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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!

Düren's Hydrogen Bet: The Math Behind a Looming Liability

https://cleantechnica.com/2026/03/01/durens-hydrogen-bet-the-math-behind-a-looming-liability/
1•simonebrunozzi•1m ago•0 comments

Using Structured Light Scanning and Photogrammetry in Cultural Heritage

https://www.mdpi.com/2078-2489/17/3/237
1•PaulHoule•1m ago•0 comments

Financial AGI announced – outperforms human experts on 12 professional exams

https://portfoliopilot.com/technology/financial-agi
2•aharm•2m ago•0 comments

Most AI agent demos won't survive enterprise security review

1•ibreakthecloud•2m ago•0 comments

Show HN: Experiment- enforcing accessibility guardrails during AI UI generation

https://github.com/nadav-senseit/ai-accessibility-enforcement
1•nadav_senseit•3m ago•0 comments

Ask HN: Have you noticed how the number of 'Show HN' posts has skyrocketed?

1•nodivbyzero•3m ago•0 comments

CSUN Assistive Technology Conference 2026 files

https://daisy.org/news-events/articles/csun-conference-2026-files/
1•bryanrasmussen•3m ago•0 comments

Show HN: Chatddit.com Fresh off the vibe press

1•gitprolinux•4m ago•0 comments

I'm a Coin Boy, Too (2023)

https://taylor.town/coin-boys
1•surprisetalk•4m ago•0 comments

Formal Verification in the Age of AI

https://verse.systems/blog/post/2026-03-05-formal-verification-ai/
1•matt_d•4m ago•0 comments

I Love Email (2023)

https://blog.xoria.org/email/
1•surprisetalk•4m ago•0 comments

Case Study: lynnandtonic.com 2025 refresh

https://lynnandtonic.com/thoughts/entries/case-study-2025-refresh/
1•surprisetalk•4m ago•0 comments

A Day in the Life of an Enshittificator [video]

https://www.youtube.com/watch?v=T4Upf_B9RLQ
1•surprisetalk•4m ago•0 comments

Collabora at Embedded World 2026: Open-Source AI and Embedded Innovation

https://www.collabora.com/news-and-blog/news-and-events/bringing-the-ai-experience-to-embedded-wo...
1•losgehts•5m ago•0 comments

I built a real-time RER/train tracker for Paris commuters (PWA, no app store)

https://o-rer.com
2•raduvul•6m ago•1 comments

Arc Raiders – Discord SDK Data Exposure

https://timothymeadows.com/arc-raiders-discord-sdk-data-exposure/
3•esnard•7m ago•0 comments

Researchers discover Chickpeas can grow in moon dirt and make seeds

https://www.sciencenews.org/article/chickpeas-moon-dirt-seeds-space-farming
1•ck2•8m ago•0 comments

Asymmetric Goal Drift in Coding Agents Under Value Conflict

https://arxiv.org/abs/2603.03456
1•lrakster•9m ago•0 comments

Is Web Development Returning to PHP?

https://andreasyanaram.medium.com/is-web-development-quietly-returning-to-php-8dd5c3d47eee
1•ulrischa•10m ago•0 comments

Containers, but Without the Magic Part 1: Networking

https://www.nightshift.sh/blog/containers-without-magic-01
1•tensor_ninja•11m ago•0 comments

Show HN: ColdPitch – Find anyone, get a personalized cold email in seconds

https://www.coldpitch.ai
1•arishec•11m ago•0 comments

Why do elephants have such wrinkly skin?

https://www.sciencefocus.com/nature/why-do-elephants-have-such-wrinkly-skin
1•thunderbong•12m ago•0 comments

Left-handed people may have a psychological edge in competition

https://phys.org/news/2026-03-left-people-psychological-edge-competition.html
3•simonebrunozzi•12m ago•0 comments

The OpenAI Files

https://www.theverge.com/openai/688783/the-openai-files-will-help-you-understand-how-sam-altmans-...
2•MrBuddyCasino•12m ago•0 comments

Show HN: I trained a small local model to translate natural language to CLI

https://github.com/spicy-lemonade/zest-cli-infra
1•kiki_kuuki•13m ago•0 comments

How we fixed Postgres connection pooling on serverless with PgDog

https://circleback.ai/blog/how-we-fixed-postgres-connection-pooling-on-serverless-with-pgdog
2•alihaghani•13m ago•0 comments

No Cloud, No Waiting: Tool-Calling Agents on Consumer Hardware with LFM2-24B-A2B

https://www.liquid.ai/blog/no-cloud-tool-calling-agents-consumer-hardware-lfm2-24b-a2b
1•nimar•13m ago•0 comments

Kaoslabs – My Linux VPS and self-hosting experiments

https://kaoslabs.org
1•wilhart•13m ago•1 comments

Type-safe, K-sortable, globally unique identifier inspired by Stripe IDs

https://github.com/jetify-com/typeid
1•alcazar•17m ago•0 comments

Donald Trump insists there are no wind farms in China. Here are 20 in pictures

https://www.theguardian.com/us-news/gallery/2026/mar/05/pictures-china-wind-farms-trump
12•beardyw•18m ago•3 comments