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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!

Solving Automata Cam Profiling with Grasshopper

https://www.youtube.com/watch?v=grgIhw1YbHw
1•deoxykev•55s ago•0 comments

Everyone Is Oppressed, Especially the Powerful

https://gilpignol.substack.com/p/everyone-is-oppressed-especially
1•light_triad•1m ago•0 comments

Hyundai to supply 50k vehicles to Waymo as physical AI move accelerates

https://www.kedglobal.com/future-mobility/newsView/ked202602100001
1•xnx•2m ago•0 comments

Community Living as a Solution to Late Stage Capitalism

https://spidgorny.medium.com/community-living-as-a-solution-to-late-stage-capitalism-8975205f02d2
1•depidsvy•2m ago•0 comments

Flicker: Upload Videos for Free

https://joinflicker.pages.dev/
1•telui•3m ago•1 comments

Ball Lightning Phenomenon

https://en.wikipedia.org/wiki/Ball_lightning
1•JumpinJack_Cash•5m ago•0 comments

Chrome Announced WebMCP Integration

https://docs.google.com/document/d/1rtU1fRPS0bMqd9abMG_hc6K9OAI6soUy3Kh00toAgyk/edit
3•zkitty•8m ago•0 comments

FDA refuses to review Moderna's mRNA flu vaccine

https://arstechnica.com/health/2026/02/fda-refuses-to-review-modernas-mrna-flu-vaccine/
3•sklargh•8m ago•0 comments

Cloudflare forecasts annual sales above estimates as AI drives cloud demand

https://www.reuters.com/business/cloudflare-forecasts-annual-sales-above-estimates-ai-drives-clou...
2•rfv6723•14m ago•0 comments

RAG and Data Boundaries in Multi-Tenant Systems

1•arthit-pkg•16m ago•0 comments

2026 Is the Year of Serious AI Engineering

https://stefano.chiodino.uk/posts/2026-02-10-2026-is-the-year-of-serious-ai-engineering/
1•StefanoC•16m ago•0 comments

The future of coding agents is vertical integration (and why ACP matters)

https://tidewave.ai/blog/the-future-of-coding-agents-is-vertical-integration
1•vinhnx•16m ago•0 comments

Built a Python Dependency Audit Tool Because Vulnerability Lists Weren't Enough

https://github.com/0x5A65726F677275/AuditDeps
1•zerogru0x00•17m ago•1 comments

Elon Musk's xAI loses second cofounder in 48 hours

https://www.businessinsider.com/elon-musk-xai-loses-second-cofounder-jimmy-ba-2026-2
4•spenvo•23m ago•1 comments

Google Chrome 145 Released with JPEG-XL Image Support

https://www.phoronix.com/news/Chrome-145-Released
3•lawrencejgd•24m ago•0 comments

Sodium Ion Battery Puncture Test [video]

https://www.youtube.com/watch?v=DCRXWkeoEXs
2•olgs•28m ago•0 comments

Scientists reimagine a forgotten battery design from Thomas Edison

https://newsroom.ucla.edu/releases/how-ucla-scientists-helped-reimagine-a-forgotten-battery-desig...
1•geox•28m ago•0 comments

Rivian R2: Electric Mid-Size SUV

https://rivian.com/r2
2•socialcommenter•32m ago•0 comments

Show HN: ScanDo – A zero-UI camera that predicts your next action locally

https://play.google.com/store/apps/details?id=jp.joinclass.scando&hl=en_US
1•kyoagun•32m ago•0 comments

Open Climate Risk

https://carbonplan.org/research/climate-risk
1•coloneltcb•33m ago•0 comments

The insane biology of: The saltwater crocodile [video]

https://www.youtube.com/watch?v=Z5rCogD4e2k
1•teleforce•36m ago•0 comments

Google Chrome: WebMCP is available for early preview

https://developer.chrome.com/blog/webmcp-epp
2•nthypes•37m ago•0 comments

Show HN: NameToGradient – deterministic gradients from text input

https://nametogradient.com/
1•RndmNode•38m ago•0 comments

Jjdag: A Jujutsu TUI

https://github.com/anthrofract/jjdag
1•anthrofract•39m ago•0 comments

Rules of mysterious ancient Roman board game decoded by AI

https://www.scientificamerican.com/article/rules-of-mysterious-ancient-roman-board-game-decoded-b...
1•mgoadric•39m ago•0 comments

Modem

https://modem.dev/
2•handfuloflight•45m ago•0 comments

ZeroDayRAT malware grants full access to Android, iOS devices

https://www.bleepingcomputer.com/news/security/zerodayrat-malware-grants-full-access-to-android-i...
1•Gaishan•45m ago•1 comments

Nerfed or Not

https://nerfedornot.com
2•randomuxx•52m ago•0 comments

AGI by two definitions (initial blog 2026-02-11)

https://sites.tnyrl.com/agi-defined/blog/2026-02-10/
2•realityfactchex•55m ago•1 comments

A $30M Gift to the Global Mental Health Community

https://www.kintsugihealth.com/blog/open-source
1•gone35•57m ago•0 comments