iiinova — where your digital self keeps evolving

Antonio Cuni @antocuni.bsky.social · 25/03/2026

I just published the 2nd part of the "Inside SPy" series. In this part, we will look at language semantics and what makes SPy "special" and different than CPython: phases of execution, redshifting, static typing, and metaprogramming. antocuni.eu/2026/03/25/i...

antocuni.eu

Inside SPy, part 2: Language semantics

Language semantics: phases of execution, redshifting, static typing, and metaprogramming in SPy

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Antonio Cuni @antocuni.bsky.social · 23/03/2026

20 years ago I did my first OSS commit. Turned out to be a pretty good decision :) antocuni.eu/2026/03/22/m...

antocuni.eu

My first OSS commit turns 20 today

A bit of software archaeology and a personal retrospective

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Antonio Cuni @antocuni.bsky.social · 29/10/2025

After weeks of procrastination, I finally wrote the first post in a series explaining SPy. This one focuses on why Python is slow—the gap between what the language allows and how it’s used in practice—and hints at how SPy aims to fix it: antocuni.eu/2025/10/29/i...

antocuni.eu

Inside SPy, part 1: Motivations and Goals - Antonio Cuni's blog

Antonio Cuni's blog

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Antonio Cuni @antocuni.bsky.social · 06/10/2025

The SPy project is kicking off community calls! 🎙️ Join us tomorrow (Oct 7th, 17:30 CEST) on Discord to chat, ask questions, and meet other SPy folks. Everyone’s welcome! 💚 🥸 Discord link: discord.gg/ZN4afjvq?eve... Google calendar link: lnkd.in/d3U62QNn

discord.gg

Join the SPy lang Discord Server!

Check out the SPy lang community on Discord - hang out with 43 other members and enjoy free voice and text chat.

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Antonio Cuni @antocuni.bsky.social · 24/09/2025

Last week I was lucky to take part in the CPython Core Dev Sprint. This is a summary of what I did, including an annotated and extended version of my talk on tracing JITs in real-world Python scenarios, plus some comparisons between PyPy’s JIT and CPython’s new JIT. 👉 antocuni.eu/2025/09/24/t...

antocuni.eu

Tracing JITs in the real world @ CPython Core Dev Sprint

My experience at the CPython Core Dev Sprint

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Antonio Cuni @antocuni.bsky.social · 25/08/2025

Accessing `obj.x` in Python might look trivial — but under the hood lies a surprisingly intricate chain of logic. I wrote an annotated walkthrough of the CPython source code that makes it all happen: antocuni.eu/2025/08/25/i...

antocuni.eu

Inside CPython's attribute lookup - Antonio Cuni's blog

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Antonio Cuni @antocuni.bsky.social · 07/07/2025

🛑⚠️ Claude code modified my .bashrc without asking? ⚠️🛑 It seems to that during an automatic update, claude sneakily modified my ~/.bashrc to remove an alias to itself. I didn't ask my permission, it didn't notify me of the change. I find it completely unacceptable. antocuni.eu/2025/07/07/c...

antocuni.eu

Claude code modified my .bashrc without asking? - Antonio Cuni's blog

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Antonio Cuni @antocuni.bsky.social · 31/05/2025

Yesterday I talked about SPy at @pyconit.bsky.social Links to slides & videos here: antocuni.eu/2025/05/31/s...

antocuni.eu

SPy @ PyCon IT 2025

Slides of the talk

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Antonio Cuni @antocuni.bsky.social · 23/05/2025

My language is brand new and experimental, but they already named a museum after it github.com/spylang/spy

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Antonio Cuni @antocuni.bsky.social · 16/03/2025

I'm having mixed results with claude code. It seems very good at "easy tasks", but the most annoying thing is that it has the tendency to not follow my instructions and do "what it wants". TL;DR: I put instructions in `CLAUDE.md` but it tends to forget about them: antocuni.eu/2025/03/16/t...

antocuni.eu

Tales with claude code: how to make it behave? - Antonio Cuni's blog

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Antonio Cuni @antocuni.bsky.social · 12/03/2025

I wrote a small tool to automatically record all my "claude code" sessions and export them into easily shareable HTML: github.com/antocuni/cla... Example log: antocuni.github.io/files/claude...

github.com

GitHub - antocuni/claude-logging: Automatically log claude sessions, and export them to HTML

Automatically log claude sessions, and export them to HTML - antocuni/claude-logging

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Antonio Cuni @antocuni.bsky.social · 26/02/2025

Last week @lukasz.langa.pl and Hoot Chatham visited me on the Italian Alps for a week of hacking and winter sports. This is the report: antocuni.eu/2025/02/26/o... SPOILER ALERT: it contains tons of PRs to CPython, Pyodide and SPy.

antocuni.eu

Over the Clouds: CPython, Pyodide, and SPy

A week of hacking and winter sports in Cervinia

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Reposted by Antonio Cuni

matti-p.bsky.social @matti-p.bsky.social · 26/02/2025

Fast on the heels of the last release, I have published a PyPy v7.3.19 bug-fix release with PyPy2.7, PyPY3.10 and a beta-quality PyPy3.11. Please try it out! The complete release note is at doc.pypy.org/en/latest/re...

doc.pypy.org

PyPy v7.3.19: release of python 2.7, 3.10 and 3.11 beta, released 2025-02-26 — PyPy documentation

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Reposted by Antonio Cuni

Łukasz Langa @lukasz.langa.pl · 24/02/2025

I spent last week in Valtournenche with @antocuni.bsky.social and Hood Chatham and managed to use SPy to accelerate my #Python code in the browser. It's too early for general adoption, but not too early to get excited! lukasz.langa.pl/f37aa97a-9ea...

lukasz.langa.pl

A peek into a possible future of Python in the browser - Łukasz Langa

My Python code was too slow, so I made it faster with Python. For some definition of “Python”.

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Reposted by Antonio Cuni

Łukasz Langa @lukasz.langa.pl · 17/02/2025

SPy retreat in #Cervinia with @antocuni.bsky.social and Hood Chatham.

Three dudes in front of snowcapped mountains.

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