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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•1y 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!

Vector2Variant: Discovery of Genetic Associations Without Phenotype Engineering

https://www.medrxiv.org/content/10.64898/2026.04.10.26350624v1
1•car•2m ago•0 comments

GetKeys – Create, delete, rotate API keys without visiting a dashboard

https://github.com/weilueluo/getkeys
1•weilueluo•2m ago•0 comments

Looking for a Remote Engineering Role

1•simplisticated•8m ago•0 comments

DEI and Decolonial activists infiltrated NASA; Some are still there

https://twitter.com/brianchau57/status/2111065903471509983
3•MrBuddyCasino•10m ago•0 comments

Show HN: Gridmark – make logos by tweaking shapes on a grid

https://gridmark.dev/
1•mattems•14m ago•0 comments

Ario An experimental framework for explicit epistemic transparency and M0 auditi

https://zenodo.org/records/23305805
1•xx47•16m ago•0 comments

DeepSeek-v4.1-Flash-1017: Wish-Driven Programming Made Real

https://api-docs.deepseek.com/news/news261017/
1•gainsurier•17m ago•0 comments

Show HN: A Game of Life sandbox where any pattern is a shareable link

https://www.seloby.com/life/
2•yooo00•20m ago•0 comments

Survey: How do you create the video demo for your project or product?

1•loveTech•20m ago•0 comments

Trait Causal Models: GWAS, perturbations to predictive models of human biology

https://zenodo.org/records/23426258
1•car•25m ago•0 comments

MAGS: Machine-checked guarantees on specified safety properties in AI code

https://arxiv.org/abs/2609.19391
1•donk8r•28m ago•0 comments

Cellular scaling laws in the mammalian brain

https://www.cell.com/cell/fulltext/S0092-8674(26)01017-2
1•car•28m ago•0 comments

Automattic's New Lawyers Lose Bid for More Time in Legal Fight with WP Engine

https://www.therepository.email/automattics-new-lawyers-lose-bid-for-more-time-in-legal-fight-wit...
1•RobotToaster•32m ago•0 comments

Show HN: Programming Language Cup: same tasks in 32 langs, pick the winner

https://chalmovsky.com/prog-lang-cup/plain/
1•chalmovsky•33m ago•1 comments

Hybrid ML-KEM costs bytes, not CPU: X25519 vs. ML-KEM key exchange benchmark

https://github.com/RayDCodes/pqc-migration-bench
1•ddruhin•33m ago•0 comments

EmbedIDS: Open-source intrusion detection for embedded systems and physical AI

https://embedids.linuscent.com/main/
1•samiralavi•34m ago•0 comments

Ask HN: What was your favourite thread in the last two weeks?

1•Towaway69•39m ago•2 comments

What's IncusOS?

https://linuxcontainers.org/incus-os/introduction/
1•Bluestein•40m ago•0 comments

Show HN: Club Pigeon – A multiplayer pigeon park with SNES-style minigames

https://clubpigeon.lol
2•nilsio•49m ago•0 comments

How Tree Rings Challenged the Myth of American Wilderness

https://www.newyorker.com/science/elements/how-tree-rings-challenged-the-myth-of-american-wilderness
3•bookofjoe•52m ago•1 comments

Deleted AI Chats May Leave Clues Behind

https://news.research.gatech.edu/2026/10/13/deleted-ai-chats-may-leave-clues-behind
1•giuliomagnifico•54m ago•0 comments

General Magic: Oral History of the Influential Tech Company

https://nymag.com/intelligencer/2018/08/general-magic-oral-history-of-the-influential-tech-compan...
1•mpweiher•59m ago•0 comments

Show HN: WGSL linter with Tint parity and a full suite of LSP niceties

https://github.com/elringus/wgsl-linter
1•Elringus•1h ago•0 comments

EU Defence Commissioner Kubilius: Pax Americana Is Over. ^

https://www.reddit.com/r/BuyFromEU/comments/1x7inr3/eu_defence_commissioner_kubilius_pax_american...
3•doener•1h ago•1 comments

Brutal – Framework for Making Games

https://github.com/ahwootech/BRUTAL
2•ivanjermakov•1h ago•0 comments

Photonic Chip Cuts Cost of Hunting Exoplanets (2024)

https://spectrum.ieee.org/photonic-integrated-circuit
1•zeristor•1h ago•0 comments

Rapid alternation of conscious and suppressed representations in primate brains

https://www.biorxiv.org/content/10.64898/2026.10.15.759299v1
2•zby•1h ago•0 comments

Show HN: A web workspace for trying FLUX 3 Klein

https://flux3klein.net
1•xiaosen•1h ago•0 comments

Scaling Indic Pretraining: 2.8T Tokens and an Open Data Generation Pipeline

https://huggingface.co/blog/nvidia/scaling-indic-pretraining
1•porridgeraisin•1h ago•0 comments

Red Dead Redemption 2 – Part 1460 – Old PC [video]

https://www.youtube.com/watch?v=0OfHSE_mhaw
1•doener•1h ago•0 comments