Épisodes

  • #385 RESTing on Postgres

    #385 RESTing on Postgres
    May 27 2024
    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: @mkennedy@fosstodon.org
    • Brian: @brianokken@fosstodon.org
    • Show: @pythonbytes@fosstodon.org

    Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays at 10am PT. Older video versions available there too.

    Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it.

    Michael #1: 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
    Voir plus Voir moins
    24 min
  • #384 Force push lightly

    #384 Force push lightly
    May 21 2024
    Topics covered in this episode: Git: Force push safely with --force-with-lease and --force-if-includesThoughts from PyCon 2024Being friendly: Strategies for friendly fork managementtachExtrasJokeWatch on YouTube About the show Sponsored by Mailtrap: pythonbytes.fm/mailtrap Connect with the hosts Michael: @mkennedy@fosstodon.orgBrian: @brianokken@fosstodon.orgShow: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays at 10am PT. Older video versions available there too. Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it. Brian #1: Git: Force push safely with --force-with-lease and --force-if-includes Adam JohnsonUsing 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 expectGreat to see many old friendsDid 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 101Lessley Dennington on GitHub BlogExamples of long running friendly forks git-for-windows/git, microsift/git, github/gittwo public, one privateFork management strategies - when pulling changes downstream merging rebase git-for-windows/git uses this proactively and regularlyfake merge + rebasenew branch microsoft/git uses thisnew branch from upstream major versionsmerge previous changes to new branchtraditional 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
    Voir plus Voir moins
    26 min
  • #383 Why aren’t devs shipping faster?

    #383 Why aren’t devs shipping faster?
    May 14 2024
    Topics covered in this episode: I asked 100 devs why they aren’t shipping faster. Here’s what I learnedPython 3.13.0 beta 1 releasedA theme editor for JupyterLabrich-argparseExtrasJokeWatch on YouTube About the show Sponsored by Mailtrap: pythonbytes.fm/mailtrap Connect with the hosts Michael: @mkennedy@fosstodon.orgBrian: @brianokken@fosstodon.orgShow: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays at 10am PT. Older video versions available there too. Finally, if you want an artisanal, hand-crafted digest of every week of the show notes in email form? Add your name and email to our friends of the show list, we'll never share it. Michael #1: I asked 100 devs why they aren’t shipping faster. Here’s what I learned by Daksh Gupta (via PyCoders)What’s stopping you from shipping faster? Dependency bugs Complicated codebase >There is so much undocumented in our service, including poor records of new features, nonexistent or outdated info on our dependencies, or even essential things like best practices for testing, a lot of time is wasted in syncs trying to find the right informationQA LoopsWaiting for spec > At Amazon? Meetings, approval, talking to 10 different stakeholders because changing the color of a button affects 15 micro servicesWriting testsDeployment/build speedScope creep > The human tendency to stuff last-minute items into the crevices of their luggage minutes before leaving for the airport manifests itself at software companies as scope creep.Unclear requirementsExcessive meetingsMotivation >honest answer is i was on ads>and that’s a very old / complicated / large stack (edited)>and i didn’t understand it>my friends on younger teams seemed happier, i was miserableDORA metrics Brian #2: Python 3.13.0 beta 1 released "Python 3.13 is still in development. This release, 3.13.0b1, is the first of four beta release previews of 3.13.”New REPL, featuring multi-line editing, color support, colorized exception tracebacksCool GIL, JIT, and GC featuresTyping changes, including typing.TypeIs . See last weeks episode and TypeIs does what I thought TypeGuard would do in PythonSome nice dead battery removalsand moreBut seriously, the REPL is cool. Just ask Trey The new REPL in Python 3.13 - Trey Hunner Michael #3: A theme editor for JupyterLab by Florence HaudinA new tool for authoring JupyterLab themesTo lower the bar for customizing JupyterLab we created a new tool providing a simple interface for tuning the JupyterLab appearance interactively.See jupyterlab-theme-editor on github Brian #4: rich-argparse “Format argparse and optparse help using rich.”“rich-argparse improves the look and readability of argparse's help while requiring minimal changes to the code.”They’re not kidding. 2 line code change. from rich_argparse import RichHelpFormatter parser = argparse.ArgumentParser(..., formatter_class=RichHelpFormatter) Extras Brian: pytest course is now switched to the new platform. I sent out an email including how to save their spot on the old site and mark that spot complete on the new site.There’s now comments on the course now. Trying that out. If you’ve got a question, just ask in that section. Michael: A new Talk Python course: Getting Started with NLP and spaCy Joke: Testing holiday
    Voir plus Voir moins
    31 min
  • #382 A Simple Game

    #382 A Simple Game
    May 7 2024
    Topics covered in this episode: act: Run your GitHub Actions locally! portrAnnotating args and kwargs in Pythongithub badgesExtrasJokeWatch on YouTube About the show Sponsored by ScoutAPM: pythonbytes.fm/scout Connect with the hosts Michael: @mkennedy@fosstodon.orgBrian: @brianokken@fosstodon.orgShow: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays at 11am 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: act: Run your GitHub Actions locally! Why? “Fast Feedback - Rather than having to commit/push every time you want to test out the changes you are making to your .github/workflows/ files (or for any changes to embedded GitHub actions), you can use act to run the actions locally. The environment variables and filesystem are all configured to match what GitHub provides.”“Local Task Runner - I love make. However, I also hate repeating myself. With act, you can use the GitHub Actions defined in your .github/workflows/ to replace your Makefile!”Docs: nektosact.comUses Docker to run containers for each action. Michael #2: portr Open source ngrok alternative designed for teamsExpose local http, tcp or websocket connections to the public internetWarning: Portr is currently in beta. Expect bugs and anticipate breaking changes.Server setup (docker basically). Brian #3: Annotating args and kwargs in Python Redowan DelowarI don’t think I’ve ever tried, but this is a fun rabbit hole.Leveraging bits of PEP-5891, PEP-6462, PEP-6553, and PEP-6924.Punchline: from typing import TypedDict, Unpack *# Python 3.12+* *# from typing_extensions import TypedDict, Unpack # < Python 3.12* class Kw(TypedDict): key1: int key2: bool def foo(*args: Unpack[tuple[int, str]], **kwargs: Unpack[Kw]) -> None: ... A recent pic from Redowan’s blog: TypeIs does what I thought TypeGuard would do in Python Michael #4: github badges A curated list of GitHub badges for your next project Extras Brian: Fake job interviews target developers with new Python backdoorLater this week, course.pythontest.com will shift from Teachable to Podia Same great content. Just a different backend.To celebrate, get 25% off at pythontest.podia.com now through this Sunday using coupon code PYTESTGetting the most out of PyCon, including juggling - Rob Ludwick Latest PythonTest episode, also cross posted to pythonpeople.fm3D visualization of dom Michael: Djangonauts Space Session 2 Applications Open! More background at Djangonauts, Ready for Blast-Off on Talk Python.Self-Hosted Open Source - Michael Kennedy on Django Chat Joke: silly games Closing song: Permission Granted
    Voir plus Voir moins
    28 min
  • #381 Python Packages in the Oven

    #381 Python Packages in the Oven
    Apr 30 2024
    Topics covered in this episode: Announcing py2wasm: A Python to Wasm compilerExploring Python packages with Oven and PyPI BrowserPyCharm Local LLMGoogle shedding Python devs (at least in the US).ExtrasJokeWatch on YouTube About the show Sponsored by ScoutAPM: pythonbytes.fm/scout Connect with the hosts Michael: @mkennedy@fosstodon.orgBrian: @brianokken@fosstodon.orgShow: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays at 11am 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: Announcing py2wasm: A Python to Wasm compiler py2wasm converts your Python programs to WebAssembly, running them at 3x faster speedsthanks to Nuitka Brian #2: Exploring Python packages with Oven and PyPI Browser pypi.org is great, but there are some handy alternativesOven Shows how to install stuff with pip, pdm, rye, and poetrySimilar meta and description as PyPIIncludes README.md view (no tables yet, though)Nice listing of versionsAbility to look at what files are in wheels and tarballs (very cool) Can deploy yourself. Node/Remix app.Really slick.PyPI Browser View versionsView wheel and tarball contents.Metadata and contents.No README viewIs a Starlette app that you can deploy on your on with a private registry. So that’s cool. Michael #3: PyCharm Local LLM Pretty awesome full line completer based on a local LLM for PyCharmRequires PyCharm ProfessionalAn example, given this partial function in Flask: @blueprint.get('/listing') def listing(): videos = video_service.all_videos() Typing ret → That is, typing ret autocompletes to: return flask.render_template('home/listing.html', videos=videos) Which is pretty miraculous, and correct. Brian #4: Google shedding Python devs (at least in the US). Google lays off staff from Flutter, Dart and Python teams weeks before its developer conference - techcrunchPython, Flutter teams latest on the Google chopping block - The Register “Despite Alphabet last week reporting a 57 percent year-on-year jump in net profit to $23.66 billion for calendar Q1, more roles are being expunged as the mega-corp cracks down on costs.”“As for the Python team, the current positions have reportedly been "reduced" in favor of a new team based in Munich.”MK: Related and timely: How one power-hungry leader destroyed Google search Extras Brian: Python Gotcha: strip, lstrip, rstrip can remove more than expected Reminder: You probably want .removesuffix() and .removeprefix() Michael: Using Llama3 in LMStudio Joke: Broken System
    Voir plus Voir moins
    29 min
  • #380 Debugging with your eyes

    #380 Debugging with your eyes
    Apr 23 2024
    Topics covered in this episode: NumFOCUS concernsleaping pytest debugger llmExtra, Extra, Extra,PyPI has completed its first security auditExtrasJokeWatch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python TrainingThe Complete pytest CoursePatreon Supporters Connect with the hosts Michael: @mkennedy@fosstodon.orgBrian: @brianokken@fosstodon.orgShow: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays at 11am 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: NumFOCUS concerns Suggested by Pamphile RoyWrite up of the current challenges faced by NumFOCUS, by Paul Ivanov (one of the OG of Scientific Python: Jupyter, Matplotlib, etc.) Struggling to meet the needs of sponsored and affiliated projects.In February, NumFOCUS announced it is moving in a new direction.NumFOCUS initiated an effort to run an election for open board seats and proposed changing its governance structure.Some projects are considering and actively pursuing alternative venues for fiscal sponsorship.Quite a bit more detail and discussion in the article.NumFOCUS covers a lot of projects NumPy, Matplotlib, pandas, Jupyter, SciPy, Astropy, Bokeh, Dask, Conda, and so many more. Michael #2: leaping pytest debugger llm You can ask Leaping questions like: Why am I not hitting function x?Why was variable y set to this value?What was the value of variable x at this point?What changes can I make to this code to make this test pass? Brian #3: Extra, Extra, Extra, 2024 Developer Summit Also suggested by Pamphile, related to Scientific PythonThe Second Scientific Python Developer Summit , June 3-5, Seattle, WALots of great work came out of the First Summit in 2023pytest-regex - Use regexs to specify tests to run Came out of the ’23 summitI’m not sure if I’m super happy about this or a little afraid that I probably could use this.Still, cool that it’s here.Cool short example of using __init__ and __call__ to hand-roll a decorator.ruff got faster Michael #4: PyPI has completed its first security audit Trail of Bits spent a total of 10 engineer-weeks of effort identifying issues, presenting those findings to the PyPI team, and assisting us as we remediated the findings.Scope: The audit was focused on "Warehouse", the open-source codebase that powers pypi.orgAs a result of the audit, Trail of Bits detailed 29 different advisories discovered across both codebases. When evaluating severity level of each advisory, 14 were categorized as "informational", 6 as "low", 8 as "medium" and zero as "high". Extras Brian: pytest course community to try out Podia Communities.Anyone have a podia community running strong now? If so, let me know through Mastodon: @brianokken@fosstodon.orgWant to join the community when it’s up and running? Same. Or join our our friends of the show list, and read our newsletter. I’ll be sure to drop a note in there when it’s ready. Michael: VS Code AMA @ Talk Python [video]Gunicorn CVETalk submissions are now open for both remote and in-person talks at the 2024 PyConZA? The conference will be held on 3 and 4 October 2024 in Cape Town, South Africa. Details are on za.pycon.org.FlaskCon 2024 will be happening Friday, May 17 inside PyCon US 2024. Call for proposals are now live! Joke: Debugging with your eyes
    Voir plus Voir moins
    24 min
  • #379 Constable on the debugging case

    #379 Constable on the debugging case
    Apr 16 2024
    Topics covered in this episode:
    • How to Set Up Pre-Commit Hooks A step-by-step guide to installing and configuring pre-commit hooks on your project.
    • difftastic
    • Quarto
    • constable
    • Extras
    • Joke
    Watch on YouTube

    About the show

    Sponsored by us! Support our work through:

    • Our courses at Talk Python Training
    • The Complete pytest Course
    • Patreon Supporters

    Connect with the hosts

    • Michael: @mkennedy@fosstodon.org
    • Brian: @brianokken@fosstodon.org
    • Show: @pythonbytes@fosstodon.org

    Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays at 11am 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: How to Set Up Pre-Commit Hooks A step-by-step guide to installing and configuring pre-commit hooks on your project.

    • by Stefanie Molin
    • Pre-commit hooks are code checks that run as part of the “pre-commit” stage of the git commit process.
    • If any of these checks fail, git aborts the commit
    • Sometimes, we need to bypass the hooks temporarily. For these instances, we can pass the --no-verify option when we run git commit

    Brian #2: difftastic

    • Found this a couple years ago, but really using it a lot now.
    • Excellent structurally diff tool that compares code based on syntax, not line by line.

    Michael #3: Quarto

    • via Mathias Johansson
    • An open-source scientific and technical publishing system
    • Transforming a notebook into a pdf / HTML / MS Word / ePub with minimal effort, or even all formats at once.
    • Author using Jupyter notebooks or with plain text markdown in your favorite editor.
    • Write using Pandoc markdown, including equations, citations, crossrefs, figure panels, callouts, advanced layout, and more.

    Brian #4: constable

    • “inserts print statements directly into the AST at runtime “
    • “If you find yourself aimlessly adding print statements while debugging your code, this is for you. !”
    • Add decorators like @constable.trace('a', 'b') to functions and you’ll get nice output showing when and how a and b changed.
    • see also icecream for another fun debugging with print project.

    Extras

    Brian:

    • pointers being added to the standard library
      • A couple weeks old, but still worth covering
      • Guido’s take on adding this, "Why the hell not?"

    Michael:

    • Python 3.12.3 is out

    Joke: Hugo SciFi Award
    Voir plus Voir moins
    20 min
  • #378 Python is on the edge

    #378 Python is on the edge
    Apr 9 2024
    Topics covered in this episode: pacemaker - For controlling time per iteration loop in Python.PyPI suspends new user registration to block malware campaignPython Project-Local Virtualenv Management ReduxPython Edge Workers at CloudflareExtrasJokeWatch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python TrainingThe Complete pytest CoursePatreon Supporters Connect with the hosts Michael: @mkennedy@fosstodon.orgBrian: @brianokken@fosstodon.orgShow: @pythonbytes@fosstodon.org Join us on YouTube at pythonbytes.fm/live to be part of the audience. Usually Tuesdays at 11am 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: pacemaker - For controlling time per iteration loop in Python. Brandon RohrerGood example of a small bit of code made into a small package.With speedups to dependencies, like with uv, for example, I think we’ll see more small projects.Cool stuff Great README, including quirks that need to be understood by users. “If the pacemaker experiences a delay, it will allow faster iterations to try to catch up. Heads up: because of this, any individual iteration might end up being much shorter than suggested by the pacemaker's target rate.”Nice use of time.monotonic() deltas are guaranteed to never go back in time regardless of what adjustments are made to the system clock.Watch out for pip install pacemaker-lite NOT pacemakerpacemaker is taken by a package named PaceMaker with a repo named pace-maker, that hasn’t been updated in 3 years. Not sure if it’s alive. No tests (yet). I’m sure they’re coming. ;) Seriously though, Brandon says this is “a glorified snippet”. And I love the use of packaging to encapsulate shared code. Realistically, small snippet like packages have functionality that’s probably going to be tested by end user code.And even if there are tests, users should test the functionality they are depending on. Michael #2: PyPI suspends new user registration to block malware campaign Incident Report for Python InfrastructurePyPi Is Under Attack: Project Creation and User Registration Suspended — Here’s the details I hate medium, but it’s the best details I’ve found so far Brian #3: Python Project-Local Virtualenv Management Redux HynekConcise writeup of how Hynek uses various tools for dealing with environmentsCovers (paren notes are from Brian) In project .venv directoriesdirenv for handling .envrc files per project (time for me to try this again)uv for pip and pip-compile functionalityInstalling Python via python.orgUsing a .python-version-default file (I’ll need to play with this a bit) Works with GH Action setup-python. (ok. that’s cool)Some fish shell scriptingBonus tip on using requires-python in .pyproject.toml and extracting it in GH actions to be able to get the python exe name, and then be able to pass it to Docker and reference it in a Dockerfile. (very cool) Michael #4: Python Edge Workers at Cloudflare What are edge workers?Based on workers using Pyodide and WebAssemblyThis new support for Python is different from how Workers have historically supported languages beyond JavaScript — in this case, we have directly integrated a Python implementation into workerd, the open-source Workers runtime.Python Workers can import a subset of popular Python packages including FastAPI, Langchain, numpyCheck out the examples repo. Extras Michael: LPython follow up from Brian SkinnFeatured on Python Bytes badgeA little downtime, thanks for the understanding We were rocking a 99.98% uptime until then. :) Joke: C++ is not safe for people under 18Baseball joke
    Voir plus Voir moins
    31 min