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Show HN: Reaktiv – I built Excel-like reactive programming for Python

https://bui.app/when-frontend-reactivity-meets-backend-python-the-story-of-my-first-1-000-download-library/
2•buibuibui•9mo ago
Hi HN! I created Reaktiv, a Python library bringing reactive programming to the backend world that recently hit 1,000+ monthly downloads.

I'm actively promoting it because I believe signal-based reactivity (a concept that spread rapidly in frontend development) has huge untapped potential in Python. My breakthrough came when I stopped describing it as "Angular signals for Python" and started calling it "Excel-like computation graphs" - suddenly Python developers understood the value.

The library automatically tracks dependencies between computations, only recalculating values when dependencies change. This eliminates manual dependency tracking, prevents synchronization bugs, and reduces cognitive load when managing complex state.

Interestingly, I've noticed some initial interest from data scientists, though I'm still exploring what specific problems it might solve for them. I also believe the Home Assistant/IoT communities could benefit greatly from this approach.

Would love your thoughts on bringing frontend patterns to backend development!

Speed Can Reindustrialize America

https://www.austinvernon.site/blog/manufacturing.html
1•mfiguiere•11s ago•0 comments

Show HN: ContextLedger – CLI to track and handoff context b/w AI coding sessions

https://github.com/manthan787/context-ledger
1•EmTekker•35s ago•0 comments

Possible identification of the Luna 9 Moon landing site using machine learning

https://www.nature.com/articles/s44453-025-00020-x
1•marcodiego•2m ago•0 comments

New and Upcoming IRCv3 Features

https://libera.chat/news/new-and-upcoming-features-3
1•iamnothere•2m ago•0 comments

Karma Engineering

https://aimlbling-about.ninerealmlabs.com/blog/karma-engineering/
1•namnnumbr•3m ago•1 comments

With Apple: Fortify your app: Essential strategies to strengthen security

https://developer.apple.com/events/view/TUHA23T82K/dashboard
2•pjmlp•6m ago•0 comments

AI analysis for UK Parliament bills

https://ukparliament.vercel.app/
1•ArisC•8m ago•0 comments

iPhotron 4.10 Is Released

https://github.com/OliverZhaohaibin/iPhotron-LocalPhotoAlbumManager/releases/tag/v4.1.0
1•main-protect•9m ago•0 comments

Court orders Acer and Asus to stop selling PCs in Germany over H.265 patents

https://videocardz.com/newz/acer-and-asus-are-now-banned-from-selling-pcs-and-laptops-in-germany-...
2•ledoge•9m ago•0 comments

The Prompt of Babel

https://joemclean.github.io/writing/the-prompt-of-babel.html
1•jjjjjjjjoe•11m ago•3 comments

How Can Something Fall Faster Than Gravity? [video]

https://www.youtube.com/watch?v=dosAbCCKXLs
1•zahlman•13m ago•0 comments

Top AI SDR tools analysis

https://revenuesystemslab.substack.com/p/ai-sdr-tools
1•Atbech•14m ago•0 comments

Pentagon threatens to cut off Anthropic in AI safeguards dispute

https://www.reuters.com/technology/pentagon-threatens-cut-off-anthropic-ai-safeguards-dispute-axi...
1•MKais•14m ago•0 comments

Baseband, Bessel and Beyond

https://www.youtube.com/watch?v=0GjWRQMFVA8
1•michh•15m ago•0 comments

Addicted to your phone? Try "bricking" it

https://economist.com/culture/2026/02/15/addicted-to-your-phone-try-bricking-it
1•andsoitis•16m ago•0 comments

Codeberg is why developers are broke

https://sharemygit.com/
2•onesandofgrain•23m ago•1 comments

Show HN: Claude-relais – A plan/build/judge loop mixing Claude with Cursor

https://github.com/clementrog/claude-relais
1•crog•24m ago•0 comments

Can agentic coding raise the quality bar?

https://lpalmieri.com/posts/agentic-coding-raises-quality/
2•LukeMathWalker•24m ago•1 comments

Learning Kubernetes with the official docs and NotebookLM

https://randomwrites.com/
1•mutahirs•25m ago•0 comments

List of Sports Clichés

https://en.wikipedia.org/wiki/List_of_sports_clich%C3%A9s
1•carlos-menezes•25m ago•0 comments

State Attorneys General Want to Tie Online Access to ID

https://reclaimthenet.org/40-attorneys-general-back-ids-online-safety-act
21•computerliker•27m ago•9 comments

Python Fiddle – Online Python IDE, Compiler, and Interpreter

https://python-fiddle.com
2•Curiositry•27m ago•0 comments

Large Language Model Reasoning Failures

https://arxiv.org/abs/2602.06176
1•kawera•28m ago•0 comments

When Your Ally Turns Narcissistic: Manual for Navigating Transatlantic Relations

https://gppi.net/2025/10/12/when-your-ally-turns-narcissistic
3•rendx•30m ago•1 comments

The Second Half of the Chessboard

https://joshs.bearblog.dev/the-second-half-of-the-chessboard/
2•psychedare•34m ago•1 comments

Peter Steinberger: I need AI that scans every PR and Issue and de-dupes

https://twitter.com/steipete/status/2023057089346580828
1•vibeprofessor•35m ago•0 comments

Show HN: VOOG – Moog-style polyphonic synthesizer in Python with tkinter GUI

https://github.com/gpasquero/voog
6•gpasquero•35m ago•1 comments

Accessibility Is All You Need – Why agent protocols for the web are redundant

https://github.com/webmachinelearning/webmcp/issues/91
2•lulzx•36m ago•1 comments

Miller – CLI tool for querying, shaping, and reformatting data in many formats

https://miller.readthedocs.io/en/6.16.0/
4•smartmic•36m ago•0 comments

What Happened in El Paso? – By James Fallows

https://fallows.substack.com/p/what-happened-in-el-paso
2•MaysonL•37m ago•0 comments