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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!

Docker Hub Is Down

https://www.dockerstatus.com
1•mopatches•2m ago•0 comments

Omarchy M is bringing Omarchy to Apple Silicon

https://omarchy.org/news/2026/10/namespace-joins-as-a-distinguished-corporate-patron/
1•stikit•6m ago•0 comments

LiveClaude – keep Claude/Cursor remote sessions alive across reboot

https://github.com/LeandroCannizzaro/LiveClaude
1•livEApplication•6m ago•0 comments

Customer Solutions Engineer

https://torre.ai/post/ed89YKNr-agave-customer-solutions-engineer
1•CathereneNganga•11m ago•0 comments

Teams too busy doing their job to experiment with AI are going to be replaced

https://ghuntley.com/replaced/
2•ai_critic•12m ago•1 comments

Show HN: HN Jev Sorter – classify HN comments in real time

https://github.com/ritza-co/hn-jev-sorter
1•sixhobbits•14m ago•0 comments

Radxa's Q8B has 2x the performance and expansion of the Pi 5

https://www.jeffgeerling.com/blog/2026/radxa-q8b-double-pi-5/
1•ingve•15m ago•0 comments

Show HN: Babytalk: Offline speech to text and text to speech on ESP32

https://github.com/tlack/babytalk
2•tlack•18m ago•1 comments

DIRU: Dendrite-inspired recurrent units for learning chaotic dynamics

https://link.springer.com/article/10.1007/s00521-026-12526-w
1•giorgiodidio•20m ago•0 comments

Geely confirms Canada entry with first cars in 2027 – but no models yet

https://electrek.co/2026/10/09/geely-auto-canada-entry-2027/
2•cisc•26m ago•0 comments

Kaspar – C++20 HFT trading system and order book simulator

https://github.com/vincent212/kaspar-hft
1•vincent212•26m ago•0 comments

Show HN: SpecWeave 3 – hand off a coding task across Claude Code, Codex and Grok

https://github.com/anton-abyzov/specweave
2•aabyzov•26m ago•0 comments

OpenAI mistranslated mathematics into code for its Navier-Stokes proof

https://www.newscientist.com/article/2592824-openai-mistranslated-mathematics-into-code-for-its-n...
3•danielmorozoff•27m ago•0 comments

Claude Design is moving to Artifacts in the Claude app

https://support.claude.com/en/articles/17440474-migrate-from-standalone-claude-design-to-claude
3•reinhash•32m ago•0 comments

Tesla drops 'Full Self-Driving' name in Europe after Germany pushback

https://electrek.co/2026/10/09/tesla-fsd-renamed-tesla-assisted-driving-europe/
4•cisc•32m ago•1 comments

What's New in Python 3.15

https://docs.python.org/3/whatsnew/3.15.html
4•kylebarron•33m ago•1 comments

Jeventus: A Jev Powered Slack Pet

https://twitter.com/thepericulum/status/2108649129798701363
3•jljljl•34m ago•1 comments

A model that can play chess well and explain its moves

https://twitter.com/AdithyaNLP/status/2107123924828049691
3•dash2•37m ago•0 comments

Our Elements: My questions and answers about the periodic table

https://vester.si/our-elements/
3•vesterde•38m ago•1 comments

Autonomous AI Lamp

https://www.autonomous.ai/lamp
2•handfuloflight•41m ago•0 comments

I tested 20 memecoin trading strategies on 43.6M trades. All 20 died

https://dead-signals.onrender.com/
2•aurryx•42m ago•0 comments

Don't Make Me Use Your Harness

https://jrdsgl.com/dont-make-me-use-your-harness/
4•hnaccount93•43m ago•0 comments

YouTuber Says Cops Visited Him After He Built a Flock-Style Camera to Track Cops

https://gizmodo.com/youtuber-says-cops-paid-him-a-visit-after-he-built-flock-style-camera-to-trac...
121•gumby•45m ago•47 comments

What Is Happening to Bitwarden

https://www.reddit.com/r/Bitwarden/s/HgbRQrqU7u
3•wapasta•45m ago•1 comments

Mass Driver: Solar system routing mini-game

https://mass-driver.scottyah.com
2•scottyah•46m ago•1 comments

Tanker attacks in Strait of Hormuz surge to wartime high, Iran tries choking oil

https://www.cnbc.com/2026/10/09/iran-war-strait-hormuz-tanker-attack-oil.html
5•MilnerRoute•49m ago•0 comments

AI companies plot "the day after"

https://www.axios.com/2026/10/09/ai-companies-day-after-major-attack
2•jna_sh•54m ago•1 comments

MultiClaude, run several Claude desktop accounts side by side on a Mac

https://github.com/QuentinCar0n/multiclaude
2•quentincaron0•56m ago•0 comments

The argument to disagregate Kubernetes makes a lot of sense

https://edera.dev/stories/disaggregated-kubernetes-contain-the-blast-radius
1•ivytheaxolotl•56m ago•0 comments

Ecosia switches from Mistral to open-weight AI models including Qwen, GLM, Kimi

https://technode.com/2026/10/09/ecosia-switches-from-mistral-to-open-weight-ai-models-including-q...
4•yogthos•56m ago•2 comments