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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•2mo 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!

Ask HN: What is a physiically disabled person to do in this job market?

1•amathew•1m ago•0 comments

Open-source project for Motorola device bootloader unlocking

https://www.fuckyoumoto.xyz/
1•1970-01-01•4m ago•0 comments

Meta to invest hundreds of billions of dollars into several multi-GW datacenters

https://www.datacenterdynamics.com/en/news/meta-to-invest-hundreds-of-billions-of-dollars-into-compute-to-build-superintelligence-with-several-multi-gw-data-center-clusters/
1•reasonableklout•4m ago•0 comments

British Perl guru Matt Trout dead at 42

https://www.theregister.com/2025/07/11/matt_trout_dies_at_42/
1•ohjeez•4m ago•0 comments

Why South Korean young men and women are more politically divided

https://www.latimes.com/world-nation/story/2025-07-03/why-south-korean-young-men-and-women-are-more-politically-divided-than-ever
1•PaulHoule•6m ago•0 comments

Show HN: Self-hosted task management with 24-languages support

https://tududi.com
1•cvicpp123•6m ago•0 comments

Source code analysis of Amazon Kiro

https://ghuntley.com/amazon-kiro-source-code/
1•ghuntley•7m ago•0 comments

We're Seemingly Still in the "Throw Money at It" AI Era

https://spyglass.org/clash-of-the-ai-datacenter-titans/
1•bentocorp•7m ago•0 comments

The Windsurf Acquisition Challenge

https://squingo.com/rooms/windsurf-fight
1•RaulOnRails•9m ago•1 comments

Claude Code Is All You Need

https://twitter.com/trq212/status/1944877527044120655
3•zora_goron•14m ago•0 comments

Show HN: BookList – an app to track books and share reviews

https://booklist-app.neocities.org/
1•perottisam•16m ago•1 comments

Show HN: Generate any workflow with natural language

https://www.osly.ai/
1•hez2000•17m ago•0 comments

Show HN: ZeroFS: The S3FS that does not suck

https://github.com/Barre/zerofs
4•riccomini•18m ago•0 comments

AskIt MCP – Apache 2.0

https://github.com/johnrobinsn/askit
1•johnrobinsn•23m ago•1 comments

Show HN: A simple iOS-native map measurement app

https://apps.apple.com/ch/app/geometer-map/id6748311921
2•nidegen•23m ago•0 comments

Tresorit – secure file exchange and collaboration made easy

https://tresorit.com/
1•janandonly•23m ago•0 comments

DEWLine Museum – The Distant Early Warning Radar Line

https://dewlinemuseum.com/
4•reaperducer•23m ago•0 comments

Launchk: Rust/Cursive TUI for looking at macOS launchd agents and daemons

https://github.com/mach-kernel/launchk
1•sea-gold•23m ago•0 comments

Ask HN: Have you noticed AI critic content being disparaged on HN?

1•ciwolex•25m ago•1 comments

Researchers Develop New Tool to Measure Biological Age

https://www.seattletimes.com/life/researchers-develop-new-tool-to-measure-biological-age/
1•m463•25m ago•0 comments

Show HN: Clarifytube –Turn any YouTube video into a full article

https://clarifytube.com/article/this-might-be-bigger-than-deepseek?id=xLFkqYOUN24&l=en
1•lfgtavora•26m ago•1 comments

1.1.1.1 Is Down

https://one.one.one.one/#a
5•kdrag0n•27m ago•1 comments

Scientists detect light passing through human head for brain imaging

https://spie.org/news/scientists-detect-light-passing-through-entire-human-head-opening-new-doors-for-brain-imaging
1•Gaishan•29m ago•0 comments

Code highlighting with Cursor AI for $500k

https://securelist.com/open-source-package-for-cursor-ai-turned-into-a-crypto-heist/116908/
3•ivanjermakov•29m ago•0 comments

Microsoft Surface parody (2007) [video]

https://www.youtube.com/watch?v=CZrr7AZ9nCY
2•cjcenizal•30m ago•0 comments

Texas AG requests Robert Roberson be executed Oct. 16

https://www.texastribune.org/2025/06/17/texas-robert-roberson-execution-date-ken-paxton/
1•rossant•32m ago•0 comments

DHH: Future of Programming, AI, Ruby on Rails, Productivity and Parenting

https://lexfridman.com/dhh-david-heinemeier-hansson-transcript/
2•nstj•32m ago•0 comments

Journalist says 4k fake AI news websites created to game Google algorithms

https://pressgazette.co.uk/news/french-journalist-who-uncovered-4000-fake-ai-news-websites-warns-uk-could-be-next/
1•giuliomagnifico•34m ago•0 comments

Cloudflare DNS Is Down

https://news.ycombinator.com/submit
7•jpillora•34m ago•0 comments

1.1.1.1 Is Down

https://www.cloudflarestatus.com/incidents/28r0vbbxsh8f
16•outworlder•35m ago•0 comments