I wrote a bit about what went on at the recent Python Core Sprint at #Arm in Cambridge, plus some bonus @PyConUK highlights.

https://hugovk.dev/blog/2025/python-core-sprint/

#Python #CoreSprint #PyConUK

Python Core Sprint 2025

Hugo van Kemenade

[Forgot to press send on this two weeks ago...]

On my way to the Arm office in Cambridge for the Python core sprint! Exciting week ahead!
#Python #CoreSprint

🐍🏃‍➡️🏃‍➡️🏃‍➡️🏃‍➡️ #Python #CoreSprint day 4!

Finally, time for the 3.14.0rc3 release: originally planned for Tuesday, moved to Wednesday to better fit the schedule, moved to Thursday to give the SC an extra day to decide on a potential revert. Next RM @savannah.dev joined in to watch the process and ask questions. 🥧

Then a quick core․py recording with Pablo and @ambv before heading up to Manchester for #PyConUK! 🐝

Thanks again to Diego Russo and Arm for hosting us! 🦾

🐍🏃‍➡️🏃‍➡️ #Python #CoreSprint day 2!

@trallard gave a presentation about the different types of mentorship and how we can improve in CPython, followed by discussion

@gpshead gave demo on tools like Claude

Tania, @jezdez, @willingc and I discussed about the User Success WG and we came up with some ideas on next steps

We ended the day with punting on the Cam and dinner at Jesus College, thank you, Arm!

@Yhg1s gave a fun session of his Feuding Pythonistas (spoiler: people are wrong on the internet)

🐍🏃‍➡️ We kicked off the first day of the #Python #CoreSprint at #Arm in #Cambridge with lots of talks and lots of discussion about talks!

Ken Jin - Building a JIT Community AND Demo [effect] of new C API
@antocuni - Tracing JITs on real code
@brettcannon - WASI update AND precompiled binaries from python.org
Hood Chatham - Upstreaming Pyodide FFI
@freakboy3742 - Managing cross-platform wheel builds
Steering Council - PEP 793 and abi3/abi3t/abi4
Matthew Parkinson - Designing Deep Immutability