PyCon US 2025 Recap

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