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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!

Research paper overload: submissions capped at two a month

https://lemire.me/blog/2026/10/04/arxiv-capped-submissions-at-two-a-month/
1•smilelamp•34s ago•0 comments

Spotify billionaire's body scan startup Neko Health has come to America

https://techcrunch.com/2026/10/03/spotify-billionaires-body-scan-startup-has-come-to-america/
1•bookofjoe•1m ago•0 comments

ChatGPT-6 Astra cracks 217-year-old Napoleonic code in six hours

https://www.tomshardware.com/tech-industry/artificial-intelligence/chatgpt-6-astra-cracks-217-yea...
1•sbulaev•2m ago•0 comments

Ask HN: Is Freelancing Dead After AI?

1•karakoram•3m ago•0 comments

Spawned: AIO cloud platform for humans and agents

https://spawned.ai
1•handfuloflight•3m ago•0 comments

The Auditor's Opinion

https://www.cringely.com/2026/07/16/the-auditors-opinion/
1•colinprince•3m ago•0 comments

Slopcore

https://drive.google.com/file/d/1YG-AglzAvSkkvGX4-TP9VNtgoo_0cqAP/view
1•hmokiguess•7m ago•1 comments

Background Passive FTP with No GUI Control Survives Apple Store DFU

https://knowledgeisuserdata.medium.com/passive-ftp-enabled-on-macbook-after-apple-store-reset-and...
1•cududa•10m ago•0 comments

Superpowers Race to Put Nuclear Reactors on the Moon

https://www.nytimes.com/2026/10/04/world/asia/nuclear-reactors-moon.html
1•aeroscissorz1•14m ago•0 comments

Show HN: EchoPod – Learn Languages with Podcasts via AI Transcripts

https://echopod.clothpath.com/
1•huang4fun•15m ago•0 comments

Timeful: Design web apps visually, sync with code instantly

https://www.timeful.io/
1•eustoria•16m ago•0 comments

Russian strategy of war crimes escalation in Ukraine (winter 2026/2027)

https://phillipspobrien.substack.com/p/weekend-update-205-russias-strategy
1•froggy•17m ago•1 comments

The AI industry is booming. Women are getting left behind

https://www.theguardian.com/technology/2026/oct/04/women-ai-jobs-inequality
4•edward•17m ago•1 comments

Understanding the AI That Drives Robots

https://www.construction-physics.com/p/understanding-the-ai-that-drives
2•paulpauper•18m ago•0 comments

Google's first orbital data center is in orbit

https://lemire.me/blog/2026/10/04/googles-first-orbital-data-center-is-in-orbit/
1•smilelamp•18m ago•1 comments

Opting for Privacy in Webmentions

https://www.alexhyett.com/opting-for-privacy-in-webmentions/
1•eustoria•19m ago•0 comments

Does Costco Cause Cancer?

https://marginalrevolution.com/marginalrevolution/2026/10/does-costco-cause-cancer.html
2•paulpauper•19m ago•0 comments

Why Does Nobody Use Lemmy?

https://byte21516.xyz/blog/posts/2026/useLemmy/useLemmy.html
3•eustoria•20m ago•2 comments

Artificial Intelligence and Julius T. Tou?

1•thistletrek•21m ago•0 comments

Is AI Sentient

https://www.rintrah.nl/is-ai-actually-sentient/
1•airhangerf15•21m ago•1 comments

Show HN: An animated, customizable Git cheat sheet drawn by git-sim

https://initialcommit.com/learn/git/animated-cheat-sheet
1•initialcommit•21m ago•0 comments

Show HN: Z8Apps – mobile app creator platform

https://z8apps.com
1•relatedcode•23m ago•0 comments

Float and integer arithmetic follow two different paradigms

https://blog.pkh.me/p/49-float-and-integer-arithmetic-follow-two-different-paradigms.html
2•ux•23m ago•0 comments

Show HN: VisualHub – The high performance GitHub UI

https://github.com/IAmJSD/visualhub
1•astrid__•26m ago•0 comments

CTWM: Heavy-Tailed Memory Traces in Long-Horizon Agents

https://redreamality.com/blog/ctwm-heavy-tailed-memory-traces-long-horizon-agents/
1•acossta•26m ago•0 comments

Trump names intelligence chief Clayton as AI czar

https://www.reuters.com/world/us/jay-clayton-lead-trumps-ai-task-force-deliver-report-120-days-ws...
2•vrganj•31m ago•2 comments

Show HN: French Revolutionary Calendar

https://repcal.libcg.so/
2•libcg•31m ago•0 comments

Merlin

https://usemerlin.ai
1•handfuloflight•32m ago•0 comments

Is Hugging Face Down?

https://huggingface.co/models?other=base_model:quantized:ISTA-DASLab/Qwen3.8-Flash-Next-GSQ-RCO-C...
1•xlayn•35m ago•1 comments

From your first blinking LED to code running on a real board

https://codetochip.in/ide
1•praveen97uma•35m ago•0 comments