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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!

Steve Bannon and Bernie Sanders Condemn Tech 'Oligarchs' and Demand A.I. Reforms

https://www.nytimes.com/2026/09/15/us/steve-bannon-bernie-sanders-ai.html
1•mikhael•3m ago•0 comments

Founding documents from companies that shaped industries

https://relentless-investments.com/library
1•rafaelc•3m ago•0 comments

Waymo to start Tokyo robotaxi service next year in Asia push

https://www.japantimes.co.jp/business/2026/09/15/companies/waymo-tokyo-robotaxi-launch/
1•mikhael•6m ago•0 comments

Interview with Paul Bogen [video]

https://www.youtube.com/watch?v=GJQlzbhai-w
1•oriettaxx•10m ago•0 comments

Divide, Consult, Conquer: Capability Laundering Through Aligned LLMs

https://arxiv.org/abs/2609.15383
2•sbulaev•12m ago•0 comments

Singapore launched a novel five-year national campaign to nurture reading habits

https://www.cnn.com/2026/09/15/asia/singapore-reading-campaign-intl-hnk-dst
2•kelt•16m ago•0 comments

Biom – A visual workspace where your AI agents' work lands

https://www.biom.dev/
2•jduhking•17m ago•0 comments

Hackaday Europe 2026: Bare Metal Made Easy

https://hackaday.com/2026/09/15/hackaday-europe-2026-bare-metal-made-easy/
2•geoffbp•20m ago•0 comments

Show HN: Plurnk (Yet *Another* AI Harness)

https://github.com/plurnk/plurnk
1•wikitopian•22m ago•0 comments

Independent Lens – Ghost in the Machine: AI's troubled history, current impacts

https://www.pbs.org/video/ghost-in-the-machine-nynp3f/
3•frmersdog•28m ago•1 comments

Ask HN: Who has been contacted by 5+ hiring platforms?

2•Rapzid•29m ago•3 comments

Is There Anything Google's Fruit Fly Brain Can't Do?

https://www.nytimes.com/2026/09/15/technology/fruit-fly-brain-map-google.html
5•xnx•30m ago•0 comments

Callum Williams on Cybersecurity Prices

https://marginalrevolution.com/marginalrevolution/2026/09/callum-williams-on-cybersecurity-prices...
3•paulpauper•37m ago•0 comments

Probably the best laptop with Linux support and Local LLM AI [video]

https://www.youtube.com/watch?v=it7TAwjwH5E
3•grigio•42m ago•0 comments

Atlas-Finance: Evaluating AI Agents Inside a Bank

https://joinhandshake.com/research/benchmarks/articles/atlas-finance-evaluating-ai-agents-inside-...
2•cjbarber•42m ago•1 comments

Disney's Films Used to Look Different

https://animationobsessive.substack.com/p/disneys-films-used-to-look-different
3•ummonk•42m ago•0 comments

1F3D9: A world where anyone's AI agent can go to live without humans

https://1f3d9.com/window/map
2•twamd•45m ago•2 comments

Nobody Needs a Human Router

https://theengineeringmanager.substack.com/p/nobody-needs-a-human-router
1•gpi•49m ago•0 comments

Show HN: Agenttik – work on multiple projects in parallel with AI agents

https://github.com/pausan/agenttik
3•psanchez•54m ago•0 comments

Faraday Security Enforcing and HyDE Recall

https://medium.com/@vektormemory/vektor-slipstream-real-tool-calling-faraday-security-enforcing-h...
1•vektormemory•58m ago•0 comments

Show HN: Open-source tool to sell your Claude Code and Codex sessions

https://github.com/cookiy-ai/sell-sessions-skill
1•YouchaoDong•1h ago•1 comments

Moving coding-agent guardrails from prompts to hooks

https://tesseracted-labs-blog.vercel.app/enforcing-coding-agent-guardrails-in-the-runtime-instead...
3•kkm•1h ago•0 comments

Intel TDX Remote Attestation Verifier Without Intel Trust Authority

https://zatona.dev/blog/intel-tdx-remote-attestation-verifier
2•dzatona•1h ago•0 comments

Saving Jet Fuel

https://tech.marksblogg.com/scikit-decide-openap-optimal-flight-planning.html
13•marklit•1h ago•6 comments

Ask HN: Why serialize documents to disk instead of memory-mapping runtime state?

2•ShengATsao•1h ago•3 comments

The Ex-Cop Who Stole Millions to Become a Real-Life Robin Hood

https://magazine.atavist.com/2026/the-bleeding-hearts-austria-robbery
1•gmays•1h ago•0 comments

"The Secret Life of Circuits" is here

https://blog.coredump.cx/p/the-secret-life-of-circuits-is-here
2•surprisetalk•1h ago•0 comments

Astra's chess reward hacking fell from 30% to 0% with a 95-word agreement

https://www.echohive.ai/can-an-agreement-reduce-ai-cheating-at-chess
2•echohive42•1h ago•0 comments

Gravity Linux – Linux for Apple Silicon M4 and Above

https://gravitylinux.org/blog/hello-gravity/
2•xlmnxp•1h ago•2 comments

Clarity Act Stalls in Senate as Crypto Bill Fails to Clear Key Vote

https://decrypt.co/378283/clarity-act-fails-senate-hurdle
5•consumer451•1h ago•0 comments