scanning helped us prevent (what might have been) the worst supply chain attack you can imagine A GitHub access token found it’s way into a .pyc file, then into a docker image. JFrog found it through some regular scans. JFrog notified PYPI security. Token was destroyed within 17 minutes. (nice turnaround) Followup scan revealed that no harm was done. Takaways (from Ee Durbin): Set aggressive expiration dates for API tokens (If you need them at all) Treat .pyc files as if they were source code Perform builds on automated systems from clean source only. Michael #4: Extra extra extra Python 3.13.0 beta 3 released Ice got a lot better I Will Piledrive You If You Say AI Again | Prime Reacts Video Follow up actions for polyfill supply chain attack Developer Ecosystem Survey 2024 Code in a Castle still has seats open Extras Brian: A new pytest course in the works Quick course focusing on core pytest features + some strategy and Design for Testability concepts Idea everyone on the team (including managers) can take the new course. 1-2 people on a team take “The Complete pytest Course” to become the teams local pytest experts. Python People is on an indefinite hold Python Test → back to Test & Code (probably) I’m planning a series (maybe a season) on TDD which will be language agnostic. Plus I still have tons of Test & Code stickers and no Python Test stickers. New episodes planned for August Joke: I need my intellisense (autocomplete)
#391 A weak episode
Topics covered in this episode: Vendorize packages from PyPI A Guide to Python's Weak References Using weakref Module Making Time Speak How Should You Test Your Machine Learning Project? A Beginner’s Guide Extras Joke Watch on YouTube About the show Sponsored by Code Comments, an original podcast from RedHat: pythonbytes.fm/code-comments Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: Vendorize packages from PyPI Allows pure-Python dependencies to be vendorized: that is, the Python source of the dependency is copied into your own package. Best used for small, pure-Python dependencies Brian #2: A Guide to Python's Weak References Using weakref Module Martin Heinz Very cool discussion of weakref Quick garbage collection intro, and how references and weak references are used. Using weak references to build data structures. Example of two kinds of trees Implementing the Observer pattern How logging and OrderedDict use weak references Michael #3: Making Time Speak by Prayson, a former guest and friend of the show Translating time into human-friendly spoken expressions Example: clock("11:15") # 'quarter past eleven' Features Convert time into spoken expressions in various languages. Easy-to-use API with a simple and intuitive design. Pure Python implementation with no external dependencies. Extensible architecture for adding support for additional languages using the plugin design pattern. Brian #4: How Should You Test Your Machine Learning Project? A Beginner’s Guide François Porcher Using pytest and pytest-cov for testing machine learning projects Lots of pieces can and should be tested just as normal functions. Example of testing a clean_text(text: str) -> str function Test larger chunks with canned input and expected output. Example test_tokenize_text() Using fixtures for larger reusable components in testing Example fixture: bert_tokenizer() with pretrained data Checking coverage Extras Michael: Twilio Authy Hack Google Authenticator is the only option? Really? Bitwarden to the rescue Requires (?) an update to their app, whose release notes (v26.1.0) only say “Bug fixes” Introducing Docs in Proton Drive This is what I called on Mozilla to do in “Unsolicited Advice for Mozilla and Firefox” But Proton got there first Early bird ending for Code in a Castle course Joke: I Lied
#390 Coding in a Castle
Topics covered in this episode: Joining Strings in Python: A "Huh" Moment 10 hard-to-swallow truths they won't tell you about software engineer job My thoughts on Python in Excel Extra, extra, extra Extras Joke Watch on YouTube About the show Sponsored by ScoutAPM: pythonbytes.fm/scout Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: Joining Strings in Python: A "Huh" Moment Veronica Berglyd Olsen Standard solution to “read lines from a file, do some filtering, create a multiline string”: f = open("input_file.txt") filtered_text = "\n".join(x for x in f if not x.startswith("#")) This uses a generator, file reading, and passes the generator to join. Another approach is to add brackets and pass that generator to a list comprehension: f = open("input_file.txt") filtered_text = "\n".join([x for x in f if not x.startswith("#")]) At first glance, this seems to just be extra typing, but it’s actually faster by 16% on CPython due to the implementation of .join() doing 2 passes on input if passed a generator. From Trey Hunner: “I do know that it’s not possible to do 2 passes over a generator (since it’d be exhausted after the first pass) so from my understanding, the generator version requires an extra step of storing all the items in a list first.” Michael #2: 10 hard-to-swallow truths they won't tell you about software engineer job College will not prepare you for the job You will rarely get greenfield projects Nobody gives a BLANK about your clean code You will sometimes work with incompetent people Get used to being in meetings for hours They will ask you for estimates a lot of times Bugs will be your arch-enemy for life Uncertainty will be your toxic friend It will be almost impossible to disconnect from your job You will profit more from good soft skills than from good technical skills Brian #3: My thoughts on Python in Excel Felix Zumstein Interesting take on one person’s experience with trying Python in Excel. “We wanted an alternative to VBA, but got an alternative to the Excel formula language” “Python runs in the cloud on Azure Container Instances and not inside Excel.” “DataFrames are great, but so are NumPy arrays and lists.” … lots of other interesting takaways. Michael #4: Extra, extra, extra Code in a castle - Michael’s Python Zero to Hero course in Tuscany Polyfill.io JavaScript supply chain attack impacts over 100K sites Now required reading: Reasons to avoid Javascript CDNs Mac users served info-stealer malware through Google ads HTMX for the win! ssh to run remote commands > ssh user@server "command_to_run --arg1 --arg2" Extras Brian: A fun reaction to AI - I will not be showing the link on our live stream, due to colorful language. Michael: Coding in a Castle Developer Education Event Polyfill.io JavaScript supply chain attack impacts over 100K sites See Reasons to avoid Javascript CDNs Joke: HTML Hacker
#389 More OOP for Python?
Topics covered in this episode: Solara UI Framework Coverage at a crossroads “Virtual” methods in Python classes Extras Joke Watch on YouTube About the show Sponsored by ScoutAPM: pythonbytes.fm/scout Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: Solara UI Framework via Florian A Pure Python, React-style Framework for Scaling Your Jupyter and Web Apps Solara lets you build web apps from pure Python using ipywidgets or a React-like API on top of ipywidgets. These apps work both inside the Jupyter Notebook and as standalone web apps with frameworks like FastAPI. See the Examples page. Based on Reacton By building on top of ipywidgets, Solara automatically leverage an existing ecosystem of widgets and run on many platforms, including JupyterLab, Jupyter Notebook, Voilà, Google Colab, DataBricks, JetBrains Datalore, and more. Brian #2: Coverage at a crossroads Ned Batchelder is working on making coverage.py faster. Includes a nice, quick explanation of roughly how coverage.py works with trace function and arcs used for branch coverage. And how trace slows things down for lines we know are already covered. There are cool ideas from SlipCover that could be applicable. There’s also sys.monitoring from Python 3.12 that helps with line coverage, since you can disable it for lines you already have info on. It doesn’t quite complete the picture for branch coverage, though. Summary: jump in and help if you can read it anyway for a great mental model of how coverage.py works. Michael #3: “Virtual” methods in Python classes via Brian Skinn PEP 698 just got accepted, defining an @override decorator for type hinting, to help avoid errors in subclasses that override methods. Only affects type checkers but allows you to declare a “link” between the base method and derived class method with the intent of overriding it using OOP. If there is a mismatch, it’s an error. Python 3.12’s documentation Makes Python a bit more like C# and other more formal languages Brian #4: Parsing Python ASTs 20x Faster with Rust Evan Doyle Tach is “a CLI tool that lets you define and enforce import boundaries between Python modules in your project.” we covered it in episode 384 When used to analyze Sentry’s ~3k Python file codebase, it took about 10 seconds. Profiling analysis using py-spy and speedscope pointed to a function that spends about 2/3 of the time parsing the AST, and about 1/3 traversing it. That portion was then rewritten in Rust, resulting in 10x speedup, ending in about 1 second. This is a cool example of not just throwing Rust at a speed problem right away, but doing the profiling homework first, and focusing the Rust rewrite on the bottleneck. Extras Brian: I brought up pkgutil.resolve_name() last week on episode 388 Brett Cannon says don’t use that, it’s deprecated Thanks astroboy for letting me know Will we get CalVer for Python? it was talked about at the language summit There’s also pep 2026, in draft, with a nice nod in the number of when it might happen. 3.13 already in the works for 2024 3.14 slated for 2025, and we gotta have a pi release So the earliest is then 2026, with maybe a 3.26 version ? Saying thanks to open source maintainers Great write-up by Brett Cannon about how to show your appreciation for OSS maintainers. Be nice Be an advocate Produce your own open source Say thanks Fiscal support On topic Thanks Brett for pyproject.toml. I love it. Michael: The Shiny for Python course is out! Plus, it’s free so come and get it. Joke: Tao of Programming: Book 1: Into the Silent Void, Part 1
#388 Don't delete all the repos
Topics covered in this episode: PSF Elections coming up Cloud engineer gets 2 years for wiping ex-employer’s code repos Python: Import by string with pkgutil.resolve_name() DuckDB goes 1.0 Extras Joke Watch on YouTube About the show Sponsored by ScoutAPM: pythonbytes.fm/scout Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: PSF Elections coming up This is elections for the PSF Board and for 3 bylaw changes. To vote in the PSF election, you need to be a Supporting, Managing, Contributing, or Fellow member of the PSF, … And affirm your voting status by June 25. See Affirm your PSF Membership Voting Status for more details. Timeline Board Nominations open: Tuesday, June 11th, 2:00 pm UTC Board Nominations close: Tuesday, June 25th, 2:00 pm UTC Voter application cut-off date: Tuesday, June 25th, 2:00 pm UTC same date is also for voter affirmation. Announce candidates: Thursday, June 27th Voting start date: Tuesday, July 2nd, 2:00 pm UTC Voting end date: Tuesday, July 16th, 2:00 pm UTC See also Thinking about running for the Python Software Foundation Board of Directors? Let’s talk! There’s still one upcoming office hours session on June 18th, 12 PM UTC And For your consideration: Proposed bylaws changes to improve our membership experience 3 proposed bylaws changes Michael #2: Cloud engineer gets 2 years for wiping ex-employer’s code repos Miklos Daniel Brody, a cloud engineer, was sentenced to two years in prison and a restitution of $529,000 for wiping the code repositories of his former employer in retaliation for being fired. The court documents state that Brody's employment was terminated after he violated company policies by connecting a USB drive. Brian #3: Python: Import by string with pkgutil.resolve_name() Adam Johnson You can use pkgutil.resolve_name("[HTML_REMOVED]:[HTML_REMOVED]")to import classes, functions or modules using strings. You can also use importlib.import_module("[HTML_REMOVED]") Both of these techniques are so that you have an object imported, but the end thing isn’t imported into the local namespace. Michael #4: DuckDB goes 1.0 via Alex Monahan The cloud hosted product @MotherDuck also opened up General Availability Codenamed "Snow Duck" The core theme of the 1.0.0 release is stability. Extras Brian: Sending us topics. Please send before Tuesday. But any time is welcome. NumPy 2.0 htmx 2.0.0 Michael: Get 6 months of PyCharm Pro for free. Just take a course (even a free one) at Talk Python Training. Then visit your account page > details tab and have fun. Coming soon at Talk Python: Shiny for Python Joke: .gitignore thoughts won't let me sleep
#387 Heralding in a new era of database queries
Topics covered in this episode: Dataherald Python's many command-line utilities Distroless Python functools.cache, cachetools, and cachebox Extras Joke Watch on YouTube About the show Sponsored by ScoutAPM: pythonbytes.fm/scout Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: Dataherald Interact with your SQL database, Natural Language to SQL using LLMs. Allows you to set up an API from your database that can answer questions in plain English Uses include Allow business users to get insights from the data warehouse without going through a data analyst Enable Q+A from your production DBs inside your SaaS application Create a ChatGPT plug-in from your proprietary data Brian #2: Python's many command-line utilities Trey Hunner Too many to list, but here’s some fun ones json.tool - nicely format json data calendar - print the calendar current by default, but you can pass in year and month gzip, ftplib, tarfile, and other unixy things handy on Windows cProfile & pstats Michael #3: Distroless Python via Patrick Smyth What is distroless anyway? These are container images without package managers or shells included. Debugging these images presents some wrinkles (can't just exec into a shell inside the image), but they're a lot more secure. Chainguard, creates low/no CVE distroless images based on our FOSS distroless OS, Wolfi. Some Python use-cases: docker run -it cgr.dev/chainguard/python:latest # The entrypoint is a Python REPL, since no b/a/sh is included docker run -it cgr.dev/chainguard/python:latest-dev # This is their dev version and has pip, bash, apk, etc. Brian #4: functools.cache, cachetools, and cachebox functools cache and lru_cache - built in cachetools - “This module provides various memoizing collections and decorators, including variants of the Python Standard Library's @lru_cache function decorator.” cachebox - “The fastest caching Python library written in Rust” Extras Brian: Python 3.12.4 is out VSCode has some pytest improvements Michael: Time for a bartender alternative, I’ve switched to Ice. Rocket.chat as an alternative to Slack Joke: CSS Cartoons
#386 Major releases abound
Topics covered in this episode: NumPy 2.0 release date is June 16 Uvicorn adds multiprocess workers pixi JupyterLab 4.2 and Notebook 7.2 are available Extras Joke Watch on YouTube About the show Sponsored by Mailtrap: pythonbytes.fm/mailtrap Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays 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: NumPy 2.0 release date is June 16 “This release has been over a year in the making, and is the first major release since 2006. Importantly, in addition to many new features and performance improvement, it contains breaking changes to the ABI as well as the Python and C APIs. It is likely that downstream packages and end user code needs to be adapted - if you can, please verify whether your code works with NumPy 2.0.0rc2.” NumPy 2.0.0 Release Notes NumPy 2.0 migration guide including “try just running ruff check path/to/code/ --select NPY201” “Many of the changes covered in the 2.0 release notes and in this migration guide can be automatically adapted in downstream code with a dedicated Ruff rule, namely rule NPY201.” Michael #2: Uvicorn adds multiprocess workers via John Hagen The goal was to no longer need to suggest that people use Gunicorn on top of uvicorn. Uvicorn can now in a sense "do it all” Steps to use it and background on how it works. Brian #3: pixi Suggested by Vic Kelson “pixi is a cross-platform, multi-language package manager and workflow tool built on the foundation of the conda ecosystem.” Tutorial: Doing Python development with Pixi Some quotes from Vic: “Pixi is a project manager, written in Rust, that allows you to build Python projects without having Python previously installed. It’s installable with Homebrew (brew install pixi on Linux and MacOS). There’s support in VSCode and PyCharm via plugins. By default, pixi fetches packages from conda-forge, so you get the scientific stack in a pretty reliable and performant build. If a package isn’t on conda-forge, it’ll look on PyPI, or I believe you can force it to look on PyPI if you like.” “So far, it works GREAT for me. What really impressed me is that I got a Jupyter environment with CuPy utilizing my aging Nvidia GPU on the FIRST TRY.” Michael #4: JupyterLab 4.2 and Notebook 7.2 are available JupyterLab 4.2.0 has been released! This new minor release of JupyterLab includes 3 new features, 20 enhancements, 33 bug fixes and 29 maintenance tasks. Jupyter Notebook 7.2.0 has also been released Highlights include Easier Workspaces Management with GUI Recently opened/closed files Full notebook windowing mode by default (renders only the cells visible in the window, leading to improved performance) Improved Shortcuts Editor Dark High Contrast Theme Extras Brian: Help test Python 3.13! Help us test free-threaded Python without the GIL both from Hugo van Kemenade Python Test 221: How to get pytest to import your code under test is out Michael: Bend follow up from Bernát Gábor “Bend looks roughly like Python but is nowhere there actually. For example it has no for loops, instead you're meant to use bend keyword (hence the language name) to expand calculations and another keyword to join branches. So basically think of something that resembles Python at high level, but without being compatible with that and without any of the standard library or packages the Python language provides. That being said does an impressive job at parallelization, but essentially it's a brand new language with new syntax and paradigms that you will have to learn, it just shares at first look similarities with Python the most.” Joke: Do-while