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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!

Phase Lock

https://phaselock.satpugnet.com/
1•WhyIsItAlwaysHN•1m ago•0 comments

Anthropic warns AI models could self-replicate across home devices

https://www.cnbc.com/2026/10/13/anthropic-ai-models-self-replication-smart-devices.html
1•gmays•3m ago•0 comments

New Kaney's Weird Files Is Out – September 2026

https://kaneysweirdfiles.substack.com/p/september-2026-oddly-bahving-ai-evil
1•experiencertim•4m ago•0 comments

Lazyagents – Lazygit for AI coding agents

https://github.com/rogeriojunior31/lazyagents
1•rogeriojunior31•5m ago•0 comments

The (Overdue) Collapse of Oracle's $900B Empire

https://www.youtube.com/watch?v=9Dne3rKiIn0
2•cable2600•6m ago•0 comments

Blocking AI-bot can be a double-edged Sword

https://www.theverge.com/ai-artificial-intelligence/1013195/ai-agents-blocked-web
1•zlu•8m ago•0 comments

Writing is no longer proof of work

https://www.seangoedecke.com/writing-is-no-longer-proof-of-work/
1•anotherevan•9m ago•0 comments

AI Reviews All-In

https://all-in-claim-check.pages.dev/
1•siliconc0w•10m ago•1 comments

We ran 53 open-source AI agents through behavioral tests and filed 37 bugs

https://defuzex.ai/blog/we-ran-53-open-source-ai-agents-through-behavioral-tests-and-filed-37-bugs
4•YaoAnthony•11m ago•1 comments

Show HN: MCPX – MCP server directory scanning for tool poisoning, leaked keys

https://www.mcpx.digital/
1•chaostheorx•15m ago•0 comments

Bringing USB 3 and USB4/Thunderbolt to Windows 98 to 7

https://yeokhengmeng.com/2026/10/xhci98-usb3-usb4/
1•cheeaun•17m ago•0 comments

Fable 5.5: SVG of a controller riding a bicyle riding a pelican riding a bicycle

https://twitter.com/dummerspast39/status/2111577334436319355
1•septisum•18m ago•0 comments

Novel brain activity under anesthesia challenges what we know re: consciousness

https://www.sciencedaily.com/releases/2026/10/261015003440.htm
1•bookofjoe•24m ago•0 comments

Electric Mercedes-AMG GT SUV unveiled with 1,153 HP and 710 kW charging

https://electrek.co/2026/10/17/mercedes-amg-gt-suv-electric-1153-hp-710-kw-charging/
1•cisc•28m ago•0 comments

NY announces game ownership bill requiring ownership rather than licensing

https://www.tomshardware.com/video-games/new-york-rep-announces-game-ownership-bill-that-would-re...
4•guiambros•33m ago•1 comments

Decision Architecture: Governing Cybersecurity at Machine Speed

https://sadb.com.br/
1•nivearibeiro•33m ago•0 comments

EU ENISA CVEs

https://euvd.enisa.europa.eu/
1•based2•37m ago•0 comments

Squeeze into those skinny jeans: millennial culture is back

https://www.economist.com/culture/2026/10/15/squeeze-into-those-skinny-jeans-millennial-culture-i...
1•Anon84•38m ago•0 comments

Romania names first AI minister: Bitdefender researcher Bogdan Dumitru

https://www.newsminimalist.com/articles/romania-names-first-ai-minister-bitdefender-researcher-bo...
1•jocker12•41m ago•0 comments

Comprehensive Agentic Infrastructure as Code

https://getintentric.com/
1•benzingtech•43m ago•0 comments

Fable 5.5: SVG of a controller riding a bicyle riding a pelican riding a bicycle

https://claude.ai/artifact/WiSwhxpKDRm1jyXbvTcAQy
3•sergiotapia•46m ago•0 comments

Show HN: NoBadge – Hide Dock Badges During macOS Focus

https://github.com/asdftq/NoBadge
2•flrngel•48m ago•0 comments

Zelensky says Musk-owned satellite system still restricted in Ukraine

https://www.axios.com/2026/10/17/zelensky-starlink-elon-musk-trump
6•mdp2021•50m ago•0 comments

AI Infrastructure Index

https://www.stockatomics.com/ai-infrastructure-index
1•happster•52m ago•0 comments

Show HN: HardwareOS - Turn a prompt into hardware project you can wire and flash

https://hardwareos.ai
1•singhvir943•52m ago•0 comments

Al, Automation and India's Workforce

https://glcfer.allforone.co.in/
1•cyb0rg0•56m ago•1 comments

Show HN: MoroccoAPI: An open source API for Moroccan public data

https://moroccoapi.dev/
1•benizizamohamed•58m ago•0 comments

Rogue 'jumping genes': Big dogs age faster than little ones

https://www.nature.com/articles/d41586-026-03199-5
1•cybermango•1h ago•0 comments

I run my one-person business with ~17 narrow AI agents

https://blakelapierre.substack.com/p/i-run-my-one-person-business-with
3•agentofone•1h ago•0 comments

Weak Links Start to Show in A.I. Borrowing

https://www.nytimes.com/2026/10/17/business/-debt-coreweave-oracle-softbank.htmlai
1•tangled•1h ago•0 comments