PyCoder’s Weekly: Issue #754: Jev, PyO3, Temp Files, and More (2026-09-29)

Link: https://pycoders.com/issues/754

#754 – SEPTEMBER 29, 2026 View in Browser » How to Get Started With Jev in Python Connect a Python script to the Jev model with the TypeSafe SDK and OpenRouter, then replace brittle input checks

Armin Ronacher: Deser: Rethinking Rust Serialization

Link: https://lucumr.pocoo.org/2026/9/29/deser/

Serde is an amazing serialization library for Rust and it
has been a huge reason why I felt productive with it for years. However already
while at Sentry I got quite frustrated with some of the limit

LernerPython blog, from Reuven Lerner: Pandas dropna with thresh: Drop only rows with too many NaN values

Link: https://lernerpython.com/2026/09/27/pandas-dropna-with-thresh-drop-only-rows-with-too-many-nan-values/


You can remove NaN from a Python Pandas data frame with dropna, but be careful: It removes rows with even one NaN, which can be overkill.
Pass “thresh” to allow some rows to remain, even if they cont

Python GUIs: Changing Ticks in PyQtGraph Objects to Strings — How to replace numeric axis ticks with custom labels like month names or dates in PyQtGraph

Link: https://www.pythonguis.com/faq/changing-ticks-in-pyqtgraph-objects-to-strings/


How do I replace the numeric tick labels on a PyQtGraph axis with custom strings, like month names or category labels?

When you're plotting data in PyQtGraph, the axes default to showing numeric tic

Seth Michael Larson: Blogging for the Python Language Summit

Link: https://sethmlarson.dev/python-language-summit-blogging?utm_campaign=rss

Hey, did you miss me? I've only published two blog posts
in the past two months because I was busy writing 10+ blog
posts detailing the Python Language Summit in 2026.
If you are interested in the Pyt

Python Software Foundation: Python Language Summit 2026 blog posts are now available

Link: https://pyfound.blogspot.com/2026/09/python-language-summit-2026.html

On July 14th, 2026, 47 Python core developers and special guests sat down
at the Python Language Summit, this year
held in Kraków, Poland at EuroPython 2026, to discuss many topics about the future
of

Python Insider: One namespace to namespace them all (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-namespaces/

Pablo Galindo Salgado proposes a top-level `std` namespace for the Python standard library to prevent module shadowing and free up module names.

Python Insider: macOS and Python (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-macos-python/

Ned Deily weighs whether Python should continue shipping macOS installers

Python Insider: Garbage Collection: Generational? Incremental? Both! (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-garbage-collection-generational-incremental-both/

Mark Shannon proposes a future garbage collection strategy for Python following the revert of the incremental garbage collector in Python 3.14

Python Insider: Memory Buffer Protocol (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-memory-buffer-protocol/

Nathan Goldbaum proposes safe concurrent access through buffer leases and custom data types for the Python Buffer Protocol.

Python Insider: Memory Snapshots for CPython (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-memory-snapshots/

Hood Chatham proposes memory snapshots and an initialization phase for speedier Python startups

Python Insider: Rust for CPython (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-rust-for-cpython/

David Hewitt shares a status update, first module, and potential acceptance criteria for the Rust for CPython project

Python Insider: Spicycrab (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-spicycrab/

Kushal Das shows off Spicycrab, a Python-to-Rust transpiler for Python users who need performance without learning Rust or leaving Python

Python Insider: Developer-in-Residence Update & Future (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-developer-in-residence-update-and-future/

Petr Viktorin gives an update on the Developer-in-Residence role and asks Python core developers for projects to prioritize

Python Insider: Free-Threaded Python Post-Era (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-free-threading-post-era/

Tobias Wrigstad, Fridtjof Stoldt, and Donghee Na propose a safe and performant, high-level concurrency model for free-threaded Python

Python Insider: PEP 827: Type Manipulation (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-pep-827-type-manipulation/

Michael J. Sullivan presents PEP 827 and discusses a key design decision: how to store type annotations?

Python Insider: Lightning Talks (Python Language Summit 2026)

Link: https://blog.python.org/2026/09/language-summit-2026-lightning-talks/

Lightning talks on a one-time ABI break, safer interruptions, EktuPy (Scratch but Python), an AGENTS.md file for CPython, and a call to read PEP 836.

Python Insider: Python Language Summit 2026

Link: https://blog.python.org/2026/09/language-summit-2026/

The 2026 Python Language Summit was hosted in Kraków, Poland as part of EuroPython 2026. There were 15 talks covering free-threading, Rust, garbage collection, type annotations, and more.

Graham Dumpleton: Getting to know Tachyon

Link: https://grahamdumpleton.me/posts/2026/10/getting-to-know-tachyon/

Python 3.15 ships with a new profiler. It is called Tachyon, it lives in the standard library as the profiling.sampling module, and unlike cProfile it is a sampling profiler rather than a tracing one.

Python Insider: Python 3.10.22, 3.11.17, 3.12.15, 3.13.16 and 3.14.8 are now available!

Link: https://blog.python.org/2026/10/python-31022-31117/

Security updates across Python 3.10–3.14, the final maintenance release of 3.13, and a farewell to Python 3.10.