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