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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!

Meteorologist warns federal cuts are undermining weather forecasts nationwide

https://www.lehighvalleynews.com/environment-science/local-meteorologist-warns-federal-cuts-are-u...
1•mkmk•1m ago•0 comments

Decimal Time (French Republican Clock)

https://en.wikipedia.org/wiki/Decimal_time
1•rawgabbit•4m ago•0 comments

Made a register-based bytecode VM in C, heres how the handler table works

https://github.com/goofgef/ZagMate
1•goofgef•11m ago•1 comments

The exploitation paradox in open source

https://lwn.net/SubscriberLink/1058031/a1b77f8039faed6c/
1•pabs3•14m ago•0 comments

Coasty automates anything – this post was written by the CUA itself

1•PrateekJ17•15m ago•1 comments

"Here is a re-post of an internal note"

https://twitter.com/sama/status/2028640354912923739
1•davidbarker•16m ago•1 comments

PHP 8 disable_functions bypass PoC

https://github.com/m0x41nos/TimeAfterFree
2•m0x41nos•19m ago•0 comments

Anthropic Adds Free Memory Feature and Import Tool to Lure ChatGPT Users

https://www.macrumors.com/2026/03/02/anthropic-memory-import-tool/
1•mgh2•20m ago•0 comments

LibreOffice hits back at critics, says its UI is better than Microsoft Office's

https://www.neowin.net/news/libreoffice-hits-back-at-its-critics-says-its-ui-is-better-than-micro...
4•bundie•25m ago•1 comments

Dyndispatch – Dynamic Dispatch for Python

https://git.sr.ht/~shakna/dyndispatch
2•shakna•25m ago•0 comments

China-based assets being removed from the Asset Store on March 31st

https://discussions.unity.com/t/a-notice-for-asset-store-assets-from-publishers-in-greater-china/...
3•linolevan•26m ago•1 comments

Odido Security Breach – 6M Customers (Full Timeline and Analysis)

https://danicfilip.com/blog/odido-hack-2026-full-timeline-and-analysis/
1•softwarelounge•27m ago•0 comments

Show HN: VCBacked – Find venture funded startups for your business, fund, agency

https://www.vcbacked.co
1•veritas9•28m ago•0 comments

Show HN: Evan-proxy, better teenager phone management

https://github.com/chrissnell/evan-proxy
1•chrissnell•30m ago•0 comments

Revealed Preferences

https://writing.nikunjk.com/p/revealed-preferences
1•sshh12•32m ago•0 comments

Kalshi: Prediction Markets Need 'Moral Side' After Halting Khamenei Trades

https://www.barrons.com/articles/kalshi-prediction-market-iran-ayatollah-khamenei-fced1463
3•petethomas•37m ago•0 comments

Show HN: ApplyPilot – AI Agent that applies to jobs for you

https://github.com/Pickle-Pixel/ApplyPilot
1•pickle-pixel•38m ago•0 comments

Working with the Kernel Development Community

https://kernel.org/doc/html/latest/process/index.html
2•themaxdavitt•39m ago•0 comments

Offline 23 Hours a Day

https://sive.rs/off23
6•tinkelenberg•48m ago•0 comments

Google just killed my project

5•othmanosx•50m ago•2 comments

AI Web Search and Scraping

https://github.com/larryste1/web-search-tool
1•larryste•53m ago•1 comments

Geo-Strategy #8: The Iran Trap

https://www.youtube.com/watch?v=7y_hbz6loEo
5•bentcorner•54m ago•1 comments

Zed: We Overhauled Our Terms of Service and Privacy Policy

https://zed.dev/blog/terms-update
7•scblzn•55m ago•5 comments

Unity Asset Store de-listing assets originating from China

https://cdn.mc-weblink.sg-mktg.com/weblink/MTc3MjQ5NzU4M3xLd24xRXlUcGRaR3BrbjNGSjYwRlFSZDViaWJwX2...
5•starkparker•56m ago•0 comments

Show HN: ThinqWith – generate one-click AI prompts for your readers

https://thinqwith.me
1•nirajswami•56m ago•0 comments

Claude Code 3 layer config

https://doneyli.substack.com/p/the-3-layer-claude-code-configuration
2•hn247dj•57m ago•0 comments

Show HN: DevReel – A virtual gym for practical software engineering challenges

https://www.devreel.tech/
1•giota_dev•58m ago•0 comments

Agentic SDLC, my approach to high-quality agentic development

https://github.com/rmzi/portable-dev-system
1•rmzi-a•59m ago•1 comments

Call a Human MCP

https://github.com/nishantmodak/call-a-human-mcp
2•nishantmodak•1h ago•1 comments

Show HN: Grantex–Open authorization protocol for AI agents(IETF draft submitted)

1•mishrasanjeev•1h ago•0 comments