Python: introducing profiling-explorer - Adam Johnson I’ve made another package! Like icu4py, which I made in February, it was sponsored by my client Rippling. And like tprof, which I made in January, it’s a profiling tool!

✍️ New post introducing profiling-explorer, a tool for exploring Python profiling data (pstats files).

Use it with the classic cProfile (now called profiling.tracing) or Python 3.15’s new sampling profiler, Tachyon (profiling.sampling).

adamj.eu/tech/2026/04...

#Python

Glad to help!

The cool kids seem to be trying out prek now, though… prek.j178.dev I've yet to dip my toes.

Running IPython today gives you the tip "Happy International Transgender Day of Visibility! You are valid. You matter."

Nice IPython Easter Egg! 🏳️‍⚧️

#TransDayOfVisibility #Python

I've just done a pass over a client project with deptry, and it worked great for finding unused dependencies!

deptry.com

#Python

A billionaire can get what they want with one donation to a political party. The rest of us must fight for years to get even the most basic rights recognised. Money destroys democracy, more than any other cause. The first step towards a better world is to stop the rich buying political outcomes.

Docs: `import datetime as dt` in examples (#145315) · python/cpython@d3b6faf

Wow, thanks @hugovk.dev for making my "import datetime as dt" recommendation official in the Python docs, with a link to my blog!

github.com/python/cpyth...

#Python

I was somewhat hopeful for pyx and maybe a CI service. Ah well…

Genius!

Excite!

Chekhov's Gun - TV Tropes Russian writer Anton Chekhov, master of the short story, gave this advice: If it's not essential, leave it out of the narrative. The term has come to mean any object that later turns out to be importa...

Enjoy reasing this wiki that names many such storytelling tropes tvtropes.org/pmwiki/pmwik...

PEP 827 – Type Manipulation | peps.python.org We propose adding powerful type-level introspection and construction facilities to Python’s type system. This design is inspired largely by TypeScript’s conditional and mapped types, but is adapted to...

Very interesting PEP that could unlock a clear way to type Django’s ORM

peps.python.org/pep-0827/

#Django #Python

Thanks, and wow, that is not good!

“The awful biomass” - have you got any deeper link on *how* bad it is?

a kind of boner'd I never thought I'd be

You only live 1+ times

Camberwell done mate

Nice, I always like a good cleanup. I use daisydisk, somehow a pie chart helps my brain more than rectangular areas.

Django: profile memory usage with Memray - Adam Johnson

[Articles] Django: profile memory usage with Memray

Use Memray to profile Django startup, identify heavy imports like numpy, and reduce memory by deferring, lazy importing, or replacing dependencies. #djangonews

adamj.eu/tech/2026/0...

Use this package to split text into characters/words/sentences/lines, or to flexibly translate strings around complex pluralization rules.

The post includes some musings on my “agentic engineering” approach to building the package.

Python: introducing icu4py, bindings to the Unicode ICU library - Adam Johnson I made a new package! Thank you to my client Rippling for inspiring and sponsoring its development.

✍️ New post introducing icu4py: Python bindings to ICU (International Components for Unicode), the official translation and localization library from Unicode.

adamj.eu/tech/2026/02...

#Python #AI #i18n #l10n

Bonne voyage!

Yay, my packages django-htmx and django-rich are now receiving income through Tidelift. Thanks, Tidelift and its subscribers! 🚀

boiled, pan-fried, and grilled

Django: profile memory usage with Memray - Adam Johnson Memory usage can be hard to keep under control in Python projects. The language doesn’t make it explicit where memory is allocated, module imports can have signficant costs, and it’s all too easy to c...

✍️ New post on using Memray to profile the memory usage of a Django project.

You can use this tool to find and eliminate memory-costly lines of code. The example in the post finds and removes a costly import, reducing startup time.

adamj.eu/tech/2026/01...

#Django #Python

Yay, they covered tprof! 🎯

A carton of four “Giga” apples (tagline: “mighty good”)

A packet of ~60 giga bites

Python: introducing tprof, a targeting profiler - Adam Johnson Profilers measure the performance of a whole program to identify where most of the time is spent. But once you’ve found a target function, re-profiling the whole program to see if your changes helped ...

✍️ New post introducing tprof, a new targeting profiler for Python 3.12+ that measures only specified functions.

Use tprof to measure the impact of a few functions without adding overhead to the whole program.

adamj.eu/tech/2026/01...

#Python

You got this!! 💪

There’s probably a bunch of low-hanging fruit sitting around on various code paths like this…

Fixed #36858 -- Optimized `Field._get_default()` for `db_default` case. by adamchainz · Pull Request #20526 · django/django Trac ticket number ticket-36858 Branch description Create and share a single instance of DatabaseDefault instead of making a new one each time the lambda is called. The quick benchmark on the ticke...

Made a nice optimization for Model.objects.bulk_create() with fields using db_default, ~12% in one quick benchmark:

github.com/django/djang...

#Django