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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•7mo 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!

The Year in Computer Science

https://www.quantamagazine.org/the-year-in-computer-science-20251216/
1•pykello•17s ago•0 comments

Critic: Code Inspection System in Opera Software (2019?)

https://sudonull.com/post/135595
1•todsacerdoti•43s ago•0 comments

Show HN: Code webapps like it is 2010 – with agents & modern tech. A starter

https://github.com/tom-010/boring-stack
1•tom010•1m ago•0 comments

Cursed Bundler: Using go get to install Ruby Gems

https://nesbitt.io/2025/12/25/cursed-bundler-using-go-get-to-install-ruby-gems.html
1•SPBS•5m ago•0 comments

My Journey to a NixOS Router

https://chrisdell.info/my-journey-to-a-nixos-router/
1•cjdell•5m ago•0 comments

Schleps All the Way Down

https://www.saeedreza.com/notes/schleps-all-the-way-down
1•srabeat•11m ago•0 comments

Show HN: SVT – A fast terminal image viewer with sxiv-like keybindings

https://github.com/kan-bayashi/svt
1•kan-bayashi•11m ago•0 comments

Update on my journey toward the Rust compiler team

https://old.reddit.com/r/rust/comments/1pw5i9y/4_months_later_update_on_my_journey_toward_the/
1•nhatcher•13m ago•1 comments

Google is letting users swap out Gmail addresses without losing their data

https://www.latimes.com/business/story/2025-12-26/google-will-let-users-swap-out-gmail-addresses-...
2•not4uffin•15m ago•0 comments

NyroDB – Universal rust database engine, model based, fast

https://github.com/TheRemyyy/nyro-db
1•TheRemyyy•16m ago•1 comments

Tourism Crisis Hits the United States in 2025 as International Visitor Plunge

https://www.travelandtourworld.com/news/article/tourism-crisis-hits-the-united-states-in-2025-as-...
3•mindracer•19m ago•0 comments

You can't design software you don't work on

https://www.seangoedecke.com/you-cant-design-software-you-dont-work-on/
1•todsacerdoti•20m ago•0 comments

What condition one in Antarctica looks like [video]

https://www.youtube.com/shorts/Cq7GB1vp5dw
2•keepamovin•20m ago•0 comments

Aged care centre confronts racism with cultural celebrations

https://www.abc.net.au/news/2025-12-25/aged-care-centre-starts-cultural-celebrations-to-address-r...
1•Tomte•21m ago•0 comments

Claude Code Auto Improve

https://github.com/Polandia94/auto-improvement
2•polandia94•24m ago•1 comments

Hanuman Chalisa English

https://hanuman-chalisa-bhajan.blogspot.com/2010/01/shri-hanuman-chalisa-english.html
1•janebush08•29m ago•0 comments

Rilmenidine extends lifespan and healthspan in Caenorhabditis elegans

https://onlinelibrary.wiley.com/doi/10.1111/acel.13774
2•manidoraisamy•35m ago•0 comments

Show HN: Stripe default config often bypasses AVS

https://ghostaudit.io/
3•fitzz•36m ago•1 comments

Arcan 0.7.1 – Minutes to Midnight

https://arcan-fe.com/2025/12/27/arcan-0-7-1-minutes-to-midnight/
1•todsacerdoti•36m ago•0 comments

Show HN: Learn how to make your first open source pull request on GitHub

https://github.com/firstcontributions/first-contributions
3•sudo_bangbang•37m ago•0 comments

How to Get a Scholarship Without Ielts or Toefl (International Students)

https://grantjobsandscholarship.blogspot.com/2025/12/how-to-get-scholarship-without-ielts-or.html
1•frankchidera900•38m ago•0 comments

Ask HN: What's your health/fitness/wellness routine?

1•akhilnchauhan•41m ago•1 comments

Reasoning tools knowledgebase of thinking patterns from various domains

https://github.com/dvdarkin/reasoning-tools
1•dvdarkin•43m ago•1 comments

Show HN: Snapalabra – A daily exercise for learning new vocabulary

2•detectivestory•45m ago•1 comments

Dev-db: TypeScript-first mock database generator with realistic data in seconds

https://github.com/calvin-kimani/dev-db
1•kimanicalvin•46m ago•0 comments

Show HN: An AI pipeline to find anomalies in FDA medical device reports

https://maude-analysis.onrender.com/
2•smugesh•48m ago•0 comments

Show HN: AgentCmds – A directory of slash commands for AI agents

https://agentcmds.work/
2•ho_ba•56m ago•1 comments

Progressive disclosure is essential as AI capabilities grow, so does complexity

https://1984.design/psychology-of-design/progressive-disclosure/
1•kaizenb•56m ago•0 comments

GNU Taler v1.3 Released

https://www.taler.net/en/news/2025-13.html
7•midzer•58m ago•0 comments

My web framework is 1 py file, my CRM is 1 shell script, SQLite the 1 dependency

https://github.com/danielfalbo/prev.py/blob/main/prev.py
1•danielfalbo•59m ago•0 comments