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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!

Overview of Code Virtualization

https://tmpout.sh/5/12.html
1•vismit2000•1m ago•0 comments

Elon Musk Unmasked in Alex Gibney Documentary

https://www.hollywoodreporter.com/movies/movie-features/elon-musk-alex-gibney-documentary-1236686...
2•archagon•7m ago•0 comments

Therapeutic Food (Child Malnutrition)

https://en.wikipedia.org/wiki/Therapeutic_food
1•RetroTechie•8m ago•0 comments

Interactive Tree of Life

https://ptree.org/
4•Lucent•11m ago•1 comments

The Most Famous "Odyssey" Translation Is Inaccurate

https://substack.magazinenongrata.com/p/the-most-popular-odyssey-translation
1•georgex7•14m ago•0 comments

Green Card wait for most Indian immigrants is now 179 years

https://nypost.com/2026/09/03/us-news/green-card-wait-for-most-indian-immigrants-is-now-179-years...
3•pseudolus•14m ago•0 comments

Ask HN: Code review of AI output, review what?

3•s3arch•15m ago•1 comments

2FAS – Authenticator and Password Manager

https://2fas.com/
1•thunderbong•17m ago•0 comments

Jensen Huang Became AI'S Taylor Swift

https://www.economist.com/interactive/1843/2026/09/03/how-jensen-huang-became-ais-taylor-swift
1•andsoitis•17m ago•0 comments

NVIDIA is driving the AI boom. Good

https://www.economist.com/leaders/2026/09/03/nvidia-is-driving-the-ai-boom-good
3•andsoitis•19m ago•0 comments

Adobe names insider Chakravarthy CEO, Narayen transitions to executive chair

https://www.reuters.com/business/adobe-names-anil-chakravarthy-ceo-2026-09-03/
1•pfrrp•21m ago•0 comments

Tesla is asking people if they want to buy and run Cybercab fleets

https://techcrunch.com/2026/09/03/tesla-is-asking-people-if-they-want-to-buy-and-run-cybercab-fle...
2•evo_9•22m ago•0 comments

Botpool Create – Build websites and apps by chatting with AI

https://www.botpool.ai/create
1•leuften•32m ago•1 comments

SimpleUI for KOReader

https://github.com/doctorhetfield-cmd/simpleui.koplugin
1•juiceland•38m ago•0 comments

Release 13.2.1 · Grafana/Grafana

https://github.com/grafana/grafana/releases/tag/v13.2.1
1•kyisaiah47•41m ago•0 comments

PayPal plans to lay off workers at its South Bay headquarters

https://www.sfchronicle.com/tech/article/paypal-san-jose-layoffs-tech-jobs-22416617.php
3•littlexsparkee•45m ago•0 comments

Ask HN: What is the ideal email domain setup?

2•bix6•47m ago•1 comments

Your website analytics deserves Love

https://anacraft.dev/#mcp
1•mehfuzh•50m ago•1 comments

Not Cool

https://placesjournal.org/article/not-cool-paris-heatwave-climate-sustainability/
2•littlexsparkee•57m ago•0 comments

Pangram Has Emerged as the Gold Standard of AI Detection. Should You Trust It?

https://www.wired.com/story/pangram-has-emerged-as-the-gold-standard-of-ai-detection/
3•bko•1h ago•1 comments

Mammut vs. Arc'terx – Brand Comparisons

https://www.lydiascapes.com/mammut-vs-arcteryx-brand-comparison/
1•Cider9986•1h ago•0 comments

Simple Is Not Small

https://jyn.dev/simple-is-not-the-same-as-small/
1•zdw•1h ago•0 comments

Navigating Code Reviews as a Code Author [video]

https://www.youtube.com/watch?v=zygtgvHp_MM
1•BiraIgnacio•1h ago•0 comments

Stop obsessing about the goddamn robot

https://despairlabs.com/blog/posts/2026-09-03-stop-obsessing-about-the-robot/
3•zdw•1h ago•0 comments

Tell HN: The Thoughts and Woes of a Full-Time Founder Part 1

3•lcampbellsoup•1h ago•0 comments

Ant Group open-sources LingBot-Vision for dense spatial perception

https://github.com/Robbyant/lingbot-vision
1•fourfire•1h ago•0 comments

Balance of Power Geopolitics in the Nuclear Age (1985)

https://archive.org/details/msdos_Balance_of_Power_1985
1•Levitating•1h ago•0 comments

The Death of Educational Content on YouTube [video]

https://www.youtube.com/watch?v=-Gnrp_caPvo
5•jahnu•1h ago•0 comments

Microsoft to impose time limits on Xbox cloud gaming subscribers

https://www.cnbc.com/2026/09/03/microsoft-xbox-game-pass-cloud-limits.html
2•bluedino•1h ago•0 comments

Hugging Face is too important to fall into Nvidia's hands

https://www.theregister.com/ai-and-ml/2026/09/03/hugging-face-is-too-important-to-fall-into-nvidi...
6•mdp2021•1h ago•3 comments