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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•1y 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!

Nvidia accused of trying to cut a deal with Anna's Archive

https://www.tomshardware.com/tech-industry/artificial-intelligence/nvidia-accused-of-trying-to-cu...
1•amai•1m ago•0 comments

"Today we're laying off a large part of the Airtable team "

https://twitter.com/fedesimio/status/2109713695165329511
1•tortilla•2m ago•0 comments

The Canary Resuscitator (2018)

https://blog.scienceandindustrymuseum.org.uk/canary-resuscitator/
1•EndXA•2m ago•0 comments

TikTok gave children placebo safety controls in undisclosed experiments

https://www.biometricupdate.com/202610/tiktok-gave-children-placebo-safety-controls-in-undisclose...
1•paimapi•3m ago•0 comments

BCHS is an open source software stack for web apps. BSD, C, httpd, SQLite

https://learnbchs.org/
2•Bluestein•5m ago•1 comments

To Classify, Try a Trie Tree

https://fsdatalab.github.io/blog/ai-classification/
1•shreya_shankar•6m ago•0 comments

Martin Odersky – Keynote: The End of Programming? [video]

https://www.youtube.com/watch?v=jlJyuJhDnlc
1•fabianhjr•6m ago•0 comments

Should a software factory be lights-off?

https://arxiv.org/abs/2610.13668
1•azhenley•7m ago•0 comments

Cerebras hits a new low days before insiders can sell

https://theinference.org/article/altman-s-17-words-lifted-cerebras-9-the-lockup-calendar-set-the-...
2•richardttang•8m ago•0 comments

NocoDB: Free and Self-Hostable Airtable Alternative

https://github.com/nocodb/nocodb
1•saikatsg•9m ago•0 comments

Who Taught the Machines Mathematics?

https://nisheethvishnoi.com/2026/10/09/who-taught-the-machines-mathematics/
1•speckx•9m ago•0 comments

Bad "AI Consciousness Takes" Bingo

https://www.polytropolis.com/p/bad-ai-consciousness-takes-bingo
1•spiffytech•11m ago•0 comments

Ubuntu's speech-to-text is now available as a technology preview

https://ubuntu.com/blog/myna-speech-to-text-technology-preview-available
1•Vinnl•12m ago•0 comments

HN Feature Request: Option to hide repetitive AI complaints

1•fhub•13m ago•0 comments

1k-mile-long cloud that forms and vanishes on Mars every day

https://www.livescience.com/space/mars/1-000-mile-long-cloud-that-forms-and-vanishes-on-mars-ever...
1•mmh0000•14m ago•0 comments

ConfigLens: Figure out why your AI tool is ignore your settings

https://github.com/ob4cl/configlens
1•ob4cl•15m ago•0 comments

Observation-Preserving Runtime Gates and Semantics for Adaptive Learning

https://higher-categorical-semantics.pages.dev/research/observation-preserving-runtime-gates-and-...
1•measurablefunc•16m ago•0 comments

15% lower bitrate at the same video quality with WHIP

https://pion.ly/blog/whip-more-quality-less-bitrate/
1•Sean-Der•17m ago•0 comments

R² Index: Global leaderboard of top 800k "de-slopped" AI researchers.

https://r2index.fyi
2•HenryNdubuaku•18m ago•0 comments

Writing a Demoscene Intro for the ZX Spectrum

https://www.markround.com/blog/2026/zx-spectrum-intro
2•zdw•18m ago•0 comments

Coinbase Built, Evaluated, and Post-Trained a Fraud Agent

https://www.coinbase.com/en-gb/blog/part-one-how-coinbase-built-evaluated-and-post-trained-a-frau...
1•maayank•18m ago•0 comments

What You Earn per Hour

https://calculators.page/blog/what-you-actually-earn-per-hour
1•yashness•19m ago•0 comments

Tim Sweeneys says AI is enabling a big pivot at Epic Games

https://twitter.com/TimSweeneyEpic/status/2109705826688549304
5•astlouis44•19m ago•0 comments

IMF says AI investment is keeping global growth near 3%

https://thenextweb.com/news/imf-ai-investment-global-growth-asia
4•luu•21m ago•0 comments

Show HN: You can improve your mobile conversion rate

https://responsivetool.com
1•mohammedfz786•22m ago•0 comments

Palantir CTO: AI researchers taking up smoking; they expect AI to cure cancer

https://www.businessinsider.com/ai-researchers-smoking-ai-cure-cancer-palantir-cto-2026-10
3•healsdata•22m ago•1 comments

Making big downloads resumable in Firefox

https://lunarwatcher.codeberg.page/til/firefox/resumable-big-downloads.html
4•speckx•22m ago•0 comments

Tom Cruise film 'Digger' could lose $245M

https://www.bbc.com/news/articles/cke8re5v1pgmo
1•bookofjoe•23m ago•3 comments

Phishing emails are now baiting your AI assistant

https://www.malwarebytes.com/blog/ai/2026/10/phishing-emails-are-baiting-your-ai-assistant
2•Apollo_R•23m ago•0 comments

Ukraine hits second major tech site, expanding range of targets inside Russia

https://www.reuters.com/world/europe/russias-yandex-says-second-data-centre-hit-by-drone-attack-2...
2•amai•24m ago•0 comments