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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•1y 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!

A Pig, the State, and War: Porco Rosso (Kurenai No Buta) (2014)

https://journal.animationstudies.org/article/id/66/
2•simonebrunozzi•1m ago•0 comments

Buildings full of machines are tied to modest local job growth

https://theconversation.com/we-studied-1-584-data-centers-and-found-the-buildings-full-of-machine...
2•andrewstetsenko•1m ago•0 comments

Much Ado About None: Sentinel Values in Python

https://florianwilhelm.info/2026/10/sentinel_values/
2•sebg•3m ago•0 comments

Show HN: Charter, field-level control over agents' calls into customer accounts

https://github.com/r28ai/charter
2•nathanqueme•4m ago•0 comments

Google value plunges by $500B as AI fears rattle Wall Street

https://www.bbc.com/news/articles/cm9qzdqpxy48o
2•dabinat•5m ago•0 comments

Intel stock plunges after posting disappointing Q4 outlook

https://finance.yahoo.com/video/intel-stock-plunges-after-posting-disappointing-q4-outlook-200731...
2•baal80spam•6m ago•1 comments

Chinese Universities in Jiangsu Begin Paying Staff in Digital Yuan

https://chinascope.org/archives/41502
2•gscott•8m ago•0 comments

Biltong.ai

https://biltong.ai/
2•almogo•10m ago•0 comments

The Great American Rascal: Tom Sawyer at 150

https://claremontreviewofbooks.com/the-great-american-rascal/
3•beatstop•13m ago•0 comments

Our estimate for factoring RSA-2048 with cat qubits: pushing the frontier

https://alice-bob.com/blog/our-estimate-for-factoring-rsa-2048-with-cat-qubits-pushing-the-fronti...
3•wrayjustin•14m ago•0 comments

Should a medical diagnosis reshape the past? (2025)

https://chengela.substack.com/p/should-a-medical-diagnosis-reshape
3•wyndham•15m ago•0 comments

Zen Bonsais

https://www.zen.com.ar/bonsais/
2•elandros•15m ago•0 comments

Lighthouses, War and a Puffling

https://adcochrane.wordpress.com/2026/10/29/lighthouses-war-and-a-puffling-the-isle-of-may/
3•aways•17m ago•0 comments

Terraform: Cheapest Solar in North America at $0.016/KWh

https://terraformindustries.wordpress.com/2026/10/27/how-terraform-built-the-cheapest-solar-in-no...
2•pfdietz•17m ago•0 comments

Nanbeige4.3-33B – Flagship teacher LLM

https://huggingface.co/Nanbeige/Nanbeige4.3-33B
2•Retro_Dev•19m ago•0 comments

Experiments with Google

https://experiments.withgoogle.com/
2•swatson741•19m ago•0 comments

Rhyme-as-Reason Effect

https://en.wikipedia.org/wiki/Rhyme-as-reason_effect
1•epestr•23m ago•0 comments

Show HN: InputConfig, a free open-source app to run your Mac with any controller

https://github.com/ryleighnewman/InputConfig
1•ryleighnewman•25m ago•0 comments

"Peak Greenwashing": Two Bills in Congress Endorse Misleading Recycling Claims

https://www.propublica.org/article/plastics-industry-recycling-legislation-congress
1•hn_acker•27m ago•0 comments

Rockstar is a programming language based on 1980s hard rock lyrics

https://codewithrockstar.com/
1•mooreds•27m ago•0 comments

Utah files criminal charges against Kalshi and its founders under gambling laws

https://www.sltrib.com/news/2026/10/28/utah-files-14-criminal-charges/
2•JumpCrisscross•28m ago•1 comments

Tech Tips for Parents This Digital Parenting Week

https://www.eff.org/deeplinks/2026/10/tech-tips-parents-digital-parenting-week
1•hn_acker•29m ago•0 comments

Patrick Stewart, legendary actor of 'Star Trek' and 'X-Men' fame, dies at 86

https://apnews.com/article/patrick-stewart-dies-8b38054ff74d4187a32158d78e345ad7
2•Bluestein•29m ago•1 comments

Cybernetic Interventions

https://cxix.tiiny.site/
1•shaunxcode•29m ago•0 comments

Building an AI-native engineering org

https://twitter.com/sgondala2/status/2115832070274723875
1•sgondala_ycapp•29m ago•0 comments

The neocloud shakeout is coming, and even the neoclouds seem to know it

https://fortune.com/2026/10/29/elon-musk-neoclouds-ai-bubble-coreweave-nebius-consolidation/
1•angry_impala•29m ago•0 comments

Homosexuality and Psychology

https://en.wikipedia.org/wiki/Homosexuality_and_psychology
1•chistev•31m ago•0 comments

Hunting 'Zombie Accounts' in Active Directory

https://www.fabian.fyi/2026/10/zombie-hunt.html
1•optimiz•31m ago•0 comments

The Streisand Effect Case Might Have Played Out Differently in Germany

https://www.techdirt.com/2026/10/29/the-streisand-effect-case-might-have-played-out-differently-i...
2•hn_acker•32m ago•1 comments

The Illusion of Thinking: Models Don't Actually Reason

https://arxiv.org/abs/2506.06941
2•CGMthrowaway•32m ago•1 comments