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Python Bytes

Python Bytes

Auteur(s): Michael Kennedy and Brian Okken
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 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.Copyright 2016-2025 Politique
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  • #460 Overlooked Python Typing

    #460 Overlooked Python Typing
    Dec 1 2025
    Topics covered in this episode: Advent of Code starts todayDjango 6 is comingAdvanced, Overlooked Python TypingcodespellExtrasJokeWatch 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.org / @mkennedy.codes (bsky)Brian: @brianokken@fosstodon.org / @brianokken.bsky.socialShow: @pythonbytes@fosstodon.org / @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: Advent of Code starts today A few changes, like 12 days this year, which honestly, I’m grateful for. Michael #2: Django 6 is coming Expected December 2025Django 6.0 supports Python 3.12, 3.13, and 3.14Built-in support for the Content Security Policy (CSP) standard is now available, making it easier to protect web applications against content injection attacks such as cross-site scripting (XSS).The Django Template Language now supports template partials, making it easier to encapsulate and reuse small named fragments within a template file.Django now includes a built-in Tasks framework for running code outside the HTTP request–response cycle. This enables offloading work, such as sending emails or processing data, to background workers.Email handling in Django now uses Python’s modern email API, introduced in Python 3.6. This API, centered around the email.message.EmailMessage class Brian #3: Advanced, Overlooked Python Typing get_args, TypeGuard, TypeIs, and more goodies Michael #4: codespell Learned from this PR for the Talk Python book.Fix common misspellings in text files.It's designed primarily for checking misspelled words in source code (backslash escapes are skipped), but it can be used with other files as well.It does not check for word membership in a complete dictionary, but instead looks for a set of common misspellings. Therefore it should catch errors like "adn", but it will not catch "adnasdfasdf".It shouldn't generate false-positives when you use a niche term it doesn't know about. Extras Michael: Follow up on tach from Gerben Dekker: tach has been unmaintained for a bit but is not anymore. It was the main product from Gauge which is a Y combinator startup that pivoted to something unrelated and abandoned tach. However, https://github.com/DetachHead forked it but now got access to the main repo and has committed to maintaining it.ruff analyze graph is fully independent of tach - we actually started to look into alternatives for tach when it became unmaintained and then found ruff analyze graph.For our use case, with just a bit of manipulation on top of ruff analyze graph we replaced our use of deptry (which was slower - and I try to be careful depending on one-man projects).A Review of Michael Kennedy’s book, “Talk Python in Production” - Thanks Doug Joke: NoaaS
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    24 min
  • #459 Inverted dependency trees

    #459 Inverted dependency trees
    Nov 24 2025
    Topics covered in this episode: PEP 814 – Add frozendict built-in typeFrom Material for MkDocs to ZensicalTachSome Python Speedups in 3.15 and 3.16ExtrasJokeAbout 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.org / @mkennedy.codes (bsky)Brian: @brianokken@fosstodon.org / @brianokken.bsky.socialShow: @pythonbytes@fosstodon.org / @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 #0: Black Friday is on at Talk Python What’s on offer: An AI course mini bundle (22% off)20% off our entire library via the Everything Bundle (what's that? ;) )The new Talk Python in Production book (25% off) Brian: This is peer pressure in action 20% off The Complete pytest Course bundle (use code BLACKFRIDAY) through November or use save50 for 50% off, your choice.Python Testing with pytest, 2nd edition, eBook (50% off with code save50) also through November I would have picked 20%, but it’s a PragProg wide thing Michael #1: PEP 814 – Add frozendict built-in type by Victor Stinner & Donghee NaA new public immutable type frozendict is added to the builtins module.We expect frozendict to be safe by design, as it prevents any unintended modifications. This addition benefits not only CPython’s standard library, but also third-party maintainers who can take advantage of a reliable, immutable dictionary type.To add to existing frozen types in Python. Brian #2: From Material for MkDocs to Zensical Suggested by John HagenA lot of people, me included, use Material for MkDocs as our MkDocs theme for both personal and professional projects, and in-house docs.This plugin for MkDocs is now in maintenance modeThe development team is switching to working on Zensical, a static site generator to overcome some technical limitations with MkDocs. There’s a series of posts about the transition and reasoning Transforming Material for MkDocsZensical – A modern static site generator built by the creators of Material for MkDocsMaterial for MkDocs Insiders – Now free for everyoneGoodbye, GitHub DiscussionsMaterial for MkDocs still around, but in maintenance modeall insider features now available to everyoneZensical is / will be compatible with Material for Mkdocs, can natively read mkdocs.yml, to assist with the transitionOpen Source, MIT licensefunded by an offering for professional users: Zensical Spark Michael #3: Tach Keep the streak: pip deps with uv + tachFrom Gerben DeckerWe needed some more control over linting our dependency structure, both internal and external.We use tach (which you covered before IIRC), but also some home built linting rules for our specific structure. These are extremely easy to build using an underused feature of ruff: "uv run ruff analyze graph --python python_exe_path .".Example from an app I’m working on (shhhhh not yet announced!) Brian #4: Some Python Speedups in 3.15 and 3.16 A Plan for 5-10%* Faster Free-Threaded JIT by Python 3.16 5% faster by 3.15 and 10% faster by 3.16Decompression is up to 30% faster in CPython 3.15 Extras Brian: LeanTDD book issue tracker Michael: No. 4 for dependencies: Inverted dep trees from Bob Belderbos Joke: git pull inception
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    33 min
  • #458 I will install Linux on your computer

    #458 I will install Linux on your computer
    Nov 17 2025
    Topics covered in this episode: Possibility of a new website for DjangoaiosqlitepooldeptrybrowsrExtrasJokeWatch 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.org / @mkennedy.codes (bsky)Brian: @brianokken@fosstodon.org / @brianokken.bsky.socialShow: @pythonbytes@fosstodon.org / @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: Possibility of a new website for Django Current Django site: djangoproject.comAdam Hill’s in progress redesign idea: django-homepage.adamghill.comCommentary in the Want to work on a homepage site redesign? discussion Michael #2: aiosqlitepool 🛡️A resilient, high-performance asynchronous connection pool layer for SQLite, designed for efficient and scalable database operations.About 2x better than regular SQLite.Pairs with aiosqliteaiosqlitepool in three points: Eliminates connection overhead: It avoids repeated database connection setup (syscalls, memory allocation) and teardown (syscalls, deallocation) by reusing long-lived connections.Faster queries via "hot" cache: Long-lived connections keep SQLite's in-memory page cache "hot." This serves frequently requested data directly from memory, speeding up repetitive queries and reducing I/O operations.Maximizes concurrent throughput: Allows your application to process significantly more database queries per second under heavy load. Brian #3: deptry “deptry is a command line tool to check for issues with dependencies in a Python project, such as unused or missing dependencies. It supports projects using Poetry, pip, PDM, uv, and more generally any project supporting PEP 621 specification.”“Dependency issues are detected by scanning for imported modules within all Python files in a directory and its subdirectories, and comparing those to the dependencies listed in the project's requirements.”Note if you use project.optional-dependencies [project.optional-dependencies] plot = ["matplotlib"] test = ["pytest"] you have to set a config setting to get it to work right: [tool.deptry] pep621_dev_dependency_groups = ["test", "docs"] Michael #4: browsr browsr 🗂️ is a pleasant file explorer in your terminal. It's a command line TUI (text-based user interface) application that empowers you to browse the contents of local and remote filesystems with your keyboard or mouse.You can quickly navigate through directories and peek at files whether they're hosted locally, in GitHub, over SSH, in AWS S3, Google Cloud Storage, or Azure Blob Storage.View code files with syntax highlighting, format JSON files, render images, convert data files to navigable datatables, and more. Extras Brian: Understanding the MICROTDD chapter coming out later today or maybe tomorrow, but it’s close. Michael: Peacock is excellent Joke: I will find you
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    23 min
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