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Anže @anze3db.pecar.me · 42m

I had a memory issue with Django's bulk_update queryset method.

The TLDR version is that bulk_update prepares all the update statements in advance (even when batch_size is set) which can use more memory than expected.

Details and a solution in the blog:
blog.pecar.me/django-bulk...

Django bulk_update memory issue

Recently, I had to write a Django migration to update hundreds of thousands of database objects. With some paper-napkin math I calculated that I can fit all the necessary data in memory, making the migration much simpler than it would have been otherwise.

blog.pecar.me

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Anže @anze3db.pecar.me · 2d

Yes, it's milliseconds. The web server and PostgreSQL server run on the same machine, so there is no network lag.

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Reposted by Anže

Brett Cannon @snarky.ca · 2d

In case you prefer text over video, the blog post version of my #EuroPython keynote about why it took 4 years to get a lock files specification for #Python is now up at snarky.ca/why-it-took-... .

Why it took 4 years to get a lock files specification

(This is the blog post version of my keynote from EuroPython 2025 in Prague, Czechia.) We now have a lock file format specification. That might not sound like a big deal, but for me it took 4 years o...

snarky.ca

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Anže @anze3db.pecar.me · 2d

I've improved the performance of the starter packs list query from about 200ms to 2ms. 🎉

The trick was to stop dynamically computing the number of accounts in a starter pack and instead precompute it in a column.

A bit more work on each update, but worth it!

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Anže @anze3db.pecar.me · 5d

Yesterday, Python 3.14 was released, and today all of my Django side projects are running on 3.14. 🎉

The upgrade didn't require any code changes on my part, but I did see a few return statements in the finally block SyntaxWarnings in a few dependencies.

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Reposted by Anže

Pablo Galindo Salgado @pablogsal.com · 5d

🐍 Python 3.14 is here! 🎉

✨ Template strings (t-strings) for safer string interpolation
🚀 Free-threaded Python officially supported (bye GIL!)
🎨 Syntax highlighting in the REPL
📦 Zstandard compression in stdlib
🔍 Remote PDB debugging

Full release notes: docs.python.org/3.14/whatsne...

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Anže @anze3db.pecar.me · 9d

I was moving imports into functions just last week and thinking how horrible this is. Great that we’ll get a solution for this in 3.15! 🤞🤞🎉🎉

Thomas Wouters @yhg1s.bsky.social · 9d

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

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

#Python #PEP

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,...

discuss.python.org

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Reposted by Anže

Thomas Wouters @yhg1s.bsky.social · 9d

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

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

#Python #PEP

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,...

discuss.python.org

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Anže @anze3db.pecar.me · 13d

Oh interesting! Would be great to know why Granian worked so much better. I had many services under heavy load but the bottleneck was never Gunicorn.

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Anže @anze3db.pecar.me · 14d

Over the weekend, I migrated one of my Django Apps from Gunicorn to Granian.

TLDR:
• The migration went smoothly.
• There were no visible performance gains.
• I still can't set a timeout for requests.

I also wrote a blog post about this: blog.pecar.me/migrating-g...

Migrating Gunicorn to Granian

I migrated one of my Django apps from Gunicorn to Granian yesterday. Here is how the migration went and some of my thoughts on Granian and Gunicorn.

blog.pecar.me

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Anže @anze3db.pecar.me · 18d

The plan with this meetup group is to meet on every first Thursday of the month. To get up to date info join us on Discord

discord.gg/23emSpY7

Join the Python 🐍 Lisbon Meetup Discord Server!

Discord server for the Python Lisbon Meetup community. | 51 members

discord.com

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Anže @anze3db.pecar.me · 18d

I'll be giving a talk about Free-threaded Python at the #01 - Python Lisbon Meetup next week (Oct 2)! 🎉

Hope to see you there!

www.meetup.com/python-lisb...

#01 - PyLM Meetup at Técnico 🎓🐍, Thu, Oct 2, 2025, 7:00 PM | Meetup

🇵🇹 Vamos encontrar-nos no dia **2 de outubro às 19:00 no IST, Pavilhão de Matemática, sala 3.10**! Desta vez teremos uma sala com projetor, por isso preparem-se para uma

www.meetup.com

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Reposted by Anže

Tiago Montes @setnomt.bsky.social · Aug 9

The Python Lisbon Meetup is kicking itself up. We will meet monthly, every first Thursday. Edition #0 is less than a month away, on Sep 4th.

Join us on Discord for tuning in!

discord.gg/PEnzcJzNyj

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Anže @anze3db.pecar.me · Aug 9

pip, pip-compile, and now uv. The migration from pip-compile to uv took 5 minutes 😄

Optional chaining would save you time when writing new code but makes debugging more difficult as you no longer know where the null came from…

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Anže @anze3db.pecar.me · Aug 9

Agreed, very dumb to standardize on a format that only has object, array, string, bool, and "number" types. 😆

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Anže @anze3db.pecar.me · Aug 9

How many different state libs did you go through in 10 years? How many reuter migrations? How many libs to render a table? Are you still writing class components?

Yes, Python 2 -> 3 was pain but still easier than getting a project from jQuery to React. Python 2 came out 6 years before jQuery.

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Anže @anze3db.pecar.me · Aug 8

This is a json problem not a python problem because json doesn't have a datetime type 🤷‍♂️

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Anže @anze3db.pecar.me · Aug 8

But at least you don’t need to rewrite your code in a new framework every other year 🤷‍♂️

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Anže @anze3db.pecar.me · Aug 5

The best TED Talk I've seen was about tying shoes.

It's mind blowing that we are all taught the weaker form of the knot as kids and never learn that there is a stronger version.

www.ted.com/talks/terry...

How to tie your shoes

Terry Moore found out he'd been tying his shoes the wrong way his whole life. In the spirit of TED, he takes the stage to share a better way.

www.ted.com

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Anže @anze3db.pecar.me · Aug 2

LLMs really are an amazing peace of technology. How were we ever able to live without them?

Thank you very much! :) was transformed into "Gratitude for assistance was expressed"

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Anže @anze3db.pecar.me · Aug 2

Air75 v3 from NuPhy

Anže @anze3db.pecar.me · Aug 1

Early birthday present has arrived! 🎂

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Reposted by Anže

Rodrigo Girão Serrão 🐍🚀 @mathspp.com · Jul 21

Who's up for showing up at @pyconpt.bsky.social this Thursday to give a 30 minute talk?

We just had a last-minute cancellation!

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Anže @anze3db.pecar.me · Jul 16

I have not but I also haven’t done much with async Django either 🤷‍♂️

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Reposted by Anže

Django @djangoproject.com · Jul 13

Happy 20th birthday Django! 💝🎂🎉

www.djangoproject.com/weblog/2025/...

Our open source journey started 20 years ago today, on July 13th 2005. Come celebrate this big milestone at one of our many community events this year

#Python #Django #OpenSource #DjangoBirthday

Happy 20th birthday Django!

Posted by Thibaud Colas & Benjamin Balder Bach on July 13, 2025

www.djangoproject.com

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