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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•9mo 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!

VCL App: 4x to 11x Faster Math Performance with Elements

https://blogs.remobjects.com/2026/02/09/your-vcl-app-faster-4x-to-11x-math-performance/
1•vintagedave•1m ago•0 comments

Learnings from Creating a GUI Library

https://blog.s-schoener.com/2026-02-09-gui/
1•todsacerdoti•1m ago•0 comments

The Joy of Programming

https://deanclatworthy.com/2026/02/09/the-joy-of-programming/
2•deanc•1m ago•0 comments

AI Doesn't Reduce Work–It Intensifies It

https://hbr.org/2026/02/ai-doesnt-reduce-work-it-intensifies-it
1•swolpers•1m ago•0 comments

BMW's Newest "Innovation" Is a Logo-Shaped Middle Finger to Right to Repair

https://fr.ifixit.com/News/115528/bmws-newest-innovation-is-a-logo-shaped-middle-finger-to-right-...
1•Kyro38•1m ago•0 comments

Discord Launches Teen-by-Default Settings Globally

https://discord.com/press-releases/discord-launches-teen-by-default-settings-globally
1•dm•2m ago•0 comments

Why does prompt injection work

https://www.kaggle.com/discussions/general/672622
1•cllxcll•3m ago•0 comments

What Drives Managers to Sabotage Talented Employees (2025)

https://www.library.hbs.edu/working-knowledge/what-drives-managers-to-sabotage-talented-employees
1•begueradj•3m ago•0 comments

Ask HN: My 2nd ever Quant Finance and ML Newsletter. Help me improve

https://static.philippdubach.com/newsletter/newsletter-2026-02.html
1•7777777phil•4m ago•0 comments

AI does not have human-level intelligence

http://edwardfeser.blogspot.com/2026/02/no-ai-does-not-have-human-level.html
1•danielam•4m ago•0 comments

When management mantras help–and when they hurt

https://www.economist.com/business/2026/02/05/when-management-mantras-help-and-when-they-hurt
1•andsoitis•4m ago•0 comments

What AI could mean for film and TV production and the industry's future

https://www.mckinsey.com/industries/technology-media-and-telecommunications/our-insights/what-ai-...
1•atlasunshrugged•5m ago•0 comments

Every Quote Speakerlabeled

https://poddley.com/?searchParams=matchAll=true%26multiMatchForSameEpisodeOrPodcast=true%26person...
2•onesandofgrain•5m ago•1 comments

Shadow: Simultaneous Multi-Threading Architecture with Asymmetric Threads

https://danglingpointers.substack.com/p/shadow-simultaneous-multi-threading
1•blakepelton•6m ago•0 comments

AI Is About to Transform the Video Industry (In a Scary Way)

https://www.youtube.com/watch?v=SY5Wm7fUJFE
1•gslin•6m ago•0 comments

Never name a new species of an existing dinosaur genus

https://svpow.com/2026/01/16/never-name-a-new-species-of-an-existing-dinosaur-genus/
2•surprisetalk•6m ago•0 comments

Do Metaprojects

https://taylor.town/wealth-001
1•surprisetalk•6m ago•0 comments

Pick Practical Principles (2022)

https://taylor.town/pick-practical-principles
1•surprisetalk•6m ago•0 comments

Ruby Newbie Is Joining the Ruby Users Forum

https://www.rubyforum.org/tag/getting-started
1•jvrc•6m ago•1 comments

Show HN: Tangs.dev – Upload → Save to Drive → Share with Friends

https://tangs.dev
1•woodgh•6m ago•0 comments

OozyJoy: The Erotic Game Guidebook

https://www.oozyjoy.org
1•syr3fx•7m ago•0 comments

Problem Matchers in GitHub Actions

https://yossarian.net/til/post/problem-matchers-in-github-actions/
1•ahamez•8m ago•0 comments

Leeds-led study shows potential of terahertz frequencies for high-speed coms

https://eps.leeds.ac.uk/faculty-engineering-physical-sciences/news/article/6157/leeds-led-study-s...
1•JeanKage•8m ago•0 comments

Discord will require a face scan or ID for full access next month

https://www.theverge.com/tech/875309/discord-age-verification-global-roll-out
20•x01•8m ago•9 comments

What a "software factory" teaches us about staying human

https://codeforcreatives.com/blog/what-a-software-factory-can-teach-creatives-about-working-with-ai/
1•alexdobrenko•9m ago•0 comments

How you build award-level sites in 2026

https://twitter.com/LeDonTizi/status/2020867680610189568
1•elyesrayane•9m ago•0 comments

Step Aside, Phone

https://manuelmoreale.com/thoughts/step-aside-phone
1•speckx•9m ago•0 comments

Why is DuckDuckGo worse than Bing?

https://lapcatsoftware.com/articles/2026/2/3.html
1•frizlab•10m ago•1 comments

Long-Sought Proof Tames Some of Math's Unruliest Equations

https://www.quantamagazine.org/long-sought-proof-tames-some-of-maths-unruliest-equations-20260206/
3•ibobev•10m ago•0 comments

Print&Go's Plan to Become the DRM of 3D Printing

https://blog.adafruit.com/2026/02/08/any-user-who-has-a-3d-printer-would-have-this-software-insta...
1•kortex•10m ago•1 comments