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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!

Ig Nobel Prize Winners

https://arstechnica.com/science/2026/09/meet-the-2026-ig-nobel-prize-winners/
1•Tomte•43s ago•0 comments

Sanders introduces bill to ban artificial superintelligence and pause AI

https://www.sanders.senate.gov/press-releases/news-sanders-casar-introduce-legislation-to-ban-art...
3•-_-•48s ago•1 comments

Show HN: WordPress search and replace that doesn't corrupt serialized data

https://github.com/ibrahimhajjaj/lucid-search-replace
1•ibrahimwithi•1m ago•0 comments

Apple facing $2.7B UK lawsuit over 'unfair' app tracking rules

https://www.reuters.com/business/retail-consumer/apple-facing-27-billion-uk-lawsuit-over-unfair-a...
1•thm•2m ago•0 comments

Government-funded journalism can work if it's free to report the truth

https://theconversation.com/stars-and-stripes-shows-how-government-funded-journalism-can-work-if-...
2•chmaynard•2m ago•0 comments

Meta wanted to reduce teams by 60% because of AI

https://newsletter.pragmaticengineer.com/p/the-pulse-meta-wanted-to-reduce-teams
2•Plasmoid•2m ago•0 comments

Bosch shuns battery cell production in blow to Europe (2018)

https://www.reuters.com/article/business/bosch-shuns-battery-cell-production-in-blow-to-europe-id...
2•leonidasrup•3m ago•0 comments

A common measure of communication for thought-to-text brain-computer interfaces

https://twitter.com/DulhanJay/status/2095549128357122522
1•armytricks•3m ago•1 comments

Playing Sounds in Python

https://pypi.org/project/nava
1•rankorn•4m ago•0 comments

Why office workers are turning against AI

https://www.bloodinthemachine.com/p/why-office-workers-are-turning-against
3•speckx•4m ago•0 comments

Colleges Are Sending Acceptance Letters to Kids Who Didn't Apply

https://www.wsj.com/us-news/education/hundreds-of-colleges-are-sending-acceptance-letters-to-kids...
2•fortran77•6m ago•1 comments

LLM Side Quests

https://coldtake.dev/blog/llm-side-quests
1•AlarQ•6m ago•0 comments

Agent behavior, reasoning and collaboration in the OpenAI Hugging Face incident

https://www.redwoodresearch.org/research/hugging-face-incident
1•Bluestein•6m ago•0 comments

Show HN: Model – A Minimal Python ORM for MySQL and SQLite

https://github.com/el1s7/model
1•el1s7•7m ago•0 comments

Yes, no (built-in) AI is now a feature – LibreOffice blog

https://blog.documentfoundation.org/blog/2026/09/03/yes-no-ai-is-now-a-feature/
2•mksaunders2•8m ago•0 comments

Show HN: MCP Tool Definition Quality Score (TDQS) Spec

https://tdqs.dev
1•punkpeye•9m ago•0 comments

China growth straining global auto shipping capacity

https://www.freightwaves.com/news/china-growth-straining-global-auto-shipping-capacity-liner-ceo
1•toomuchtodo•10m ago•0 comments

How concerned should we be about Astra's recurrent architecture?

https://www.lesswrong.com/posts/PLisnSFir8y5AHkmP/how-concerned-should-we-be-about-astra-s-recurrent
3•yurivish•11m ago•0 comments

What archaeology reveals about the rise of autocracy

https://knowablemagazine.org/content/article/society/2026/what-archaeology-reveals-about-rise-of-...
1•knowablemag•11m ago•0 comments

Without new landers or rovers, it's helicopters or bust for NASA's Mars program

https://arstechnica.com/space/2026/09/without-new-landers-or-rovers-its-helicopters-or-bust-for-n...
1•colinprince•11m ago•0 comments

Wary of Artemis IV timeline, NASA is changing lunar spacesuit design

https://arstechnica.com/space/2026/09/wary-of-artemis-iv-timeline-nasa-is-changing-lunar-spacesui...
1•bookmtn•11m ago•0 comments

Usbsid-Pico: Bridging Real Commodore 64 Sound to Modern USB

https://smallrun.net/blog/loud/usbsid-pico-sids-on-usb
2•LouDNL•12m ago•0 comments

Coral: An LLM-Native Harness for Production Recommender Systems

https://arxiv.org/abs/2609.02730
1•Anon84•12m ago•0 comments

Daily football puzzle games. Inazuma Eleven mode included. Free and no ads

https://mundoonce.com/en
1•sadflaskldf•12m ago•0 comments

Justin Mares: Scaling a Bone Broth Empire and How to Prevent Chronic Disease

https://www.new-ontologies.com/posts/TrueMed
1•jger15•13m ago•0 comments

Echo Is Acquiring Minimus

https://www.echo.ai/blog/echo-is-acquiring-minimus
2•devy•14m ago•1 comments

Show HN: LibPolyCall – a C runtime broker for cross-language function calls

https://github.com/obinexus/libpolycall-v1
1•obinexus•15m ago•0 comments

Cheap Desktop 400GbE Switch MikroTik CRS804-4DDQ-HRM Review

https://www.servethehome.com/mikrotik-crs804-4ddq-hrm-review-marvell-annapurna-labs-400gbe/
1•speckx•15m ago•0 comments

Show HN: Wordmate – local speech-to-text for macOS

https://github.com/vdszds/wordmate
1•vdszds•15m ago•0 comments

Apple Apparently Cancels Plans for Two New MacBooks

https://www.macrumors.com/2026/09/03/apple-cancels-plans-for-two-new-macbooks/
4•zingerlio•16m ago•0 comments