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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•6mo 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!

Satellite swarms set to photobomb more than 95% of some telescopes' images

https://www.nature.com/articles/d41586-025-03953-1
1•croes•1m ago•0 comments

How I Learned to Stop Worrying and Love Spatial and Agentic (>AGI)

https://lasi.uno/
1•maieuticagent•2m ago•0 comments

Claude Code Plugin Marketplaces

https://code.claude.com/docs/en/plugin-marketplaces
1•franze•3m ago•1 comments

Show HN: Tracksy – a minimalist time-tracking tool I built for my freelance work

https://www.tracksy.me/
1•miguelboka•4m ago•0 comments

Ask HN: Are LLMs just expensive search and scripting tools? Is it that simple?

2•edwin2•4m ago•0 comments

The Connection Machine (1985) [pdf]

https://dspace.mit.edu/bitstream/handle/1721.1/14719/18524280-MIT.pdf
2•internetter•4m ago•1 comments

Zimbabwe's forest and energy projects reveal the downside of carbon credits

https://theconversation.com/zimbabwes-forest-and-energy-projects-reveal-the-downside-of-carbon-cr...
1•PaulHoule•7m ago•0 comments

The Sights and Sounds of Bhutan

https://waitbutwhy.com/2025/11/bhutan.html
1•gmays•8m ago•0 comments

The Constraints That Create Autonomy

https://www.davidpoll.com/2025/12/constraints-create-autonomy/
1•depoll•9m ago•0 comments

Show HN: Sigma Runtime ERI (v0.1) – Open benchmark for attractor-based LLMs

https://github.com/sigmastratum/documentation/blob/main/runtime/benchmarks/README.md
1•teugent•10m ago•0 comments

Ehtml

https://e-html.org/
1•edtech_dev•12m ago•0 comments

Feeling Old: 44 Is the First Big Aging Cliff for Millennials

https://www.thecut.com/article/middle-aged-millennials-feeling-old-44-aging-cliff.html
2•ryan_j_naughton•15m ago•1 comments

Linguistic Sightseeing: The Germanic Languages, Part I

https://collisteru.substack.com/p/linguistic-sightseeing-the-germanic
1•surprisetalk•15m ago•0 comments

Workplace hierarchies are gravity wells

https://notleo.com/workplace-hierarchies-are-gravity-wells/
1•ja2•15m ago•0 comments

One-Third of US Families Earn over $150k

https://marginalrevolution.com/marginalrevolution/2025/11/one-third-of-us-families-earn-over-1500...
3•surprisetalk•15m ago•0 comments

Talent sorting in Germany is flawed

https://simongrimm.substack.com/p/medical-school-is-a-bad-choice-for
1•surprisetalk•16m ago•1 comments

TrueMeter: AI Energy Agent That Optimizes Utility Bills

https://truemeter.com/blog/truemeter-ai-energy-agent-that-optimizes-utility-bills
9•oateco•16m ago•0 comments

Creating AI Ready Data

https://sdcstudio.axius-sdc.com/
1•twcook•16m ago•0 comments

Multivox: Volumetric Display

https://github.com/AncientJames/multivox
2•jk_tech•17m ago•0 comments

Corn's clean-energy promise is clashing with its climate footprint

https://floodlightnews.org/corn-ethanol-clean-energy-vs-climate-costs/
2•coloneltcb•17m ago•0 comments

47 Days to Demo. 47 GameDev Lessons Learned

https://themakerway.com/devblog/2025/12/03/47-lessons-learned.html
1•uzish•18m ago•0 comments

Fog of War

https://en.wikipedia.org/wiki/Fog_of_war
1•rolph•18m ago•0 comments

Anthropic Interviewer: What 1,250 professionals told us about working with AI

https://www.anthropic.com/research/anthropic-interviewer
1•meetpateltech•18m ago•0 comments

Ask HN: Anyone here self-hosting databases and needing advanced features?

1•SirusCodes•19m ago•0 comments

Show HN: Giftl – A simple, free gift registry

https://www.gif.tl/
1•frustracean•21m ago•0 comments

Beyond the dollar: Helping newsrooms reach sustainability

https://www.pressforward.news/beyond-the-dollar-helping-newsrooms-reach-sustainability/
1•mooreds•21m ago•0 comments

The End of the Train-Test Split

https://folio.benguzovsky.com/train-test
2•gmays•21m ago•0 comments

Launch HN: Browser Buddy (YC W24) – A recommendation system for Internet writing

https://www.browserbuddy.com/
4•alien0006•22m ago•0 comments

Firecrawl getting blocked due to headlesness

1•maclarens•23m ago•0 comments

Managing a Windfall

https://www.bogleheads.org/wiki/Managing_a_windfall
1•mooreds•24m ago•0 comments