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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!

Advertising is coming to AI chatbots and it could influence the answers you get

https://theconversation.com/advertising-is-coming-to-ai-chatbots-and-it-could-influence-the-answe...
2•rdmuser•2m ago•0 comments

The Neurobiology of Digital Addiction

https://zake.app/articles/neurobiology-digital-addiction-dopamine-cortical-thinning-brain-recalib...
1•Vishal_Max•2m ago•0 comments

Lawsuit accuses AI security company of publishing hallucinated findings

https://www.theregister.com/legal/2026/07/02/startup-sues-palo-alto-networks-koi-security-saying-...
1•onesandofgrain•3m ago•0 comments

Freeriding and Rebellion: An Investigation of Open Source Vendor Relicensing

https://onlinelibrary.wiley.com/doi/full/10.1111/isj.70060
1•Tomte•3m ago•0 comments

Build a company/domain-specific harness with OSS Python framework

https://cayu.dev/
1•zamir_akimbekov•4m ago•0 comments

Show HN: Zill

2•yhussain1110•7m ago•0 comments

Hook and Squeeze

https://data4democracy.substack.com/p/hook-and-squeeze
1•ravenical•9m ago•0 comments

Anthropic to fold Claude AI features into one interface, launches document tools

https://www.reuters.com/business/media-telecom/anthropic-fold-claude-ai-features-into-one-interfa...
2•tartoran•11m ago•0 comments

Show HN: An ObjC-like compiler for Mac ARM, x86_64(Linux, Win), WASM, & others

1•spacedcowboy•12m ago•0 comments

Debian 13 for Synology DS115j

https://github.com/manowark/ds115j
1•CTOSian•12m ago•0 comments

Where's My Alien Mind?

3•throwaway63467•12m ago•0 comments

The Search for Markdown Viewer Is Over

https://www.blogetcetera.com/2026/the-search-for-markdown-viewer-is-over/
1•RivoLink•12m ago•1 comments

Handles on Mainnet

https://spacesprotocol.org/blog/handles-on-mainnet/
2•ca98am79•12m ago•0 comments

Voxiferi wants to stop bad AI data at the door

https://opensourcewatch.beehiiv.com/p/voxiferi-wants-to-stop-bad-ai-data-at-the-door
1•CrankyBear•15m ago•0 comments

Sudd

https://en.wikipedia.org/wiki/Sudd
2•thunderbong•16m ago•0 comments

Victory: Court, Using a New Test, Rules Embedding Links Is Legal

https://www.eff.org/deeplinks/2026/09/victory-court-using-new-test-rules-embedding-links-legal
1•hn_acker•17m ago•0 comments

Woman's rare genetic mutations make her unable to feel physical pain or anxiety

https://www.popularmechanics.com/science/a73721080/scientists-found-way-to-dim-pain/
1•bookofjoe•17m ago•1 comments

GitHub Is Having Trouble Counting Things

https://chuckgreenman.com/2026/09/16/counting-at-github
4•chuckgreenman•18m ago•0 comments

How the Meta Settlement Silences Youth Activism

https://www.eff.org/deeplinks/2026/09/meta-settlement-yet-another-example-online-youth-organizing...
4•hn_acker•18m ago•0 comments

GPT6+Corv= infrastructure prod work is finally feasible

https://github.com/khalid-src/corv-client
2•khalid_0002•19m ago•1 comments

Show HN: Play subway surfer inside your Claude Code terminal

https://github.com/lucastononro/cc-subway
2•ltononro•20m ago•2 comments

Shitty Maps and Special People

https://summerlightning.substack.com/p/shitty-maps-and-special-people
1•jger15•20m ago•0 comments

Qwen3.8 models outperforms Fable 5 Using GVS5H Harness

https://github.com/slee-persis/GVS5H
3•pggues•21m ago•1 comments

Forespec – catches what your AI coder didn't know to ask

https://github.com/SteveWeed79/forespec
1•steveweed79•21m ago•0 comments

Show HN: TypeScript parser for AIXM, the FAA/EUROCONTROL aviation data format

https://github.com/devladpopov/aixm-parser
3•devladpopov•21m ago•0 comments

Why Beyond Vanilla RAG

https://medium.com/@NikoZero11/your-rag-pipeline-doesnt-need-more-retrieval-it-needs-better-decis...
1•Natashash23•21m ago•0 comments

ER visits for gambling disorders doubled after expanded online gambling market

https://temertymedicine.utoronto.ca/news/emergency-room-visits-gambling-disorders-nearly-doubled-...
5•geox•22m ago•0 comments

Show HN: Understanding your Claude Code with trajectory segmentation

https://github.com/lucastononro/cc-traj-seg
1•ltononro•22m ago•0 comments

Map of America

https://mapofamerica.wtf/
2•rdoherty•22m ago•0 comments

Show HN: Make Claude Code a workspace genius

https://slaunt.ai
1•Kerode0•23m ago•0 comments