#CPython

CPython internals: @property, @classmethod, @staticmethod. These are decorators built into Python. @property replaces a method with a property object (area = property(area)) #Python #CPython #100DaysOfCode

CPython internals: @contextmanager. You can write a context manager as a generator instead of a class. Code before yield plays __enter__, the with block runs while the generator is paused, and code after yield plays __exit__. #Python #CPython #100DaysOfCode

CPython internals: context managers and the with statement. with calls __enter__ when the block starts and __exit__ when it ends, whether the block finished normally or raised an error. #Python #CPython #100DaysOfCode

CPython internals classes, self, and class vs instance attributes. Class attributes live once, on the class itself, shared by every instance via lookup. Instance attributes (self.x = ...) are private per object. #Python #CPython #100DaysOfCode

CPython's experimental JIT looks set to be removed. Its authors withdrew PEP 836 on Oct 19, so no PEP will meet the steering council's six-month deadline to make the JIT a supported feature. LWN expects it out of main during the Python 3.16 cycle. #Python #CPython

Congrats to Pradyun Gedam (@pradyunsg), an engineer w/ our Python Infrastructure team, on being promoted to #CPython core dev! 🎉 He's been active in the #Python 🐍 packaging ecosystem since 2017, and works on pip, @pypi, @ThePyPA, #Sphinx, TOML, and more.

Thank you to our first block of Day 1 #rustconf speakers! From the warm welcome to #rustconf26 via Bec Rumbul, to Jon Seager's keynote, to some great project updates from #cpython and #rustls, we covered a lot of ground already 🦀 We're headed into a short break now and will be back for breakouts after that! Weds schedule: Virtual info:

🚀 How does Python work under the hood? Join the CPython Series: 🧠 Internals deep dive 🤝 Open-source sprints 👩‍🏫 Hands-on workshop 🌏 Meet core devs in Taiwan! 📍 5/10 Sciwork Hsinchu 📍 6/7 Workshop (tickets on 5/5) 📍 9/5 PyCon TW Sprints #CPython #PyConTW

🎉 #PyConTW2026 Core Systems & Performance Lineup is LIVE! 🐍✨ Dive deep into Free-threaded Python, CPython JIT benchmarks, eBPF, Descriptors & contributing your first PR to CPython! #Core #CPython #Systems #Performance #PyConTW

In today's #sponsored #PyConUS 🐍 talk, @Bloomberg announced plans to sponsor @ThePSF's hiring of a full-time Deputy Developer-in-Residence to accelerate the velocity of the #CPython core dev team. What a great opportunity for a developer to join the PSF team to make an impact!

Software Bill-of-Materials (SBOM) documents are now available for CPython source artifacts! 🥳 #python #cpython #sbom

Reading the CPython source as a hard copy, it's a great pleasure! / CPython kaynak kodunu basılı kopya olarak okumak büyük bir zevk! #CPython #Python

Weekend reading... #cpython #internals

#GCC applies #Clang-compatible [[musttail]] feature, required by #CPython copy-and-patch JIT. Thanks Andi Kleen @intel . @llvmorg

Everything you need to know about calling C functions from #Python here as we deep dive into ctypes implementation in #CPython:

Write like Python, run like C. That’s the magic of CPython! ✨ #python #cpython

The proof-of-concept involves substantial changes to CPython internals, but relatively few changes to the C-API. #cpython #gil

Lazyweb, a question about #python I remember reading somewhere that it might be a bad idea to keep a "return" statement inside a "try" or "except" blocks in #Python. Was something about security and memory usage/leak/overflow. Can you point me to any text on the subject? #CPython

🐍 Python 3.15.0rc1 is out! Proud to have contributed to CPython with changes included in the 3.15 release. Congratulations to the @ThePSF community! #Python #CPython #OpenSource #Python315

Time to take the plunge… Added to my (growing) #summer reading list… Be gentle on me, @anthonypjshaw, I've put this off for so long for a reason… #Python #CPython