PyCoder’s Weekly | Issue #725 Generators, __init__.py, Pointblank, and More

📰🐍 Get the best Python links of the week: PyCoder’s Weekly Issue #725: Generators, __init__.py, Pointblank, and More (March 10, 2026) pycoders.com/issues/725

created a new website allowing users to run and share FastAPI and other apps right in a browser sandbox environment:
jamie-chang.github.io/webasgi/?aut...

Read more about the design in my blog post: blog.changs.co.uk/webasgi-run-...

🐍📩 Pycoders Weekly (Issue 719) — Django Tasks, Dictionaries, Ollama, and More

pycoders.com/issues/719

I just completed all 12 days of Advent of Code 2025! #AdventOfCode adventofcode.com

I tried marimo recently and I really like it. blog.changs.co.uk/trying-out-m...

why the f**k would cursor rebind this?

Lazy imports in #Python are useful but limited by obscuring of typing information. In my latest blog post, I discuss a method to create typing information that more people should know about.

blog.changs.co.uk/fixing-lazy-...

Episode #271: Benchmarking Python 3.14 & Enabling Asyncio to Scale – The Real Python Podcast How does Python 3.14 perform under a few hand-crafted benchmarks? Does the performance of asyncio scale on the free-threaded build? Christopher Trudeau is back on the show this week, bringing another…

On this week's episode, @digiglean.bsky.social and I talk about loads of PEPs, more 3.14 news, and discuss what it means to have good engineering taste.

With content from: @brianokken.bsky.social @miguelgrinberg.com @changs.co.uk @davepeck.org and others not on the 🦋

Three times faster with lazy imports

I benchmarked --help on a CLI with the ref implementation for PEP 810 (lazy imports).

Because my CLI moved imports into functions just before they get used, I got a speedup of x1.3.

Then I moved all the imports to the top like normal, and got a speedup of x2.9!

hugovk.dev/blog/2025/la...
#Python

To celebrate the release of #Python 3.14| look at the often overlooked #asyncio changes:

blog.changs.co.uk/python-314-3...

PEP 810: Explicit lazy imports 👋 Hi everyone, We are very exited to share with you PEP 810: Explicit lazy imports: We’re proposing an opt-in lazy import syntax that defers module loading until first use, aiming for faster startup,...

Let me post a *non*-subskeet for once... We made a thing!

discuss.python.org/t/pep-810-ex...

#Python #PEP

Python 3.14: 3 Smaller Features #python

New blog post about measuring the speed and memory performance on different asyncio baackpressure solutions.

blog.changs.co.uk/asyncio-back...

#python #asyncio

I'm excited to see UUID V7 being supported more universally.

For databases, UUID 7 combines the flexibility and security of UUID 4 with time based ordering making it a great choice for IDs

GitHub - qweeze/uring_file: Asynchronous file I/O with io_uring and asyncio Asynchronous file I/O with io_uring and asyncio. Contribute to qweeze/uring_file development by creating an account on GitHub.

I had a similar quest to find a truly async file API recently and found github.com/qweeze/uring...

Python 3.14: 3 smaller features share.google/j0VSOzZH2lck...

The lethal trifecta for AI agents: private data, untrusted content, and external communication If you are a user of LLM systems that use tools (you can call them “AI agents” if you like) it is critically important that you understand the risk of …

If you use "AI agents" (LLMs calling tools in a loop) you need to be aware of the Lethal Trifecta

Combine access to private data, exposure to untrusted content and the ability to externally communicate and an attacker can trick the system into stealing your data simonwillison.net/2025/Jun/16/...

#MCP is here to stay, so I tried implementing something slightly more useful than a weather tool. See how you can use custom MCP servers to help with your github workflow:
blog.changs.co.uk/first-look-a...

Free threading and subinterpreter performance in 3.13 vs 3.14

Quick look at the state of free-threading in #python 3.14 beta

blog.changs.co.uk/python-314-s...

Python3.14 beta 1 is out today, I go over how to use and abuse the new t-strings:

blog.changs.co.uk/t-strings-th...

PEP 750 – Template Strings | peps.python.org This PEP introduces template strings for custom string processing.

t-strings are coming!

https://peps.python.org/pep-0750/

discuss.python.org/t/pep750-template-string...

My SQLAlchemy Cookbook #python

I've been unknowingly building DSLs using operators in #Python. Here I walkthough how you might do the same!

blog.changs.co.uk/building-a-d...

Customising Pattern Matching Behaviour #python

Check out my blog post on functional programming in Python, where I talk a bit more about my new #Python package blog.changs.co.uk/better-funct...

Example of better-functools

Been a little obsessed with #ocaml lately, so I've tried to bring some of #functional ergonomics into #Python.

Checkout my new package better-functools
pypi.org/project/bett...

TIL: though functools.partial can't be expressed using #Python types, both pyright and mypy support it fully.
pyright-play.net?pythonVersio...

New blog post!

Do you use #sqlalchemy? Have you run into this issue? #Python
blog.changs.co.uk/sqlalchemy-f...

We’re building a new static type checker for Python, from scratch, in Rust.

From a technical perspective, it’s probably our most ambitious project yet. We’re about 800 PRs deep!