Python Bytes: #489 Or JSON?

Planet Python — 2026-07-21T08:00:00+00:00

Topics covered in this episode:

django-orjson
Best Django Redis configuration for speed and size
Linus Torvalds

Mike Driscoll: Python 101 3rd Edition Kickstarter Launch

Planet Python — 2026-07-14T13:05:15+00:00
Learn Python with a Book Designed for Beginners Hello! I’m Michael Driscoll, and I’m excited to announce the third edition of Python 101 . For years, Python 101 has helped readers take their first steps into programming. Whether you’re a complete beginner, a student, or someone looking to learn Python for work or personal projects, the goal has always been the same: make learning Python approachable, practical, and enjoyable. Python has continued to evolve, and it’s time for the book to evolve w

PyPodcats: Trailer: Episode 12 With Juanita Gomez

Planet Python — 2026-07-14T13:00:00+00:00
A preview of our chat with Juanita Gomez. Watch the full episode on July 17, 2026A preview of our chat with Juanita Gomez. Watch the full episode on July 17, 2026 Sneak Peek of our chat with Juanita Gomez, hosted by Cheuk Ting Ho and Mariatta Wijaya. Juanita is a Ph.D. candidate in Computer Science at UC Santa Cruz, where her research focuses on improving the security of scientific open source software. She is a former developer of the Spyder IDE, one of the community managers for the Scientific

When agents build agents: the loop

Pydantic — 2026-07-14T12:00:00+00:00
A harness arms one run; a loop is what you build when one run is not enough. How a loop of agents decomposes work, authors its own tools, and survives between runs.

Agent and LLM views in Pydantic Logfire

Pydantic — 2026-07-14T09:00:00+00:00
New Agents and LLMs views in Pydantic Logfire: per-agent run distributions with avg-vs-p90 tool-call charts, a Tools tab that reconstructs each run's config, and a per-provider-and-model inventory with latency, throughput, and open-source cost data.

Python Bytes: #488 tau - it's 2pi and it writes code

Planet Python — 2026-07-14T08:00:00+00:00
Topics covered in this episode:

The trusted-publishing debate: how to do it right vs. why you shouldn't trust it

PyCoder’s Weekly: Issue #742: Wagtail as Admin, Random Values, Code Quality, and More (2026-07-07)

Planet Python — 2026-07-07T19:30:00+00:00
#742 – JULY 7, 2026 View in Browser » Wagtail as Django Admin on Steroids Wagtail can do pretty much everything the Django Admin can do, but includes a much more modern UI and more features. This article shows you how to use Wagtail as an Admin alternative. TIM KAMANIN Selecting Random Values in Python Python’s random module provides utilities for generating pseudorandom numbers. For cryptographically-secure randomness, use the secrets module instead. TREY HUNNER Let AI Agents Into Your B2B App.

PyCharm: Best Object Detection Models for Machine Learning in 2026

Planet Python — 2026-07-07T17:51:48+00:00
Object detection powers transformative applications, from autonomous vehicles navigating city streets and security systems identifying threats in real time to retail analytics tracking inventory and medical imaging detecting tumors. But choosing the right model for your computer vision project can be challenging, especially with dozens of architectures claiming superiority across different metrics. In this guide, we’ll examine the top object detection models available in 2026, comparing their ar

Ari Lamstein: This Thursday: Building Data Apps with Streamlit and Copilot

Planet Python — 2026-07-07T16:00:39+00:00
On July 9 (9am–1pm Pacific) — this Thursday — I’ll be teaching a 4-hour live workshop for O’Reilly: Building Data Apps with Streamlit and Copilot. This is the second time I’ve run this workshop, and I’ve made several improvements based on what I learned the first time. If you work in Python and want to turn your analyses into interactive, shareable tools, this workshop is designed for you. We’ll start from a Jupyter notebook and build a complete Streamlit app that lets users explore a dataset th

Testing MCP Servers With a Python MCP Client

Real Python — 2026-07-07T14:00:00+00:00
Learn how to build a Python MCP client that tests MCP servers from your terminal. List their tools, prompts, and resources, then call each one.

Django Weblog: Django security releases issued: 6.0.7 and 5.2.16

Planet Python — 2026-07-07T14:00:00+00:00
In accordance with our security release policy , the Django team is issuing releases for Django 6.0.7 and Django 5.2.16 . These releases address the security issues detailed below. We encourage all users of Django to upgrade as soon as possible. CVE-2026-48588: Potential exposure of private data via cached Set-Cookie response django.middleware.cache.UpdateCacheMiddleware and django.views.decorators.cache.cache_page avoided caching responses that set a cookie while varying on Cookie only when the

Quiz: Testing MCP Servers With a Python MCP Client

Real Python — 2026-07-07T12:00:00+00:00
Build a command-line MCP client in Python, connect it to servers over stdio, and test their tools, prompts, and resources.

PyCon: Welcome, Kattni!

Planet Python — 2026-07-07T11:50:07+00:00
We are thrilled to welcome Kattni as the next Co-Chair and future Chair of PyCon US! You may already know Kattni from her work on CircuitPython and BeeWare, as a conference speaker, and as the Conference Chair of PyOhio since 2024. We are truly excited for what she will bring to PyCon US and its community over the next four years, and we can't wait to share that with you. In her own words: Hello, all! I'm Kattni, and I've been a Python community organiser for nearly a decade. I'm grateful to hav

Python Bytes: #487 Minimum requirements

Planet Python — 2026-07-07T08:00:00+00:00
Topics covered in this episode:

dust - a better du

Hermes Agent: The AI agent that grows with you

llm-coding-agent 0.1a0

Extras

The No Title® Tech Blog: Optimize Images X now supports WEBP and drag and drop

Planet Python — 2026-07-07T06:50:00+00:00
Optimize Images X, the multi-platform desktop application that helps you reduce the file size of your images on macOS, Windows and Linux, has just been updated to version 2.1.0. This new version adds drag-and-drop, conversion to more output formats, including WebP and AVIF , a new image info window with a readable EXIF report, and a PyInstaller spec file for building standalone executables.

Seth Michael Larson: Playing the “Second Quest” of Legend of Zelda: Four Swords Adventures

Planet Python — 2026-07-07T00:00:00+00:00
The Legend of Zelda: Four Swords Adventures (FSA) was released for the Nintendo GameCube in 2004 in Japan and America and 2005 globally. The game is split into eight areas with three levels per area. Data miners discovered that there were 8 levels that were cut late into development of the game that were all mostly playable. These cut levels can be seen on The Cutting Room Floor . In 2021 a game modding and localizing group named “ Eternal Dream Arabization ” and $$$Link created a mod for FSA wh

Python's JIT Faces Some Challenges and Other News for July 2026

Real Python — 2026-07-06T14:00:00+00:00
Python 3.15 picks up two more betas, the Steering Council puts CPython's JIT on a six-month clock, and the PSF confronts its finances.

Rodrigo Girão Serrão: Write a coding agent from first principles: better tools

Planet Python — 2026-07-06T13:00:00+00:00
Improve the capabilities of your agent by providing it with better tools. Introduction This tutorial builds on the coding agent you implemented in the tutorial “Write a coding agent from first principles” . In this tutorial, you'll take your agent and improve its capabilities by implementing the text edit and bash command tools that Anthropic provides. Why use Anthropic's tools? In the previous tutorial you implemented a coding agent that has a few tools that it can use to read, write, and execu

Seth Michael Larson: Mario Kart World and “seamless” media

Planet Python — 2026-07-06T00:00:00+00:00
Mario Kart World for the Nintendo Switch 2 adds a new unique game mechanic for the series where courses that neighbor each other in the sprawling world map can physically and thematically morph over a short transitionary “lap”. These course-connecting laps are commonly called Routes or “Intermission Tracks”. There are 202 routes connecting the 30 courses in Mario Kart World, some of which change depending on your direction between courses. This new mechanic enables what I consider the highlight

Christian Ledermann: Migrate From mypy To ty And pyrefly

Planet Python — 2026-07-05T16:29:47+00:00
I wanted to migrate one of my Python packages from mypy to ty and pyrefly . I handed this task over to Claude, and at the end I asked it to write out some guidance on how to perform it most efficiently. So what follows is AI-generated 'slop' . This guide is not about using fastkml . It documents how fastkml itself was migrated from mypy to Astral's ty and Meta's pyrefly , so the same playbook can be replayed on other codebases with less trial and error. Keep it here because the next migration (h

Sebastian Pölsterl: scikit-survival 0.28.0 released

Planet Python — 2026-07-05T16:22:05+00:00
I am pleased to announce the release of scikit-survival 0.28.0 . A highlight of this release is the support for Polars DataFrames alongside pandas DataFrames via the Narwhals dataframe abstraction layer. In addition, this release adds support for scikit-learn 1.9 . Support for Polars Polars is a data frame library similar to pandas , but with its core written in Rust instead of Python, which often gives Polars an advantage in terms of performance. All datasets shipped with scikit-survival can no

Core Dispatch: Core Dispatch #7

Planet Python — 2026-07-05T00:00:00+00:00
Welcome back to Core Dispatch! This edition covers June 19 through July 5, 2026. Python 3.15.0 beta 3 landed on June 23, and beta 4 is up next on July 18, with 3.13.15 and 3.14.7 following on August 4. Last edition, we covered the Steering Council's request that the experimental JIT chart its future through a Standards Track PEP. A new PEP has now been drafted and discussion has started: PEP 836 , "JIT Go Brrr: The Path to a Supported JIT Compiler for CPython," sketches what moving the JIT from

Bob Belderbos: One Core, Two Interfaces, No Rewrites

Planet Python — 2026-07-04T00:00:00+00:00
When building applications, I always build the core first, then the interfaces. It was no different with Ask the Canon : a uv run main.py ask "..." CLI for quick iteration and validation, then the web app for MVP. Search, ranking, citations, all using the same engine. Ask the Canon's core is a handful of pure functions in one module. Both interfaces are thin wrappers. This is the second post in a series on how it's built. The first one was about the retrieval engine. This one is about the wider

PyCon Ireland: Update on PyCon Ireland 2026: Venue Change and Extended CFP Deadline

Planet Python — 2026-07-04T00:00:00+00:00
Our booked venue, Trinity College Dublin , has informed us that it can no longer host the conference. This decision was made by the venue, and it means we can no longer confirm 17 October 2026 as our event date. We know this is disappointing, especially for everyone who was planning to submit a talk, book travel, or simply mark the date in their calendar. We’re disappointed too, but we want to be transparent with the community as soon as we have news, rather than staying quiet while we sort thin

Quiz: Python Interfaces: Object-Oriented Design Principles

Real Python — 2026-07-03T12:00:00+00:00
Check your understanding of Python interfaces, from informal interfaces and duck typing to formal interfaces built with the abc module.

The Real Python Podcast – Episode #301: Running Python Locally in a Sandbox

Real Python — 2026-07-03T12:00:00+00:00
How do you avoid the risk of running a Python application locally that could be malicious, break your code, or leak private data? How can you create a sandboxed local environment using WASM and MicroPython? Christopher Trudeau is back on the show this week with another batch of PyCoder's Weekly articles and projects.

cx_Freeze

PyDevTools — 2026-07-02T20:20:47+00:00
cx_Freeze is a Python application freezer that packages a Python program and its dependencies into a self-contained directory or executable. It targets Windows, macOS, and Linux from the same configuration and ships native commands for producing each platform’s preferred installer format. Recent releases add experimental support for freezing free-threaded CPython builds. Install it with uv tool install cx_Freeze or pipx install cx_Freeze . When to Use cx_Freeze cx_Freeze fits projects whose deli

Material for MkDocs: Documentation Theme and Framework

PyDevTools — 2026-07-02T20:20:40+00:00
Material for MkDocs is a theme and feature framework for MkDocs . Built by Martin Donath (squidfunk) , it layers Material Design styling, client-side search, dark mode, code annotations, and a wide configuration surface on top of the base MkDocs build pipeline. Note

Flit: Python Build and Publish Tool

PyDevTools — 2026-07-02T20:20:40+00:00
Flit is a Python packaging tool for building and publishing pure-Python packages. It provides a CLI for scaffolding ( flit init ), local installation ( flit install ), and PyPI publishing ( flit publish ). Its build backend, flit-core, ships as a separate package with zero runtime dependencies and can be used independently of the flit CLI. Flit does not manage virtual environments or resolve dependencies; those are handled by separate tools such as uv . When to use Flit Flit suits pure-Python li

build: Python Package Build Frontend

PyDevTools — 2026-07-02T20:20:31+00:00
build is a PEP 517-compliant Python package builder developed by the Python Packaging Authority (PyPA) . It provides a standardized interface for building Python packages using any compliant build backend , serving as a simple frontend tool that executes the build process defined by backends like setuptools , flit , or hatchling . Core Functionality Build Operations Source Distributions: Creates sdist packages containing source code Binary Distributions: Builds wheel packages for direct installa

Thinking about running for the PSF Board? Let’s talk!

PSF Blog — 2026-07-02T13:07:22.425000+00:00
PSF Board elections are a chance for the community to choose representatives to help the PSF create a vision for and build the future of the Python community. This year, there are 4 seats open on the PSF Board. Check out who is currently on the PSF Board on our website . (Cheuk Ting Ho, Christopher Neugebauer, Denny Perez, and Georgi Ker are at the end of their current terms.) Office Hours Information This year, the PSF Board is dedicating a few of their regular Office Hour sessions on the PSF D

Quiz: Natural Language Processing With Python's NLTK Package

Real Python — 2026-07-02T12:00:00+00:00
Test your understanding of natural language processing with Python's NLTK, from tokenizing and stemming to tagging, chunking, and analyzing text.

Observability MCP comparison: Pydantic Logfire, ClickStack, LangSmith, Braintrust, Galileo, Phoenix, and Langfuse

Pydantic — 2026-07-02T00:00:00+00:00
We tested observability MCPs, CLIs, SDKs, and APIs across Pydantic Logfire, ClickStack, LangSmith, Braintrust, Galileo, Arize Phoenix, and Langfuse to see which tools help AI agents answer debugging questions with the least reconstruction.

PEP 836: JIT Go Brrr: The Path to a Supported JIT Compiler for CPython

PEPs — 2026-07-02T00:00:00+00:00
The experimental Just-in-Time (JIT) compiler has been part of CPython’s main branch since Python 3.13. PEP 744 described part of its initial design and explicitly deferred a number of questions about the JIT’s long-term status. Since then, the JIT has been re-architected and matured considerably. In Python 3.15, it delivers a measurable, reproducible speedup over the interpreter (about 4-12% geometric mean performance improvement across measured Tier 1 platforms; see Appendix), emits frames that

Python 3.15 Preview: Upgraded JIT Compiler

Real Python — 2026-07-01T14:00:00+00:00
Learn how the upgraded Python 3.15 JIT compiler speeds up your code with a new tracing frontend, register allocation, and in-place numeric operations.

Quiz: Python 3.15 Preview: Upgraded JIT Compiler

Real Python — 2026-07-01T12:00:00+00:00
Check your understanding of the Python 3.15 JIT compiler, from enabling and benchmarking it to the optimizer upgrades that make your code faster.

Python install manager 26.3

Python.org Downloads — 2026-06-30T16:40:57+00:00
Release date: 2026-06-30 16:40:57+00:00

Managing and Measuring Python Code Quality

Real Python — 2026-06-30T14:00:00+00:00
Master Python code quality tools like linters, formatters, type checkers, and profilers to measure, manage, and improve the code you write.

Quiz: Managing and Measuring Python Code Quality

Real Python — 2026-06-30T12:00:00+00:00
Test your understanding of what makes Python code functional, readable, efficient, and reusable, plus the tools that measure code quality.

Dispatches from the hallway track: what developers are actually talking about at conferences

Pydantic — 2026-06-30T09:00:00+00:00
PyCon DE, PyCon Italia, and PyData London 2026 from the corridor: agents at 19% of sessions and rising, beginner content dropping sharply, RAG graduating quietly to infrastructure. On the loop-more orthodoxy, long planning smells, and why it's okay to be tired and cynical right now.

Some Customers Can't Use Your Cloud. Now What?

Pydantic — 2026-06-29T19:00:00+00:00
What we learned building the self-hosted Logfire Helm chart: why the support surface is harder than the build, and what we did about it — sizing presets, env var drift, and instance admin APIs.

Python Packaging Council Inaugural Election Dates

PSF Blog — 2026-06-29T17:58:01.503000+00:00
With the recent approval of PEP 772 – Packaging Council governance process , a new Python Packaging Council (PPC) is being established with broad authority over packaging specifications and the mandate to coordinate Python packaging efforts. The election of the inaugural PPC will be held in parallel to the 2026 Python Software Foundation (PSF) Board election. What is the Python Packaging Council? The PPC will be the technical decision making body for the interoperability specifications affecting

How to Get Started With the GitHub Copilot CLI

Real Python — 2026-06-29T14:00:00+00:00
Learn how to install, authenticate, and use the GitHub Copilot CLI to plan, write, and review Python code from your terminal with AI agents.

Quiz: How to Get Started With the GitHub Copilot CLI

Real Python — 2026-06-29T12:00:00+00:00
Test your understanding of the GitHub Copilot CLI, from installing it to running prompts, switching agent modes, and reviewing code in your terminal.

Packaging Council Inaugural Election Dates

Python Insider — 2026-06-28T00:00:00+00:00
A new Python Packaging Council (PPC) is being established, with their election of the inaugural PPC will be held in parallel to the 2026 PSF Board election.

Black: Python Code Formatter

PyDevTools — 2026-06-27T11:06:27+00:00
Black is an opinionated Python code formatter that rewrites source files to conform to a strict subset of PEP 8 . It exposes few configuration options by design, so teams converge on one canonical style instead of debating formatting choices. To sort imports alongside Black, most projects pair it with isort (or use Ruff , which bundles both). When to use Black Black fits codebases that already run it in CI or pre-commit hooks and have built workflows around its stable output. Its formatting has

conda-pypi

PyDevTools — 2026-06-27T11:04:21+00:00
conda-pypi is a conda plugin that installs PyPI packages into a conda environment by converting their sdists or wheels into the .conda format at install time. The conda solver tracks every package the plugin installs, which closes the long-standing gap where pip -installed packages were invisible to conda and the two views of the environment would drift apart. As of conda 26.5.3, the conda-pypi channel integrates with the standard conda install command, enabling a single solve across conda-forge

distutils: Python's Original Build System

PyDevTools — 2026-06-26T21:55:31+00:00
distutils was a standard library module that provided the original mechanism for building and distributing Python packages. It defined the setup.py -based workflow that became the foundation of Python packaging for over two decades. What It Did distutils handled package building, installation, and distribution through a setup.py script: from distutils.core import setup setup ( name = "example" , version = "1.0" , py_modules = [ "example" ], ) Running python setup.py install would copy modules in

Briefcase

PyDevTools — 2026-06-26T21:55:31+00:00
Briefcase is the only mainstream Python packaging tool that ships to iOS and Android. It also packages applications for macOS, Windows, Linux, and the Web, producing platform-specific artifacts ( .app /DMG, MSI, .deb / .rpm /AppImage/Flatpak, Xcode project, Gradle project, PyScript/Pyodide site) from a single pyproject.toml configuration. Briefcase is part of the BeeWare project and is the packaging companion to Toga , BeeWare’s cross-platform GUI toolkit. Briefcase does not require Toga; it pac

The Real Python Podcast – Episode #300: Maintaining Your Python Developer Instincts While Using LLM Tools

Real Python — 2026-06-26T12:00:00+00:00
Do you feel like your Python skills are atrophying after using LLM coding tools? How do you add the right kind of friction into your coding routine to keep your developer instincts sharp? Christopher Trudeau is back on the show this week with another batch of PyCoder's Weekly articles and projects.

What makes a good agent harness

Pydantic — 2026-06-26T11:30:00+00:00
What makes an agent harness good is timing: surfacing the right context and corrections to the model at the right moment, with capabilities, code mode, and just-in-time tools. Plus why the loop comes next.

Applied generative AI maturity model for senior leaders

Pydantic — 2026-06-25T09:00:00+00:00
A five-level, five-dimension maturity model for applied generative AI, built for CTOs and VPs of Engineering. Find the gap that's bleeding and close it first.

conda-forge: Community Conda Package Channel

PyDevTools — 2026-06-24T17:34:36+00:00
conda-forge is a community-maintained collection of conda packages distributed through a public channel on anaconda.org . Over 25,000 feedstocks (package repositories) produce builds for Linux, macOS, and Windows across multiple CPU architectures. Each feedstock contains a build recipe in its own GitHub repository, and automated infrastructure rebuilds packages when dependencies change or new platforms appear. Note

Django Tasks: Exploring the Built-in Tasks Framework

Real Python — 2026-06-24T14:00:00+00:00
Explore Django Tasks, the new built-in framework in Django 6.0, and run background jobs with @task, named queues, and a lightweight alternative to Celery.

Quiz: Django Tasks: Exploring the Built-in Tasks Framework

Real Python — 2026-06-24T12:00:00+00:00
Practice using Django Tasks in Django 6.0 to run background jobs with the @task decorator, enqueue work, check task results, and use named queues.

Full-stack AI agent template with Pydantic AI and Logfire

Pydantic — 2026-06-24T09:00:00+00:00
Skip months of scaffolding. This open-source template ships FastAPI, Next.js 15, Pydantic AI agents, streaming, auth, and Logfire observability in one command.

Hatch: Python Project Manager

PyDevTools — 2026-06-23T14:06:05+00:00
hatch is a Python project management tool maintained by the Python Packaging Authority (PyPA). It handles virtual environment management, dependency resolution, project scaffolding, and publishing through a unified interface that follows Python packaging standards. Its build backend, hatchling, is one of the most widely used on PyPI. When to Use Hatch Hatch suits library authors who want a single, standards-compliant tool covering scaffolding, building, publishing, and multi-version testing. Its

Using LlamaIndex for RAG in Python

Real Python — 2026-06-23T14:00:00+00:00
Learn how to set up LlamaIndex, load your data, build and persist an index, and run queries to get grounded answers with RAG in Python.

Python 3.15.0b3

Python.org Downloads — 2026-06-23T13:25:25+00:00
Release date: 2026-06-23 13:25:25+00:00

Quiz: Using LlamaIndex for RAG in Python

Real Python — 2026-06-23T12:00:00+00:00
Test your understanding of RAG in Python with LlamaIndex by loading data, building and persisting an index, and querying an LLM for grounded answers.

Pydantic AI v2: capabilities, a leaner core, and the Harness

Pydantic — 2026-06-23T09:00:00+00:00
Pydantic AI v2 is here: one capability primitive for instructions, tools, hooks, and settings, a slimmer core, and the Pydantic AI Harness.

pdb: Python's Built-in Debugger

PyDevTools — 2026-06-23T02:36:07+00:00
pdb is Python’s interactive source debugger, distributed as a module in the standard library. It supports setting breakpoints, single-stepping at the source-line level, inspecting and modifying variables in any stack frame, and post-mortem analysis of an unhandled exception. The interface is line-oriented and runs in any terminal with no external dependencies. When to use pdb Use pdb when a problem can be reproduced locally and adding a print statement is not enough. Drop a breakpoint() call at

Cookiecutter: Python Project Template Tool

PyDevTools — 2026-06-23T02:36:07+00:00
Cookiecutter is a cross-platform command-line utility that creates projects from templates. It generates project structures by copying template directories and replacing templated variables with user-provided values, supporting any programming language or markup format. Core Functionality Template Processing Copies source directory trees and replaces names surrounded by templating tags {{ }} with values from cookiecutter.json Supports variable replacement in file names, directory names, and file

Conda Package

PyDevTools — 2026-06-23T02:36:07+00:00
A conda package is a compressed archive containing pre-built binaries, library code, metadata, and dependency information for installation through conda channels. It serves the same role in the conda ecosystem that a wheel serves on PyPI , with one critical difference: conda packages can bundle software from any language (Python, R, C++, Fortran, Julia), not just Python. Package Formats The conda ecosystem recognizes two archive formats, referred to as v1 and v2.

Anaconda: Python and R Data Science Platform

PyDevTools — 2026-06-23T02:36:07+00:00
Anaconda Distribution is a pre-packaged Python and R data science platform maintained by Anaconda, Inc. It bundles the conda package manager, a Python interpreter, and over 1,500 scientific computing libraries into a single installer. The current release, Anaconda Distribution 2025.12, ships with Python 3.13.9 and conda 25.11.0. Warning

Python 3.15.0 beta 3 is here!

Python Insider — 2026-06-23T00:00:00+00:00
The penultimate 3.15 beta is out!

Mitigated API authentication bypass for python.org download metadata

Python Insider — 2026-06-23T00:00:00+00:00
Vulnerability mitigated in python.org with follow-up third-party audit from Trail of Bits

Python for Data Analysis: A Practical Guide

Real Python — 2026-06-22T14:00:00+00:00
In this tutorial, you'll learn data analysis with Python by following a structured workflow with pandas, Matplotlib, and scikit-learn.

PDM: Python Package and Dependency Manager

PyDevTools — 2026-06-19T20:53:25+00:00
PDM is a Python package and dependency manager that implements the modern PEP 517/518 build-system interface and reads PEP 621 project metadata from pyproject.toml . When to use PDM Use PDM when you have an existing project built around its workflow and want a standards-compliant package manager with lockfile support and dependency groups. PDM’s strict adherence to the PEP 517/518 build-system interface and PEP 621 project metadata makes it a good fit for teams that prioritize alignment with off

Homebrew: macOS Package Manager for Python

PyDevTools — 2026-06-19T11:56:54+00:00
Homebrew is a package manager for macOS and Linux that installs software outside the operating system’s own package manager, without requiring root access. It manages its own dependency tree, handles updates, and exposes installed binaries on PATH . Homebrew can install Python, but using it as a Python version manager for development is not recommended . Homebrew updates can silently change Python versions, breaking project environments. Use uv python install or pyenv for version management. Key

PSF Board Election Dates for 2026

PSF Blog — 2026-06-18T12:15:20.549000+00:00
Python Software Foundation (PSF) Board elections are a chance for the community to choose representatives to help the PSF create a vision for and build the future of the Python community. This year, there are 4 seats open on the PSF Board. Check out who is currently on the PSF Board on our website . (Cheuk Ting Ho, Christopher Neugebauer, Denny Perez, and Georgi Ker are at the end of their current terms.) The recent approval of the Packaging Council (PPC) through PEP 772 means that the PPC elect

cibuildwheel: Cross-Platform Python Wheel Builder

PyDevTools — 2026-06-18T11:25:09+00:00
cibuildwheel is a CI tool that builds Python wheels for multiple platforms, architectures, and Python versions from a single configuration. It runs on CI servers (GitHub Actions, GitLab CI, Azure Pipelines, CircleCI, and Cirrus CI), automating the work of compiling C/C++/Rust/Cython extensions and producing manylinux /musllinux-compliant wheels. Note

nox: Python Test Automation Tool

PyDevTools — 2026-06-18T11:24:57+00:00
nox manages Python virtual environments and runs tests across multiple Python versions and configurations. Where tox uses declarative TOML or INI configuration, nox uses Python code in a noxfile.py , which makes it straightforward to express conditionals, loops, and dynamic session generation. Hatch offers a third approach with its environment matrix system configured in pyproject.toml . When to Use nox nox solves the problem of running test suites, linters, and other checks across multiple Pyth

direnv: Per-Directory Environment Variables for Python

PyDevTools — 2026-06-18T11:24:57+00:00
direnv is a shell extension that loads and unloads environment variables based on the current working directory. It reads a per-directory .envrc file when entering a folder and reverts the environment when leaving. Although direnv is language-agnostic, it is widely used in Python projects to activate virtual environments and export project-specific settings without polluting the global shell. Key Features Loads variables from .envrc on cd into a directory and unloads them on cd out Provides a st

Context Engineering for Python Codebases

Real Python — 2026-06-17T14:00:00+00:00
Learn how context engineering shapes what your AI coding agent sees on every turn, and use four practical strategies to keep your Python projects on track.

Everything Security at PyCon US 2026

PSF Blog — 2026-06-17T13:55:10.667000+00:00
Phew, PyCon US 2026 is a wrap! Now it's time to share about everything security that happened in case you weren't able to attend (or you just want to reminisce). Subscribe to the PyCon US channel on YouTube so you're notified as soon as recordings for each talk are published. This blog post will also be updated with links once all talks are available. PyCon US Security Track Hala Ali on generating SBOMs directly from the Python runtime Juanita Gomez and Seth Larson were the chairs of the first t

Building Python Skills for the Job Market

Real Python — 2026-06-16T14:00:00+00:00
Learn which Python skills employers value most and how to build them, using a skill roadmap worksheet, weekly practice plan, and interview prep tips.

Implementing Interfaces in Python: ABCs and Protocols

Real Python — 2026-06-15T14:00:00+00:00
Learn how to implement interfaces in Python using abstract base classes, Protocols, and duck typing, and enforce method contracts cleanly.

IPython: Enhanced Python Interactive Shell

PyDevTools — 2026-06-15T13:13:31+00:00
IPython is an enhanced interactive Python interpreter that provides a powerful command-line interface with advanced features like syntax highlighting, tab completion, magic commands, and rich display capabilities. It serves as the computational kernel for Jupyter notebooks. Core Features Enhanced Interactive Shell Syntax Highlighting: Real-time code coloring for better readability Tab Completion: Intelligent autocompletion for objects, methods, and file paths History Management: Persistent comma

v4.1.0

cibuildwheel — 2026-06-12T16:03:06+00:00
✨ Updates Pyodide to the final 314.0.0 release, so Pyodide 3.14 wheels now build by default without the pyodide-prerelease enable flag. ( #2906 ) 🐛 Raises clear errors when a build produces no wheel, instead of failing later with a confusing message ( #2909 ) 🛠 Speeds up CLI startup through lazy imports on Python 3.15 ( #2797 ) 📚 Adds an FAQ section on caching cibuildwheel's downloaded tools with CIBW_CACHE_PATH ( #2842 ) 📚 Documentation improvements: clarifies which shell is used for command op

v4.1

cibuildwheel — 2026-06-12T16:02:23+00:00
v4.1.0

The Real Python Podcast – Episode #299: EuroPython 2026: Celebrating 25 Years

Real Python — 2026-06-12T12:00:00+00:00
What's happening at EuroPython 2026? The conference celebrates its 25th anniversary this year in Kraków, Poland. This week on the show, organizers Mia Bajić and Daria Linhart Grudzien join me to discuss this year's conference.

PEP 835: Shorthand syntax for Annotated type metadata

PEPs — 2026-06-12T00:00:00+00:00
This proposal introduces a shorthand syntax for typing.Annotated using the @ operator. This change reduces verbosity for type annotations with metadata, benefiting libraries like Pydantic, FastAPI, Typer, and SQLModel.

Python 3.13.14

Python.org Downloads — 2026-06-10T16:00:00+00:00
Release date: 2026-06-10 16:00:00+00:00

Cursor vs Windsurf: Which AI Code Editor Is Best for Python?

Real Python — 2026-06-10T14:00:00+00:00
Compare Cursor vs Windsurf for Python across code completion, multi-file editing, and debugging to choose the right editor for your workflow.

Python 3.14.6

Python.org Downloads — 2026-06-10T13:13:18+00:00
Release date: 2026-06-10 13:13:18+00:00

Python 3.14.6 and 3.13.14 are now available!

Python Insider — 2026-06-10T00:00:00+00:00
A pair of bug fix releases await your upgrade.

Accessing Multiple AI Models With the OpenRouter API

Real Python — 2026-06-09T14:00:00+00:00
Access models from popular AI providers in Python through OpenRouter's unified API with smart routing, fallbacks, and cost controls.

Python 3.15 Hits Feature Freeze and Other News for June 2026

Real Python — 2026-06-08T14:00:00+00:00
Python 3.15 hits feature freeze with a built-in sentinel, PEP 829 lands, Pydantic forks httpx, and AI goes bug-hunting in C code.

v4.0.0

cibuildwheel — 2026-06-07T19:24:15+00:00
See @henryiii 's release post for more info on new features! 🌟 Adds wheel auditing with abi3audit as a default after the repair step, with new audit-requires and audit-command options ( #2805 ) 🌟 Adds pyemscripten platform tag support (PEP 783), updates Pyodide to 314.0.0a2, and adds a pyodide-eol enable flag for building end-of-life Pyodide versions ( #2812 , #2848 ) 🌟 Sets up delvewheel as the default repair-wheel-command for Windows, so extension module DLLs are now bundled automatically. Ski

v4.0

cibuildwheel — 2026-06-07T18:53:57+00:00
Bump version: v4.0.0

Conda

PyDevTools — 2026-06-06T12:35:46+00:00
Conda is a language-agnostic, cross-platform package and environment manager. Where pip installs Python packages from PyPI , conda resolves dependencies across Python, R, C/C++, Fortran, and other languages in a single dependency graph. The current stable release is 26.3.1 (March 2026). Note

v4.0.0rc2

cibuildwheel — 2026-06-05T13:29:48+00:00
✨ Adds CPython 3.15 support for iOS and Android ( #2857 , #2858 ) ✨ Adds Android improvements for building NumPy and related packages, including auditwheel support, pkg-config and Fortran configuration, and the xbuild-files option ( #2695 ) ✨ Adds CIBUILDWHEEL_BUILD_IDENTIFIER environment variable set to the current build identifier (e.g. cp311-manylinux_x86_64 ) during per-build steps ( #2872 ) 🔐 Adds SHA256 verification for direct downloads of Python interpreters, virtualenv, and python-build-

The Real Python Podcast – Episode #298: Reducing the Size of Python Docker Containers

Real Python — 2026-06-05T12:00:00+00:00
How can you easily reduce the size of a Python Docker container? What are the exceptions you should catch in your code? Christopher Trudeau is back on the show this week with another batch of PyCoder's Weekly articles and projects.

PSF Strategic Plan 2026 Draft: Open for Community Feedback

PSF Blog — 2026-06-04T13:38:17.366000+00:00
In May, we shared the high-level goals of the Python Software Foundation's (PSF) strategic plan and asked for your commentary. Today we are publishing the full draft and opening a three-week community feedback window. We welcome you to review the full PSF Strategic Plan Community Draft 2026 document , also embedded below. The feedback window closes on June 25, 2026, End Of Day, Anywhere on Earth . The PSF Board will carefully review all input, use it to refine the final version of the strategic

MkDocs: Markdown Documentation for Python Projects

PyDevTools — 2026-06-03T06:50:43+00:00
MkDocs is a static site generator that builds documentation websites from Markdown source files. A project’s structure, navigation, theme, and plugins are declared in a single mkdocs.yml file at the repo root. Note

Python 3.15.0b2

Python.org Downloads — 2026-06-02T17:32:11+00:00
Release date: 2026-06-02 17:32:11+00:00

Structuring Your Python Script

Real Python — 2026-06-02T14:00:00+00:00
Master Python script structure with best practices for shebangs, ordered imports, formatting with Ruff, constants, and a clean entry point.

No Starch Press Humble Bundle: Grab a Deal and Support the PSF!

PSF Blog — 2026-06-02T11:21:16.830000+00:00
Curious about leveling up your Python skills, or just getting your feet wet? Pick up a whole set of solid Python books at a great price and support the Python Software Foundation (PSF) at the same time! No Starch Press , an indie tech-book publisher and long time supporter of the PSF, just announced a new Python-themed Humble Bundle. Grab ‘ Python: The Good Stuff by No Starch ’ and pay what you want for all-Python DRM-free ebook titles for Python beginners to pros. And a share of the proceeds fr

Python 3.15.0 beta 2 is here!

Python Insider — 2026-06-02T00:00:00+00:00
The antepenultimate 3.15 beta is out!

26.1.2

pip — 2026-05-31T17:16:13+00:00
Release 26.1.2

The Real Python Podcast – Episode #297: Improving Python Through PEPs and Protocols

Real Python — 2026-05-29T12:00:00+00:00
Have you ever been confused by the naming of modules you're importing from a package? Is there a standard way to organize and name your Python virtual environments? This week on the show, Brett Cannon returns to discuss the Python Enhancement Proposals (PEPs) he's been working on recently.

Connecting LLMs to Your Data With Python MCP Servers

Real Python — 2026-05-26T14:00:00+00:00
Build an MCP server in Python that exposes tools, resources, and prompts so AI agents like Cursor can interact with your data.

The Real Python Podcast – Episode #296: Managing Polars Schema Issues & Profiling GitHub Users

Real Python — 2026-05-22T12:00:00+00:00
How can you avoid schema problems in your Polars data pipeline when adding new columns? How can you quickly examine a GitHub user's profile to decide how much to invest in their contributions? Christopher Trudeau is back on the show this week with another batch of PyCoder's Weekly articles and projects.

flake8: Python Linter

PyDevTools — 2026-05-22T11:38:18+00:00
Flake8 is a Python linting tool that wraps three checkers into one CLI: PyFlakes for logical errors, pycodestyle for PEP 8 style, and mccabe for cyclomatic complexity. A plugin system extends it with additional rules. Ruff reimplements flake8’s entire rule set with autofix support and 10-100x faster runs. Consider Ruff for new projects. When to use flake8 Flake8 fits codebases that already run it in CI and have tuned a stable configuration across setup.cfg , tox.ini , or .flake8 . Teams that dep

Tapping Into the Zen of Python

Real Python — 2026-05-19T14:00:00+00:00
Explore the Zen of Python and its 19 guiding principles for writing readable, practical code. Learn its history, jokes, and meaning.

The Real Python Podcast – Episode #295: Agentic Architecture: Why Files Aren't Always Enough

Real Python — 2026-05-15T12:00:00+00:00
What are the limitations of using a file-based agent workflow? Why do massive context windows tend to collapse? This week on the show, Mikiko Bazeley from MongoDB joins us to discuss agentic architecture and context engineering.

v4.0.0rc1

cibuildwheel — 2026-05-14T15:59:32+00:00
🌟 Adds wheel auditing with abi3audit as a default after the repair step, with new audit-requires and audit-command options ( #2805 ) 🌟 Adds pyemscripten platform tag support (PEP 783), updates Pyodide to 314.0.0a1, and adds a pyodide-eol enable flag for building end-of-life Pyodide versions ( #2812 , #2848 ) 🌟 Sets up delvewheel as the default repair-wheel-command for Windows, so extension module DLLs are now bundled automatically. Skip by setting it to empty if not needed. ( #2831 ) ✨ Adds CPyt

PSF Welcomes Hudson River Trading (HRT) as a Visionary Sponsor

PSF Blog — 2026-05-13T21:19:47.434000+00:00
[May 13, 2026] – The Python Software Foundation (PSF) is excited to announce that Hudson River Trading (HRT), a global leader in quantitative trading, has made a commitment to support Python and the PSF as a Visionary Sponsor. HRT’s "Visionary" sponsorship—our highest tier—will help to support the foundation’s core work of advancing and protecting the Python programming language and supporting a diverse and international community of Python programmers. HRT is the first quantitative trading firm

Announcing PSF Community Service Award Recipients!

PSF Blog — 2026-05-12T15:55:00+00:00
The PSF Community Service Awards (CSAs) are a formal way for the PSF Board of Directors to offer recognition of work which, in its opinion, significantly improves the Foundation's fulfillment of its mission to build a vibrant, welcoming, global Python community. These awards shine a light on the incredible people who are the heart and soul of our community– those whose dedication, creativity, and generosity help the PSF fulfill its mission. The PSF CSAs celebrate individuals who have been truly

Building Type-Safe LLM Agents With Pydantic AI

Real Python — 2026-05-12T14:00:00+00:00
Build type-safe LLM agents in Python with Pydantic AI using structured outputs, function calling, and dependency injection.

Python install manager 26.2

Python.org Downloads — 2026-05-11T21:33:48+00:00
Release date: 2026-05-11 21:33:48+00:00

Strategic Planning at the PSF

PSF Blog — 2026-05-11T10:40:00.001000+00:00
The Python Software Foundation (PSF) is excited to share that the PSF Board has been developing a strategic plan to guide the foundation's direction over the next five years. We are sharing the high-level goals today to collect feedback and commentary from the Python community. A full draft with detailed objectives will be published in early June for public feedback, and the board hopes to adopt the plan in July 2026, to be reviewed annually going forward. Why now The Python ecosystem is growing

Python 3.14.5

Python.org Downloads — 2026-05-10T12:24:58+00:00
Release date: 2026-05-10 12:24:58+00:00

Python 3.14.5 is out!

Python Insider — 2026-05-10T00:00:00+00:00
A special release with a new (old) garbage collector.

The Real Python Podcast – Episode #294: Declarative Charts in Python & Discerning Iterators vs Iterables

Real Python — 2026-05-08T12:00:00+00:00
What if you could build charts in Python by describing what your data means, instead of scripting every visual detail? Christopher Trudeau is back on the show this week with another batch of PyCoder's Weekly articles and projects.

Python 3.15.0b1

Python.org Downloads — 2026-05-07T15:45:57+00:00
Release date: 2026-05-07 15:45:57+00:00

Python 3.15.0 beta 1 is here!

Python Insider — 2026-05-07T00:00:00+00:00
The propreantepenultimate 3.15 beta is out!

Use Codex CLI to Enhance Your Python Projects

Real Python — 2026-05-05T14:00:00+00:00
Learn how to use Codex CLI to add features to Python projects directly from your terminal, without needing a browser or IDE plugins.

Python 3.14.5rc1

Python.org Downloads — 2026-05-04T19:57:10+00:00
Release date: 2026-05-04 19:57:10+00:00

26.1.1

pip — 2026-05-04T18:56:10+00:00
Release 26.1.1

Python 3.14.5 release candidate

Python Insider — 2026-05-04T00:00:00+00:00
A special release candidate with a new (old) garbage collector.

The Real Python Podcast – Episode #293: Agentic Data Science Pair Programming With marimo pair

Real Python — 2026-05-01T12:00:00+00:00
How do you add agent skills to your data science workflow? How can a coding agent assist with data wrangling and research? This week on the show, Trevor Manz from marimo joins us to discuss marimo pair.

1.5.0

build (pypa) — 2026-04-30T03:18:02+00:00
What's Changed ci: try to improve release docs by @henryiii in #1051 feat: drop 3.9, require 3.10+ by @henryiii in #1036 chore: tox toml by @henryiii in #1033 fix: api should not ignore installed, only CLI by @henryiii in #1056 Full Changelog : 1.4.4...1.5.0

mkdocstrings: Autogenerate API Documentation in MkDocs

PyDevTools — 2026-04-29T18:33:02+00:00
mkdocstrings is a MkDocs plugin that generates API documentation from source code and injects it directly into Markdown pages. The base plugin is language-agnostic; concrete language support ships as separate handler packages. Note

Furo: Sphinx Documentation Theme

PyDevTools — 2026-04-29T18:33:02+00:00
Furo is a Sphinx theme written by Pradyun Gedam . It is a clean, customisable replacement for Sphinx’s default alabaster theme, with built-in light and dark modes, a responsive layout, and a focused sidebar. Note

Nuitka

PyDevTools — 2026-04-29T01:54:51+00:00
Nuitka is a Python-to-C compiler that translates CPython bytecode into C source, then compiles and links the result against libpython . The output runs without a separate Python installation and can ship as a standalone folder, a self-extracting single-file executable, or an importable extension module. Nuitka runs on Linux, macOS, and Windows; the build machine needs a C toolchain ( gcc , clang , or MSVC). Install it with uv tool install nuitka or pipx install nuitka . Nuitka is AGPL-3.0+ with

26.1

pip — 2026-04-26T17:39:36+00:00
Release 26.1

Announcing Python Software Foundation Fellow Members for Q1 2026! 🎉

PSF Blog — 2026-04-23T11:07:00.003000+00:00
The PSF is pleased to announce its first batch of PSF Fellows for 2026 . Let us welcome the new PSF Fellows for Q1 ! The following people continue to do amazing things for the Python community: Bill Deegan Website , LinkedIn , GitHub , X El-karece Asiedu LinkedIn (James) Kanin Kearpimy Linktree Jonas Obrist Kristen McIntyre Lucie Anglade Website Phebe Polk Philippe Gagnon Sarah Kuchinsky Mastodon , Bluesky Simon Charette LinkedIn , GitHub Sony Valdez Website , GitHub Stan Ulbrych GitHub , Mastod

1.4.4

build (pypa) — 2026-04-22T20:53:28+00:00
What's Changed 🐛 fix(release): generate consistent CHANGELOG heading levels by @gaborbernat in #1032 docs: move source links by @henryiii in #1034 revert: drop PEP 660 change by @henryiii in #1039 fix: ignore installed when running pip by @henryiii in #1040 fix: revert part of #973 by @henryiii in #1044 chore: report coverage failure lines by @henryiii in #1046 tests: fix issue with uv run by @henryiii in #1048 docs: reorganize testing docs for copy/paste by @abitrolly in #1043 tests: keep envir

PEP 833: Freezing the HTML simple repository API

PEPs — 2026-04-21T00:00:00+00:00
This PEP proposes freezing the standard HTML representation of the simple repository API, as originally specified in PEP 503 and updated over subsequent PEPs.

PyPI has completed its second audit

PyPI Blog — 2026-04-16T14:00:00+00:00
In 2023 PyPI completed its first security audit , and I am proud to announce that we have now completed our second external security audit. This work was funded by the Sovereign Tech Agency , a supporter of Open Source security-related improvements, partnering with Trail of Bits to perform the audit. Thanks to ongoing support from Alpha-Omega , my role at the PSF enabled me to focus on rapid remediation of the findings. This time around, there's no three-part series, as the scope was narrower, f

PyCon US 2026: Why we're asking you to think about your hotel reservation

PSF Blog — 2026-04-14T14:13:00+00:00
The PyCon US 2026 team has already covered some of the fun, unexpected, and meaningful reasons you’ll want to stay in the PyCon US hotel block. The PSF wants to use our blog to give a different angle, to keep being transparent with you, and share a little bit of real talk on the economics of holding a conference in the US at this moment in time. The short version is, if you’re joining us in Long Beach, please book the official PyCon US hotels through your PyCon US 2026 dashboard, because booking

Reflecting on Five Years as the PSF’s First CPython Developer in Residence

PSF Blog — 2026-04-13T18:01:00+00:00
After nearly five wonderful years at the Python Software Foundation as the inaugural CPython Developer in Residence, it's time for me to move on. I feel honored and honestly so lucky to have had the opportunity to kick off the program that now includes several wonderful full-time engineers. I'm glad to see the program left in good hands. The vacancy created by my departure will be filled after PyCon US as the PSF is currently focused on delivering a strong event. I'm happy to share that Meta wil

1.4.3

build (pypa) — 2026-04-10T21:25:27+00:00
What's Changed 🐛 fix(api): resolve thread-safety races in build API by @gaborbernat in #1015 🐛 fix(builder): validate backend-path entries exist on disk by @gaborbernat in #1016 test: cover config settings build paths by @terminalchai in #992 Add kind=(step, ) for root messages with * by @abitrolly in #973 fix: correct changelog category ordering by @gaborbernat in #1017 🐛 fix(cli): show full dependency chain in missing deps error by @gaborbernat in #1019 tests: fully annotate by @henryiii in #1

Rust for CPython Progress Update April 2026

Python Insider — 2026-04-08T00:00:00+00:00
Rust for CPython project status update April 2026

Python 3.13.13

Python.org Downloads — 2026-04-07T18:20:00+00:00
Release date: 2026-04-07 18:20:00+00:00

Python 3.15.0a8, 3.14.4 and 3.13.13 are out!

Python Insider — 2026-04-07T00:00:00+00:00
A final alpha and two bug fixes are awaiting your upgrade.

v3.4.1

cibuildwheel — 2026-04-02T13:58:09+00:00
⚠️ Building for the experimental CPython 3.13 free-threading variant is now deprecated. That functionality will be removed in the next minor release. The enable option cpython-freethreading is therefore also deprecated. Builds specifying enable = "all" no longer select cpython-freethreading . CPython 3.14 free-threading support remains available without the enable flag. ( #2787 ) 🐛 iOS builds will no longer skip repair-wheel-command if it's defined in config ( #2761 ) 🐛 Fix bug causing uv to fai

v3.4

cibuildwheel — 2026-04-02T13:57:46+00:00
v3.4.1

Incident Report: LiteLLM/Telnyx supply-chain attacks, with guidance

PyPI Blog — 2026-04-02T06:09:00+00:00
This post will drill deeper into two recent supply chain exploits, targeting users of popular PyPI packages - litellm & telnyx . We also provide Python developers and maintainers with guidance on what they can do to prepare and protect themselves from future incidents. What happened with LiteLLM and telnyx? After an API token exposure from an exploited Trivy dependency releases of the packages litellm and telnyx were published to PyPI containing credential harvesting malware. The malware ran on

PEP 829: Package Startup Configuration Files

PEPs — 2026-03-31T00:00:00+00:00
This PEP changes the way packages influence Python’s startup process. Previously controlled through legacy .pth files parsed and executed by the site.py file during interpreter startup, such files are used to extend sys.path and execute package initialization code before control is passed to the first line of user code.

1.4.2

build (pypa) — 2026-03-25T14:20:05+00:00
What's Changed fix(uv): always pass the python to use by @henryiii in #996 🐛 fix(release): detect pre-commit environment inconsistencies by @gaborbernat in #1001 🔧 fix(towncrier): match docstrfmt RST formatting expectations by @gaborbernat in #1002 Fix _has_valid_outer_pip when pip is missing by @notatallshaw in #1003 fix: release changelog issue by @henryiii in #1006 New Contributors @notatallshaw made their first contribution in #1003 Full Changelog : 1.4.1...1.4.2

1.4.1

build (pypa) — 2026-03-24T23:08:43+00:00
What's Changed Fix documentation grammar and typos by @DimitriPapadopoulos in #979 Allow setting build constraints by @layday in #963 fix: pip hack workaround by @henryiii in #980 📚 docs: reorganize using Diataxis framework by @gaborbernat in #988 ✨ feat(ci): automate releases and harden workflows by @gaborbernat in #991 chore: avoid template injection zizmor issue by @henryiii in #994 chore: fix PR template by @henryiii in #995 chore: fix fix job by @henryiii in #997 🐛 fix(ci): resolve pre-rele

Python 3.15's JIT is now back on track

Python Insider — 2026-03-23T00:00:00+00:00
A look at Python's JIT in 3.15a7.

v2.23.4

cibuildwheel — 2026-03-16T19:32:28+00:00
🐛 Fix HTTP 429 errors while downloading virtualenv from GitHub blob URLs – uses a https://bootstrap.pypa.io/ URL instead. ( #2775 )

v2.23

cibuildwheel — 2026-03-16T19:31:55+00:00
v2.23.4

PEP 830: Add timestamps to exceptions and tracebacks

PEPs — 2026-03-15T00:00:00+00:00
This PEP adds an optional __timestamp_ns__ attribute to BaseException that records when the exception was instantiated with no observable overhead. When enabled via environment variable or command-line flag, formatted tracebacks display this timestamp alongside the exception message.

PEP 831: Frame Pointers Everywhere: Enabling System-Level Observability for Python

PEPs — 2026-03-14T00:00:00+00:00
This PEP proposes two things:

Applications to Join the PSF Meetup Pro Network Are Back Open

PSF Blog — 2026-03-12T12:47:00.002000+00:00
Following the introduction of the PSF Community Partner Program , the Python Software Foundation (PSF) is pleased to announce that we have reopened the application for Python Meetup groups to join the PSF’s Meetup Pro Network ! We’re very excited to bring back this offering to the Python community after applications were temporarily suspended under the broader PSF Grants Program pause last August. Make sure to check out the PSF’s Meetup Pro Network documentation page for more information on how

Python 3.15.0 alpha 7

Python Insider — 2026-03-10T00:00:00+00:00
The penultimate 3.15 alpha is out!

CPython: 36 Years of Source Code

Python Insider — 2026-03-08T00:00:00+00:00
An analysis of the growth of CPython's codebase from its first commits to the present day

PEP 828: Supporting 'yield from' in asynchronous generators

PEPs — 2026-03-07T00:00:00+00:00
This PEP introduces support for yield from in an asynchronous generator function through a new async yield from construct:

The Python Insider Blog Has Moved!

Python Insider — 2026-03-03T00:00:00+00:00
Python Insider now lives at blog.python.org, backed by a Git repository. All 307 posts from the Blogger era have been migrated, and old URLs redirect automatically.

Python 3.12.13, 3.11.15 and 3.10.20 are now available!

Python Insider — 2026-03-03T00:00:00+00:00
[Python Releases For Your Security!](https://discuss.python.org/t/python-3-12-13-3-11-15-and-3-10-20-are-now-available/106363) New security releases for 3.10, 3.11 and 3.12 are now available.

PEP 827: Type Manipulation

PEPs — 2026-02-27T00:00:00+00:00
We propose adding powerful type-level introspection and construction facilities to Python’s type system. This design is inspired largely by TypeScript’s conditional and mapped types, but is adapted to the distinct semantics and constraints of Python’s typing model.

Python Infrastructure Outage

Python Status — 2026-02-26T23:26:50+00:00
Feb 26 , 23:26 UTC Resolved - The incident has been resolved. Feb 26 , 20:40 UTC Update - The root cause has been identified as an erroneous scaling operation that affected some application workloads. All services have been restored and are coming back online. We are monitoring to confirm full recovery. Feb 26 , 20:04 UTC Investigating - We are currently investigating this issue

PEP 826: Python 3.16 Release Schedule

PEPs — 2026-02-23T00:00:00+00:00
This document describes the development and release schedule for Python 3.16.

API Traffic experiencing intermittent failures

Python Status — 2026-02-19T23:59:14+00:00
Feb 19 , 23:59 UTC Resolved - This incident has been resolved. Feb 19 , 22:56 UTC Monitoring - A fix has been implemented and we are monitoring the results. Feb 19 , 22:46 UTC Investigating - We are currently investigating this issue.

PEP 825: Wheel Variants: Package Format

PEPs — 2026-02-17T00:00:00+00:00
This PEP proposes variant wheels, an extension to packaging:specifications/binary-distribution-format that permits building multiple variants of the same package while embedding additional compatibility data. The specific properties are stored inside the wheel, and expressed via a human-readable variant label in the filename, which is then mapped to the actual properties via a separately hosted JSON mapping. This aims to make {tool} install {package} capable of selecting the most appropriate var

Join the Python Security Response Team!

Python Insider — 2026-02-17T00:00:00+00:00
The Python Security Response Team now has an approved public governance document (PEP 811) and is welcoming new members.

Python is for Everyone: Inside the PSF's D&I Work Group

PSF Blog — 2026-02-12T12:53:00+00:00
We are living in a moment where diversity and inclusion work is being actively undermined. From policy changes to corporate rollbacks, the gains we’ve fought for are being questioned and dismantled. Having lived in different countries and been part of many diverse communities, I’ve seen firsthand what happens when people feel excluded from spaces they want to be part of. As the chair of the Python Software Foundation’s Diversity & Inclusion Work Group for the past two years, I want to share what

Python 3.15.0 alpha 6

Python Insider — 2026-02-11T00:00:00+00:00
This is an early developer preview of Python 3.15 www.python.org/downloads/release/python-3150a6/ Major new features of the 3.15 series, compared to 3.14 Pyt...

Introducing the PSF Community Partner Program

PSF Blog — 2026-02-10T13:37:00.001000+00:00
The Python Software Foundation (PSF) is excited to announce the introduction of the PSF Community Partner Program . This new program is designed as an “in-kind” way for us to support Python events and initiatives with non-financial assistance through the use of the PSF logo and name, as well as promotional support via sharing qualified posts on PSF official social media accounts. The PSF looks forward to supporting Python community events and initiatives through this new program! The introductio

26.0.1

pip — 2026-02-05T00:11:12+00:00
Release 26.0.1

Python 3.14.3 and 3.13.12 are now available!

Python Insider — 2026-02-03T00:00:00+00:00
Python 3.14.3 is now available! This is third maintenance release of Python 3.14 Python 3.14.3 is the third maintenance release of 3.14, containing around ...

Merge pull request #13779 from notatallshaw/fix-26.0-news

pip — 2026-01-31T01:15:05+00:00
fix 26.0 news

Your Python. Your Voice. Join the Python Developers Survey 2026!

PSF Blog — 2026-01-26T13:31:00.001000+00:00
This year marks the ninth iteration of the official Python Developers Survey. We intentionally launched the survey in January (later than years prior) so that data collection and results can be completed and shared within the same calendar year. The survey aims to capture the current state of the Python language and its surrounding ecosystem. By comparing the results with last year’s, the community can identify emerging trends and gain deeper insight into how Python continues to evolve. We encou

Dispatch from PyPI Land: A Year (and a Half!) as the Inaugural PyPI Support Specialist

PyPI Blog — 2026-01-26T06:09:00+00:00
Hello there! I am Maria, the inaugural PyPI Support Specialist. I go by "Thespi-Brain" on GitHub. I wanted to provide a dispatch of how this past year (and a half!) has been regarding my role and PyPI. PyPI has now reached over a million users and has over 700,000 projects. It is, without a doubt, a critical part of the Python ecosystem. As the inaugural PyPI Support Specialist, there were numerous challenges that needed to be tackled regarding PyPI support, such as the ever growing backlog of a

Departing the Python Software Foundation (Staff)

PSF Blog — 2026-01-21T20:00:00.002000+00:00
This week will be my last as the Director of Infrastructure at the Python Software Foundation and my last week as a staff member. Supporting the mission of this organization with my labor has been unbelievable in retrospect and I am filled with gratitude to every member of this community, volunteer, sponsor, board member, and staff member of this organization who have worked alongside me and entrusted me with root@python.org f or all this time. But, it is time for me to do something new. I don’t

Announcing Python Software Foundation Fellow Members for Q4 2025! 🎉

PSF Blog — 2026-01-20T19:49:00.004000+00:00
The PSF is pleased to announce its fourth batch of PSF Fellows for 2025 ! Let us welcome the new PSF Fellows for Q4 ! The following people continue to do amazing things for the Python community: Chris Brousseau Website , LinkedIn , GitHub , Mastodon , X , PyBay, PyBay GitHub Dave Forgac Website , Mastodon , GitHub , LinkedIn Inessa Pawson GitHub , LinkedIn James Abel Website , LinkedIn , GitHub , Bluesky Karen Dalton LinkedIn Mia Bajić Tatiana Andrea Delgadillo Garzofino Website , GitHub , Linke

Python 3.15.0 alpha 5 (yes, another alpha!)

Python Insider — 2026-01-14T00:00:00+00:00
Note: 3.15.0a4 was accidentally built against from 2025-12-23 instead of 2026-01-13, so this 3.15.0a5 is an extra release correctly built against 2026-01-14...

Anthropic invests $1.5 million in the Python Software Foundation and open source security

PSF Blog — 2026-01-13T13:00:00.001000+00:00
We are thrilled to announce that Anthropic has entered into a two-year partnership with the Python Software Foundation (PSF) to contribute a landmark total of $1.5 million to support the foundation’s work, with an emphasis on Python ecosystem security. This investment will enable the PSF to make crucial security advances to CPython and the Python Package Index (PyPI) benefiting all users, and it will also sustain the foundation’s core work supporting the Python language, ecosystem, and global co

Python 3.15.0 alpha 4

Python Insider — 2026-01-13T00:00:00+00:00
Edit: This 3.15.0a4 was accidentally built against \ from 2025-12-23 instead of 2026-01-13, so 3.15.0a5 is an extra release correctly built against 2026-01-1...

1.4.0

build (pypa) — 2026-01-08T16:40:59+00:00
Add --quiet flag (PR #947 ) Add option to dump PEP 517 metadata with --metadata (PR #940 , PR #943 ) Support UV environment variable (PR #971 ) Remove a workaround for 3.14b1 (PR #960 ) In 3.14 final release, color defaults to True already (PR #962 ) Pass sp-repo-review (PR #942 ) In pytest configuration, log_level is better than log_cli_level (PR #950 ) Split up typing and mypy (PR #944 ) Use types-colorama (PR #945 ) In docs, first argument for _has_dependency is a name (PR #970 ) Fix test fai

PyPI Uploads failing

Python Status — 2026-01-07T23:00:57+00:00
Jan 7 , 23:00 UTC Resolved - This incident has been resolved. Jan 7 , 22:59 UTC Monitoring - We identified a database lock causing contention and stopped all upload backends to release all locks and are monitoring for recovery. Jan 7 , 22:42 UTC Investigating - We are investigating why PyPI uploads are failing.

PyPI in 2025: A Year in Review

PyPI Blog — 2025-12-31T06:09:00+00:00
As 2025 comes to a close, it's time to look back at another busy year for the Python Package Index. This year, we've focused on delivering critical security enhancements, rolling out powerful new features for organizations, improving the overall user experience for the millions of developers who rely on PyPI every day, and responding to a number of security incidents with transparency. But first, let's look at some numbers that illustrate the sheer scale of PyPI in 2025: More than 3.9 million ne

Python 3.15.0 alpha 3

Python Insider — 2025-12-16T00:00:00+00:00
This is an early developer preview of Python 3.15 www.python.org/downloads/release/python-3150a3/ Major new features of the 3.15 series, compared to 3.14 Pyt...

Python 3.14.2 and 3.13.11 are now available!

Python Insider — 2025-12-05T00:00:00+00:00
Two more, just three days after the last? Yes! We found some regressions, so here’s an expedited pair of releases. They also come with some bonus security fi...

Sovereign Tech Agency and PSF Security Partnership

PSF Blog — 2025-12-02T12:00:00.001000+00:00
We are thrilled to announce that the Sovereign Tech Agency has committed to a €86,000 investment in work to be performed by the Python Software Foundation to improve the security of CPython and the Python Package Index (PyPI). The Sovereign Tech Agency is a public organization in Germany that focuses on increasing the security and resilience of critical open source software that forms the foundation of modern digital technology. With the Sovereign Tech Fund, they invest globally in open software

Python 3.14.1 is now available!

Python Insider — 2025-12-02T00:00:00+00:00
!Two snakes enjoying a pie with 3.14 on the top and π crimping This is first maintenance release of Python 3.14 Python 3.14.1 is the first maintenance release...

Python

aiogram_bot_tester 2.0.0

deepen-grade 0.2.1

girder-authorized-upload 5.0.13

girder-audit-logs 5.0.13

halo-record 0.2.9

PyCoder’s Weekly: Issue #744: CPython ABI, CLAUDE.md, Itertools Cheatsheet, and More (2026-07-21)

PyCharm: What’s New in PyCharm 2026.2

Rodrigo Girão Serrão: Python quiz: EuroPython 2026 edition

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Python Bytes: #489 Or JSON?

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When agents build agents: the loop

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PyCharm: Best Object Detection Models for Machine Learning in 2026

Ari Lamstein: This Thursday: Building Data Apps with Streamlit and Copilot

Testing MCP Servers With a Python MCP Client

Django Weblog: Django security releases issued: 6.0.7 and 5.2.16

Quiz: Testing MCP Servers With a Python MCP Client

PyCon: Welcome, Kattni!

Python Bytes: #487 Minimum requirements

The No Title® Tech Blog: Optimize Images X now supports WEBP and drag and drop

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Core Dispatch: Core Dispatch #7

Bob Belderbos: One Core, Two Interfaces, No Rewrites

PyCon Ireland: Update on PyCon Ireland 2026: Venue Change and Extended CFP Deadline

Quiz: Python Interfaces: Object-Oriented Design Principles

The Real Python Podcast – Episode #301: Running Python Locally in a Sandbox

cx_Freeze

Material for MkDocs: Documentation Theme and Framework

Flit: Python Build and Publish Tool

build: Python Package Build Frontend

Thinking about running for the PSF Board? Let’s talk!

Quiz: Natural Language Processing With Python's NLTK Package

Observability MCP comparison: Pydantic Logfire, ClickStack, LangSmith, Braintrust, Galileo, Phoenix, and Langfuse

PEP 836: JIT Go Brrr: The Path to a Supported JIT Compiler for CPython

Python 3.15 Preview: Upgraded JIT Compiler

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Python install manager 26.3

Managing and Measuring Python Code Quality

Quiz: Managing and Measuring Python Code Quality

Dispatches from the hallway track: what developers are actually talking about at conferences

Some Customers Can't Use Your Cloud. Now What?

Python Packaging Council Inaugural Election Dates

How to Get Started With the GitHub Copilot CLI

Quiz: How to Get Started With the GitHub Copilot CLI

Packaging Council Inaugural Election Dates

Black: Python Code Formatter

conda-pypi

distutils: Python's Original Build System

Briefcase

The Real Python Podcast – Episode #300: Maintaining Your Python Developer Instincts While Using LLM Tools

What makes a good agent harness

Applied generative AI maturity model for senior leaders

conda-forge: Community Conda Package Channel

Django Tasks: Exploring the Built-in Tasks Framework

Quiz: Django Tasks: Exploring the Built-in Tasks Framework

Full-stack AI agent template with Pydantic AI and Logfire

Hatch: Python Project Manager

Using LlamaIndex for RAG in Python

Python 3.15.0b3

Quiz: Using LlamaIndex for RAG in Python

Pydantic AI v2: capabilities, a leaner core, and the Harness

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Conda Package

Anaconda: Python and R Data Science Platform

Python 3.15.0 beta 3 is here!

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Python for Data Analysis: A Practical Guide

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