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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•1y 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!

Anthropic Says Its Market Is $30T, Same as US GDP

https://247wallst.com/investing/2026/08/26/anthropic-says-its-market-is-30-trillion-same-as-us-gdp/
1•mgh2•5m ago•0 comments

General resolution: LLM usage in Debian: Results

https://lists.debian.org/debian-devel-announce/2026/08/msg00005.html
1•ckastner•7m ago•0 comments

Show HN: Lexino - Build five-letter words with letter dominoes

https://github.com/skorotkiewicz/lexino
1•modinfo•8m ago•0 comments

A Cyanometer and a Cloud Colourimeter

https://byopiapress.wordpress.com/2024/05/19/a-cyanometer-and-a-cloud-colourimeter/
1•Kaibeezy•9m ago•0 comments

Anthropic tells investors annualized revenue run rate climbed to $65B in July

https://www.cnbc.com/2026/08/17/anthropic-says-annualized-revenue-climbed-to-65-billion-in-july.html
1•mgh2•11m ago•1 comments

Infinite Slop

https://infiniteslop.ai/
1•mellosouls•14m ago•0 comments

12TB Steam leak exposes old game builds from 2003 to 2013

https://videocardz.com/newz/12tb-steam-leak-exposes-old-game-builds-from-2003-to-2013
1•Tiberium•14m ago•0 comments

Plainqr: A QR generator as one self-contained file, no tracking

https://raw.githack.com/EltonCherrington/plainqr/main/plainqr.html
1•memctlagent2026•19m ago•0 comments

Brits would quite like their private messages to stay private

https://www.theregister.com/security/2026/08/30/turns-out-brits-would-quite-like-their-private-me...
13•defrost•23m ago•2 comments

Inside the Goodyear Blimp: Everything You Wanted to Know [video]

https://www.youtube.com/watch?v=wQn95Ojw8hM
1•skibz•24m ago•0 comments

Garfield Gets Existential (2019)

https://www.reddit.com/r/comicstriphistory/comments/bai1js/garfield_gets_existential_that_time_in...
1•robin_reala•29m ago•0 comments

The Future of Custom Software in Enterprise

https://www.xclick-ltd.com/blog/future-of-software
1•Bolice•29m ago•0 comments

LLM Usage in Debian: General Resolution Results

https://www.debian.org/vote/2026/vote_002#outcome
2•s20n•34m ago•0 comments

Faster, higher, funnier: what we learned from China's robot games

https://www.theguardian.com/news/ng-interactive/2026/aug/29/hilarity-unease-and-relief-games-show...
1•sbulaev•42m ago•0 comments

Deep Learning Is Not So Mysterious or Different

https://arxiv.org/abs/2503.02113
1•Anon84•43m ago•0 comments

The AI Delegation Audit Webinar, October 6, 2026

https://berlin-product-people.com/ai-delegation-audit-webinar/
1•swolpers•48m ago•0 comments

Vibe-Coding a Memory Tool for Agents: Confronting Unsolved Philosophical

https://arbustoemchamas.substack.com/p/i-naively-tried-vibe-coding-a-memory
1•birdculture•48m ago•0 comments

Reverse Engineering Unknown File Formats with ImHex

https://werwolv.net/posts/file_format_reverse_engineering/
3•WerWolv•50m ago•0 comments

Inhomogeneous Einstein metrics on complex projective spaces

https://arxiv.org/abs/2608.16880
1•fodmap•51m ago•0 comments

Arbitrary code execution in QubesOS via copy-to-VM error reporting backchannel

https://www.qubes-os.org/news/2026/08/29/qsb-118/
12•vntok•57m ago•1 comments

How to Build a Production-Grade Pipeline in Python

https://www.freecodecamp.org/news/the-etl-pipeline-handbook-how-to-build-a-production-grade-pipel...
2•twilight-code•58m ago•0 comments

GTP 5.6 Sol might be just a tad too proactive

https://taoofmac.com/space/notes/2026/08/28/2130#addendum-apparently-it-can-ship-things-now
1•rcarmo•1h ago•0 comments

Switzerland sees hottest and driest summer on record

https://www.swissinfo.ch/eng/climate-adaptation/switzerland-sees-hottest-and-driest-summer-on-rec...
2•theanonymousone•1h ago•0 comments

Memctl: Versioned memory for your coding agent (Claude.md / AGENTS.md)

https://github.com/EltonCherrington/memctl
2•memctlagent2026•1h ago•0 comments

Large language models take the original politicalcompass.org test

https://aipolcom.net/
1•mozey•1h ago•0 comments

Creepy Crawlies

https://people.kernel.org/monsieuricon/creepy-crawlies
2•jay_kyburz•1h ago•0 comments

AI Effect

https://en.wikipedia.org/wiki/AI_effect
3•o4c•1h ago•0 comments

Longest Straight Line Paths on Water or Land on the Earth (2018)

https://arxiv.org/abs/1804.07389
28•joebig•1h ago•5 comments

UK has billions in contracts with firms tied to illegal Israeli settlemets

https://www.aljazeera.com/news/2026/8/28/uk-has-billions-in-contracts-with-firms-tied-to-illegal-...
4•0x54MUR41•1h ago•0 comments

Webdump HTML to plain-text converter

https://codemadness.org/webdump.html
2•hskimse•1h ago•0 comments