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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!

EU urged to act after Pegasus infects phone of spyware inquiry MEP

https://www.theregister.com/security/2026/07/06/eus-latest-spyware-scandal-prompts-calls-for-urge...
1•Puts•36s ago•0 comments

Zhipu AI, MiniMax shares for Hong Kong investors as lock-ups end

https://www.scmp.com/business/markets/article/3359697/zhipu-ai-minimax-shares-provide-gut-check-h...
1•Alien1Being•5m ago•0 comments

The Technological Republic: Hard Power, Soft Belief, and the Future of the West

https://www.amazon.com/Technological-Republic-Power-Belief-Future/dp/0593798694
1•ronfriedhaber•5m ago•0 comments

Nvidia GPU Debt Backstop Unleashes the AI Project Trinity: Capital, Offtake [ ]

https://newsletter.semianalysis.com/p/nvidia-gpu-debt-backstop-unleashes
1•swolpers•9m ago•0 comments

Seeking feedback on a new integer factorization algorithm

https://github.com/Piunosei/factorization_nr_138132535-/tree/main
1•AlbericoLepore•10m ago•0 comments

Show HN: A free, GPU-accelerated Texas Hold'em GTO solver in C++/CUDA

https://bupticybee.github.io/texassolver_gpu_page/
1•bupticybee•12m ago•0 comments

Fable – Inner Forward Pass

https://claude.ai/public/artifacts/05b42f8b-a4a3-4a7a-9774-c5d427ada379
3•stoicfungi•12m ago•0 comments

Blog about things you don't understand yet

https://www.seangoedecke.com/blog-about-things-you-dont-understand-yet/
2•ingve•13m ago•0 comments

Proxima Fusion Raises €411M to Build Europe's Commercial Fusion Champion

https://proximafusion.com/press-news/proxima-fusion-raises-eu411-million-to-build-europes-commerc...
1•l1am0•16m ago•0 comments

Show HN: 99 Business Ideas

https://99ideas.jaksa.me/
1•jaksa•16m ago•0 comments

Generating 3D assets with AI [video]

https://www.youtube.com/watch?v=YwoPuZa8N_g
1•K0IN•16m ago•1 comments

Zero-Flow Encoders

https://arxiv.org/abs/2602.00797
1•E-Reverance•17m ago•0 comments

Romania's "Palantir": the entrepreneur selling "sovereign AI" to secret services

https://eualive.net/romanias-palantir-the-entrepreneur-selling-sovereign-ai-to-the-countrys-intel...
1•robtherobber•17m ago•0 comments

Tell HN: Fable is now credits only

1•teruakohatu•18m ago•0 comments

China chip equipment rally faces earnings test amid memory boom bets

https://www.theguardian.com/technology/2026/jul/07/ai-models-doing-things-their-creators-never-in...
1•01-_-•19m ago•0 comments

China chip equipment rally faces earnings test amid memory boom bets

https://www.scmp.com/tech/tech-trends/article/3359705/chinas-chip-equipment-rally-faces-earnings-...
1•01-_-•20m ago•0 comments

Work the Tool to Work the Thing

https://replicated.live/blog/js
1•gritzko•27m ago•0 comments

New Mass GitHub dorking tool

https://pypi.org/project/ghscan/
3•magester•27m ago•0 comments

VibeWorld – a persistent multiplayer world that lives in your terminal

https://github.com/SorBalda/vibeworld
1•sorbalda•28m ago•1 comments

The Widening Gap: The Benefits and Harms of Generative AI for Novice Programmers

https://dl.acm.org/doi/10.1145/3632620.3671116
1•ctenb•29m ago•0 comments

What AI does to the minds of novice coders [video]

https://www.youtube.com/watch?v=HTUh0OO6Kmo
1•ctenb•30m ago•1 comments

Show HN: A map of every UK company, updated monthly

https://companymap.co.uk/platform/index.html
1•optionalltd•30m ago•2 comments

FM-Synthesis in the Browser. Part 1

https://habr.com/en/articles/1053484/
1•sss1024•30m ago•0 comments

The Clouds of Hiroshima

https://doomsdaymachines.net/p/the-clouds-of-hiroshima
3•handfuloflight•31m ago•2 comments

AI 2027

https://ai-2027.com
1•StefanBatory•32m ago•0 comments

New Biological Clues Behind Coffee's Benefit to Liver Health

https://www.cedars-sinai.org/newsroom/study-new-biological-clues-behind-coffees-benefit-to-liver-...
1•littlexsparkee•34m ago•0 comments

Prediction Markets Let You Bet on Whether a Wildfire Will Burn Down Your Town

https://www.wired.com/story/prediction-markets-let-you-bet-wildfire/
1•1vuio0pswjnm7•36m ago•0 comments

Cartes.app – a free and open map, a Web alternative to Google and Apple maps

https://cartes.app
1•mistermatt•38m ago•1 comments

Riot Engineering: How VALORANT Solved Peeker's Advantage (2020)

https://www.riotgames.com/en/news/peeking-valorants-netcode
2•xeonmc•41m ago•0 comments

2027 is comming, and Siri still can't distinguish between thirteen and thirty

1•fernvenue•45m ago•1 comments