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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•7mo 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!

Top Sheet Metal Chassis Manufacturers?

1•alicebossgoo•23s ago•0 comments

'Ghost jobs' are on the rise – and so are calls to ban them

https://www.bbc.com/news/articles/clyzvpp8g3vo
1•1659447091•9m ago•0 comments

Have you noticed degradation in Opus 4.5 in the last few days

https://twitter.com/VictorTaelin/status/2001431627231080867
2•mesmertech•12m ago•1 comments

Mozilla's New CEO Confirms Firefox Will Become an "AI Browser"

https://www.omgubuntu.co.uk/2025/12/mozilla-new-ceo-firefox-ai-browser-strategy
2•LopRabbit•14m ago•0 comments

Fifty problems with standard web APIs in 2025

https://zerotrickpony.com/articles/browser-bugs/
1•dhruv3006•20m ago•0 comments

Built a tool to decode cocktail menus to stop ordering drinks I don't like

https://sipcandy.lovable.app/
1•buildandbrew•22m ago•2 comments

What career fields make an impact?

1•leethoe•26m ago•0 comments

China is building the most powerful hydropower system deep in the Himalayas

https://www.cnn.com/2025/12/17/china/china-largest-hydropower-dam-intl-hnk-dst
2•vinnyglennon•26m ago•0 comments

Single-Winner Voting Methods

https://dsernst.com/writing/2025/voting-methods
1•dsernst•30m ago•0 comments

Show HN: OmnAI – Sovereign AI infrastructure with multi-vault isolation

https://github.com/RilerCoasterBoy98765/OmnAI-v3.5
1•6teepees•42m ago•0 comments

Luddite List

https://docs.google.com/spreadsheets/d/1M_UjOPxpbKMYes5CcWRWXNXRq4ZOAAwDgQ08CIN3pec/edit?gid=7494...
3•paulorlando•44m ago•0 comments

Mathgpt.today Discord Bot

https://mathgpt.today/
1•umeedsto•44m ago•1 comments

Judge hints Vizio TV buyers may have rights to source code licensed under GPL

https://www.theregister.com/2025/12/05/vizio_gpl_source_code_ruling/
3•pabs3•47m ago•0 comments

Behold the Infamous PS2 Linux Kit [video]

https://www.youtube.com/watch?v=FQmenrPioBM
1•zdw•49m ago•0 comments

A simple idea filter that saved me months of wasted work

1•peterbricks•57m ago•0 comments

True origin of 'first black Briton' revealed

https://www.bbc.co.uk/news/articles/ce86jzgxxy4o
3•GaryBluto•58m ago•0 comments

Show HN: Aiologic – GIL-powered* locking library for Python

https://github.com/x42005e1f/aiologic
1•x42005e1f•1h ago•0 comments

Ask HN: Etiquette giving feedback on mostly AI-generated PRs from co-workers

1•chfritz•1h ago•3 comments

Eventual Rust in CPython

https://lwn.net/Articles/1046933/
1•pykello•1h ago•0 comments

Apple's Preventing Some Apps from Working on Older iPhones [video]

https://www.youtube.com/watch?v=WXqVV8_GORE
2•chii•1h ago•0 comments

Adding Dialogue to Real Video with AI

https://www.unite.ai/adding-dialogue-to-real-video-with-ai/
1•50kIters•1h ago•0 comments

Tanstack AI – open-source AI SDK

https://tanstack.com/ai/latest
1•etoxin•1h ago•1 comments

Digital detox: how to switch off without paying the price

https://theconversation.com/digital-detox-how-to-switch-off-without-paying-the-price-new-research...
4•devonnull•1h ago•0 comments

Why Your WordPress Site Needs a Paywall for Robots

https://402gate.xyz/blog/why-your-wordpress-site-needs-a-paywall-for-robots
2•thunderbong•1h ago•0 comments

How Much Energy Does One Solar Panel Produce in Australia?

4•scorpeoanlibra•1h ago•0 comments

Ringspace: A Proposal for the Human Web

https://taggart-tech.com/ringspace/
2•todsacerdoti•1h ago•0 comments

Show HN: PacketPro – Inspect iOS app network traffic locally

https://apps.apple.com/us/app/packetpro/id6755604263
1•noteable•1h ago•0 comments

Germany: Amazon is not allowed to force customers to watch ads on Prime Video

https://www.zeit.de/wirtschaft/2025-12/amazon-urteil-video-kunden-werbung
13•febed•1h ago•2 comments

Salesforce Acquires Qualified

https://www.salesforce.com/news/stories/salesforce-signs-definitive-agreement-to-acquire-qualifie...
2•brendanashworth•1h ago•1 comments

Education South Africa

https://educationsouthafrica.com/
1•NicBradley•1h ago•1 comments