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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!

"AI is someone else's GPU"

https://waterpigs.co.uk/notes/5cVMNm/
1•jruohonen•3m ago•0 comments

Show HN: Web Speed – A shared web-map registry for AI agents (MCP, open source)

https://www.getwebspeed.io/
1•Dominic_P•6m ago•0 comments

Ask HN: Is ChatGPT suppose to spit out its own instructions that easy?

1•ipster_io•12m ago•0 comments

Richard Scolyer Has Died

https://www.bbc.com/news/articles/c14yz5jg476o
1•nicwilson•13m ago•1 comments

Centuries-old logbooks reveal how bowhead whales are recovering from near-extin…

https://theconversation.com/centuries-old-logbooks-reveal-how-bowhead-whales-are-recovering-from-...
1•rbanffy•14m ago•0 comments

We Are in the Anthropocene–Now What?

https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2025EF007730
1•littlexsparkee•14m ago•0 comments

What we know about the plan to give Americans an equity stake in AI

https://www.ft.com/content/8559a3f9-86de-4a1c-8a75-6623e83e6a00
1•samvher•14m ago•1 comments

Show HN: Avibe – your AI agent lives on your machine, reachable from your phone

https://github.com/avibe-bot/avibe
1•alex_metacraft•15m ago•0 comments

Subscribe to My Substack:)

https://bionorthtech.substack.com/subscribe
1•hellocock•15m ago•0 comments

Qanah – WireGuard-Like P2P VPN

https://github.com/xlmnxp/qanah
1•xlmnxp•19m ago•0 comments

KNN early termination in Manticore Search

https://medium.com/@s_nikolaev/knn-early-termination-in-manticore-search-39e55ac18d62
1•snikolaev•19m ago•0 comments

Show HN: Agam – Activation-based memory for Claude Code, not retrieval

https://github.com/CrypticCortex/agam
1•aghoraguru•22m ago•0 comments

Nithya Raman knocks Spencer Pratt off second place in LA mayor's race

https://nypost.com/2026/06/07/us-news/nithya-raman-knocks-spencer-pratt-off-second-place-in-la-ma...
2•SilverElfin•24m ago•4 comments

Show HN: SoundScope - PS1 Audio Visualizer in your Browser

https://soundscope.greg.technology/
1•gregsadetsky•25m ago•0 comments

AI for the Operator

https://github.com/cerebrocybersolutions/cerebro-whitepaper
1•cerebrocyber•26m ago•0 comments

You Can Walk to the World Cup in New Jersey. But Should You?

https://www.nytimes.com/2026/06/07/opinion/world-cup-new-york-new-jersey-transit-walk.html
1•berns•26m ago•0 comments

Reward Hacking, the Loophole Lesson: Winning the Signal, Losing the Reason

https://medium.com/@yassien/reward-hacking-the-loophole-lesson-winning-the-signal-losing-the-reas...
1•yassien•29m ago•0 comments

Show HN: My home server got unplugged, so I built a recovery CLI

https://homebutler.dev
2•swq115•29m ago•0 comments

The deadliest poison known to AI

https://iocaine.madhouse-project.org/
1•jruohonen•33m ago•0 comments

Show HN: I put my Claude Code rate-limit burndown in the status line

https://www.aimhuge.com/blog/claude-code-status-line
2•fotoflo•34m ago•1 comments

Show HN: Organizer Timelines for everything you want to remember

https://www.useorganizer.com/
1•mcapodici•40m ago•0 comments

Flutter OTA Code Push, Shorebird Alternative Open Source Flutter Patcher

https://github.com/xuelinger2333/flutter_patcher
1•faangguyindia•44m ago•1 comments

Is this the correct interpretation? (users use too many tabs?)

https://ux.stackexchange.com/questions/123870/why-do-browsers-allow-users-to-open-more-tabs-than-...
1•LearnYouALisp•55m ago•3 comments

Nvidia/Nvidia-Nemotron-3-Ultra-550B-A55B-BF16

https://huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16
2•geoffbp•55m ago•0 comments

IMF warns inflation risks remain elevated ahead of Fed meeting

https://www.reuters.com/world/imf-urges-fed-caution-inflation-warsh-prepares-chair-first-policy-m...
1•latentframe•56m ago•0 comments

Bumblebees have tiny brains but can solve problems like chimps and elephants

https://www.npr.org/2026/06/07/nx-s1-5846947/bumblebees-problem-solving-research
4•RyeCombinator•57m ago•1 comments

SDSU Wired Its Dorms with 1,300 AI Cameras Without Telling Students

https://reclaimthenet.org/sdsu-adds-1300-ai-cameras-330-in-student-dorms
10•iamnothere•58m ago•1 comments

PEP 668 – Marking Python base environments as "externally managed"

https://peps.python.org/pep-0668/
1•thatxliner•1h ago•0 comments

Technical details of the attack described by Markoff in NYT

http://www.kohala.com/start/shimomura.95jan25.txt
2•jruohonen•1h ago•0 comments

1k Data Breaches Later, the Disclosure Lag Is Worse

https://www.troyhunt.com/1000-data-breaches-later-the-disclosure-lag-is-worse-than-ever/
21•882542F3884314B•1h ago•2 comments