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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!

CJEU Judgment on Knowledge of Foreign Copyright Laws and Geoblocking Measures

https://blog.ericgoldman.org/archives/2026/07/cjeu-judgment-on-geoblocking-standards-for-knowledg...
1•hn_acker•1m ago•1 comments

Toast IDE Gets Markdown Spell Checking

https://github.com/paradise-runner/toast
1•dividedcomet•1m ago•0 comments

Ask HN: Any tips for a college freshman enrolled in computer science?

1•NotParth11•2m ago•0 comments

The NUMBER – trusted number infrastructure

https://rounded.lol/
1•thunderbong•3m ago•0 comments

Burn Their Money –> Humans and Freedom

https://github.com/peterlodri-sec/burn-em-bitches-money
1•pocok0xRE•3m ago•0 comments

Not just Neanderthals: Ghost lineage in Africa left its mark on our DNA

https://arstechnica.com/science/2026/07/not-just-neanderthals-ghost-lineage-in-africa-left-its-ma...
1•Brajeshwar•4m ago•0 comments

Playing Original Xbox Game Discs on a PC. Real Backward Compatibility

https://gdox.korze.org/wtf/
1•korze•5m ago•1 comments

Ls-guard: generate and audit Postgres/Supabase RLS from a spec

https://github.com/greyrow/rls-guard
1•greyrow•9m ago•0 comments

Show HN: DSCode – Coding Agent Powered by DeepSeek

https://dscode.ai/
1•qwikhost•10m ago•0 comments

Single-file Ada 83 LLVM compiler

https://github.com/AdaDoom3/Ada83/tree/main
1•roger23•10m ago•1 comments

Fidelity Is Not Safety: Compressed LLMs Pass Quality Guards yet Invent

https://arxiv.org/abs/2607.28196
1•sbulaev•10m ago•0 comments

A few simple tricks for building chatbots with nice UX

https://christopherkrapu.com/blog/2026/simple-things-ai-engineering/
1•ckrapu•13m ago•0 comments

What If We Can Never Trust A.I.?

https://www.newyorker.com/culture/open-questions/what-if-we-can-never-trust-ai
1•replatformradar•13m ago•0 comments

"Bettering Myself" by Ottessa Moshfegh

https://electricliterature.com/bettering-myself-ottessa-moshfegh/
2•js2•14m ago•0 comments

Reaping the Whirlwind – Inside the Potomac River Midair Collision

https://admiralcloudberg.medium.com/reaping-the-whirlwind-inside-the-potomac-river-midair-collisi...
2•sklargh•18m ago•0 comments

Libadwaita: Splitting GTK and Design Language

https://tesk.page/2024/06/03/libadwaita-splitting-gtk-and-design-language/
1•mariuz•20m ago•0 comments

Fuse Programming Language

https://fuselang.org
1•the_unproven•20m ago•0 comments

Archaeologists Find Ancient Glyphs in the Amazon

https://www.nytimes.com/2026/07/31/world/americas/amazon-archaeology-geoglyphs.html
1•wglb•22m ago•1 comments

The Age of Technology Companies

https://shxxxjin.substack.com/p/the-age-of-technology-companies
1•brainer•27m ago•0 comments

docs: Add AI Section to CONTRIBUTING.md

https://github.com/thelounge/thelounge/pull/5130/files
1•MaxLeiter•28m ago•0 comments

LLMs Can Infer Political Alignment from Online Conversations

https://arxiv.org/abs/2603.11253
1•Anon84•28m ago•0 comments

Technical Deep Dive into the Entropy Issue

https://blog.coinkite.com/entropy-technical-backgrounder/
1•janandonly•28m ago•1 comments

Official ModRetro M64 Deep Dive: Console, Controller, Games [video]

https://www.youtube.com/watch?v=9gOJUEcKYRk
1•nomilk•29m ago•1 comments

Open Hardware and Free Software: Teufel Mynd, a Case Study

https://fsfe.org/news/2026/news-20260629-01.html
1•smartmic•33m ago•1 comments

Drones offer alternative to balloons for weather research

https://www.theguardian.com/news/2026/jul/31/weatherwatch-drone-base-station-offers-alternative-w...
1•arnejenssen•33m ago•0 comments

Fetch Needs Error Codes

http://www.jasnell.me/posts/fetch-needs-error-codes
1•meysamazad•33m ago•0 comments

Reviewing finished tasks from last week in org-agenda and Emacs

https://ashishpanigrahi.com/blog/done-items-org-agenda/
1•meysamazad•35m ago•0 comments

List of Style Guides

https://en.wikipedia.org/wiki/List_of_style_guides
1•dredmorbius•35m ago•1 comments

Show HN: Rad – A New Relational Database

https://www.radengine.dev/
1•Southclaws•41m ago•0 comments

A Scriptable 3D Graph Visualization

https://verticesandedges.net/?nburl=./examples/Cube.ipynb
1•countgraph•44m ago•0 comments