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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•11mo 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 Epistemological Crisis of BCI: Addressing the Infohazard

https://www.reddit.com/r/BCI/s/cmFfu5yDmO
1•Edgemute•1m ago•0 comments

Batteries Included CLI Framework

1•maxalbarello•2m ago•0 comments

Meetings Are Forcing Functions

https://www.mooreds.com/wordpress/archives/3734
1•mooreds•3m ago•0 comments

Talk HN: Hackerchat

https://apps.apple.com/us/app/hc-chat-the-hackernews/id6760586283
1•enyars•3m ago•1 comments

GitHub leaking private repositories and access? [video]

https://www.youtube.com/watch?v=MupI-OgdZik
1•jmount•3m ago•0 comments

How to Attend the Altman vs. Musk Trial

1•major4x•4m ago•0 comments

ShadowStrike-Phantom Open-Source Endpoint Protection Platform

1•Soocile•4m ago•0 comments

Doctors and education experts call for a 5-year AI moratorium in schools

https://fortune.com/2026/04/16/doctors-experts-ai-moratorium-schools/
1•obscurette•4m ago•0 comments

Utah Medical Board urges immediate halt of Doctronic AI prescribing algorithm [pdf]

https://www.fsmb.org/siteassets/communications/doctronic-letter-from-medical-board.pdf
1•randycupertino•6m ago•0 comments

Yalda Hakim on the collapse of 'seeing is believing'

https://www.reuters.com/lifestyle/culture-current/yalda-hakim-collapse-seeing-is-believing-2026-0...
1•dredmorbius•7m ago•0 comments

North Carolina student fights accusation of AI use

https://www.govtech.com/education/k-12/north-carolina-student-fights-accusation-of-ai-use
1•anonymousab•8m ago•0 comments

Shipping the OpenClaw Stack in Public

https://agentbot.sh
1•Agentbot-esky•13m ago•0 comments

The Case for Fixing Everything

https://www.technologyreview.com/2026/04/17/1135408/book-review-stewart-brand-fixing-everything-m...
1•mooreds•13m ago•0 comments

Avoid Shipping Your Org Chart

https://chronicbuildfailure.co/how-to-avoid-shipping-your-org-chart-c086effe751c
1•moooo99•14m ago•0 comments

1gbps Tokenizer written in Assembly. 20x faster than HuggingFace

https://github.com/dogmaticdev/SIMD-Tokenizer
1•dogmaticdev•14m ago•1 comments

Ask HN: Cyberdecks are cool but do they serve a purpose?

2•hamiecod•15m ago•1 comments

AI created SE050 PCB for me and it works, damn (not an electrical engineer)

https://www.etsy.com/listing/4494477464/se050-secure-element-breakout-board
1•alen-z•20m ago•2 comments

RLM ♥ GEPA: You Can Use RLMs to Improve RLMs with GEPA

https://twitter.com/GabLesperance/status/2048072367876735415
1•glesperance•23m ago•0 comments

The AI Revolution: The Road to Superintelligence (2015)

https://waitbutwhy.com/2015/01/artificial-intelligence-revolution-1.html
1•simonebrunozzi•25m ago•0 comments

A graduating CS senior cannot afford the AI eating his career

https://pilgrimsage.substack.com/p/the-side-door
1•momentmaker•26m ago•0 comments

What led to the mess at Franklin Templeton India (2020)

https://www.moneycontrol.com/europe/?url=https://www.moneycontrol.com/news/business/personal-fina...
1•oumua_don17•29m ago•0 comments

Angelfire and Tripod, gone

https://menga.net/angelfire-and-tripod-gone
2•akyuu•30m ago•0 comments

It's OK to Use Agentic to Revive the Projects You Never Were Going to Finish

https://blog.matthewbrunelle.com/its-ok-to-use-coding-assistance-tools-to-revive-the-projects-you...
1•speckx•32m ago•0 comments

There are only four sensible ways to build a website

https://www.jonoalderson.com/conjecture/four-ways-to-build-a-website/
2•eustoria•32m ago•0 comments

Speculation Rules for Evil

https://www.jonoalderson.com/performance/speculation-rules-for-evil/
1•eustoria•32m ago•0 comments

The metallurgy and artisan secrets of making GOES for large power transformers

https://frontiermap.substack.com/p/the-us-imports-82-of-its-large-power
1•rob_lh•32m ago•0 comments

AI Agents for Business Analysis: A Working BA's Honest Take

https://bettersoftware.uk/2026/01/17/ai-agents-for-business-analysis/
1•lifeisstillgood•33m ago•1 comments

View Transitions Toolkit

https://chrome.dev/view-transitions-toolkit/
1•eustoria•33m ago•0 comments

A beginners guide to identifying propaganda

https://covertactionmagazine.com/2026/04/24/living-in-the-age-of-hyperbole-or-a-guide-to-identify...
2•thinkingemote•34m ago•0 comments

Ask HN: Do you read differently now that anything could be AI generated?

1•dwa3592•34m ago•0 comments