Python Bytes

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Python People Podcast 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. Brian #1: Differentiating between writing down dependencies to use packages and for packages themselves Brett Cannon Why can’t we just use pyproject.toml and stop using requirements.txt? Nope. At least not yet. They’re currently for different things. pyproject.toml There’s project.dependencies and project.optional-dependencies.tests that kinda would work for listing dependencies for an app. But you can’t say pip install -r pyproject.toml. It doesn’t work. And that’s weird. project is intended for packaged projects. requirements.txt for applications and other non-packaged projects It h

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Python People Podcast 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. Michael #1: async-timeout An asyncio-compatible timeout context manager. The context manager is useful in cases when you want to apply timeout logic around block of code or in cases when asyncio.wait_for() is not suitable. Not finished yet timeout can be rescheduled by shift_by() or shift_to() methods Brian #2: PyPI Project URLs Cheatsheet Daniel Roy Greenfield There’s some cool icons available under “Project Links” on pypi.org project pages. How do you get those? And which ones are available. Daniel has found out where to look, and built us a cheat sheet. Nice. Michael #3: httpx-ss

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Python People Podcast 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. Brian #1: A Steering Council notice about PEP 703 (Making the Global Interpreter Lock Optional in CPython) Thomas Wouters Suggested by John Hagen “We intend to accept PEP 703, although we’re still working on the acceptance details.” Moving forward in 3 stages short-term, no-GIL experimental build in 3.13 or 3.14 mid-term, declare support for no-GIL version long-term, no-GIL becomes default and remove any vestiges of the GIL No commitment and timeframe is nebuous long-term means 5+ years Need community support “We want to be able to change our mind if it turns out, any time before we mak

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training The Python People Podcast 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. Michael #1: Cython 3.0 Long in development, the new major release of the Python-to-C compiler sheds legacy Python support and readies Cython developers for big changes in Python. Cython 3 cleans up and modernizes Cython. Pure Python mode allows Python developers to use their existing Python linting and code analysis tools on Cython. Brian #2: Reading code : An important but seldom-discussed skill Eric Matthes A cool walk through of several techniques to read code Strategies Ignore function definitions And in the example, also ignore comments Simplify repetitive blocks Examples

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Test & Code Podcast 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. Main topic: AMA questions from the audience. Use the transcript search to find timestamps if you want to locate a particular one. Extras Michael: Deputy CPython Developer in Residence position accepting applications. My Make Your Python Web App Fly Around the World with CDNs talk at PWC 2023 is online. “Joke”: Ode to Python recommended by FelixTheCat

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Test & Code Podcast 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. Michael #1: Pydantic v2 released Pydantic V2 is compatible with Python 3.7 and above. There is a migration guide. Check out the bump-pydantic tool to auto upgrade your classes Brian #2: Two Ways to Turbo-Charge tox Hynek Not just tox run-parallel or tox -p or tox --``parallel , but you should know about that also. The 2 ways Build one wheel instead of N sdists Run pytest in parallel tox builds source distributions, sdists, for each environment before running tests. that’s not really what we want, especially if we have a test matrix. It’d be better to build a wheel once, and use

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Test & Code Podcast 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. Brian #1: Plumbum: Shell Combinators and More Suggested by Henry Schreiner last week. (Also, thanks Michael for the awesome search tool on PythonBytes.fm that includes transcripts, so I can find stuff discussed and not just stuff listed in the show notes.) Plumbum is “ a small yet feature-rich library for shell script-like programs in Python. The motto of the library is “Never write shell scripts again”, and thus it attempts to mimic the shell syntax (shell combinators) where it makes sense, while keeping it all Pythonic and cross-platform.” Supports local commands piping redirection w

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Test & Code Podcast 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. Michael #1: Pydantic roadmap via Mario Munoz Back in February [Samuel] [announced](https://pydantic.dev/announcement/) Pydantic Inc., but I didn't explain what services we were building. The problem is that even with Pydantic in your corner, working with data when it leaves Python often still sucks. We want to build a data platform to make working with data quick, easy, and enjoyable — where developer experience is our north star. There are five key components to the Pydantic Data Platform that we're thinking of building. Python Analytics/Observability — a logging and metrics platform

Watch on YouTube About the show Sponsored by InfluxDB from Influxdata. 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. Ask me anything episode: Submit your question(s) for our upcoming AMA episode: form here. Thank you! Brian #1: PythonGUIS Martin Fitzpatrick A site with a collection of resources, guides, books, comparisons, etc, around GUIs in Python. Martin recommends starting with PyQT6 However, there are tutorials covering PyQT6 PySide6 PyQT5 TkInter PySide even Kivy Michael #2: JupyterLab 4.0 is Here The next major release of our full-featured development environment You can upgrade by running pip install --upgrade jupyterlab or conda install -c conda-forge jupyterlab. JupyterLab is now faster, thanks to improvements such as CSS rules optimization, CodeMirror 6, MathJax 3, a

Watch on YouTube About the show Sponsored by InfluxDB from Influxdata. 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. Michael #1: pystack PyStack is a tool that uses forbidden magic to let you inspect the stack frames of a running Python process or a Python core dump, helping you quickly and easily learn what it's doing. PyStack has the following amazing features:

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Test & Code Podcast 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. Brian #1: The Basics of Python Packaging in Early 2023 Jay Qi Good description of a minimal-ish pyproject.toml file, which includes a build backend and project metadata. That’s all you need for a Python-only project. Discussion of how to choose a build backend. Mostly it’s baed on extra features you might want, like hatchling’s include/exclude features for source distributions. Some discussion of frontend choices. Nice discussion of non-Python-only builds. Specifically, if you need to compile C or C++ extensions, you can use scikit-build-core, or meson-python, or setuptools. Related:

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Test & Code Podcast Patreon Supporters Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.org Special guest: GUEST_PROFILE 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. Michael #1: Ruff PyCharm plugin via John Hagen Ruff PyCharm plugin has great integration, it will highlight Ruff lint errors in the IDE as you type and you can even apply Alt+Enter (⌥⏎ on Mac) quick fixes through the IDE. Ruff will automatically fix the fixable issues. John also added additional PyCharm-specific instructions for black/Ruff Brian #2: Writing Python like it's Rust Kobzol Rust lessons guiding use of types and type hints in Python Add type hints tun function signatures Use dataclasses instead of tuples or dictionaries to increase clarity

Watch on YouTube About the show Sponsored by InfluxDB from Influxdata. 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. Brian #1: Python's Missing Batteries: Essential Libraries You're Missing Out On Martin Heinz Fun collection of a bunch of libraries you may not know about (or forgot about), with code examples. Utilities boltons : iterate through json and dates, quickly grab data out of nested structures, and convert nested data with jsonutils, timeutils, and iterutils sh : conveniently call shell funcitons Data Validation validators : validate email addresses, credit cars, IP addresses, and more. the fuzz : fuzzy string comparisons Debugging stackprinter : nice stack traces with exception messages higlighted Testing freezegun : stop time, change dates, … dirty_equals : comparing

Watch on YouTube About the show Sponsored by InfluxDB from Influxdata. 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. Michael #1: Introducing 'Trusted Publishers’ PyPI package maintainers can adopt a new, more secure publishing method that does not require long-lived passwords or API tokens to be shared with external systems. Our term for using the OpenID Connect (OIDC) standard to exchange short-lived identity tokens between a trusted third-party service and PyPI. Instead, PyPI maintainers can configure PyPI to trust an identity provided by a given OpenID Connect Identity Provider (IdP). These API tokens never need to be stored or shared rotate automatically by expiring quickly provide a verifiable link between a published package and its source Additional security hardening is avai

Watch on YouTube About the show Sponsored by us! Support our work through: Our courses at Talk Python Training Test & Code Podcast 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. Brian #1: rye - Python workflow tool Armin Ronacher Rust built tool, currently only for Linux and MacOS Project workflow commands, like init - new project add - add a dependency (including optional) remove - remove a dependency build - build wheel lock - update lock file virtualenv commands add —dev - install in environment sync - install/update dependencies in env based on pyprojec.toml run - run command within environment Install Python fetch - Fetches a Python interpreter for the local machine Register existing Python toolchain Helper utility to manage Python toolchains Kin

Watch on YouTube Sponsored by us! Support our work through: Our courses at Talk Python Training Test & Code Podcast Patreon Supporters Connect with the hosts Michael: @mkennedy@fosstodon.org Brian: @brianokken@fosstodon.org Show: @pythonbytes@fosstodon.orgx 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. Michael #1: Introducing Microsoft Security Copilot Security Copilot combines this advanced large language model (LLM) with a security-specific model from Microsoft. When Security Copilot receives a prompt from a security professional, it uses the full power of the security-specific model to deploy skills and queries that maximize the value of the latest large language model capabilities. Your data and stays within your control. It is not used to train the foundation AI models, and in fact, it is protected by the most comprehensive enterprise compliance and security controls. Brian #2: PEP 695 – Type

Watch on YouTube About the show Sponsored by InfluxDB from Influxdata. 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. Brian #1: huak - A Python package manager written in Rust. Inspired by Cargo Suggested by Owen Tons of workflows activate - activate a virtual environment add add a dependency to a project pip install it into your virtual environment, and add it to the dependency list in pyproject.toml test - run pytest update update dependencies lint - run ruff, installing it first if necessary fix - autofix fixable lint conflicts build - build wheel in isolated virtual environment using hatchling Honestly I was considering building my own workflow tool, but this is darned close to what I want. Even though it’s still “in an experimental state”. There are rough edges (ruff edges, ge

Watch on YouTube About the show Sponsored by InfluxDB from Influxdata. 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. Michael #1: makeapp via Felix Ingram Simplifies Python application rollout and publishing. Link to its mention on Talk Python. Simplifies Python application rollout and publishing: Make a skeleton for your new application with one console command Automatically create a VCS repository for your application. Automatically check whether the chosen application name is not already in use. Customize new application layouts with skeleton templates. Put some skeleton default settings into a configuration file not to mess with command line switches anymore. Easily add entries to your changelog. Publish your application to remotes (VCS, PyPI) with single command. Brian #2: Look

Watch on YouTube About the show Sponsored by Influxdb 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. Brian #1: Pydantic V2 Pre Release Terrence Dorsey & Samuel Colvin Alpha release available to everyone: pip install --pre -U "pydantic>=2.0a1" Headlines: pydantic-core - all validation logic rewritten in Rust and moved to separate package, pytest-core 5-50x faster separation will aid safety and maintainability Lots ready for experimentation BaseModel, Dataclasses, Serialization, … Much still under construction Docs, BaseSettings→ pydantic-settings, … Michael #2: microdot The impossibly small web framework for Python and MicroPython Microdot is a minimalistic Python web framework inspired by Flask, and designed to run on systems with limited resources such as microcontro

Watch on YouTube About the show Sponsored by Microsoft for Startups Founders Hub. Michael #1: Prefix-cache via Brendan Hannigan You can set an environment variable or use it as a command line argument and then instead of creating tons of __pycache__ folders to store your *.pyc files right next to the source code, it puts them in some specified folder. Introduced in python 3.8. Brian #2: NiceGUI Suggested by several listeners Browser based GUI “NiceGUI is an easy-to-use, Python-based UI framework, which shows up in your web browser. You can create buttons, dialogs, Markdown, 3D scenes, plots and much more. It is great for micro web apps, dashboards, robotics projects, smart home solutions and similar use cases. You can also use it in development, for example when tweaking/configuring a machine learning algorithm or tuning motor controllers.” - from the README Michael #3: flask-ngrok A simple way to demo Flask apps from your machine. Makes your Flask apps running on localhost available over the