How does Python 3.14 perform under a few hand-crafted benchmarks? Does the performance of asyncio scale on the free-threaded build? Christopher Trudeau is back on the show this week, bringing another batch of PyCoder’s Weekly articles and projects. At the top of the show, we have a mountain of release news and Python Enhancement Proposals to cover. Then, we dig into a couple of articles covering the performance of Python 3.14. The first is a benchmarking comparison of the last several Python versions and their variations, including JIT and free-threaded mode. The second explores the changes in 3.14 that enable asyncio to scale on CPython’s free-threaded build. We also share several other articles and projects from the Python community, including an introduction to NiceGUI, a free-threaded Python library compatibility checker, an exploration of what is “good taste” in software engineering, HTML templating with t‑strings, and a tool for testing Sphinx docs instantly in the browser. Course Spotlight: Documenting Python Projects With Sphinx and Read the Docs In this video series, you’ll create project documentation from scratch using Sphinx, the de facto standard for Python. You’ll also hook your code repository up to Read the Docs to automatically build and publish your code documentation. Topics: 00:00:00 – Introduction 00:02:28 – Python 3.12.12, 3.11.14, 3.10.19 and 3.9.24 now available 00:03:08 – Python 3.13.9 is now available 00:03:26 – Python 3.15.0 alpha 1 00:04:02 – PEP 804: An External Dependency Registry and Name Mapping Mechanism 00:04:56 – PEP 806: Mixed Sync/Async Context Managers With Precise Async Marking 00:06:34 – PEP 807: Index Support for Trusted Publishing 00:07:21 – PEP 809: Stable ABI for the Future 00:08:10 – PEP 810: Explicit Lazy Imports 00:10:31 – Python lazy imports you can use today 00:10:48 – Lazy Imports Using wrapt 00:11:18 – Python 3.14 Is Here. How Fast Is It? 00:17:45 – Free-Threaded Python Library Compatibility Checker 00:19:54 – Scaling Asyncio on Free-Threaded Python 00:24:06 – Real Python 3.14 Resources 00:25:18 – Video Course Spotlight 00:26:31 – Intro to NiceGUI: Build Interactive Python Web Apps 00:30:22 – What Is “Good Taste” in Software Engineering? 00:40:52 – Try Sphinx Docs Instantly in Your Browser 00:43:11 – Introducing tdom: HTML Templating With t‑strings 00:46:21 – Thanks and goodbye News: Python Insider: Python 3.12.12, 3.11.14, 3.10.19 and 3.9.24 are now available! Python Insider: Python 3.13.9 is now available! Python Insider: Python 3.15.0 alpha 1 PEP 804: An External Dependency Registry and Name Mapping Mechanism (Added) PEP 806: Mixed Sync/Async Context Managers With Precise Async Marking (Added) PEP 807: Index Support for Trusted Publishing (Added) PEP 809: Stable ABI for the Future (Added) PEP 810: Explicit Lazy Imports (Added)