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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•10mo 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!

Marc Andreesen says he has a zero-introspection mindset

https://www.fastcompany.com/91510739/why-marc-andreessens-zero-introspection-approach-will-get-yo...
1•loteck•2m ago•1 comments

Your Frustration Is the Product

https://daringfireball.net/2026/03/your_frustration_is_the_product
1•celias•4m ago•0 comments

Silicon Valley Bet on War. The Bets Are Paying Off

https://www.nytimes.com/2026/03/18/technology/silicon-valley-war-defense-tech.html
1•bookofjoe•4m ago•1 comments

The Compleat Strategist King of Prussia Store to Close on April 25, 2026

https://www.thecompleatstrategist.com/blogs/compleat-strategic-updates/the-compleat-strategist-ki...
1•jdkee•5m ago•0 comments

Maiao: Easy, Gerrit-style, stacked diffs workflow for GitHub

https://github.com/adevinta/maiao
1•PaulHoule•9m ago•0 comments

White House orders restart of California coastal oil drilling

https://www.latimes.com/california/story/2026-03-13/trump-administration-orders-restart-of-califo...
1•gmays•10m ago•0 comments

AI is the final frontier of Copyleft

https://www.maffulli.net/2026/03/16/ai-final-frontier-of-copyleft/
1•killme2008•10m ago•0 comments

ColorPageLab (printable coloring pages at 300 DPI, no account needed)

https://colorpagelab.com
1•prmishania•14m ago•0 comments

How/why did AMD/ATI fall behind Nvidia? (2015)

https://forums.anandtech.com/threads/how-why-did-amd-ati-fall-behind-nvidia.2434913/
1•stmw•15m ago•1 comments

Books of the Century by Le Monde

https://standardebooks.org/collections/le-mondes-100-books-of-the-century
1•zlu•15m ago•0 comments

South Korea's SDT opens Quantum-AI data center

https://www.datacenterdynamics.com/en/news/south-koreas-sdt-opens-quantum-ai-data-center-deploys-...
1•djinn•15m ago•0 comments

Check mates: Analysis of medieval chess shows vision of equality, mutual respect

https://www.theguardian.com/world/2026/mar/19/medieval-chess-set-equality-respect
2•defrost•16m ago•0 comments

My AI Bot Is Smarter Than Your Honor Roll Student

https://botonomous.ai/post/my-ai-bot-is-smarter-than-your-honor-roll-student-da1e82ea
2•botonomous•16m ago•0 comments

South Korean Police Accidentally Post Cryptocurrency Wallet Password

https://www.schneier.com/blog/archives/2026/03/south-korean-police-accidentally-post-cryptocurren...
1•djinn•17m ago•1 comments

Unplug ICE

https://unplugice.org/
2•doener•22m ago•0 comments

Raspberry Pi Projects That Anyone Can Do

https://www.ifixit.com/News/116276/raspberry-pi-projects-that-anyone-can-do
2•gnabgib•22m ago•0 comments

Ask HN: How do you walk away from a project you care about?

1•rtaylorgarlock•22m ago•0 comments

What about Karpathy Loop?

https://thenewstack.io/karpathy-autonomous-experiment-loop/
2•djinn•24m ago•0 comments

The Flawed Ephemeral Software Hypothesis

https://www.blackhc.net/essays/future_of_software/
1•handfuloflight•24m ago•0 comments

Show HN: Lottery of Birth

https://claude.ai/public/artifacts/b561334a-3b08-41e8-b0e0-c656bdb2e30b
1•atulvi•29m ago•0 comments

Show HN: I created a free tool to analysis your old blog posts for suggestions

https://kitful.ai/write-tools/content-refresh-tool
1•eashish93•29m ago•0 comments

MCP-indexed retrieval vs. file search on a 393-note vault (90 runs)

https://neurostack.sh/blog/vanilla-vs-neurostack-393-notes
2•raphasouthall•29m ago•0 comments

Violations of LLM Review Policies

https://blog.icml.cc/2026/03/18/on-violations-of-llm-review-policies/
1•e08e99f99•30m ago•0 comments

World’s Largest LNG Plant Suffers Extensive Damage, Qatar Says

https://www.bloomberg.com/news/articles/2026-03-18/qatar-reports-extensive-damage-at-site-of-ras-...
2•geox•31m ago•0 comments

Hittler faces Zielinski as French town's election contest goes viral

https://www.bbc.com/news/articles/c2d1drzgxzyo
1•0in•31m ago•0 comments

Autoresearch for SAT Solvers

https://github.com/iliazintchenko/agent-sat
2•chaisan•33m ago•0 comments

VistaVision is a cinematographic technique which uses a higher-resolution

https://en.wikipedia.org/wiki/VistaVision
1•doener•34m ago•0 comments

Searchable.City

https://searchable.city/
1•xnx•36m ago•2 comments

US financial regulator issues long-awaited cryptocurrency guidance

https://www.theguardian.com/technology/2026/mar/18/sec-cryptocurrencies-securities-rules
1•andsoitis•38m ago•0 comments

Scheduled: Open-Source Calendly, but AI

https://github.com/Fergana-Labs/scheduled
3•samzliu•40m ago•1 comments