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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•9mo 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!

'Really Simple Licensing' (RSL) – Open Licensing Standard for AI Crawlers

https://en.wikipedia.org/wiki/Really_Simple_Licensing
1•evolve2k•16m ago•0 comments

The AI Transformation Framework

https://zapier.com/playbooks/ai-transformation-framework
1•swolpers•18m ago•0 comments

Shifting Security Left for AI Agents with GitGuardian MCP

https://blog.gitguardian.com/shifting-security-left-for-ai-agents-enforcing-ai-generated-code-sec...
1•umairnadeem123•18m ago•0 comments

Feature-Sliced Design

https://feature-sliced.design/
1•saikatsg•18m ago•0 comments

High Speed Rail by Country 2026

https://worldpopulationreview.com/country-rankings/high-speed-rail-by-country
1•thunderbong•20m ago•0 comments

Trend Is Concerning

https://techcrunch.com/2026/02/26/jack-dorsey-block-layoffs-4000-halved-employees-your-company-is...
1•melvinodsa•22m ago•0 comments

Show HN: I built a Chrome extension to record demo videos without editing

https://zoomflow.rovelin.com/
1•hritik7742•27m ago•0 comments

Judge says he will order Greenpeace to pay $345M in oil pipeline case

https://apnews.com/article/greenpeace-energy-transfer-dakota-access-pipeline-30bfb9939dea06f1e976...
1•e2e4•34m ago•0 comments

Model Collapse Ends AI Hype

https://www.youtube.com/watch?v=ShusuVq32hc
3•signa11•36m ago•0 comments

Research suggests mating direction bias between Neanderthals and humans

https://www.theguardian.com/science/2026/feb/26/male-neanderthals-human-females-mating-research-d...
2•uxhacker•37m ago•1 comments

Seeing Is Not Believing: Benchmarking AI Image Detectors

https://blog.succinct.xyz/ai-image-detection-benchmark/
1•ncb9094•37m ago•0 comments

Pakistan bombs targets in Afghan cities, minister calls it 'open war'

https://www.reuters.com/world/asia-pacific/pakistan-strikes-afghanistan-targets-clashes-intensify...
1•petethomas•38m ago•0 comments

How Stupid Would It Be to Put Data Centers in Space?

https://spectrum.ieee.org/orbital-data-centers
1•amaks•41m ago•1 comments

Upload 23andMe,myHeritage, Myancestry, get 1,200 GRS score and a longevity prot

1•HelixSequencing•42m ago•0 comments

Dear Time Lords: Freeze Computers in 1993

https://graydon2.dreamwidth.org/322461.html
5•zdw•50m ago•0 comments

Reduce Claude Token Usage by 50%

https://ham-pro.vercel.app/
2•Luseniik•50m ago•1 comments

Making Video Games in 2025 (without an engine)

https://www.noelberry.ca/posts/making_games_in_2025/
2•alvivar•50m ago•0 comments

How do you evaluate a person's ability to use AI?

3•imwoody•53m ago•1 comments

Secure-Massively-Multiplayer-Snake

https://eieio.games/blog/secure-massively-multiplayer-snake/
2•colinprince•53m ago•0 comments

Claude-search – grep, resume your Claude Code session history from the CLI

https://github.com/pi-netizen/claude-search
2•pi-netizen•54m ago•1 comments

Under Secretary of Defense Emil Michael Response to Dario Amodei

https://xcancel.com/uswremichael/status/2027211708201058578?s=12
4•grej•56m ago•2 comments

Green Eggs and HAM (Hierarchical Agent Memory)

https://github.com/kromahlusenii-ops/ham
3•Luseniik•57m ago•1 comments

Energym: Move the World

https://www.aicandy.be/giorgio-1
2•zdw•59m ago•0 comments

Tonka beans are illegal in the US

https://www.bbc.com/future/article/20170620-the-delicious-flavour-with-a-toxic-secret
5•valzevul•1h ago•0 comments

OpenClaw Hype: Analysis of Chatter from the Dark Web (BleepingComputer)

https://www.bleepingcomputer.com/news/security/the-openclaw-hype-analysis-of-chatter-from-open-so...
2•ildar•1h ago•0 comments

Any Website Can Take Full Control of Your OpenClaw Agent (Oasis)

https://www.oasis.security/blog/openclaw-vulnerability
1•ildar•1h ago•0 comments

Show HN: Cecil – open-source memory and identity protocol for AI

https://github.com/johnkf5-ops/cecil-protocol
1•JohnKnopf•1h ago•1 comments

New AirSnitch attack breaks Wi-Fi encryption in homes, offices, and enterprises

https://arstechnica.com/security/2026/02/new-airsnitch-attack-breaks-wi-fi-encryption-in-homes-of...
1•brie22•1h ago•1 comments

Show HN: HeadshotAI – Professional AI headshots in 30 seconds for £4.99

https://headshotai-mvp-jb.netlify.app
1•jackbventures•1h ago•3 comments

China piles pressure on Japan after Takaichi Sanae's triumph

https://www.economist.com/asia/2026/02/26/china-piles-pressure-on-japan-after-takaichi-sanaes-tri...
3•petethomas•1h ago•0 comments