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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!

ClassicPress 2.7.0 Release Notes

https://forums.classicpress.net/t/classicpress-2-7-0-release-notes/6512
2•ethanpil•2m ago•0 comments

Robotics Needs Fewer Roboticists

https://www.a16z.news/p/robotics-needs-fewer-roboticists
1•sebg•5m ago•0 comments

Migrant children detained California used as bait to arrest and deport parents

https://laist.com/news/migrant-children-southern-california-used-as-bait-to-arrest-deport-parents
1•hedora•5m ago•0 comments

The Cursive Transformer

https://greydanus.github.io/2025/03/30/cursive-transformer/
1•sebg•5m ago•0 comments

Ask HN: Did you ever consciously create technical debt?

1•philippta•6m ago•0 comments

Poker Legend and Author of 'The Theory of Poker' David Sklansky Passes Away

https://www.pokernews.com/news/2014/02/poker-legend-david-sklansky-passes-away-50722.htm
1•rurp•10m ago•0 comments

How Anthropic's Claude Thinks

https://blog.bytebytego.com/p/how-anthropics-claude-thinks
1•shric•13m ago•0 comments

Show HN: Druids – coordinate and deploy coding agents across machines

https://github.com/fulcrumresearch/druids
5•etherio•13m ago•0 comments

My story on how I created my own open source project

1•packetsniffer•15m ago•0 comments

Google is first hyperscaler to promise GW-scale power demand response

https://blog.google/innovation-and-ai/infrastructure-and-cloud/global-network/demand-response-dat...
1•khofo•22m ago•1 comments

Show HN: BallotGuessr – Guess the 2024 election margin from a Street View photo

https://ballotguessr.com
2•jiratickets•22m ago•0 comments

Constructing an LLM-Computer

https://www.percepta.ai/blog/constructing-llm-computer
1•Philpax•24m ago•0 comments

Show HN: Stella Foster – iMessage on Any Phone

https://stellafoster.com/
1•jacobgc•24m ago•0 comments

An open source benchmarking framework for IT automation

https://github.com/itbench-hub/ITBench
1•pranay01•25m ago•0 comments

A Former Anthropology Student from Los Angeles Might Be the George Lucas of AI

https://www.hollywoodreporter.com/movies/movie-news/gossip-goblin-zack-london-ai-films-watch-1236...
3•Kaibeezy•25m ago•0 comments

Air Force tanker tore up asphalt at Alaska airport with engine test

https://taskandpurpose.com/news/air-force-tanker-asphalt-accident/
1•ilamont•28m ago•1 comments

Making React ProseMirror Fast

https://handlewithcare.dev/blog/making_react_prosemirror_really_really_fast/
1•smoores•31m ago•1 comments

5 AIs. One Answer on iOS

https://apps.apple.com/us/app/pingpongit/id6758229301
1•husky8•34m ago•0 comments

Show HN: Rick – Open-source AI CEO that autonomously runs your startup

https://meetrick.ai
1•MeetRickAI•34m ago•0 comments

Running Tesla Model 3's Computer on My Desk Using Parts from Crashed Cars

https://bugs.xdavidhu.me/tesla/2026/03/23/running-tesla-model-3s-computer-on-my-desk-using-parts-...
7•driesdep•34m ago•0 comments

Ancient DNA reveals 4000 years of grapevine diversity and viticulture in France

https://www.nature.com/articles/s41467-026-70166-z
3•layer8•43m ago•0 comments

The Military Failures of Fascism

https://acoup.blog/2024/02/23/fireside-friday-february-23-2024-on-the-military-failures-of-fascism/
2•JumpCrisscross•44m ago•0 comments

Brad Feld – Quality (Essay on Zen and the Art of Motorcycle Maintenance)

https://feld.com/archives/2026/03/quality/
1•rmason•46m ago•0 comments

Health NZ staff told to stop using ChatGPT to write clinical notes

https://www.rnz.co.nz/news/national/590645/health-nz-staff-told-to-stop-using-chatgpt-to-write-cl...
23•billybuckwheat•47m ago•1 comments

Specula: A framework for finding deep bugs in system code using TLA+

https://github.com/specula-org/Specula
2•matt_d•49m ago•0 comments

Nonfiction Publishing, Under Threat, Is More Important

https://newrepublic.com/article/207659/non-fiction-publishing-threat-important-ever
1•Hooke•49m ago•0 comments

Show HN: Text2troff – automatically converts plain text to TROFF format

https://github.com/jazzfan2/text2troff
1•robtoscani•50m ago•0 comments

Silence is the KPI: agents that don't talk

https://diegodella1.github.io/chango-daily/2026/03/03/silence-is-the-kpi-agents-that-do-not-talk/
1•changobot_dg•50m ago•0 comments

China is mass-producing hypersonic missiles for $99,000

https://kdwalmsley.substack.com/p/on-sale-now-china-is-mass-producing
58•zdw•51m ago•12 comments

RedSwarm Adversarial AI security scanner, one file, zero deps

https://github.com/beee003/redswarm
1•bee003•51m ago•1 comments