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:

March 03, 2025#422 You need 4 spaces
Topics covered in this episode:
My 2025 uv-based Python Project Layout for Production Apps
aiolimiter
A peek into a possible future of Python in the browser
Reloadium
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: My 2025 uv-based Python Project Layout for Production Apps
Hynek Schlawack
Discusses uv, a simple pyproject.toml, a simple project layout, and uv.lock as the modern way to ditch requirements.txt files
This is the starting video in a series, but it’s already very worthwhile
Michael #2: aiolimiter
An efficient implementation of a rate limiter for asyncio.
This project implements the Leaky bucket algorithm, giving you precise control over the rate a code section can be entered.
Brian #3: A peek into a possible future of Python in the browser
a.k.a “Secret SPy Stuff”
Łukasz Langa
A peek at SPy, a new language for Python on the web.
Michael #4: Reloadium
Hot Reloading and Profiling for Python
If you are a PyCharm user please check out Reloadium plugin
See also: github.com/mikeckennedy/server-hot-reload
Extras
Brian:
Making an alternate version of The Complete pytest Course
Michael:
Book: Zero Day: A Jeff Aiken Novel
Warp terminal on Windows is out.
PyCon Ed Summit announced.
Joke: py programmer walks into a bar
...more
33min
February 24, 2025#421 22 years old
Topics covered in this episode:
httpdbg
PyPI Now Supports iOS and Android Wheels for Mobile Python Development
Arcade Game Platform goes 3.0
PEP 765 – Disallow return/break/continue that exit a finally block
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: httpdbg
A tool for Python developers to easily debug the HTTP(S) client requests in a Python program.
To use it, execute your program using the pyhttpdbg command instead of python and that's it. Open a browser to http://localhost:4909 to view the requests
Brian #2: PyPI Now Supports iOS and Android Wheels for Mobile Python Development
Sara Gooding
“the Python Packaging Index (PyPI) has officially begun accepting and distributing pre-compiled binary packages, known as "wheels," for both iOS and Android platforms. “
Next up, “cibuildwheel Updates Are in Progress to Simplify iOS and Android Wheel Creation”
Michael #3: Arcade Game Platform goes 3.0
via Maic Siemering
This is our first major release since 2022.
It keeps the beginner-friendly API while adding power and efficiency.
Arcade now supports both standard OpenGL and ShaderToy (www.shadertoy.com) a-shaders through a compatibility layer.
Since 3.0 is a major release, the full list of changes is over in
github.com/pythonarcade/arcade/blob/development/CHANGELOG.md
Brian #4: PEP 765 – Disallow return/break/continue that exit a finally block
Accepted for Python 3.14
I wouldn’t have thought to do this anyway, but it’s weird, so don’t.
Will become a SyntaxWarning catchable by running with -We
Extras
Brian:
Correction: Niki Tonsky was originator of “Pride Versioning”. Thanks Nikita
Correction: Scheme is actually awesome. Brian is just a curmudgeon
Also: pytest-rerunfailures is good for exposing flaky tests
And apparently me being wrong was a great to get at least one person to blog more.
Cheers Filip Łajszczak
Michael:
Tea pot follow up
While you're right that some software actually had this implemented, Python does not. It's not an officially accepted HTTP status code, it was proposed in a 'joke' RFC. I guess Python - even though its name comes from the funny TV series Monty Python - is not so funny. httpx, your (or at least -my-) favorite HTTP module for python, does have the I_AM_A_TEAPOT constant.
By the way, there are some HTTP status codes that changed their names in RFC 9110, for instance, http.HTTPStatus.UNPROCESSABLE_CONTENT (422, previously UNPROCESSABLE_ENTITY)
Pride follow up fosstodon.org/@kytta/114034442981727301
Time to upgrade your mini?
Joke: How old is she?
...more
23min
February 17, 2025#420 90% Done in 50% of the Available Time
Topics covered in this episode:
PEP 772 – Packaging governance process
Official Django MongoDB Backend Now Available in Public Preview
Developer Philosophy
Python 3.13.2 released
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: PEP 772 – Packaging governance process
draft, created 21-Jan, by Barry Warsaw, Deb Nicholson, Pradyun Gedam
“As Python packaging has matured, several interrelated problems with the current way of managing the technical development, decision making and processes have become apparent.”
“This PEP proposes a Python Packaging Council with broad authority over packaging standards, tools, and implementations. Like the Python Steering Council, the Packaging Council seeks to exercise this authority as rarely as possible; instead, they use this power to establish standard processes.”
PEP discusses
PyPA, Packaging-WG, Interoperability Standards, Python Steering Council, and Expectations of an elected Packaging Council
A specification with
Composition: 5 people
Mandate, Responsibilities, Delegations, Process, Terms, etc.
Michael #2: Official Django MongoDB Backend Now Available in Public Preview
Over the last few years, Django developers have increasingly used MongoDB, presenting an opportunity for an official MongoDB-built Python package to make integrating both technologies as painless as possible.
Features
The ability to use Django models with confidence. Developers can use Django models to represent MongoDB documents, with support for Django forms, validations, and authentication.
Django admin support. The package allows users to fire up the Django admin page as they normally would, with full support for migrations and database schema history.
Native connecting from settings.py. Just as with any other database provider, developers can customize the database engine in settings.py to get MongoDB up and running.
MongoDB-specific querying optimizations. Field lookups have been replaced with aggregation calls (aggregation stages and aggregate operators), JOIN operations are represented through $lookup, and it’s possible to build indexes right from Python.
Limited advanced functionality. While still in development, the package already has support for time series, projections, and XOR operations.
Aggregation pipeline support. Raw querying allows aggregation pipeline operators. Since aggregation is a superset of what traditional MongoDB Query API methods provide, it gives developers more functionality.
Brian #3: Developer Philosophy
by qntm
Intended as “advice for junior developers about personal dev philosophy”, I think these are just great tips to keep in mind.
The items
Avoid, at all costs, arriving at a scenario where the ground-up rewrite starts to look attractive
This is less about “don’t do rewrites”, but about noticing the warning signs ahead of time.
Aim to be 90% done in 50% of the available time
Great quote: “The first 90% of the job takes 90% of the time. The last 10% of the job takes the other 90% of the time.”
Automate good practices
Think about pathological data
“Nobody cares about the golden path. Edge cases are our entire job.”
Brian’s note: But also think about the happy path. Documenting and testing what you think of as the happy path is a testing start and helps others understand your idea of how things are supposed to work.
There’s usually a simpler way to write it
Write code to be testable
It is insufficient for code to be provably correct; it should be obviously, visibly, trivially correct
Brian’s note: Even if it’s obviously, visibly, trivially correct, it will still break. So test it anyway.
Michael #4: Python 3.13.2 released
Python 3.13’s second maintenance release.
About 250 changes went into this update
Also Python 3.12.9, Python 3.12’s ninth maintenance release already. Just 180 changes for 3.12, but it’s still worth upgrading.
For us, it’s simply rebuilding our Docker base (i.e. —no-cache) with these lines:
RUN curl -LsSf https://astral.sh/uv/install.sh | sh
RUN --mount=type=cache,target=/root/.cache uv venv --python 3.13 /venv
Extras
Brian:
Still thinking about pytest plugins a lot.
The top pytest plugin list
Has been updated for Feb
Is starting to include things without “pytest” in the name, like Hypothesis and Syrupy.
Eventually I’ll have to add “looking at trove classifiers” as part of the search, but for now, let me know if you’re favorite is missing.
Includes T&C podcast episode links if I’ve covered it on the show.
There’s 2 so far
Michael:
There's a new release of PyScript out. All the details are here: Highlight is new PyGame-CE support. Go play!
PEP 2026 – Calendar versioning for Python rejected. :(
PEP 759 – External Wheel Hosting withdrawn
Joke:
Pride Versioning
...more
28min
February 04, 2025#419 Is your back end popular?
Topics covered in this episode:
content-types package for better MIME types/Content-Type
Wagtail 6.4
Build It Yourself
Build backend popularity over time
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: content-types package for better MIME types/Content-Type
It started with this comment from Raf.
mimetypes — Map filenames to MIME types
It is oddly missing very common types and varies by platform, OS install and other factors (see this function).
Search around and found python-magic. Seems great but
ImportError: failed to find libmagic. Check your installation → brew install libmagic
magic.from_file("testdata/test.pdf") → FileNotFoundError: [Errno 2] No such file or directory: 'testdata/test.pdf'
hmm
So I had to create my own. Introducing content-types
A Python library to map file extensions to MIME types.
Unlike other libraries, this one does not try to access the file or parse the bytes of the file or stream. It just looks at the extension.
Better support than mimetypes builtin.
Brian #2: Wagtail 6.4
Release notes
Lots of great updates, but I want to zoom in on background tasks.
6.4 includes django-tasks
which is an available implementation of DEP 0014: Background workers
This proposal is accepted and this thread includes a great talk from DjangoCon Europe 2024
Why is this cool?
Even though django-tasks says it’s “under active development”, as long as you pin the version and test your behavior depending on this, it must be ready to use if wagtail is going for it. Don't you think?
Michael #3: Build It Yourself
from Armin Ronacher, sent in by Rafael Weingartner
An excellent article pushing back on too many dependencies
Maybe the advice of always prefer code reuse isn’t that great after all?
It’s much much easier to solve small little problems these days due to AI.
Take Postmark as an example.
“It's time to have a new perspective: we should give kudos to engineers who write a small function themselves instead of hooking in a transitive web of crates. We should be suspicious of big crate graphs. Celebrated are the minimal dependencies, the humble function that just quietly does the job, the code that doesn't need to be touched for years because it was done right once.” - Armin
Brian #4: Build backend popularity over time
Bastian Venthur
This is just for projects using pyproject.toml
Apparently he did this last year as well, so we can see some trends.
Results
setuptools: ~50% (last year ~50%)
poetry: ~30% (last year ~33%)
hatchling: (percent not listed, but looks like 12-15%), (last year 10%)
flit: ~5% (last year ~10%)
other: (above flit now)
Analysis:
setuptools continues to grow in absolute numbers and maintain it’s percentage.
poetry declining
hatchling growing
flit declining
Brian commentary
This is not surprising to me. I generally use hatchling for more control, and setuptools for simple projects. I think we might end up with mostly setuptools and hatchling in a couple years.
Extras
Brian:
Test & Code Archive is now all episodes on one page
Old method was 30 episodes per page
For something completely different
NameGrapher - popularity of US names
No wonder I don’t meet a lot of kids named Brian
Michael is #16 (#1 in 1950s - 1990s)
Brian is #317 (#8 in 1970s)
Joke: The long path to rejection.
...more
31min
January 27, 2025#418 I'm a tea pot
Topics covered in this episode:
In memoriam: Michael Foord 1974-2025
Valkey (Redis Replacement)
30 best practices for software development and testing
mimetype.io
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: In memoriam: Michael Foord 1974-2025
Guido van Rossum and others
We’ve just lost Michael Foord this last weekend.
From Guido:
“Michael, an original thinker if there ever was one, started the tradition of having Language Summit events at PyCon, IIRC together with Barry Warsaw. He also wrote and contributed the influential mock library. … “
“PS. Feel free to post your own (positive) memories of meeting Michael – perhaps his children (10 and 13) will read them when they’re older and this thread might help them remember their father.”
I’ve added my memories. I think this is a great (and small) way to honor him.
My friend Michael - Nicholas Tolervey
After 5 years of trying, I did get an interview with Michael. I wish I’d have gotten that followup.
Test & Code episode with Michael, ep 145, “For those about to mock”
Michael #2: Valkey (Redis Replacement)
Thanks Calvin HP
An open source (BSD) high-performance key/value datastore that supports a variety of workloads such as caching, message queues.
Can act as a primary database.
Valkey can run as either a standalone daemon or in a cluster, with options for replication and high availability.
Valkey natively supports a rich collection of datatypes, including strings, numbers, hashes, lists, sets, sorted sets, bitmaps, hyperloglogs and more.
You can operate on data structures in-place with an expressive collection of commands.
Brian #3: 30 best practices for software development and testing
Michael Foord (from 2017)
Some gems
1 - YAGNI
6 - Unit tests test to the unit of behavior, not the unit of implementation.
8 - Code is the enemy: It can go wrong, and it needs maintenance. Write less code. Delete code. Don’t write code you don’t need.
15 - The more you have to mock out to test your code, the worse your code is.
and so many more …
Michael #4: mimetype.io
I’m always forgetting content types!
Also, shout out to httpstatuses.io
Extras
Brian:
Python 1.0.0 released 31 years ago
Michael:
Python 3.14.0 alpha 4 is out
Joke: Tea Time
...more
21min
January 21, 2025#417 Bugs hide from the light
Topics covered in this episode:
LLM Catcher
On PyPI Quarantine process
RESPX
Unpacking kwargs with custom objects
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: LLM Catcher
via Pat Decker
Large language model diagnostics for python applications and FastAPI applications .
Features
Exception diagnosis using LLMs (Ollama or OpenAI)
Support for local LLMs through Ollama
OpenAI integration for cloud-based models
Multiple error handling approaches:
Function decorators for automatic diagnosis
Try/except blocks for manual control
Global exception handler for unhandled errors from imported modules
Both synchronous and asynchronous APIs
Flexible configuration through environment variables or config file
Brian #2: On PyPI Quarantine process
Mike Fiedler
Project Lifecycle Status - Quarantine in his "Safety & Security Engineer: First Year in Review post”
Some more info now in Project Quarantine
Reports of malware in a project kick things off
Admins can now place a project in quarantine, allowing it to be unavailable for install, but still around for analysis.
New process allows for packages to go back to normal if the report is false.
However
Since August, the Quarantine feature has been in use, with PyPI Admins marking ~140 reported projects as Quarantined.
Of these, only a single project has exited Quarantine, others have been removed.
Michael #3: RESPX
Mock HTTPX with awesome request patterns and response side effects
A simple, yet powerful, utility for mocking out the HTTPX, and HTTP Core, libraries.
Start by patching HTTPX, using respx.mock, then add request routes to mock responses.
For a neater pytest experience, RESPX includes a respx_mock fixture
Brian #4: Unpacking kwargs with custom objects
Rodrigo
A class needs to have
a keys() method that returns an iterable.
a __getitem__() method for lookup
Then double splat ** works on objects of that type.
Extras
Brian:
A surprising thing about PyPI's BigQuery data - Hugovk
Top PyPI Packages (and therefore also Top pytest Plugins) uses a BigQuery dataset
Has grabbed 30-day data of 4,000, then 5,000, then 8,000 packages.
Turns out 531,022 packages (amount returned when limit set to a million) is the same cost.
So…. hoping future updates to these “Top …” pages will have way more data.
Also, was planning on recording a Test & Code episode on pytest-cov today, but haven’t yet. Hopefully at least a couple of new episodes this week.
Finally updated pythontest.com with BlueSky links on home page and contact page.
Michael:
Follow up from Owen (uv-secure):
Thanks for the multiple shout outs! uv-secure just uses the PyPi json API at present to query package vulnerabilities (same as default source for pip audit). I do smash it asynchronously for all dependencies at once... but it still takes a few seconds.
Joke: Bugs hide from the light!
...more
24min
January 13, 2025#416 A Ghostly Episode
Topics covered in this episode:
Terminals & Shells
Winloop: An Alternative library for uvloop compatibility with windows
Ruff & uv
uv-secure
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: Terminals & Shells
Ghostty is out
Started by Mitchel Hashimoto, one of the co-founders of Hashicorp
“Ghostty is a terminal emulator that differentiates itself by being fast, feature-rich, and native. While there are many excellent terminal emulators available, they all force you to choose between speed, features, or native UIs. Ghostty provides all three.”
Currently for macOS & Linux (Windows planned)
Version 1.0.1 released Dec 31, announced in Oct
Features: cross-platform, windows, tabs, and splits, Themes, Ligatures, …
Shell Integration: Some Ghostty features require integrating with your shell. Ghostty can automatically inject shell integration for bash, zsh, fish, and elvish.
Fish is moving to Rust
“fish is a smart and user-friendly command line shell with clever features that just work, without needing an advanced degree in bash scriptology.”
“fish 4.0 is a big upgrade. It’s got lots of new features to make using the command line easier and more enjoyable, such as more natural key binding and expanded history search. And under the hood, we’ve rebuilt the foundation in Rust.”
Michael #2: Winloop: An Alternative library for uvloop compatibility with windows
via Owen Lamont
An alternative library for uvloop compatibility with windows .
It always felt disappointing when libuv is available for windows but windows was never compatible with uvloop.
Brian #3: Ruff & uv
Ruff 0.9.0 has a new 2025 style guide
f-string formatting improvements
Now formats expressions interpolated inside f-string curly braces
Quotes normalized according to project config
Unnecessary escapes removed
Examines interpolated expressions to see if splitting the string over multiple lines is ok
Other changes to, but it’s the f-string improvements I’m excited about.
Python 3.14.0a3 is out, and available with uv
uv python install 3.14 --preview
Michael #4: uv-secure
by Owen Lamont (yes again :) )
This tool will scan PyPi dependencies listed in your uv.lock files (or uv generated requirements.txt files) and check for known vulnerabilities listed against those packages and versions in the PyPi json API.
I don't intend uv-secure to ever create virtual environments or do dependency resolution - the plan is to leave that all to uv since it does that so well and just target lock files and fully pinned and dependency resolved requirements.txt files).
Works “out of the box” with a requirements.txt from uv pip compile.
Extras
Brian:
Test & Code Season 2: pytest plugins
Season 1 was something like 223 episodes over 9.5 years
Started the summer of 2015
Send in pytest plugin suggestions to Brian on BlueSky or Mastodon
or the contact form at pythontest.com
Michael:
Episode Deep Dive feature at Talk Python
Feedback on social media:
Those deep dives look really handy. Yes, those ARE really handy! Thanks for doing that.
wow, yes please! This is awesome.
Wow, this is amazing. … It helps when going back to check something (without having to re-listen).
PyCon Austria at.pycon.org
Heavy metal status codes
Beautiful Soup feedback CFA via Sumana Harihareswara
Joke: That's a stupid cup
...more
44min
December 23, 2024#415 Just put the fries in the bag bro
Topics covered in this episode:
dbos-transact-py
Typed Python in 2024: Well adopted, yet usability challenges persist
RightTyper
Lazy self-installing Python scripts with uv
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: dbos-transact-py
DBOS Transact is a Python library providing ultra-lightweight durable execution.
Durable execution means your program is resilient to any failure.
If it is ever interrupted or crashes, all your workflows will automatically resume from the last completed step.
Under the hood, DBOS Transact works by storing your program's execution state (which workflows are currently executing and which steps they've completed) in a Postgres database.
Incredibly fast, for example 25x faster than AWS Step Functions.
Brian #2: Typed Python in 2024: Well adopted, yet usability challenges persist
Aaron Pollack on Engineering at Meta blog
“Overall findings
88% of respondents “Always” or “Often” use Types in their Python code.
IDE tooling, documentation, and catching bugs are drivers for the high adoption of types in survey responses,
The usability of types and ability to express complex patterns still are challenges that leave some code unchecked.
Latency in tooling and lack of types in popular libraries are limiting the effectiveness of type checkers.
Inconsistency in type check implementations and poor discoverability of the documentation create friction in onboarding types into a project and seeking help when using the tools. “
Notes
Seems to be a different survey than the 2023 (current) dev survey. Diff time frame and results. July 29 - Oct 8, 2024
Michael #3: RightTyper
A fast and efficient type assistant for Python, including tensor shape inference
Brian #4: Lazy self-installing Python scripts with uv
Trey Hunner
Creating your own ~/bin full of single-file command line scripts is common for *nix folks, still powerful but underutilized on Mac, and trickier but still useful on Windows.
Python has been difficult in the past to use for standalone scripts if you need dependencies, but that’s no longer the case with uv.
Trey walks through user scripts (*nix and Mac)
Using #! for scripts that don’thave dependencies
Using #! with uv run --script and /// script for dependencies
Discussion about how uv handles that.
Extras
Brian:
Courses at pythontest.com
If you live in a place (or are in a place in your life) where these prices are too much, let me know. I had a recent request and I really appreciate it.
Michael:
Python 3.14 update released
Top episodes of 2024 at Talk Python
Universal check for updates macOS:
Settings > Keyboard > Keyboard shortcuts > App shortcuts > +
Then add shortcut for single app, ^U and the menu title.
Joke: Python with rizz
...more
33min
December 16, 2024#414 Because we are not monsters
Topics covered in this episode:
New project to shorten django-admin to django because we are not monsters
django-unicorn: The magical reactive component framework for Django
Testing some tidbits
The State of Python 2024 article
Extras
Joke
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: New project to shorten django-admin to django because we are not monsters
Jeff Tripplet has created django-cli-no-admin to shorten django-admin to just django.
“One of the biggest mysteries in Django is why I have to run django-admin from my terminal instead of just running django. Confusingly, django-admin has nothing to do with Django’s admin app.”
Instead of typing things like: django-admin startproject mysite projectname
We can type the shorter: django startproject mysite projectname
I love this kind of developer speedup / comfort improvements
And yes, Jeff wants Django to eventually include this as the default way to run the command line utilities.
Michael #2: django-unicorn: The magical reactive component framework for Django
Add modern site functionality: Quickly add in simple interactions to regular Django templates without learning a new templating language.
Skip the JavaScript build tools
No API required: Skip creating a bunch of serializers and just use Django.
Brian #3: Testing some tidbits
Ned Batchelder
Different ways to test to see if a string has only 0 or 1 in it.
And also, a way to check all the different ways to make sure they work.
Fun post, and I learned about
cleandoc - a way to strip leading blank space and maintain code block indentation
I usually use textwrap.dedent()
partition - splitting strings based on a substring
Using | to pass imports to eval() - I don't use eval much.
However, no pytest!
Here’s a way to check all this with pytest:
Testing some tidbits with pytest
Michael #4: The State of Python 2024 article
Python usage with other languages drops as general adoption grows
41% of Python developers have under 2 years of experience
Python learning expands through diverse channels
The Python 2 vs. 3 divide is in the distant past
Flask, Django, and FastAPI remain top Python web frameworks
Most Python web apps run on hyperscale clouds
Containers over VMs over hardware
uv takes Python packaging by storm
Extras
Brian:
More Django: Dracula Theme for Django Admin
Michael:
Zen Browser update
Office refresh
Transcripts (in some players)
Joke:
Volkswagen, passing all the tests
...more
30min
December 09, 2024#413 python-build-standalone finds a home
Topics covered in this episode:
jiter
A new home for python-build-standalone
moka-py
uv: An In-Depth Guide
Extras
Joke
Watch on YouTube
About the show
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Connect with the hosts
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Michael #1: jiter
Fast iterable JSON parser.
About to be the backend for Pydantic and Logfire.
Currently powers OpenAI / ChatGPT (along with Pydantic itself), at least their Python library, maybe more.
jiter has three interfaces:
JsonValue an enum representing JSON data
Jiter an iterator over JSON data
PythonParse which parses a JSON string into a Python object
jiter-python - This is a standalone version of the JSON parser used in pydantic-core. The recommendation is to only use this package directly if you do not use pydantic
Brian #2: A new home for python-build-standalone
Charlie Marsh
See also Transferring Python Build Standalone Stewardship to Astral from Gregory Szorc
python-build-standalone is the project that has prebuilt binaries for different architectures.
used by uv python install 3.12 and uv venv .venv --python 3.12 and uv sync
This is good stability news for everyone.
Interesting discussion of prebuilt Python from Charlie
Michael #3: moka-py
A high performance caching library for Python written in Rust
moka-py is a Python binding for the highly efficient Moka caching library written in Rust.
This library allows you to leverage the power of Moka's high-performance, feature-rich cache in your Python projects.
Features
Synchronous Cache: Supports thread-safe, in-memory caching for Python applications.
TTL Support: Automatically evicts entries after a configurable time-to-live (TTL).
TTI Support: Automatically evicts entries after a configurable time-to-idle (TTI).
Size-based Eviction: Automatically removes items when the cache exceeds its size limit using the TinyLFU policy.
Concurrency: Optimized for high-performance, concurrent access in multi-threaded environments.
Brian #4: uv: An In-Depth Guide
On SaaS Pegasus blog, so presumably by Cory Zue
Good intro to uv
Also a nice list of everyday commands
Install python: uv python install 3.12
I don’t really use this anymore, as uv venv .venv --python 3.12 or uv sync install if necessary
create a virtual env: uv venv .venv --python 3.12
install stuff: uv pip install django
add project dependencies
build pinned dependencies
Also discussion about adopting the new workflow
Extras
Brian:
PydanticAI - not sure why I didn’t see that coming
In the “good to know” and “commentary on society” area:
Anti-Toxicity Features on Bluesky
The WIRED Guide to Protecting Yourself From Government Surveillance
Michael:
Go sponsor a bunch of projects on GitHub
Registration is open for PyCon
Joke: Inf
...more
31min

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