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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!

LLM

https://www.seangoedecke.com/what-requirements-dont-you-have/
1•saikatsg•23s ago•0 comments

Keyword search ties a purpose-built memory layer on 200 LongMemEval questions

https://www.memstrata.dev/
2•yadu989•1m ago•0 comments

How electric school buses power 1,000 homes in California

https://electrek.co/2026/10/20/how-electric-school-buses-power-1000-homes-in-california-and-make-...
2•zzzeek•2m ago•0 comments

Claude designed protein binders against scorpion neurotoxins

https://www.anthropic.com/research/claude-scorpion-toxin-binder-design
1•artninja1988•2m ago•0 comments

Offihito on the XERJ Corpus Hub

https://hub.xerj.org/contributors/Offihito
1•herculez•4m ago•0 comments

UK wages grew by annual 3.7% in three months to August, ONS says

https://www.reuters.com/world/uk/uk-wages-grew-by-annual-37-three-months-august-ons-says-2026-10-20/
1•frank_clover•5m ago•0 comments

Show HN: iOS location based traveler's currency conversion with tax estimations

https://www.smartercurrency.app
1•rock_artist•5m ago•0 comments

CRA Stewardship Guidelines for Red Hat Supported Open Source

https://access.redhat.com/security/eu-cyber-resilience-act-stewardship-guidelines
1•Tomte•6m ago•0 comments

Show HN: Ankita – an open-source personal AI companion for the desktop

https://github.com/akyourowngames/A.N.K.I.T.A
1•krishverma_2010•6m ago•0 comments

Tenstorrent Announces a $1.5B Series E at a $6.2B valuation

https://tenstorrent.com/en/newsroom/tenstorrent-announces-series-e
1•pella•7m ago•0 comments

Advanced coding in low-resource programming languages

https://openai.com/index/low-resource-programming-languages/
1•sumnole•7m ago•0 comments

Safari: Blocking Identity Resolution Infrastructure

https://webkit.org/blog/18438/blocking-identity-resolution-infrastructure/
2•robflaherty•8m ago•0 comments

XPS 16 Creator Edition Laptop

https://www.dell.com/en-us/shop/laptop-computers/spd/xps16dx16263
1•mudil•8m ago•0 comments

AI that was supposed to save us time is doing just the opposite

https://www.theguardian.com/commentisfree/2026/oct/20/ai-supposed-to-save-time-opposite-governmen...
2•cybermango•9m ago•0 comments

Legendary Revives Lionsgate Takeover Talks, Submits Offer

https://www.bloomberg.com/news/articles/2026-10-20/legendary-revives-lionsgate-takeover-talks-sub...
1•jaredwiener•9m ago•0 comments

Qualcomm to cut jobs worldwide in performance-focused layoffs

https://www.cnbc.com/2026/10/20/qualcomm-performance-focused-layoffs-reuters.html
3•jimt1234•10m ago•0 comments

TriggerAPI – A native API client written in Go with full support for MCP servers

https://github.com/nomad-software/triggerapi
1•kalekold•10m ago•0 comments

Damage Control

https://fireborn.mataroa.blog/blog/damage-control/
1•devinprater•13m ago•0 comments

Reducing Reward Hacking by Localizing Bad Behavior Instead of Penalizing It

https://alignment.anthropic.com/2026/graft/
2•medbar•14m ago•0 comments

Do Markets Dream of Artificial Intelligence? (DNB Working Paper)

https://www.dnb.nl/en/publications/research-publications/working-paper-2026/871-do-markets-dream-...
2•latentframe•14m ago•0 comments

Hooked on YouTube

https://www.nbcnews.com/specials/hooked-youtube-videos-schools-junk-infiltrating-classrooms-google/
2•hollerith•14m ago•0 comments

Show HN: Frink – Desktop-first app for multi-step workflows and parallel agents

https://github.com/benord-labs/frink
1•norvalbv•16m ago•0 comments

Google support pages start defaulting to AI chatbots

https://9to5google.com/2026/10/19/google-support-ai-summary-chatbot-update/
1•tech234a•18m ago•0 comments

Michael Rabin's fingerprints across the theory of computation

https://eccc.weizmann.ac.il/report/2026/259/
1•matt_d•19m ago•0 comments

Can a Million AI Agents Create Superintelligence?

https://www.noahpinion.blog/p/can-a-million-ai-agents-create-superintelligence
3•speckx•22m ago•0 comments

Summonos: An omarchy-inspired macOS environment

https://github.com/RohiRIK/SummonOS
1•RohiRik•24m ago•0 comments

Deriving Efficient Hardware in the Bluespec Style

https://stng.substack.com/p/deriving-efficient-hardware-in-the
1•matt_d•25m ago•0 comments

What Shall I Teach My Son?

https://stevekrouse.com/ends
13•Curiositry•25m ago•4 comments

Redux, docs, and career advice with Mark Erikson

https://www.youtube.com/watch?v=oKFAFAU50sA
1•jdauriemma•26m ago•0 comments

My coding agent deleted a project without asking. The audit log says I did it

https://zabta.ai/blog/my-coding-agent-deleted-a-project
3•Regzaar•27m ago•2 comments