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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!

Alwide – An Open-Source Lightweight TUI IDE in C with Mouse, LSP and Tree-sitter

https://github.com/arnauda-gh/Alwide
1•peter_d_sherman•2m ago•0 comments

You won't believe the stupid shit the Pentagon puts in diplomats' system prompts

https://www.youtube.com/watch?v=5HBTCT4FmAc
1•logicallee•3m ago•1 comments

Virginia Orders Data Centers to Pay for Dedicated New Electric Infrastructure

https://www.realtor.com/news/real-estate-news/virginia-data-center-electric-infrastructure-spanbe...
1•mapping365•5m ago•0 comments

Democratic lawmakers propose 3-year moratorium on new data centers in Oregon

https://oregoncapitalchronicle.com/2026/08/04/democratic-lawmakers-propose-three-year-moratorium-...
2•ChrisArchitect•5m ago•1 comments

A Universal Theory of Brain Function [video]

https://www.youtube.com/watch?v=iPj9D9LgK2A
2•binyu•7m ago•0 comments

Multi-GPU Kernels, Intelligence per Watt, Heterogeneous Inference, and More [video]

https://www.youtube.com/watch?v=n8dz2FX0_uY
1•gmays•8m ago•0 comments

RF Filter Design for ESP32-S3, Part 1: The Ideal Filter and First Layout

https://dispatch.altivlabs.com/esp32-s3-rf-filter-design-part-1/
1•yourstruly-br•10m ago•0 comments

LLMs won't break symmetric crypto

https://www.bfswa.blog/p/llms-wont-break-symmetric-crypto
1•rowbin•16m ago•0 comments

I found my first users from conversations happening online

https://agenmatic.ai/
2•Nancylily•18m ago•0 comments

I Built a Blog and Forgot to Write

https://benjcal.space/blog/i-built-a-blog-and-forgot-to-write/
3•roryokane•21m ago•0 comments

The Most Arrogant Science Book Ever Written [video]

https://www.youtube.com/watch?v=fO9iRDPXvT4
3•yomismoaqui•21m ago•0 comments

Show HN: Clean up ugly articles for nicer reading experience

https://leidnedya.github.io/markweb/
2•otherayden•22m ago•1 comments

Sony scales up its PlayStation advertising ambitions

https://digiday.com/media-buying/sony-is-scaling-up-its-playstation-advertising-ambitions/
2•OptionOfT•23m ago•0 comments

Show HN: Hacker News with reduced priority for AI driven content

https://hn-without-ai.vercel.app/
1•otherayden•24m ago•0 comments

Elon Musk's attempt at an AI Wikipedia hasn't been updated in months

https://www.theverge.com/ai-artificial-intelligence/976004/elon-musk-grokipedia-ai-wikipedia-not-...
6•ent101•24m ago•0 comments

Show HN: Bananas aren't supposed to be tingly?

1•danhon•25m ago•0 comments

The Nature of the Club

https://demonstrandom.com/essays/posts/theory_of_the_club/
1•demonstrandom•25m ago•1 comments

The Next Token – LLMs, from the Beginning

https://ceres1.space/posts/llms-from-the-beginning/the-next-token/
1•coder543•27m ago•1 comments

Truth Social's Early-Access Scheme Is Indefensible

https://www.nationalreview.com/2026/08/truth-social-early-access-scheme-is-indefensible/
3•petethomas•29m ago•0 comments

Ukraine releases footage of forest covered in fiber-optic drone cables [video]

https://www.youtube.com/watch?v=FaEAxZ7Sr0I
1•uzyn•32m ago•0 comments

Are Consumers Using Agents?

https://twitter.com/joshm/status/2084751187002458369
1•anr0•32m ago•1 comments

Prompt Chains, Tool Calling, and MCP: How AI Agents Do Things

https://i.brandanthonymcdonald.com/mcp-for-beginners
1•aweful•37m ago•0 comments

You only have 3B heartbeats

https://twitter.com/anishthite/status/2085117211208015990
1•aquajet•38m ago•0 comments

Bessent Declares Widening Gap Between Rich and Poor 'Dead'

https://www.nytimes.com/2026/08/05/business/bessent-wage-gap.html
2•mapping365•41m ago•0 comments

Trump Has Called Warsh Repeatedly Since He Became Fed Chair

https://www.wsj.com/politics/policy/trump-has-called-warsh-repeatedly-since-he-became-fed-chair-3...
3•mapping365•42m ago•0 comments

What Victorian Bootmakers Can Teach Us About the Future of Work

https://newsletter.platypuseconomics.com/p/what-victorian-bootmakers-can-teach
2•jhealy•43m ago•0 comments

SKKU Researchers Develop Catalyst to Convert CO2 into Ethanol Using Electricity

https://www.asiaresearchnews.com/content/skku-researchers-develop-new-catalyst-convert-carbon-dio...
1•rguiscard•45m ago•0 comments

Pull contents from any page via API and avoid Same-origin policy problems

https://allorigins.win/
1•chenster•47m ago•0 comments

Cloudflare OS is an architecture of distrust

https://lord.technology/2026/08/05/cloudflare-os-is-an-architecture-of-distrust.html
2•elicash•48m ago•0 comments

The Aviation Herald was sued

https://avherald.com/h?article=53c8958a&opt=0
5•gilthelander•49m ago•0 comments