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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!

Tab Completion After Colon

https://so.nwalsh.com/2026/08/20-tab-completion
1•speckx•39s ago•0 comments

A quiet channel between ICE and Iran shaped deportation flights

https://apnews.com/article/iran-immigration-deportation-flights-emails-97554a7ab9d1f33ca00700434d...
1•toomanyrichies•1m ago•0 comments

We let $200 GPT-Pro Think for 7 days on unsolved math

https://www.youtube.com/watch?v=DBrmtjM1Mq4
1•dgellow•2m ago•0 comments

Our Servants Will Do That for Us

https://borretti.me/article/our-servants-will-do-that-for-us
2•ibobev•4m ago•0 comments

AI Alignment as a Thought-Terminating Cliche

https://borretti.me/article/ai-alignment-as-thought-terminating-cliche
2•ibobev•4m ago•0 comments

Fieldmade – RPG crafting by drawing pixel art and AI

https://chromagolem.itch.io/fieldmade
1•ChromaGolem•4m ago•1 comments

US debt tops $40T as Treasury doubles bond buybacks to calm markets

https://www.euronews.com/business/2026/08/20/us-debt-tops-40-trillion-as-treasury-doubles-bond-bu...
3•abdelhousni•4m ago•0 comments

Meta glasses are a workplace menace

https://www.theverge.com/report/982414/meta-glasses-work-surveillance-labor-security
3•hberg•4m ago•1 comments

Show HN: trailers.fm – live channel of movie trailers

https://trailers.fm/
1•dogancan•4m ago•0 comments

Spirit Flight Attendants Fight Google's Data Bid for AI

https://www.wsj.com/pro/bankruptcy/spirit-flight-attendants-fight-googles-data-bid-for-ai-e939e049
1•thm•6m ago•0 comments

Remembering the Apple II and IIGS from High School

https://www.goto10retro.com/p/remembering-the-apple-ii-and-iigs
1•ibobev•6m ago•0 comments

Golf Tours in One Place

https://golfhub.dev
1•lucaserla•6m ago•1 comments

Why '80s Music Sounds So Weirdly Synthetic (and the Gear That Did It)

https://comuniq.xyz/Music/post?t=1591
1•01-_-•6m ago•0 comments

NBA 2K27's new MyNBA Legacy mode sounds a lot like basketball Crusader Kings 3

https://www.rockpapershotgun.com/hold-the-throne-nba-2k27s-new-mynba-legacy-mode-sounds-a-lot-lik...
1•Tomte•7m ago•0 comments

The city of Cupertino is 70.9% Asian. A new TV show set there ignores this

https://www.sfgate.com/sf-culture/article/cupertino-tv-show-22395253.php
3•randycupertino•9m ago•0 comments

Stripe letter to investors: Founders say we're already in the Singularity [pdf]

https://s3.documentcloud.org/documents/28565866/stripes-august-2026-investor-letter.pdf
3•ryan_j_naughton•12m ago•0 comments

State probes nonprofit We Heart Seattle over drug cleanup operations

https://www.thecentersquare.com/washington/article_f6941a86-0498-4a3e-a042-898e1267610f.html
1•pudgywalsh•13m ago•0 comments

Paleocene–Eocene Thermal Maximum

https://en.wikipedia.org/wiki/Paleocene%E2%80%93Eocene_thermal_maximum
1•simonebrunozzi•13m ago•0 comments

Ask HN: Did I do the right thing using AI?

1•simondukr•13m ago•0 comments

Joint Statement from FR, DE, IT, UK, NL, NO, CA on E1 West Bank Settlement Plan

https://www.governo.it/it/articolo/joint-statement-leaders-france-germany-italy-and-united-kingdo...
3•dgellow•13m ago•0 comments

Anthropic Expects to Match SpaceX's Record IPO Size or Top It

https://www.bloomberg.com/news/articles/2026-08-20/anthropic-expects-to-match-spacex-s-record-ipo...
3•helsinkiandrew•13m ago•0 comments

Brancher un LLM sur un catalogue produit avec Django

https://tonydevweb.com/articles/brancher-llm-catalogue-produit.html
4•tonydevweb•14m ago•1 comments

What I learned building an AI applic

1•simondukr•14m ago•0 comments

Why Aren't Smart People Happier?

https://www.experimental-history.com/p/why-arent-smart-people-happier
1•rafaelc•14m ago•0 comments

AVX Bitwise ternary logic [VPTERNLOGD] instruction busted (2024)

https://arnaud-carre.github.io/2024-10-06-vpternlogd/
1•peter_d_sherman•15m ago•0 comments

Emoji Based Janet Packages and Codebases

https://hachyderm.io/@janet_catcus/117128090262354367
1•veqq•16m ago•0 comments

When Building Gets Cheap, Knowing What to Build Gets Expensive

https://twitter.com/adalagent/status/2090476725474131986
1•Aria06•16m ago•0 comments

Poisoned Postgres Connection Pools

https://planetscale.com/blog/postgres-poisoned-connection-pools
1•vzhou842•17m ago•0 comments

Excluded from everywhere: incompatible with every system I entered

https://msakkal.me/en/
1•MS8080•17m ago•0 comments

TrueForge – The open-source agent harness

https://github.com/truefoundry/trueforge
2•qiasl2•17m ago•0 comments