PyCon US 2025 Recap

core.py

We’ve been gone a while. Here’s our excuse for being silent for a month: PyCon, PyCon, something something security. Come listen to how the conference looked like from our perspective! And whatever you do, DO NOT upgrade to Python 3.13.4.

## Timestamps

(00:00:00) INTRO

(00:01:06) PART 1: LANGUAGE SUMMIT

(00:04:47) A bit about the Summit talks

(00:06:19) Is free-threading happening?

(00:09:20) Łukasz and his favorite discussion item at the Summit

(00:13:38) Find actual competent coverage of the Summit on the PSF blog

(00:14:17) PART 2: PYCON TALK HIGHLIGHTS

(00:14:33) Cory Doctorow's opening keynote

(00:18:17) Brandt Bucher's talk on JIT challenges

(00:28:28) Lysandros and Nathan talk about community adoption of free-threading

(00:36:23) Lynn Root's keynote

(00:37:46) PyXL: Python-oriented chip

(00:39:47) Łukasz and his tutorial on WebGL with PyScript

(00:47:58) A new bet appears!

(00:48:14) Zoom, Enhance the Banana

(00:54:11) Watch out, Łukasz is talking about audio again

(01:02:42) Ivona and Pablo talk about remote code execution as a service

(01:05:44) Core Python sprints after the conference

(01:12:48) PART 3: PR OF THE WEEK

(01:13:00) tarfile security fixes

(01:19:13) Pablo's PR: strncmp considered harmful

(01:25:36) PART 4: WHAT'S GOING ON IN CPYTHON

(01:26:06) compression.zstd lands

(01:28:01) concurrent.futures → asyncio.Future transfer 4X faster

(01:29:14) Bugfix: PyCFuncPtr_call no longer uses locks

(01:30:13) Some curiosities

(01:34:14) OUTRO