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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!

Show HN: A 3D dashboard for OpenClaw agents, their tool calls in real time

https://github.com/talhaorak/divan
1•talhao•1m ago•0 comments

Show HN: Bosun – Supervising Agentic Fleet Manager (Open Source)

http://bosun.virtengine.com/
1•jaeko44•3m ago•0 comments

Show HN: Axon – Safely run claude --dangerously-skip-permissions on Kubernetes

https://github.com/axon-core/axon
1•gjkim042•3m ago•0 comments

Show HN: What the EU parliament and commission have been working on lately

https://euforya.eu/goals?ff_commission=true
1•krzysiek•3m ago•0 comments

The Psychology of Bad Code Part 3 – Vibe Coding

https://shehackspurple.ca/2026/02/16/the-psychology-of-bad-code-part-3-vibe-coding/
1•shehackspurple•7m ago•1 comments

Ask HN: How to require confirmation for git reset in Cursor after recent update?

1•theorchid•7m ago•0 comments

Silicon Valley Is Hoarding Technical PhDs

https://homeeconomics.substack.com/p/silicon-valley-is-hoarding-technical
1•aziz_sunderji•7m ago•1 comments

A relationship between the Collatz conjecture and the Fibonacci numbers

https://vincentrolfs.dev/blog/collatz
1•amichail•8m ago•0 comments

My Excellent Conversation with Joe Studwell

https://marginalrevolution.com/marginalrevolution/2026/02/my-excellent-conversation-with-joe-stud...
2•paulpauper•8m ago•0 comments

Show HN: Zest – A single-container recipe manager built without front end tools

https://github.com/MartinSantosT/myzest
1•martin-mast1974•8m ago•1 comments

Plop – A lightweight generator framework for repeatable codebase patterns

https://plopjs.com
2•h4ch1•8m ago•1 comments

Record Low Crime Rates Are Real, Not Reporting Bias or Improved Medical Care

https://www.astralcodexten.com/p/record-low-crime-rates-are-real-not
1•paulpauper•8m ago•0 comments

Computer Science as Infrastructure: The Spine of the Lean CSLib

https://arxiv.org/abs/2602.15078
2•matt_d•9m ago•0 comments

SBCL's official policy on LLM-assisted contributions

https://sourceforge.net/p/sbcl/mailman/message/59298416/
1•djha-skin•11m ago•0 comments

Vibe Password Generation: Predictable by Design

https://www.irregular.com/publications/vibe-password-generation
2•pmontra•15m ago•0 comments

Globally released my macOS full PDF editor

https://apps.apple.com/us/app/mypdf-offline-scanner-edit/id6751173174
2•mateid•15m ago•0 comments

Measurement of a lithium plume from the uncontrolled re-entry of Falcon 9 rocket

https://www.nature.com/articles/s43247-025-03154-8
3•smartmic•16m ago•0 comments

Claude just gave me access to another user's legal documents

https://old.reddit.com/r/ClaudeAI/comments/1r97osm/claude_just_gave_me_access_to_another_users_le...
8•markhaslam•18m ago•1 comments

"Laser writing in glass for dense, fast and efficient archival data storage"

https://www.nature.com/articles/s41586-025-10042-w
1•GlibMonkeyDeath•18m ago•1 comments

OpenClaw is the most fun I've had with a computer in 50 years

https://www.theregister.com/2026/02/19/50_years_using_computers/
3•TMWNN•19m ago•0 comments

Guestbooks: The cozy 90s web fad which shaped the future [video]

https://www.youtube.com/watch?v=ZSBYO1BYrDM
1•1659447091•20m ago•0 comments

Recycling waste via insect agriculture: Frass impacts on soil and plant health

https://acsess.onlinelibrary.wiley.com/doi/10.1002/jeq2.70089
2•PaulHoule•21m ago•0 comments

Reconstructing Biscuit in Clojure

https://serefayar.substack.com/p/reconstructing-biscuit-in-clojure
2•serefayar•23m ago•0 comments

Gentoo dumps GitHub over Copilot nagware

https://www.theregister.com/2026/02/17/gentoo_dumps_github_for_codeberg_over_copilot_nagware/
2•cratermoon•23m ago•0 comments

Show HN: oMLX – Native Mac inference server that persists KV cache to SSD

https://github.com/jundot/omlx
1•jundot•24m ago•0 comments

Single vaccine could protect against all coughs, colds and flus

https://www.bbc.com/news/articles/cx2g8rz7yedo
16•dabinat•25m ago•1 comments

Show HN:PolyMCP Python Tools with Autonomous Agents

1•justvugg•26m ago•0 comments

Minnesota judge holds federal attorney in civil contempt

https://www.cnn.com/2026/02/19/politics/trump-attorney-contempt-minnesota-immigration
10•rawgabbit•26m ago•0 comments

The Observatory of Anonymity

https://www.ooa.world/
2•Betelbuddy•26m ago•0 comments

A Terminator Ending for Google Privacy Sandbox?

https://blog.zgp.org/terminator-ending-for-privacy-sandbox/
1•janandonly•27m ago•0 comments