Python Bytes

By Michael Kennedy and Brian Okken

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.... more

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Python Bytes episodes:

December 02, 2024#412 Closing the loop
Topics covered in this episode:
Loop targets
asyncstdlib
Bagels: TUI Expense Tracker
rloop: An AsyncIO event loop implemented in Rust
Extras
Joke
Watch on YouTube
About the show
Sponsored by us! Support our work through:
Our courses at Talk Python Training
The Complete pytest Course
Patreon Supporters
Connect with the hosts
Michael: @[email protected] / @mkennedy.codes (bsky)
Brian: @[email protected] / @brianokken.bsky.social
Show: @[email protected] / @pythonbytes.fm (bsky)
Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am PT. Older video versions available there too.
Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it.
Brian #1: Loop targets
Ned Batchelder
I don’t think I would have covered this had it not been the surprising opposition to Ned’s code.
Here’s the snippet:
params = {
"query": QUERY,
"page_size": 100,
}
*# Get page=0, page=1, page=2, ...*
**for** params["page"] in itertools.count():
data = requests.get(SEARCH_URL, params).json()
**if** not data["results"]:
**break**
...
Ned is utilizing the assignment in the for loop to use the value of count() and store it into the params["page"].
The article includes another version with a temp variable page_num, which I think the naysayers would prefer.
But frankly, I think both are fine. Why not put the value right where you want it?
Michael #2: asyncstdlib
The asyncstdlib library re-implements functions and classes of the Python standard library to make them compatible with async callables, iterables and context managers.
It is fully agnostic to async event loops and seamlessly works with asyncio, third-party libraries such as trio, as well as any custom async event loop.
Full set of async versions of advantageous standard library helpers, such as zip, map, enumerate, functools.reduce, itertools.tee, itertools.groupby and many others.
Safe handling of async iterators to ensure prompt cleanup, as well as various helpers to simplify safely using custom async iterators.
Small but powerful toolset to seamlessly integrate existing sync code into async programs and libraries.
Brian #3: Bagels: TUI Expense Tracker
Jax Tam
“Bagels expense tracker is a TUI application where you can track and analyse your money flow, with convenience oriented features and a complete interface.
Why an expense tracker in the terminal? I found it easier to build a habit and keep an accurate track of my expenses if I do it at the end of the day, instead of on the go. So why not in the terminal where it's fast, and I can keep all my data locally?”
Who hasn’t wanted to write their own expense tracker?
This implementation is fun for lots of reasons
It’s still new and pretty small, so forking it for your own uses should be easy
Built on textual is fun
install instructions based on uv tool seems to be the new normal:
uv tool install --python 3.13 bagels
test suite started
pretty useful as is, actually
Nice that it includes a roadmap of future goals
Would be a fun project to help out with for anyone looking for anyone looking for a shiny new codebase to contribute to.
Michael #4: rloop: An AsyncIO event loop implemented in Rust
An AsyncIO event loop implemented in Rust
From Giovanni Barillari, Creator of Granian
RLoop is an AsyncIO event loop implemented in Rust on top of the mio crate.
Disclaimer: This is a work in progress and definitely not ready for production usage.
Run asyncio.set_event_loop_policy(rloop.EventLoopPolicy()) and done.
Similar to uvloop.
Extras
Brian:
I’m currently listening to Four Thousand Weeks - Time Management for Mortals by Oliver Burkeman for the second time. Highly recommend.
Development Advent Calendars for 2024 - Adrian Roselli
Black Friday at PythonTest.com
Michael:
Docker cluster monitor
Compare engagement across Mastodon / Bsky / Twitter
https://bsky.app/profile/pythonbytes.fm/post/3lbseqgr5m22z
https://fosstodon.org/@pythonbytes/113545509565796190
https://x.com/pythonbytes/status/1861166179236319288
Back on #277 we talked about StrEnum. Got a nice chance to use it this weekend.
Maybe Finance
Go sponsor a bunch of projects on GitHub
Black Friday at Talk Python
Joke: CTRL + X onion
...more
26min
November 25, 2024#411 TLS Client: Hello <<guitar solo>>
Topics covered in this episode:
Talk Python rewritten in Quart
PyPI now supports digital attestations
Django Rusty Templates
PEP 639 is now supported by PYPI
Extras
Joke
Watch on YouTube
About the show
Sponsored by us! Support our work through:
Our courses at Talk Python Training
The Complete pytest Course
Patreon Supporters
Connect with the hosts
Michael: @[email protected] / @mkennedy.codes (bsky)
Brian: @[email protected] / @brianokken.bsky.social
Show: @[email protected] / @pythonbytes.fm (bsky)
Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am PT. Older video versions available there too.
Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it.
Michael #1: Talk Python rewritten in Quart
Rewrote all of talkpython.fm in Quart (10k lines of code total, 4k changed)
Considered
FastAPI
Litestar
Django
Hugo Static Site + Python
Flask
Discussed the multistage upgrade / conversion process
Automating tests for all 1,000 pages
Brian #2: PyPI now supports digital attestations
Dustin Ingram
“Attestations provide a verifiable link to an upstream source repository: By signing with the identity of the upstream source repository, such as in the case of an upload of a project built with GitHub Actions, PyPI's support for digital attestations defines a strong and verifiable association between a file on PyPI and the source repository, workflow, and even the commit hash that produced and uploaded the file. Additionally, publishing attestations to a transparency log helps mitigate against both compromise of PyPI and compromise of the projects themselves.”
For maintainers
If using GH Actions and Trusted Publishing
make sure you use pypa/gh-action-pypi-publish, version v1.11.0 or newer
that’s it
If not
“Support for automatic attestation generation and publication from other Trusted Publisher environments is planned.”
“While not recommended, maintainers can also manually generate and publish attestations.”
See also
PyPI Introduces Digital Attestations to Strengthen Python Package Security
by Sarah Gooding
Are we PEP 740 yet?
Michael #3: Django Rusty Templates
by Lily Foote
An experimental reimplementation of Django's templating language in Rust.
Goals
100% compatibility of rendered output.
Error reporting that is at least as useful as Django's errors.
Improved performance over Django's pure Python implementation.
Brian #4: PEP 639 is now supported by PYPI
from Brett Cannon
PEP 639 – Improving License Clarity with Better Package Metadata
For project metadata, use these fields: license and license-files:
Examples license field
[project]
license = "MIT"
[project]
license = "MIT AND (Apache-2.0 OR BSD-2-clause)"
[project]
license = "MIT OR GPL-2.0-or-later OR (FSFUL AND BSD-2-Clause)"
[project]
license = "LicenseRef-Proprietary"
Examples of license-files:
[project]
license-files = ["LICEN[CS]E*", "AUTHORS*"]
[project]
license-files = ["licenses/LICENSE.MIT", "licenses/LICENSE.CC0"]
[project]
license-files = ["LICENSE.txt", "licenses/*"]
[project]
license-files = []
Extras
Brian:
Playground Wisdom: Threads Beat Async/Await - interesting read from Armin Ronacher about different language abstractions around concurrency.
PythonTest.com Discord community is now live
Launched last week, as of this morning we’ve got 89 members
Anyone already a pythontest community member has received an invite
Anyone can join through courses.pythontest.com
Everything at pythontest.com is 20% off through Dec 2 with code turkeysale2024
“Python Testing with pytest” eBook 40% off through Dec 2, use code turkeysale2024
Michael:
Python 3.14.0a2 released
Starter packs:
Michael’s Python people: https://bsky.app/starter-pack/mkennedy.codes/3lbdnupl26e2x
Directory: https://blueskydirectory.com/starter-packs/all
Joke: curl - heavy metal style!
...more
41min
November 18, 2024#410 Entering the Django core
Topics covered in this episode:
Thoughts on Django’s Core
futurepool
Don't return named tuples in new APIs
Ziglang: Migrating from AWS to Self-Hosting
Extras
Joke
Watch on YouTube
About the show
Sponsored by us! Support our work through:
Our courses at Talk Python Training
The Complete pytest Course
Patreon Supporters
Connect with the hosts
Michael: @[email protected] / @mkennedy.codes (bsky)
Brian: @[email protected] / @brianokken.bsky.social
Show: @[email protected] / @pythonbytes.fm (bsky)
Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 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
...more
31min
November 14, 2024#409 We've moved to Hetzner write-up
Topics covered in this episode:
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
Watch on YouTube
About the show
Sponsored by:
ScoutAPM - Django Application Performance Monitoring
Codeium - Free AI Code Completion & Chat
Connect with the hosts
Michael: @[email protected] / @mkennedy.codes (bsky)
Brian: @[email protected] / @brianokken.bsky.social
Show: @[email protected] / @pythonbytes.fm (bsky)
Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Monday at 10am PT. Older video versions available there too.
Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it.
Michael #1: terminal-tree
An experimental filesystem navigator for the terminal, built with Textual
Tested in macOS only at this point. Chances are very high it works on Linux. Slightly lower chance (but non-zero) that it works on Windows.
Can confirm it works on Linux
Brian #2: posting: The API client that lives in your terminal
Also uses Textual
From Darren Burns
Interesting that the installation instructions recommends using uv:
uv tool install --python 3.12 posting
Very cool. Great docs. Beautiful. keyboard centric, but also usable with a mouse.
“Fly through your API workflow with an approachable yet powerful keyboard-centric interface. Run it locally or over SSH on remote machines and containers. Save your requests in a readable and version-control friendly format.”
Able to save multiple environments
Great colors
Allows scripting to run Python code before and after requests to prepare headers, set variables, etc.
Michael #3: Extra, extra, extra
spaCy course swag give-away, enter for free
New essay: Opposite of Cloud Native is?
News: We've moved to Hetzner
New package: Introducing chameleon-flask package
New release: Listmonk Python client
TIOBE Update
PEP 750 – Template Strings
Canary email
Left Omnivore, for Pocket, left Pocket for, …, landed on Instapaper
Supports direct import from Omnivore and Pocket
Though Hoarder is compelling
Trying out Zen Browser
Wasn’t a fan of Arc (especially now) but the news turned me on to Zen
Brian #4: UV does everything or enough that I'm not sure what else it needs to do
Jeff Triplett
“UV feels like one of those old infomercials where it solves everything, which is where we have landed in the Python world.”
“My favorite feature is that UV can now bootstrap a project to run on a machine that does not previously have Python installed, along with installing any packages your application might require.”
Partial list (see Jeff’s post for his complete list)
uv pip install replaces pip install
uv venv replaces python -m venv
uv run, uv tool run, and uv tool install replaces pipx
uv build - Build your Python package for pypi
uv publish - Upload your Python package to pypi, replacing twine and flit publish
Extras
Brian:
Coverage.py originally was just one file
Trying out BlueSky brianokken.bsky.social
Not because of Taylor Swift, but nice.
There are a lot of Python people there.
Joke: How programmers sleep
...more
36min
November 04, 2024#408 python-preference only-managed 3.13t
Topics covered in this episode:
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
Watch on YouTube
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
...more
32min
October 28, 2024#407 Back to the future, destination 3.14
Topics covered in this episode:
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
Watch on YouTube
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
...more
29min
October 21, 2024#406 What's on Django TV tonight?
Topics covered in this episode:
Open Source Pledge
Jeff Triplet's DjangoTV
PEP 735 – Dependency Groups in pyproject.toml
livereload
Extras
Joke
Watch on YouTube
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/
...more
25min
October 14, 2024#405 Oh Really?
Topics covered in this episode:
Briefer: Dashboards and notebooks in a single place
Introduction to programming with Python
setup-uv
HTML for people
Extras
Joke
Watch on YouTube
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
...more
23min
October 07, 2024#404 The Lost Episode
Topics covered in this episode:
Python 3.13.0 released Oct 7
PEP 759 – External Wheel Hosting
pytest-freethreaded
pytest-edit
Extras
Joke
Watch on YouTube
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
...more
32min
September 30, 2024#403 A machine learning algorithm walks into a bar…
Topics covered in this episode:
uv under discussion on Mastodon
erdantic: Entity Relationship Diagrams
Extra, Extra, Extra
Django Extra, Extra, Extra
Extras
Joke
Watch on YouTube
About the show
Sponsored by us! Support our work through:
Our courses at Talk Python Training
The Complete pytest Course
Patreon Supporters
Connect with the hosts
Michael: @[email protected]
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…
...more
26min

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