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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!

Objects as big as a protein can be in two places at once

https://www.science.org/content/article/objects-big-protein-can-be-two-places-once-experimental-s...
1•QueensGambit•6m ago•0 comments

The Beast That Promises Completion

https://www.robpanico.com/articles/display/?entry_short=the-beast-that-promises-completion
2•retrocog•9m ago•0 comments

Nix-run: run Nix derivations without nix3 or flakes

https://tangled.org/weethet.bsky.social/nix-run
2•todsacerdoti•9m ago•0 comments

SAS Airbus A320 initiates take-off roll on taxiway at Brussels Airport

https://www.aviation24.be/airlines/scandinavian-airlines-system-sas/airbus-a320-initiates-take-of...
2•amelius•9m ago•0 comments

Invention of DNA "Page Numbers" Opens Up Possibilities for the Bioeconomy

https://www.caltech.edu/about/news/invention-dna-page-numbers-synthesis-kaihang-wang
2•dagurp•11m ago•0 comments

Show HN: Open Finance Platform

https://github.com/finmars-platform/finmars-core
2•qwertypk•11m ago•0 comments

Digital form services by Govforms Digital

https://govforms.co.uk/
1•oriettaxx•11m ago•0 comments

mkincl: A simple way to reuse Makefiles and scripts across multiple repositories

https://github.com/mkincl/mkincl
1•tosh•11m ago•0 comments

Tao: An experiment reviving an archaic practice from the era of Gauss

https://mathstodon.xyz/@tao/116022211452443707
1•ColinWright•12m ago•1 comments

How Containers Work: Building Container Networking from Scratch

https://amalchandran.xyz/journals/building-container-networking-from-scratch-part-1/
2•amalChandru•16m ago•0 comments

Show HN: Markshift – because every app decided to invent its own Markdown

https://www.markshift.net/
1•vrennat•16m ago•0 comments

AI bot gives customer 80% discount, supplier can't deliver

https://old.reddit.com/r/LegalAdviceUK/comments/1qxc7x9/an_ai_chatassist_created_and_offered_a_cu...
1•shaman1•17m ago•0 comments

Quiet – Private messaging. No servers

https://tryquiet.org/
1•MzHN•17m ago•0 comments

Litres of untreated sewage flow into the sea in New Zealand

https://www.theguardian.com/world/2026/feb/06/wellington-sewage-leak-sea-new-zealand
1•tosh•17m ago•0 comments

Exasol Virtual Schemas: The Key to Flexible Deployments

https://www.exasol.com/blog/exasol-virtual-schemas/
1•exagolo•18m ago•0 comments

LFortran Compiles Lapack

https://lfortran.org/blog/2026/02/lfortran-compiles-lapack/
2•zaikunzhang•22m ago•1 comments

I'm tired of trying to make vibe coding work for me

https://www.youtube.com/watch?v=ly-GM3aYgfQ
2•birdculture•26m ago•1 comments

Ace-Step 1.5: Pushing the Boundaries of Open-Source Music Generation

https://ace-step.github.io/ace-step-v1.5.github.io/
2•tomduncalf•27m ago•0 comments

14 Minutes → 4 Seconds: A Tale of Switching from RSpec to Minitest

https://twitter.com/ryanrhughes/status/2019258699001294911
2•Andugal•29m ago•0 comments

The Marvel Cinematic Multiverse and How It Works

https://medium.com/luminasticity/the-marvel-cinematic-multiverse-and-how-it-works-db2f7e327abe
1•bryanrasmussen•29m ago•0 comments

Nextcloud Recognized as a Digital Public Good

https://nextcloud.com/blog/nextcloud-recognized-as-a-digital-public-good/
2•kieto•30m ago•0 comments

Statin pills much safer than advertised, major review finds

https://www.bbc.com/news/articles/c80142p2g00o
1•tchalla•31m ago•0 comments

A new bill in New York would require disclaimers on AI-generated news content

https://www.niemanlab.org/2026/02/a-new-bill-in-new-york-would-require-disclaimers-on-ai-generate...
2•giuliomagnifico•40m ago•0 comments

How defensible is Gmail's position today?

3•p_zuckerman•44m ago•2 comments

What "Premium Tarot Readers" Means (and Why the Term Is Often Misused)

https://medium.com/@enrique_15267/what-premium-tarot-readers-actually-means-and-why-the-term-is-o...
1•astroideal•45m ago•1 comments

Most statin side-effects not caused by the drugs, study finds

https://www.theguardian.com/society/2026/feb/05/majority-statins-side-effects-not-caused-by-drug
2•6LLvveMx2koXfwn•46m ago•0 comments

Show HN: Emotion as cognitive infrastructure in AI, not just output

https://twitter.com/NexAIOS/status/2019352896840851834
2•NexAIOS•47m ago•2 comments

A/B test yourself vs. code agent

https://arturkesik.com/blog/ab-test-you-vs-llm/
1•arturkesik•47m ago•0 comments

When there is No Internet, there is Kiwix

https://kiwix.org/en/
2•doener•48m ago•0 comments

The world’s first sodium-ion battery EV is here and it could be a game changer

https://electrek.co/2026/02/05/first-sodium-ion-battery-ev-debuts-game-changer/
1•breve•50m ago•0 comments