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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!

A custom Blender-to-Godot addon that makes level and gameplay creation easy

https://github.com/papercraftgames/folded-paper-engine
1•james2doyle•3m ago•0 comments

Show HN: VisiLens – Local-First and Fast Web GUI for VisiData

1•PStarH•5m ago•0 comments

Giving men a common antidepressant could help tackle domestic violence

https://theconversation.com/giving-men-a-common-antidepressant-could-help-tackle-domestic-violenc...
1•defrost•10m ago•0 comments

TikTok ramen spot?YouTube rooftop bar? TravelTreasure saves your scroll as a map

https://traveltreasure.app/
1•meghagulati•11m ago•0 comments

Amazon EKS Capabilities: Managed Argo CD, ACK, and KRO

https://aws.amazon.com/blogs/aws/announcing-amazon-eks-capabilities-for-workload-orchestration-an...
1•csantanapr•15m ago•0 comments

How Is My Idea?

https://adityadeshlahre.github.io/posts/hire-someone/
1•adityadeshlahre•15m ago•0 comments

Researchers isolate elusive cells that may slow down aging

https://www.timesofisrael.com/medical-holy-grail-israeli-researchers-isolate-elusive-cells-that-m...
1•mhb•16m ago•0 comments

Meta Superintelligence Labs: Scaling Agent Learning via Experience Synthesis

https://arxiv.org/abs/2511.03773
1•babelfish•21m ago•0 comments

The Silent (R)evolution of SAT

https://cacm.acm.org/research/the-silent-revolution-of-sat/
1•RebelPotato•22m ago•0 comments

The Complexity of Simplicity [video]

https://www.youtube.com/watch?v=Cum5uN2634o
1•bestinterest•35m ago•0 comments

Abstraction, but for Robots

https://stackoverflow.blog/2025/12/02/abstraction-but-for-robots/
1•quapster•36m ago•0 comments

Why Replicate is joining Cloudflare

https://blog.cloudflare.com/why-replicate-joining-cloudflare/
4•chmaynard•37m ago•0 comments

New FDA-approved glasses can slow nearsightedness in kids

https://abcnews.go.com/US/wireStory/new-fda-approved-glasses-slow-nearsightedness-kids-127991874
2•plun9•38m ago•0 comments

Show HN: Eatelligence – Scan pantry items, get AI recipe suggestions

https://apps.apple.com/us/app/eatelligence/id6755645485
1•xsonerx•39m ago•0 comments

Ask HN: Did I do a 5 year BS to become an algo whore?

1•leetcodewhore•40m ago•0 comments

Show HN: Imposter Game Oneline

https://impostergame.win/
1•tomstig•41m ago•1 comments

Show HN: Webclone.js – A simple tool to clone websites

https://github.com/jademsee/webclone
1•jadesee•45m ago•0 comments

AlphaFold is five years old – these charts show how it revolutionized science

https://www.nature.com/articles/d41586-025-03886-9
3•digital55•49m ago•0 comments

High School Dropout to OpenAI Researcher [video]

https://www.youtube.com/watch?v=vq5WhoPCWQ8
1•gmays•51m ago•0 comments

Frequently Asked Unicycling Questions

https://vale.rocks/posts/unicycle-faq
5•edent•51m ago•0 comments

OWASP LLM Top 10 2026: Predicted New Threats

https://scanmyllm.com/owasp-llm-top-10-2026
1•adam_ftt•55m ago•1 comments

Byte-Level Tokenizers Unavoidably Enable LLMs to Generate Ill-Formed UTF-8

https://arxiv.org/abs/2511.05578
1•PaulHoule•57m ago•0 comments

Draft: Challenge for Persistent DNS TXT Record Validation

https://datatracker.ietf.org/doc/html/draft-sheurich-acme-dns-persist-01
1•wrayjustin•58m ago•0 comments

Show HN: Personal AI Assistant

https://chat.gmujtaba.com/
1•sumo86•59m ago•0 comments

Energy Department Renames NREL 'National Lab of the Rockies'

https://www.nrel.gov/news/detail/press/2025/news-release-energy-department-renames-nrel-%27nation...
3•zekrioca•59m ago•2 comments

Responsible Bot Operation

https://cryptography.dog/blog/responsible-bot-operation/
1•jllyhill•1h ago•0 comments

Apple Releases Open Weights Video Model

https://starflow-v.github.io
3•vessenes•1h ago•0 comments

It's No Dodo, but This Newly Discovered Bird Could Share the Same Fate

https://www.nytimes.com/2025/12/02/science/birds-dodo-slaty-masked-tinamou.html
1•fleahunter•1h ago•0 comments

Pushlog.ai – Summaries of GitHub push notifications

https://pushlog.ai/
1•CarterDixon•1h ago•1 comments

Ask HN: I have a job offer in Google MTV from Bangalore. Should I take it?

1•titirx•1h ago•3 comments