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 s... more

· Technology

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The podcast currently has 598 episodes available.

Python Bytes episodes:

July 23, 2024#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: @[email protected]
Brian: @[email protected]
Show: @[email protected]
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.
...more
32min
July 17, 2024#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: @[email protected]
Brian: @[email protected]
Show: @[email protected]
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)
...more
26min
July 09, 2024#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: @[email protected]
Brian: @[email protected]
Show: @[email protected]
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
...more
27min
July 02, 2024#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: @[email protected]
Brian: @[email protected]
Show: @[email protected]
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
...more
37min
June 24, 2024#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: @[email protected]
Brian: @[email protected]
Show: @[email protected]
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
...more
32min
June 18, 2024#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: @[email protected]
Brian: @[email protected]
Show: @[email protected]
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
...more
22min
June 11, 2024#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: @[email protected]
Brian: @[email protected]
Show: @[email protected]
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
...more
28min
June 04, 2024#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: @[email protected]
Brian: @[email protected]
Show: @[email protected]
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
...more
21min
May 27, 2024#385 RESTing on Postgres
Topics covered in this episode:
PostgresREST
How Python Asyncio Works: Recreating it from Scratch
Bend
The Smartest Way to Learn Python Regular Expressions
Extras
Joke
Watch on YouTube
About the show
Sponsored by Mailtrap: pythonbytes.fm/mailtrap
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 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: PostgresREST
PostgREST serves a fully RESTful API from any existing PostgreSQL database. It provides a cleaner, more standards-compliant, faster API than you are likely to write from scratch.
Speedy
First the server is written in Haskell using the Warp HTTP server (aka a compiled language with lightweight threads).
Next it delegates as much calculation as possible to the database.
Finally it uses the database efficiently with the Hasql library
PostgREST handles authentication (via JSON Web Tokens) and delegates authorization to the role information defined in the database. This ensures there is a single declarative source of truth for security.
Brian #2: How Python Asyncio Works: Recreating it from Scratch
Jacob Padilla
Cool tutorial walking through how async works, including
Generators Review
The Event Loop
Sleeping
Yield to Await
Await with AsyncIO
Another great async resource is:
Build your Own Async
David Beasley talk from 2019
Michael #3: Bend
A massively parallel, high-level programming language.
With Bend you can write parallel code for multi-core CPUs/GPUs without being a C/CUDA expert with 10 years of experience.
It feels just like Python!
No need to deal with the complexity of concurrent programming: locks, mutexes, atomics... any work that can be done in parallel will be done in parallel.
Brian #4: The Smartest Way to Learn Python Regular Expressions
Christian Mayer, Zohaib Riaz, and Lukas Rieger
Self published ebook on Python Regex that utilizes
book form readings, links to video course sections
puzzle challenges to complete online
It’s a paid resource, but the min is free.
Extras
Brian:
Replay - A graphic memoir by Prince of Persia creator Jordan Mechner, recounting his own family story of war, exile and new beginnings.
Michael:
PyCon 2026
Joke: Shells Scripts
...more
25min
May 21, 2024#384 Force push lightly
Topics covered in this episode:
Git: Force push safely with --force-with-lease and --force-if-includes
Thoughts from PyCon 2024
Being friendly: Strategies for friendly fork management
tach
Extras
Joke
Watch on YouTube
About the show
Sponsored by Mailtrap: pythonbytes.fm/mailtrap
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 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: Git: Force push safely with --force-with-lease and --force-if-includes
Adam Johnson
Using gentle force
Avoid stomping on remote changes with a couple extra flags.
Michael #2: Thoughts from PyCon 2024
PyCon is special - the connections you make are always more than you expect
Great to see many old friends
Did a ”live” Talk Python episode that’ll be out in a few weeks.
The talks look great, we’ll let you know when they land on YouTube.
Masks were a mistake - universally heard complaints from fellow attendees. This is my two cents towards a more reasonable next PyCon.
Brian #3: Being friendly: Strategies for friendly fork management
That’s part 2.
Part 1 is Being friendly: Friendly forks 101
Lessley Dennington on GitHub Blog
Examples of long running friendly forks
git-for-windows/git, microsift/git, github/git
two public, one private
Fork management strategies - when pulling changes downstream
merging rebase
git-for-windows/git uses this proactively and regularly
fake merge + rebase
new branch
microsoft/git uses this
new branch from upstream major versions
merge previous changes to new branch
traditional merge
github/git uses this, conservatively, after a few point bug fix versions
Michael #4: tach
A Python tool to enforce a modular, decoupled package architecture.
tach allows you to define boundaries and control dependencies between your Python packages.
Each package can define its public interface.
If a package tries to import from another package that is not listed as a dependency, tach will report an error.
If a package tries to import from another package and does not use its public interface, with strict: true set, tach will report an error.
Zero runtime impact.
Extras
Brian:
Logfire - new observability platform from the pydantic team - free for now
Michael:
10% off the new spaCy course throughout May
Joke: Evolution of smart products
...more
26min

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