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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!

Tesla's Cybertruck heads for an exit after years of hype and division

https://apnews.com/article/cybertruck-cybercab-discontinued-musk-sales-6938a145d365f8e31b26bb9c45...
1•jamesgill•3m ago•0 comments

Combining freelancing, social networking, and AI

https://freelancer.svoxx.com/int/en
1•svoxx•5m ago•0 comments

Developers say they didn't know gov't was buying user data

https://404privacy.com/blog/app-developers-say-they-didnt-know-user-data-went-to-the-government/
1•un-nf•6m ago•1 comments

QueCarrera – Pick a university degree in Madrid, with cut-off grades

https://quecarrera.vercel.app
1•gustavogb•7m ago•0 comments

Anthrax outbreak in Africa's oldest national park kills hippos

https://abcnews.com/International/anthrax-outbreak-virunga-national-park-kills-dozens-hippos/stor...
1•gmays•8m ago•0 comments

A Man Who Conned the World

https://foreignpolicy.com/2023/12/03/con-artist-global-scam-ghana-anansis-gold/
1•prmph•12m ago•0 comments

1994 After Dark Files Rat Race, Ported to the Browser

https://rat-race.heyitsjam.es/
1•shijie•13m ago•0 comments

Elon Musk is about to learn how much America hates him

https://www.independent.co.uk/voices/elon-musk-donald-trump-midterms-republican-starlink-b3079726...
4•Zigurd•18m ago•0 comments

What Is Pico Ballooning?

https://traquito.github.io/pico-balloons/
1•gregsadetsky•18m ago•0 comments

US warns China it must 'immediately' meet terms of Busan trade deal

https://www.ft.com/content/391bb785-0247-4c39-b53b-35007187d603
2•madihaa•18m ago•0 comments

Mineral-forming method removes over 99% of radioactive technetium from waste

https://phys.org/news/2026-11-mineral-method-radioactive-technetium-liquid.html
2•titusblair•19m ago•0 comments

Ask HN: Are AI-written reviews a safety risk? Evidence from ICLR2027 scores

1•fsabau•20m ago•0 comments

Show HN: We built an async interview engine to get published on HackerNoon

https://journalistic.tech/
1•smooke•20m ago•0 comments

Show HN: Realtime sync engine without any new infra

https://github.com/tanishqkancharla/tandem
1•tanishqkanc•22m ago•0 comments

New Research Tests Whether AI Models Know Their Own Thoughts

https://www.quantamagazine.org/new-research-tests-whether-ai-models-know-their-own-thoughts-20261...
1•dogscatstrees•22m ago•0 comments

How I Learned to Stop Worrying and Love AI

https://koenvangilst.nl/lab/how-i-stopped-worrying-and-learned-to-love-ai
3•vnglst•24m ago•0 comments

FMF Jailbreak Rating Framework for Frontier Cyber Threats

https://www.frontiermodelforum.org/updates/introducing-the-fmf-jailbreak-rating-framework-for-fro...
1•pretext•24m ago•0 comments

Anthropic to press ahead with November IPO targeting $1.5T valuation

https://www.ft.com/content/314e17df-e7af-4814-b208-70a0557cb452
3•mfiguiere•24m ago•0 comments

Ballast – cold email infrastructure with AI and MCP

https://ballast.to
1•yetanotherdevz•24m ago•1 comments

Teaching AI to build scientific models

https://www.anthropic.com/research/teaching-ai-to-build-scientific-models
2•pretext•25m ago•0 comments

End of the Internet

https://stratechery.com/2026/the-end-of-the-internet/
3•Karrot_Kream•26m ago•0 comments

I watched a humanoid robot clean my apartment. Like a taste of the future

https://www.technologyreview.com/2026/11/06/1148090/i-watched-a-humanoid-robot-clean-my-apartment...
3•gnabgib•28m ago•0 comments

Hacking the meta ray-ban smartglasses

https://p0pcycle.com/2026/11/06/hacking-the-meta-ray-ban-smartglasses/
1•sshah03•29m ago•0 comments

The Components of Agent Memory

https://www.anthropic.com/research/components-of-agent-memory
3•mfiguiere•30m ago•0 comments

The Yak Is Shaved

https://oddbits.ai/blog/the-yak-is-shaved/
1•wfalcon•30m ago•1 comments

Implant 0.4.0 Is Out

https://marketplace.visualstudio.com/items?itemName=strangepleasures.implant
1•strangepleasure•30m ago•1 comments

Tell HN: Be Careful with Stripe Connect

6•breue•33m ago•0 comments

LZ4 1.11 Introduces Multi-Threaded Compression for Liblz4, Other Gains

https://www.phoronix.com/news/LZ4-1.11-Released
3•Bender•35m ago•0 comments

The Web Is More Than Enough

https://ftrain.com/aboard-the-web-is-more-than-enough
2•bookofjoe•35m ago•0 comments

88x31 GIF Stickers for 2026

https://a90.com/experiments/88x31/
3•saint11•36m ago•0 comments