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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!

American Express Publishes Intent Intelligence Framework for Agentic Commerce

https://www.americanexpress.com/en-us/newsroom/articles/innovation/intent-intelligence-framework-...
1•jonbaer•1m ago•0 comments

Grand Theft Auto VI's PC release is slated for Q1 2027

https://gamesbeat.com/grand-theft-auto-vis-pc-release-is-slated-for-q1-2027/
1•benkan•1m ago•0 comments

Show HN: Agent-trials – a smoke-test runner for coding agent CLIs

https://github.com/princejain756/agent-trials
1•princejain756•3m ago•0 comments

Star Is About to Explode – Sixty Symbols [video]

https://www.youtube.com/watch?v=vmnkcrnVmIs
2•DoctorOetker•5m ago•2 comments

NetBSD may have found a new role: The AI-free FOSS OS

https://www.theregister.com/os-platforms/2026/10/13/netbsd-may-have-found-a-new-role-the-ai-free-...
2•pjmlp•7m ago•0 comments

Why is every rationalist blog post way too long?

https://alexwennerberg.com/blog/2026-10-13-long.html
2•epestr•11m ago•0 comments

Character.ai's Bankruptcy Documents Show the Economics of AI Don't Work

https://www.404media.co/character-ais-bankruptcy-documents-show-the-economics-of-ai-dont-work/
2•beardyw•13m ago•0 comments

A JPEG, a Race, and a Ghost: Breaking Discourse's Image Pipeline

https://www.slcyber.io/research/a-jpeg-a-race-and-a-ghost-breaking-discourses-image-pipeline
2•wondersky•14m ago•0 comments

ASML, Zeiss say Hyper-NA technology may be ready in 10 years

https://www.reuters.com/business/asml-zeiss-say-next-generation-chipmaking-technology-may-be-read...
2•mfiguiere•16m ago•0 comments

LLMs Are Turing-Complete

https://yager.io/neural/turing/turing.html
1•vismit2000•17m ago•0 comments

How long will humans be needed for translation?

https://www.bbc.com/news/articles/c1wxdjx27ypo
1•theanonymousone•17m ago•0 comments

Anthropic conjures threat that doesn't exist yet to stoke fears of AI apocalypse

https://www.theregister.com/ai-and-ml/2026/10/13/anthropic-conjures-another-threat-that-doesnt-ex...
10•beardyw•20m ago•3 comments

Disney strikes $20M deal for Character.ai's assets

https://www.latimes.com/business/story/2026-10-13/disney-strikes-20-million-deal-for-character-ai...
1•jaredwiener•20m ago•0 comments

Show HN: Chrome extension that flags propaganda techniques locally

https://propalens.com/
1•guidons•22m ago•0 comments

Floco: Using Nix to put NPM and Yarn in a coffin

https://github.com/alex-ameen/floco
1•harporoeder•23m ago•0 comments

Show HN: Caesarcipher.org

https://caesarcipher.org/
2•gymitat•27m ago•0 comments

Israeli producer had access to data harvested by Poland using Pegasus spyware

https://notesfrompoland.com/2026/10/12/israeli-producer-had-access-to-data-harvested-by-poland-us...
2•botanical•27m ago•0 comments

LeanLLM: An LLM SDK for applications written in Lean 4

https://github.com/theoriclabs/leanllm
1•hargup•28m ago•0 comments

Blasting the Air in Front of Hypersonic Vehicles with Lasers Could Unlock (2020)

https://www.twz.com/33859/blasting-the-air-in-front-of-hypersonic-vehicles-with-lasers-could-unlo...
1•petermcneeley•28m ago•0 comments

OpenAI employee arrested after recording device found in office

https://www.theguardian.com/technology/2026/oct/13/openai-employee-arrested-hidden-recording-device
1•beardyw•28m ago•0 comments

The deletion of 130M names. Why Indian voters are on the streets

https://www.theguardian.com/world/2026/oct/14/india-protests-election-commission-gyanesh-kumar
2•geox•29m ago•0 comments

Houthis expose limits of Saudi Arabia's arsenal

https://www.ft.com/content/afa0a322-ad2a-4d49-aa0e-81f15a01c3a7
1•JumpCrisscross•29m ago•0 comments

Getting Canceled – Andrew Kelley [video]

https://www.youtube.com/watch?v=5zIOfBLQ3U4
2•damien•30m ago•0 comments

GitDrive – private GitHub repos as an encrypted, iCloud-style Finder drive

https://github.com/deeeeone/gitdrive
2•deeeone•32m ago•0 comments

U.S. World War II veterans are fading from living memory

https://www.randalolson.com/2026/06/01/wwii-veterans-fading/
4•someperson•41m ago•0 comments

Neurochat Running on Community GPUs

https://chat.neurogrid.cc/#endpoint=https://occurrence-advantages-venues-appearance.trycloudflare...
2•cheyodev•45m ago•0 comments

Visiting Taiwan with Jensen Huang – Lex Fridman

https://www.youtube.com/watch?v=FGCP2F_7rQk
2•vismit2000•46m ago•0 comments

Show HN: Geometry Check, a Fusion 360 add-in that finds slightly-wrong geometry

https://github.com/andyd/geometry-check
2•andydee•47m ago•0 comments

Show HN: A personal website built around phone movement and spatial UI

https://marcolavielle.com/
1•marcoalfonso•49m ago•0 comments

Experts urge parents to prepare kids for possible livestreamed execution

https://apnews.com/article/execution-live-stream-livestream-children-trauma-elections-ab5723a0fc0...
7•benwerd•50m ago•0 comments