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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•8mo 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!

Valve facing UK lawsuit over pricing, commissions

https://www.reuters.com/legal/litigation/video-game-giant-valve-facing-uk-lawsuit-over-pricing-co...
1•HelloUsername•2m ago•0 comments

Bassoontracker, Tracking in the Browser

https://www.stef.be/bassoontracker/
2•jdboyd•5m ago•0 comments

Show HN: Get recommendations or convert agent skills directly in your workspace

https://www.agenstskills.com/
1•rohitghumare•5m ago•0 comments

YSK: Firefox Nightly Chatbot sidebar supports Localhost:8080

1•ionetz•7m ago•0 comments

An explosion in interconnect complexity

https://semiengineering.com/an-explosion-in-interconnect-complexity/
1•teleforce•11m ago•0 comments

Whither World Leaders' Contemplation of AI as Jesus Replacement

https://fotizo.substack.com/p/whither-world-leaders-contemplation
1•FotizoPhronesis•12m ago•0 comments

Show HN: Brickcheck.io – A website to replace my property search spreadsheets

https://brickcheck.io/
1•ravibhatt•14m ago•1 comments

Bi-Directional Accountability: Leadership Without the Bullshit

https://medium.com/the-inconvenient-truth/bi-directional-accountability-the-leadership-shift-most...
1•lifeisstillgood•16m ago•0 comments

China hacked Downing Street phones for years

https://www.telegraph.co.uk/news/2026/01/26/china-hacked-downing-street-phones-for-years/
1•isaacfrond•17m ago•0 comments

Lawsuit Alleges That WhatsApp Has No End-to-End Encryption

https://www.pcmag.com/news/lawsuit-alleges-that-whatsapp-has-no-end-to-end-encryption?test_uuid=0...
2•isaacfrond•18m ago•0 comments

Embracing sauna culture can lower dementia risk and boost brain health

https://www.newscientist.com/article/2512893-embracing-sauna-culture-can-lower-dementia-risk-and-...
2•kensai•21m ago•1 comments

EU and India sign landmark trade agreement

https://www.theguardian.com/world/live/2026/jan/27/european-union-india-trade-deal-ukraine-greenl...
2•Archelaos•21m ago•0 comments

Pandas 3 marks the most significant evolution of Pandas in over ten years

https://www.reddit.com/r/Python/s/oMldsGf0VP
1•datapythonista•25m ago•0 comments

Show HN: My attempt to visualize 'Market Timing' risk (Python/Chart.js)

1•codeandcapital•26m ago•0 comments

The Enclosure feedback loop: how LLMs sabotage by privatizing a public good

https://michiel.buddingh.eu/enclosure-feedback-loop
2•internet_points•29m ago•0 comments

High Performance LLM Inference Operator Library from Tencent

https://github.com/Tencent/hpc-ops
1•polyrand•29m ago•0 comments

Pavel Durov: "You'd have to be braindead to believe WhatsApp is secure in 2026"

https://twitter.com/durov/status/2015854422866469222
2•martinlaz•30m ago•0 comments

For Our Machine Friends

https://toasterdump.com/2026/01/18/for-our-machine-friends/
1•xxyxx•32m ago•0 comments

Blocking Claude

https://aphyr.com/posts/403-blocking-claude
1•Tomte•34m ago•0 comments

How to audit your LinkedIn profile

1•semihayat•35m ago•0 comments

Il dominio della narrazione, ovvero spegnere il cervello è bello

https://cinemanuele.substack.com/p/il-dominio-della-narrazione-ovvero
2•grouchoromano•38m ago•0 comments

Show HN: RustyBoard – The largest collection of active Rust jobs and analytics

https://rustyboard.com
1•louispog•40m ago•0 comments

Anti-pop and an alien sigil: how Aphex Twin overtook Taylor Swift

https://www.theguardian.com/music/2026/jan/27/aphex-twin-taylor-swift-soundtrack-to-gen-z-life-on...
3•quakeguy•42m ago•1 comments

The Complete SEO Guide for SaaS Startups in 2026

https://kitful.ai/blog/the-complete-seo-guide-for-saas-startups-in
1•eashish93•43m ago•0 comments

Digital non-Foster-inspired electronics for broadband impedance matching

https://www.nature.com/articles/s41467-024-48861-6
1•teleforce•43m ago•0 comments

Say no to linked lists as a "standard" data structure (2019)

https://rust-unofficial.github.io/too-many-lists/#an-obligatory-public-service-announcement
1•mefengl•46m ago•0 comments

mcelog: Logs and accounts machine checks on modern x86 Linux systems

https://www.mcelog.org/
1•teleforce•47m ago•0 comments

Show HN: Takes – A Daily Chess Solitaire Game

https://takes.labs.clevergoat.com
1•juannyp•52m ago•0 comments

You can't open 2 cameras with getUserMedia at same time on Android and iOS

https://tony-xlh.github.io/getUserMedia-multiple-camera/
1•julienreszka•55m ago•1 comments

GIC, Sequoia, Index purchase Notion shares in private tender offer

https://www.notion.com/blog/gic-sequoia-index-purchase-notion-shares
1•doppp•55m ago•0 comments