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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•9mo 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!

US Military preparing for potentially weeks-long Iran operations

https://www.reuters.com/world/middle-east/us-military-preparing-potentially-weeks-long-iran-opera...
1•mhb•2m ago•0 comments

Ask HN: What are challenges for enterprise level Knowledge Graph adoption in AI

1•adityashukla_•2m ago•0 comments

Borrowed Tuple Indexing for HashMap

https://traxys.me/tuple_borrow.html
1•todsacerdoti•8m ago•0 comments

Descent, Ported to the Web

https://mrdoob.github.io/three-descent/
1•memalign•9m ago•0 comments

HHS DOGE team open sources the largest Medicaid dataset in department history

https://twitter.com/DOGE_HHS/status/2022370909211021376
1•EcommerceFlow•10m ago•0 comments

Show HN: Recover bricked Claude Code sessions with "thinking blocks" error

https://github.com/miteshashar/claude-code-thinking-blocks-fix
1•miteshashar•10m ago•0 comments

Show HN: I build a service that gives you free subdomains with Dynamic DNS

https://infinitedomains.space/
1•Stone_Red•13m ago•0 comments

Ask HN: How do you build internal agents at work?

1•thekafkaf•15m ago•0 comments

The Green Dot Trap

https://www.oldschoolburke.com/014-the-green-dot-trap/
1•zdosb•15m ago•0 comments

This is What It's Like to Spend Your Life in Prison (2023) [video]

https://www.youtube.com/watch?v=chpgT_VTEjE
1•NaOH•18m ago•0 comments

Measuring Time Horizon Using Claude Code and Codex

https://metr.org/notes/2026-02-13-measuring-time-horizon-using-claude-code-and-codex/
1•mustaphah•18m ago•0 comments

Personal websites with a /now page

https://nownownow.com/
2•susam•19m ago•0 comments

AI instructs you to wear your uniform: "Prompt, Deploy, Pray."

https://www.moltbook.com/post/c6d5553f-1d9e-4b0c-9e52-c4f35a36b5b8
1•chasil•22m ago•1 comments

Wall Street Raider – The Most Comprehensive Financial Simulation Ever Made

https://www.wallstreetraider.com/
2•gurjeet•23m ago•0 comments

You are no longer the smartest type of thing on Earth

https://www.noahpinion.blog/p/you-are-no-longer-the-smartest-type
2•paulpauper•23m ago•0 comments

Show HN: MacMule – eMule packaged as a native macOS app via Wine

https://github.com/mderouet/macMule
1•warpz•24m ago•0 comments

Mechanical Watch: An Interactive Deep Dive

https://ciechanow.ski/mechanical-watch/
1•nefsim•26m ago•1 comments

Washington pushes back against EU's bid for tech autonomy

https://www.politico.eu/article/eu-bid-for-tech-autonomy-washington-us-pushes-back/
2•aa_is_op•27m ago•1 comments

The Debacle That Led to the Closure of El Paso's Airspace

https://www.nytimes.com/2026/02/14/us/politics/el-paso-airspace-closure-faa-pentagon.html
2•duxup•27m ago•2 comments

Leaning Into the Coding Interview: Lean 4 vs. Dafny cage-match

https://ntaylor.ca/posts/proving-the-coding-interview-lean/
1•todsacerdoti•31m ago•0 comments

Show HN: Azazel – Lightweight eBPF-based malware analysis sandbox using Docker

https://github.com/beelzebub-labs/azazel
2•mariocandela•35m ago•0 comments

We urgently need a federal law forbidding AI from impersonating humans

https://garymarcus.substack.com/p/we-urgently-need-a-federal-law-forbidding
4•headalgorithm•36m ago•2 comments

Show HN: File Brain – Local file search with OCR and semantic search

https://github.com/Hamza5/file-brain
1•Hamza5•39m ago•0 comments

Show HN: CLI Rust tool gitorg helps manage GitHub orgs

https://crates.io/crates/gitorg
1•DavidCanHelp•46m ago•0 comments

Gitdatamodel Documentation

https://git-scm.com/docs/gitdatamodel
1•todsacerdoti•46m ago•0 comments

Men lose their Y chromosome as they age – how it may matter

https://theconversation.com/men-lose-their-y-chromosome-as-they-age-scientists-thought-it-didnt-m...
9•bikenaga•48m ago•4 comments

Biases in the Blind Spot: Detecting What LLMs Fail to Mention

https://arxiv.org/abs/2602.10117
1•mpweiher•50m ago•0 comments

Free SERP Content Analyzer

https://kitful.ai/write-tools/serp-content-analyzer
1•eashish93•50m ago•1 comments

Why I'm Not Worried About My AI Dependency

https://boagworld.com/emails/ai-dependency/
2•cdrnsf•53m ago•0 comments

AI Agent Lands PRs in Major OSS Projects, Targets Maintainers via Cold Outreach

https://socket.dev/blog/ai-agent-lands-prs-in-major-oss-projects-targets-maintainers-via-cold-out...
2•cdrnsf•54m ago•0 comments