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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!

Ransomware groups switch to stealthy attacks and long-term access

https://www.csoonline.com/article/4137010/ransomware-groups-switch-to-stealthy-attacks-and-long-t...
1•kseniamorph•32s ago•0 comments

Offlining a Live Game with .NET Native AOT

https://sephnewman.substack.com/p/offlining-a-live-game-with-net-native
1•kg•2m ago•0 comments

Communication Files: Interprocess IO before Pipes (2017) [pdf]

https://www.cs.dartmouth.edu/~doug/DTSS/commfiles.pdf
1•mpweiher•2m ago•0 comments

US Customs destroys rare floppy disk

https://twitter.com/TehKeripo/status/2027171532825571678
1•Shank•3m ago•0 comments

Chinese car crashes after voice command kills headlights

https://carnewschina.com/2026/02/27/car-crashes-after-voice-command-kills-headlights-lynk-co-z20-...
2•giuliomagnifico•3m ago•0 comments

PostmarketOS in 2026-02: generic kernels, bans use of generative AI

https://postmarketos.org/blog/2026/02/26/pmOS-update-2026-02/
2•pantalaimon•4m ago•0 comments

Perplexity Computer Review – $100 lost in an hour

https://old.reddit.com/r/perplexity_ai/comments/1rfver4/perplexity_computer_review_100_lost_in_an...
1•daniel_iversen•4m ago•0 comments

Pentagon Fires Another Laser at Drone, Prompting New Air Closure

https://www.nytimes.com/2026/02/26/us/drone-faa-dhs-el-paso-airspace.html
1•reaperducer•4m ago•0 comments

A benchmark of expert-level academic questions to assess AI capabilities – HLE

https://www.nature.com/articles/s41586-025-09962-4
1•tufo•4m ago•0 comments

Blame RMS for AI Coding

https://bit1993.bearblog.dev/blame-rms-for-ai-coding/
3•bit1993•6m ago•0 comments

The war against PDFs is heating up

https://www.economist.com/business/2026/02/24/the-war-against-pdfs-is-heating-up
3•jcartw•7m ago•1 comments

The Insane Stupidity of UBI

https://geohot.github.io//blog/jekyll/update/2026/02/27/the-insane-stupidity-of-ubi.html
1•swah•8m ago•0 comments

Why your AI agents have goldfish syndrome

https://substack.com/home/post/p-189327282
1•vektormemory•11m ago•0 comments

Global Intelligence Crisis

https://www.citadelsecurities.com/news-and-insights/2026-global-intelligence-crisis/
1•jbredeche•11m ago•0 comments

Osmix

https://medium.com/conveyal-blog/introducing-osmix-365c4b4332ef
1•maxerickson•14m ago•0 comments

Which piece of speculative fiction had the greatest one-day stock market impact?

https://www.ft.com/content/f12398a8-ef57-412f-ae40-67ef9b421bed
2•cainxinth•17m ago•1 comments

AI Isn't the Excuse. It's the Enabler

https://devrimvardar.com/topic/ai-enabler-layoffs
1•devrimco•18m ago•1 comments

Show HN: Caddy plugin that charges AI crawlers real USDC to access your site

https://github.com/paolobietolini/caddy-x402
1•paolobietolini•19m ago•2 comments

STRinGS: Selective Text Refinement in Gaussian Splatting

https://strings-official.github.io
2•Claudiusseibt•21m ago•0 comments

Show HN: Kaomojiya – Browse and copy kaomoji (Japanese text emoticons) instantly

https://www.kaomojiya.org
1•chrisweiindie•21m ago•0 comments

Show HN: AI sandbox that runs on your homelab

https://github.com/deevus/pixels
1•deevus•22m ago•0 comments

"Our programs are fun to use."

https://unsung.aresluna.org/our-programs-are-fun-to-use/
2•todsacerdoti•23m ago•0 comments

Perplexity Computer – The Age of AI Agents Is Here

https://medium.com/seeds-for-the-future/perplexity-computer-the-age-of-ai-agents-is-here-958b3388...
1•hungryminded•24m ago•1 comments

Architectural Decisions That Will Make or Break Your AI Product

https://kb-it.net/5-architectural-decisions-that-will-make-or-break-your-ai-product/
1•better-it•25m ago•0 comments

Show HN: Httap – intercept and inspect HTTP traffic from your shell or agent

https://github.com/mtford90/httap
1•mtford•28m ago•0 comments

Best books/guides to learn about Stable coins in 2026

1•karti03•28m ago•0 comments

Lawmakers say US Military used laser to take down Border Protection drone in TX

https://apnews.com/article/military-laser-border-drone-texas-airport-55aaab7093f7d6dd174f909f3875...
5•thinkcontext•28m ago•1 comments

How Neoliberalism Broke Britain (2023)

https://tribunemag.co.uk/2023/10/breaking-britain-neoliberalism
1•robtherobber•28m ago•0 comments

Show HN: Shannon – Local desktop app to orchestrate Claude Code agent teams

1•lydionfinance•28m ago•0 comments

ChatGPT Advanced Data Analysis vs. Local Alternatives: A Privacy Comparison

https://www.queryveil.com/blog/chatgpt-data-analysis-privacy-comparison
1•david-rodriguez•30m ago•1 comments