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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•7mo 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!

Malicious Chrome Extensions "Phantom Shuttle" Masquerade as a VPN to Intercept

https://socket.dev/blog/malicious-chrome-extensions-phantom-shuttle
1•feross•2m ago•0 comments

Scientists Map the Human Genome in 4D

https://news.feinberg.northwestern.edu/2025/12/22/scientists-map-the-human-genome-in-4d/
1•geox•2m ago•0 comments

Bloom: An open source tool for automated behavioral evaluations

https://alignment.anthropic.com/2025/bloom-auto-evals/
1•sonabinu•2m ago•0 comments

Your Year with ChatGPT

https://www.chatgpt.com/?q=YourYearWithChatGPT
1•FergusArgyll•4m ago•0 comments

DOJ uploaded a 12-SEC video showing Epstein attempting suicide

https://twitter.com/rtwlz/status/2003211685650374823
2•dvrp•4m ago•1 comments

Bias Is Ruining Your Life (Here's Why) [video]

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

Brimar thermionic products great British valve project

https://brimaruk.com/menugbvp/about-the-gbvp/
1•fanf2•7m ago•0 comments

Boys at her school shared AI-generated, nude images of her. She was expelled

https://abcnews.go.com/US/wireStory/boys-school-shared-ai-generated-nude-images-after-128611202
2•randycupertino•9m ago•0 comments

Rational and Irrational Belief in the Hot Hand: Evidence from "Jeopardy "

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5062536
1•PaulHoule•10m ago•0 comments

Comprehensive Migration Guide for Ingress Nginx Controller Retirement

https://ingressnginxmigration.org/
1•simjue•11m ago•0 comments

Passkeys Explained [video]

https://www.youtube.com/watch?v=xYfiOnufBSk
1•jonbaer•12m ago•0 comments

See sunrise and sunset lines overlaid on any street map

https://www.suncalc.org
1•robinwarren•12m ago•0 comments

DACs and ADCs, or there and back again

https://lcamtuf.substack.com/p/dacs-and-adcs-or-there-and-back-again
1•weinzierl•12m ago•0 comments

Blade Runner: Special Photographic Effects (2020)

https://theasc.com/articles/blade-runner-photographic-effects
1•exvi•13m ago•0 comments

The Ritual of the Deploy (2021)

https://vickiboykis.com/2021/06/20/the-ritual-of-the-deploy/
1•wonger_•13m ago•0 comments

Blade Runner: Set Design (2020)

https://theasc.com/articles/blade-runner-set-design
1•exvi•13m ago•0 comments

I'm tired of Hacker News slop

https://blog.absurdpirate.com/im-tired-of-hacker-news-slop/
5•speckx•15m ago•0 comments

2026 Observability Predictions – Part 9

https://www.apmdigest.com/2026-observability-predictions-9
1•gpi•16m ago•0 comments

Flipper Zero and Raspberry Pi Banned from NYC Mayoral Inauguration

https://www.transition2025.com/inauguration
3•MisterTea•16m ago•1 comments

Windows 11 hack: Higher SSD speeds with new Microsoft NVMe driver

https://www.notebookcheck.net/Windows-11-hack-Higher-SSD-speeds-with-new-Microsoft-NVMe-driver.11...
4•akyuu•20m ago•0 comments

Coding Agent Is a Slot Machine

https://blog.kvit.app/posts/variance-claude-vibe/
2•skolos•20m ago•0 comments

Sun's gravitational lens could reveal alien planets' surfaces – Science – AAAS

https://www.science.org/content/article/sun-s-gravitational-lens-could-reveal-alien-planets-surfaces
3•rbanffy•22m ago•0 comments

Setting Up the AWS SDK for Rust

https://rup12.net/posts/learning-rust-configuring-the-aws-sdk/
2•ruptwelve•26m ago•0 comments

List of Programmers

https://en.wikipedia.org/wiki/List_of_programmers
2•andsoitis•30m ago•2 comments

How to Submit a ChatGPT App

https://www.adspirer.com/blog/how-to-submit-chatgpt-app
2•amekala•32m ago•0 comments

AI Feynman: A physics-inspired method for symbolic regression (2020)

https://www.science.org/doi/pdf/10.1126/sciadv.aay2631
2•lisper•32m ago•0 comments

The Comprehensive Cognition Blog

https://mateolafalce.github.io/
3•lafalce•34m ago•0 comments

Blasts from the past: The Soviet ape-man scandal (2008)

https://www.newscientist.com/article/mg19926701-000-blasts-from-the-past-the-soviet-ape-man-scandal/
2•cwwc•38m ago•0 comments

Call of Duty Co-Creator and EA Executive Vince Zampella Killed in Car Accident

https://www.ign.com/articles/call-of-duty-co-creator-respawn-co-founder-and-ea-executive-vince-za...
6•andsoitis•38m ago•1 comments

Qwen-Image-Layered: Layered Decomposition for Inherent Editablity

https://github.com/QwenLM/Qwen-Image-Layered
2•_____k•38m ago•0 comments