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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•10mo 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!

Designing AI Chip Hardware and Software

https://docs.google.com/document/d/1dZ3vF8GE8_gx6tl52sOaUVEPq0ybmai1xvu3uk89_is/view
1•matt_d•1m ago•0 comments

Pro-Worker AI

https://www.brookings.edu/articles/building-pro-worker-ai/
1•Cerchie•1m ago•0 comments

Client-Side AI React Hooks Powered by Transformers.js and Web Workers

https://github.com/baskvava/react-zero-ai
1•baskvava•2m ago•0 comments

Brazilian Age-Verification Law: I Posit It Does Not Apply to Open-Source OSes

https://www.planalto.gov.br/ccivil_03/_ato2023-2026/2025/Lei/L15211.htm
1•replooda•3m ago•1 comments

Programmable Property-Based Testing

https://arxiv.org/abs/2602.18545
1•PaulHoule•4m ago•0 comments

Yahoo Introduces MyScout, the First Personalized Homepage for AI Answers

https://www.yahooinc.com/press/yahoo-introduces-myscout-the-first-personalized-homepage-for-ai-an...
1•drtz•5m ago•0 comments

I paired NotebookLM with Claude Code, and it feels like a dream team

https://www.xda-developers.com/paired-notebooklm-with-claude-code/
1•speckx•5m ago•0 comments

Replit raises $400M at $9B valuation

https://techfundingnews.com/replit-raises-400m-9b-valuation-ai-app-building/
2•exizt88•5m ago•0 comments

Tcl's Nxtpaper 4.0 screen: A review

https://manualdousuario.net/en/tcl-nxtpaper-4/
1•rpgbr•6m ago•0 comments

Sam Altman says OpenAI will tweak its Pentagon deal after surveillance backlash

https://www.businessinsider.com/openai-amending-contract-with-pentagon-amid-backlash-mass-surveil...
1•doener•8m ago•2 comments

YouTube just approved 30-second unskippable ads for TV

https://www.androidcentral.com/apps-software/youtube/youtube-on-tv-30-seconds-unskippable-ads
1•LorenDB•8m ago•0 comments

Goldman executive says private markets clients glad about Iran war 'distraction'

https://www.ft.com/content/9232dbce-0255-4949-8c4c-ea58d86a4166
1•alephnerd•8m ago•0 comments

Most AI chatbots will help users plan violent attacks, study finds

https://www.engadget.com/ai/most-ai-chatbots-will-help-users-plan-violent-attacks-study-finds-163...
1•mikece•9m ago•0 comments

ChatGPT Took The Pentagon's Killer Robot Deal: Boycott Now

https://quitgpt.org/pentagon?link_id=2&can_id=3b2cebf422aaa35898d6d8ce17355809&source=email-week-...
2•doener•9m ago•0 comments

The Web Is a Guitar Amp Now (Literally)

https://www.silverorange.com/blog/the-web-is-guitar-amp
2•speckx•9m ago•0 comments

The Bay Area Considers the Unthinkable: Life Without BART

https://www.nytimes.com/2026/03/10/us/bart-bay-area-san-francisco-transit.html
1•radley•10m ago•0 comments

ChatGPT Uninstalls Skyrocket

https://twitter.com/SensorTower/status/2029250034772963513
1•doener•10m ago•0 comments

Show HN: AgentSign – Zero trust for AI agents (OWASP-aligned)

https://agentsign.dev
1•AskCarX•11m ago•0 comments

Testers Still Needed?

1•AtulThakor333•11m ago•1 comments

Vectorless RAG Using Neo4j and Agentic Routing

https://github.com/TejasS1233/vectorless_RAG
1•Tejas1233•11m ago•0 comments

Ask HN: Does AI make your product better?

1•brodouevencode•11m ago•0 comments

Tilly Norwood music video is so bad; AI won't be putting actors out of work

https://www.latimes.com/entertainment-arts/story/2026-03-11/tilly-music-video-bad-ai-actors-out-o...
1•jaredwiener•11m ago•1 comments

AI Paranoia: A Conspiracy of Incentives

https://www.jernesto.com/articles/ai_paranoia
2•ponzusouce•12m ago•0 comments

Space Jellyfish Predictor

https://jellyfish.johnkrausphotos.com/
2•LorenDB•13m ago•0 comments

Show HN: Vanilla JavaScript refinery simulator built to explain job to my kids

https://fuelingcuriosity.com/game.html
6•fuelingcurious•13m ago•1 comments

Redgifs Downloader

https://redgifsdownloader.cc/
1•amazingrobin•16m ago•1 comments

Fungal Electronics

https://arxiv.org/abs/2111.11231
2•byt3h3ad•17m ago•1 comments

Fault Tolerance Benchmark: Clockwork TorchPass, TorchFT and Checkpoint Restart

https://clockwork.io/blog/keeping-distributed-training-running-through-failures/
2•danzheng•18m ago•1 comments

Using local LLM models vs. APIs

https://crimede-coder.com/blogposts/2026/LocalvsAPI
1•apwheele•18m ago•0 comments

Klaus Programmieren – "Official" German Coding Assistant

https://klausprogrammieren.com/
3•luplex•19m ago•2 comments