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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•6mo 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!

My experience learning AI from scratch and why it changed how I see coding

1•ViktorKuz•1m ago•0 comments

Ask HN: Is a human brain more like a CPU or an FPGA?

1•arduinomancer•1m ago•0 comments

X shuts down the European Commission's ad account the day after major fine

https://www.engadget.com/social-media/x-shuts-down-the-european-commissions-ad-account-the-day-af...
1•MilnerRoute•8m ago•0 comments

I created A-Lang – a new lightweight language, focused on simplicity and speed

https://alang-doc.vercel.app/
1•alexandrelanda•12m ago•2 comments

Optimizing Associative Operations (2015)

https://ericlippert.com/2015/10/27/optimizing-associative-operations/
1•mooreds•13m ago•0 comments

For a Literary Saint, Margaret Atwood Can Sure Hold a Grudge

https://www.nytimes.com/2025/11/01/books/review/margaret-atwood-book-of-lives-memoir.html
3•mooreds•13m ago•0 comments

Navigating the future of AI agent security with Dan Moore [audio]

https://overcommitted.dev/ep-36-navigating-the-future-of-ai-agent-security-with-dan-moore/
1•mooreds•14m ago•0 comments

Using AI to Modernize Ubuntu Error Tracker Produced Code That Was 'Plain Wrong'

https://www.phoronix.com/news/Ubuntu-Error-Tracker-AI-Error
1•Lockal•16m ago•0 comments

Sitekick – simple AI-driven web chat and lead-capture for any website

1•nagendraallam•16m ago•1 comments

Claude Code Tips

https://agenticcoding.substack.com/p/32-claude-code-tips-from-basics-to
2•ykdojo•18m ago•0 comments

First explorations in Indian classical music

https://andrewbatson.com/2025/10/11/first-explorations-in-indian-classical-music/
5•surprisetalk•19m ago•0 comments

Ignore the pessimists – we are living through a literary golden age

https://www.commonreader.co.uk/p/ignore-the-pessimists-we-are-living
3•surprisetalk•19m ago•0 comments

(Dis)Assembling Experience

https://www.raphkoster.com/games/presentations/disassembling-games/
2•surprisetalk•20m ago•0 comments

So What Should We Call This – A Grue Jay?

https://cns.utexas.edu/news/research/so-what-should-we-call-grue-jay
2•surprisetalk•20m ago•0 comments

Why Fighter Jets Ban 90% of C++ Features [video]

https://www.youtube.com/watch?v=Gv4sDL9Ljww
14•AareyBaba•24m ago•4 comments

Musicians must embrace 'unstoppable force' of AI, Eurythmics' Dave Stewart urges

https://www.theguardian.com/music/2025/dec/05/musicians-must-embrace-unstoppable-force-of-ai-eury...
2•binning•28m ago•2 comments

Supercomputer Creates One of the Most Realistic Virtual Brains Ever Seen

https://www.sciencealert.com/supercomputer-creates-one-of-the-most-realistic-virtual-brains-ever-...
2•wjSgoWPm5bWAhXB•28m ago•0 comments

Why do so many girls in Blackpool want to become boys?

https://juliebindel.substack.com/p/why-do-so-many-girls-in-blackpool-a6a
2•binning•29m ago•0 comments

Internet became 'enshittified' – and how to fix it

https://www.rnz.co.nz/news/on-the-inside/581142/how-internet-became-enshittified-and-how-to-fix-it
5•billybuckwheat•30m ago•0 comments

Show HN: Honest Reviews Club – Deep, transparent digital product reviews

https://honest-reviews.club/
2•launchzilla•33m ago•0 comments

Rape victims will no longer be depicted as serial liars in England and Wales

https://www.theguardian.com/society/2025/dec/02/rape-victims-england-wales-protected-serial-liar-...
6•binning•36m ago•0 comments

A series of tricks and techniques I learned doing tiny GLSL demos

https://blog.pkh.me/p/48-a-series-of-tricks-and-techniques-i-learned-doing-tiny-glsl-demos.html
2•ux•40m ago•0 comments

Who Invented ClassPass?

https://twitter.com/JonasBrandon/status/1997694250692293069
2•metricmissions•40m ago•0 comments

"They're not designed for that": An ocean robot's lucky Antarctic discoveries

https://reportearth.substack.com/p/one-of-my-best-stories-was-about
3•MaysonL•43m ago•0 comments

Key (Programming) Language Features – Does Yours Qualify?

https://wiki.c2.com/?KeyLanguageFeature
2•gurjeet•46m ago•0 comments

Future of Vancouver's repair cafés uncertain after city cuts funding for 2026

https://www.cbc.ca/news/canada/british-columbia/city-of-vancouver-cuts-funding-repair-cafe-9.7006210
3•cf100clunk•48m ago•0 comments

Did Asteroids Invent Gum Billions of Years Ago?

https://www.universetoday.com/articles/did-asteroids-invent-gum-billions-of-years-ago
4•fcpguru•51m ago•0 comments

Thoughts on AI progress (Dec 2025)

https://www.dwarkesh.com/p/thoughts-on-ai-progress-dec-2025
3•paulpauper•56m ago•0 comments

How Much Are US Firms Using AI Tools?

https://conversableeconomist.com/2025/12/02/how-much-are-us-firms-using-ai-tools/
3•paulpauper•56m ago•0 comments

Pyramids to Columns

https://blog.andrewyang.com/p/pyramids-to-columns
4•paulpauper•56m ago•0 comments