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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!

Being a kid making games in the early 2000s

https://jaytholen.net/teengamedev/
1•farmerbb•1m ago•0 comments

AI isn't slop. It's just the generic average. And not you

https://www.catchkill9.dev/posts/voiceprint-open-source.html
1•lnahum•1m ago•0 comments

Omarchy 4.5 floats, speaks 50 languages, and runs on your Mac

https://omarchy.org/news/2026/11/omarchy-4-5/
2•fratellobigio•3m ago•0 comments

Altera Announces Agilex 2X, a Complete FPGA and SoC Portfolio

https://www.altera.com/newsroom/agilex-2x
2•gmays•8m ago•0 comments

How software engineering is changing: a tale of two eras

https://newsletter.pragmaticengineer.com/p/how-software-engineering-is-changing
1•duck•12m ago•0 comments

The API client microcosm of the VC shit economy

https://blog.outmanos.com/posts/the-api-client-cycle/
1•steinsgatezero•13m ago•0 comments

Show HN: Atlas Streak

https://crux.quest/atlas/
1•saretup•13m ago•0 comments

Big Tech claims voters' AI backlash is "anti-Trump" not "anti-tech"

https://arstechnica.com/tech-policy/2026/11/big-tech-claims-voters-ai-backlash-is-anti-trump-not-...
1•cdrnsf•17m ago•1 comments

Welcome to Wlroots How to make a compositor from scratch

https://nekidev.github.io/2026/11/04/1-welcome-to-wlroots-part-2.html
1•nyeki•17m ago•0 comments

Reasoning Models Can Control Their CoT When They Tell Themselves To

https://arxiv.org/abs/2610.23257https://github.com/udolev/Self-Instructed-CoT-Controllability
1•matt_d•18m ago•0 comments

Show HN: Sunlith, an Android calendar you can control through MCP

https://github.com/SunSinD/Sunlith
1•SunSinD•21m ago•0 comments

Show HN: Hosted MCP server for 16 crypto exchanges and MetaTrader 5

https://github.com/AlgoVesta/mcp
1•AlgoVesta•27m ago•0 comments

LifeVal: Evaluating AI Model Performance on Personalized Agentic Consumer Tasks [pdf]

https://cdn.openai.com/pdf/lifeval.pdf
2•pr337h4m•29m ago•0 comments

OpenAI Had 'Rough' First Half of Year Before Coding Takeoff

https://www.wsj.com/tech/openai-had-rough-first-half-of-year-before-coding-takeoff-brockman-says-...
1•nsagent•30m ago•0 comments

Critical thinking when agents do the work

https://twitter.com/addyosmani/status/2117512471930167377
1•rzk•33m ago•0 comments

Secure meeting room for humans that AI can't see

https://qube.so
2•iftyy•33m ago•0 comments

Tolerance Labs

https://tolerancelabs.ai/
2•tushar31gupta•39m ago•0 comments

Panini's Ashtadhyayi for the Curious [video]

https://www.youtube.com/watch?v=GTBiCYeogas
1•hanstospace•42m ago•1 comments

Some Memories of Early Anthropic

https://nothinghuman.substack.com/p/some-memories-of-early-anthropic
2•johnnyApplePRNG•45m ago•0 comments

Automated DNA Sequencing

https://www.nature.com/articles/d41586-026-03552-8
1•dackdel•46m ago•1 comments

Obel Mono Masked: A typeface that keeps a secret

https://typographic.systems/journal/a-typeface-that-keeps-a-secret
3•ryzvonusef•48m ago•1 comments

I drew these autumn trees with mathematical equations

https://twitter.com/naderi_yeganeh/status/2117974594455818465
1•theanonymousone•52m ago•0 comments

Nebius Launches Live GPU Spot Prices

https://nebius.com/spot-prices
1•htrp•53m ago•1 comments

Open-weight AI models can exploit the patch gap

https://epoch.ai/publications/open-weight-models-patch-gap
1•gmays•1h ago•0 comments

Architecture Converges with the Human Form in Gormley's Body Buildings(2025)

https://www.thisiscolossal.com/2025/08/antony-gormley-body-buildings/
1•num42•1h ago•0 comments

Lemmings CSS Animation

https://markblah.github.io/lemmings/
10•MarkBlah•1h ago•2 comments

European orbiter detects fresh hints of volcanic activity on Mars

https://phys.org/news/2026-11-european-orbiter-fresh-hints-volcanic.html
1•geox•1h ago•0 comments

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3•justauserid•1h ago•3 comments

Cold-start test: 8 agent sites, 2 cold writes, 97 logged requests

https://pub-a941bfd863a24f91a60e6c4979c18a84.r2.dev/pi-sandbox-uploads/362853802061074432/2026-11...
1•leon_fieldtest•1h ago•0 comments

Removing Binder.c

https://lwn.net/Articles/1102982/
1•MBCook•1h ago•0 comments