TestDriven.io

Teaching practical programming through real-world applications. Tweets by @MikeHerman and @JanGiacomelli.

[Dabs🩸 @DabsMalone]

a lot of old software was protected by “exploiting this would be an unreasonable amount of work”

we have invented a machine that does unreasonable amounts of work

anyway how’s the patch backlog

[Python Software Foundation @ThePSF]

In response to the eMudhra / emSign certificate security incident we've published guidance for Python users to update CA certificates: https://t.co/tjBrJM4iTZ

#security #Python #pki
https://t.co/tjBrJM4iTZ

[Python Software Foundation @ThePSF]

The PSF is hiring a CPython Developer in Residence! Full-time, remote, $70K–170K (US) or comparable contractor rates abroad. Help keep Python’s core healthy and support the volunteers who maintain it. Apply by Nov 19:
https://t.co/Fw5k4Hzdvv

#Python
https://t.co/Fw5k4Hzdvv

[hannah @erhannah]

one day you wrote console.log("here") for the last time and didn't even know it

[Kevin Naughton Jr. @KevinNaughtonJr]

engineers used to hate context switching and now that's all engineering is

[PyCoder’s Weekly @pycoders]

django-upgrade-report: Which Dependencies Block a Django Upgrade? https://t.co/X84eTap3i1

[Mike Driscoll @driscollis]

Python 3.15 adds lazy imports with the new lazy keyword! 🐍

Instead of loading a module when your script starts, Python waits until you actually use it.

Here's a quick example:

lazy import json
lazy from pathlib import Path

Good use cases:

- CLI tools where most commands only need a few modules
- Big libraries like pandas or numpy that you only use in one code path
- Apps where startup time matters

The result is faster startup times with almost no code changes.

Will you use it? 🚀

[Mike Driscoll @driscollis]

Python 3.15 adds frozendict as a built-in type! 🐍

It works like a dict, but it's immutable. Once you create it, you can't change it. That also makes it hashable, so you can use it as a dict key or put it in a set.

Great for config data you don't want changed by accident.

Will you use it?

Here's a quick example:

[Mike Driscoll @driscollis]

Python 3.15 is officially out! 🐍🚀 Here are some of the new features I'm most excited to try:

1. Lazy imports with the new lazy keyword for faster startup times
2. frozendict is now a built-in type
3. A new sentinel built-in type
4. Unpacking in comprehensions
5. UTF-8 is now the default encoding
6. Tachyon, a new sampling profiler in the profiling package
7. A faster experimental JIT compiler
8. Better error messages and more color in the CLI

Which one will you use first?

[Simon Willison @simonw]

Shared some notes on Python 3.15, using it with uv, and features from Python 3.11 I'm excited to use now that 3.10 is no longer the minimum supported version for my own projects https://t.co/rlGKf8WI62

[PyCoder’s Weekly @pycoders]

The 5 Most Exciting New Features of Python 3.15 https://t.co/ugbwBPjzs3

[Sebastián Ramírez @tiangolo]

Imagine having support for this in Python

Oh, the excitement 🤩

[Arpit Bhayani @arpit_bhayani]

AI can give us every answer, but we are losing the ability to ask questions.

[Trey Hunner @treyhunner]

Python 3.15 is out! 🐍🎉

A few of my favorite new features:

• UTF-8 default encoding on Windows (boring but big)
• profiling.sampling!
• lazy import json
• [*x for x in nested]
• sentinel()
• frozendict
• pprint(data, expand=True)

More 👇

https://t.co/9OdE07wmLj

[Sebastián Ramírez @tiangolo]

SQLAlchemy 2.1 was released 2 weeks ago, it adds several typing improvements and has @psycopg's latest version as the default for Postgres 🎉

SQLModel 0.0.48, just released, adds support for it, so you can get the new cool stuff by default. 🥳

https://t.co/EQ1OrhlO1P

[Thariq @trq212]

working at a higher level of abstraction has always required understanding the lower level ones, I don't think coding agents changes this

[Arpit Bhayani @arpit_bhayani]

pro tip: do not let AI take away the serendipity in your life. make a concious effort to stumble upon something interesting every single day.

[Steve Klabnik @steveklabnik]

in general, beware of forming a whole opinion based on one single thing

for example, making broad characterizations about programming languages based on a single benchmark about them

[Michael Kennedy @mkennedy]

@pamelafox @TalkPython Thanks for the shoutout Pamela! Very surprising result (on the memory side). Here the full background article referenced for folks reading the tweet but not watching the talk: https://t.co/gIIFfuQd4L

[DjangoCon US @djangocon]

Make DjangoCon US part of your 2027 plans.
Join the Django community for five days of learning and connection in Riverside, California.
September 13–17, 2027
Get your ticket: https://t.co/X1izH7DJWV
#DjangoConUS #Django #Python