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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!

Republicans condemn Trump's racist video portraying the Obamas as apes

https://www.cbsnews.com/news/republicans-condemn-trumps-racist-video-portraying-obamas-as-apes/
1•SilverElfin•1m ago•1 comments

Generative Modeling via Drifting

https://arxiv.org/abs/2602.04770
1•fabmilo•1m ago•1 comments

Narrative-Driven Development: BDD+TDD+Living Documentation in One Workflow

https://www.test2doc.com/blog/2026/02/06/ndd/
1•dethstrobe•2m ago•0 comments

Reality is losing the deepfake war

https://www.theverge.com/podcast/874038/ai-deepfakes-war-on-reality-c2pa-labels
1•cdrnsf•3m ago•0 comments

Samsung Account.google.com

1•Musabmusin•4m ago•0 comments

Moltbook was peak AI theater

https://www.technologyreview.com/2026/02/06/1132448/moltbook-was-peak-ai-theater/
1•geox•6m ago•0 comments

Mantic Thinking:A 4-layer anomaly detection framework with cross-domain transfer

https://github.com/Cole-Cant-Code/mantic-thinking
1•ColeW•9m ago•1 comments

Central bank, with a decentralized comitee, looking for critique

https://github.com/strafaka/scylla-monetary-system
1•Strafaka•10m ago•1 comments

Robo-dogs are mapping the forest

https://www.cnn.com/2026/02/02/business/video/robo-dogs-forest-mapping-oxford-robotics-spc-digvid
2•nmstoker•15m ago•0 comments

LLMs don't hallucinate – they hit a structural boundary (RCC theory)

http://www.effacermonexistence.com/rcc-hn-1-1
2•formerOpenAI•16m ago•2 comments

Windows 11 update KB5074109 reportedly reduces gaming performance

https://www.nvidia.com/en-us/geforce/forums/geforce-graphics-cards/5/581145/windows-11-update-kb5...
2•LopRabbit•22m ago•0 comments

Turning a VLP‑16 into a "Spherical" Scanner – A Cave Mapping Project

https://foxglove.dev/blog/turning-a-vlp-16-into-a-spherical-scanner
3•msadowski•23m ago•0 comments

How to Publish to Maven Central Easily with Mill

https://mill-build.org/blog/18-how-to-publish-to-maven-central-easily-with-mill.html
2•lihaoyi•25m ago•0 comments

Show HN: Improving Prompt Injection Detection with Weighted Ensembles

https://github.com/appleroll-research/promptforest
2•appleroll•25m ago•1 comments

The Evolution of Money Printing

https://mathmeetsmoney.substack.com/p/the-great-reset-the-evolution-of
3•nhp_fermi•30m ago•0 comments

Ask HN: What are the best robot arms with car/chasis for under $500 in 2026?

2•tristenharr•31m ago•0 comments

New stealth model on OpenRouter: Pony Alpha

https://openrouter.ai/openrouter/pony-alpha
2•Alifatisk•35m ago•0 comments

Making robots useful and affordable will need better motors

https://www.bbc.com/news/articles/c5y46356zzyo
1•ENadyr•36m ago•0 comments

Show HN: Factcheck – An open-source YouTube fact-checker. I need your help

https://github.com/humanchaos/factcheck
1•humanchaos•36m ago•0 comments

Stories From 25 Years of Software Development

https://susam.net/twenty-five-years-of-computing.html
2•susam•36m ago•0 comments

Show HN: Open-source schema tooling focused on consistency for AI consumers

https://github.com/ranklabsai/ranklabs-schema
1•ranklabs•37m ago•0 comments

Synthetic Phenomenology: A framework for AI consciousness co-authored by AI

https://github.com/SyntagmaNull/synthetic-phenomenology
1•SyntagmaNull•37m ago•0 comments

Show HN: Word2Vec in Jax

https://github.com/arnavw/word2vec_jax
1•alien0006•38m ago•0 comments

Running Pydantic's Monty Rust Sandboxed Python Subset in WebAssembly

https://simonwillison.net/2026/Feb/6/pydantic-monty/
1•lumpa•39m ago•0 comments

The Trump Phone

https://www.theverge.com/gadgets/875190/trump-phone-t1-first-look-design-interview-eric-thomas-do...
2•spzb•39m ago•1 comments

The Anthropic Hive Mind

https://steve-yegge.medium.com/the-anthropic-hive-mind-d01f768f3d7b
1•cbracketdash•42m ago•0 comments

Ask HN: Any International Job Boards for International Workers?

1•15charslong•44m ago•0 comments

Show HN: Replacing NotNull and Preconditions with fluent Java assertions

https://github.com/Sympol/pure-assert
1•symplice•45m ago•0 comments

Drifting models, generate image in single step

https://xcancel.com/jiqizhixin/status/2019308224223354936
1•Alifatisk•47m ago•0 comments

Private school uses AI to teach students in just two hours a day

https://nypost.com/2026/01/30/business/new-65k-private-school-uses-ai-to-teach-students-in-just-t...
1•maerF0x0•48m ago•0 comments