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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!

The Fisher-Yates shuffle is backward

https://possiblywrong.wordpress.com/2020/12/10/the-fisher-yates-shuffle-is-backward/
1•possiblywrong•2m ago•0 comments

Show HN: Gather, summarise and curate tech news

https://bethe.guru/
1•abhinavb05•2m ago•0 comments

Show HN: Universal Modloader – Runtime AST Injection for Python

https://github.com/drago-suzuki58/universal_modloader
1•DragoSuzuki58•8m ago•0 comments

AI and the War-Time Economy

https://artagnon.com/art/ai-war
1•artagnon•10m ago•0 comments

Pimiga5, Arm and Intel Amiga emulation at its finest [video]

https://www.youtube.com/watch?v=OFa8YWv6j98
1•doener•12m ago•0 comments

The Shop Time Experiment

https://www.macsparky.com/blog/2025/12/the-shop-time-experiment/
1•1123581321•13m ago•0 comments

Trail – hybrid, multimodal PWA that acts as your offline trail companion

https://devpost.com/software/trail-2ia5xw
1•simonpure•15m ago•0 comments

Show HN: Flock – Social todo app for accountability

https://www.flockwith.me/
1•henryaj•16m ago•0 comments

Ontario, New York announce nuclear energy agreement

https://www.cbc.ca/news/canada/toronto/ford-hochul-buffalo-newser-9.7022770
2•throw0101c•17m ago•0 comments

EU drops 2035 combustion engine ban as global EV shift faces reset

https://www.reuters.com/business/autos-transportation/eu-relent-combustion-engines-ban-after-auto...
1•geox•17m ago•0 comments

Chinese team build optical chip AI that is 100x faster than Nvidia's A100 chip

https://www.scmp.com/news/china/science/article/3336918/chinese-team-builds-optical-chip-ai-100-t...
2•didizaja•19m ago•1 comments

The hierarchy problem is strictly a geometric scaling identity

1•albert_roca•19m ago•0 comments

Show HN: Concepts Reader, a Backup Plan for My Life

https://modulovalue.com/blog/concepts-reader-a-backup-plan-for-my-life/
2•modulovalue•23m ago•0 comments

TailwindSQL – Like TailwindCSS, but for SQL Queries in React Server Components

https://github.com/mmarinovic/tailwindsql
3•ravenical•24m ago•0 comments

Sci-Fi Amiga Source and Builds

https://www.gamesthatwerent.com/2025/12/sci-fi-amiga-source-and-builds/
1•doener•25m ago•0 comments

The woman who mapped Labrador and revolutionized the literature of exploration

https://www.themarginalian.org/2025/12/18/mina-hubbard/
1•binning•26m ago•0 comments

Show HN: I built an interactive 3D brain viewer (DK Atlas)

https://neuroglance.labs.memebu.com
2•ronniebasak•26m ago•0 comments

There is no silver lining to Female Genital Mutilation

https://unherd.com/2025/12/theres-no-silver-lining-to-fgm/
1•binning•26m ago•0 comments

We may never be able to tell if AI becomes conscious, argues philosopher

https://www.cam.ac.uk/research/news/we-may-never-be-able-to-tell-if-ai-becomes-conscious-argues-p...
2•smurda•27m ago•1 comments

Cory Doctorow – Rescuing the Internet from "Enshittification" – The Daily Show [video]

https://www.youtube.com/watch?v=d2e-c9SF5nE
2•doener•27m ago•0 comments

McKinsey "Women In The Workplace" report hides what companies are doing to women

https://www.forbes.com/sites/aparnarae/2025/12/18/mckinseys-women-in-the-workplace-report-obscure...
2•binning•33m ago•0 comments

What If Readers Like A.I.-Generated Fiction?

https://www.newyorker.com/culture/the-weekend-essay/what-if-readers-like-ai-generated-fiction
2•tkgally•38m ago•4 comments

Show HN: A branching path and strategy guide for the game 'Dispatch'

https://www.dispatchchoices.com/
1•causalzap•38m ago•0 comments

White House website mysteriously streams personal finance YouTube creator

https://www.pbs.org/newshour/politics/white-house-website-mysteriously-streams-personal-finance-y...
4•hubraumhugo•38m ago•1 comments

Show HN: HN Wrapped 2025 - an LLM reviews your year on HN

https://hn-wrapped.kadoa.com?year=2025
3•hubraumhugo•39m ago•1 comments

Immersa: Open-source Web-based 3D Presentation Tool

https://github.com/ertugrulcetin/immersa
20•simonpure•40m ago•5 comments

Why Are 50k New York City Apartments Vacant?

https://www.city-journal.org/article/vacant-new-york-city-apartments-rent-control-housing
2•mhb•42m ago•1 comments

LoongArch architecture added to Debian Ports

https://lists.debian.org/debian-devel-announce/2023/08/msg00000.html
2•guerby•45m ago•1 comments

RansomLook – Open Ransomware Intelligence

https://www.ransomlook.io/
1•blahaj•47m ago•0 comments

Show HN: OpenSpecBuddy – Native macOS App for Viewing OpenSpec Data

https://github.com/evertrue/OpenSpecBuddy
1•pj4533•51m ago•0 comments