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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!

Task engine VM where tasks can contain own executable instructions

https://github.com/tracyspacy/spacydo
1•tracyspacy•1m ago•1 comments

Show HN: I built Planndu when task lists stopped working for me

https://planndu.com/
1•bashmaster•3m ago•0 comments

List of Atrocities committed by US authorities

https://github.com/dessalines/essays/blob/main/us_atrocities.md
1•guerrilla•5m ago•0 comments

My Favorite Books of 2025

https://theaiunderwriter.substack.com/p/my-favorite-books-of-2025
1•participant26•12m ago•1 comments

I Didn't Buy Traffic – I Built a Growth Engine Instead

https://www.google.com/search?q=site%3Avect.pro&oq=&gs_lcrp=EgZjaHJvbWUqCQgAECMYJxjqAjIJCAAQIxgnG...
1•WoWSaaS•13m ago•1 comments

Ask HN: Any team-wide experience with vibe coding?

1•tpetrina•16m ago•1 comments

Confidence Required

https://sive.rs/confidence
2•herbertl•17m ago•0 comments

Show HN: Jetbase – A Python database migration tool (Alembic alternative)

https://github.com/jetbase-hq/jetbase
2•jaz1•22m ago•0 comments

Show HN: I made a tool to strip GPS and EXIF metadata from photos client-side

https://metarefresh.net/
2•BenjaminHas•23m ago•6 comments

Semiconductor Fabs II: The Operation

https://nomagicpill.substack.com/p/semiconductor-fabs-ii-the-operation
1•nomagicpill•23m ago•0 comments

Building Anything With the Interrogation Method

https://mough.xyz/2026/01/you-can-create-anything/
1•moughxyz•24m ago•0 comments

Stoolap 0.2 Released for Modern Embedded SQL Database in Rust

https://www.phoronix.com/news/Stoolap-0.2-Rust-Embedded-SQL
1•mikece•25m ago•0 comments

Louis Mosley of Palantir at the Science, Innovation and Technology Committee

https://committees.parliament.uk/oralevidence/16290/html/
1•macleginn•27m ago•0 comments

Classroom Phone Bans Work. So Why Don't All Schools Do It?

https://www.wsj.com/us-news/education/school-phone-ban-test-scores-66f8dab7
1•Fiveplus•29m ago•0 comments

Common pesticides and plastic chemicals stifle healthy gut bacteria

https://www.thenewlede.org/2025/11/pesticides-gut-microbiome-bacteria/
1•PaulHoule•31m ago•0 comments

BlueSCSI Ultra and Ultra Wide

https://bluescsi.com/ultra
1•p_ing•31m ago•0 comments

Show HN: FP-pack – Functional pipelines in TypeScript without monads

https://github.com/superlucky84/fp-pack
1•superlucky84•34m ago•1 comments

CS50x 2026: Artificial Intelligence [video]

https://www.youtube.com/watch?v=-9bo8HlSxwQ
1•vinhnx•36m ago•0 comments

The debate about whether the NHS should use magic mushrooms to treat depression

https://www.bbc.com/news/articles/ckg936l88e7o
1•bookofjoe•38m ago•1 comments

Google principal engineer Jaana Dogan – Cloude Code matched year of work in hour

https://twitter.com/rakyll/status/2007239758158975130
1•_____k•39m ago•0 comments

Internet is eating itself. What's next? Model collapse and AI data crisis

https://sderosiaux.substack.com/p/internet-is-eating-itself-whats-next
1•chtefi•41m ago•1 comments

JavaScript's For-Of Loops Are Fast

https://waspdev.com/articles/2026-01-01/javascript-for-of-loops-are-actually-fast
3•surprisetalk•43m ago•0 comments

Zeit v1

https://xn--gckvb8fzb.com/zeit-v1/
2•surprisetalk•44m ago•1 comments

Zeit: A command line tool for tracking time

https://zeit.observer
1•surprisetalk•44m ago•0 comments

Janderland/fenv: FoundationDB development environment

https://github.com/janderland/fenv
1•surprisetalk•44m ago•0 comments

Show HN: Turn raw screen recording into precise guide with annotated screenshots

1•docuagent•46m ago•0 comments

Inside Elon Musk's Optimus Robot Project

https://www.wsj.com/tech/elon-musk-optimus-robots-7196d53e
1•fortran77•46m ago•2 comments

Researchers spot Saturn-sized planet in the "Einstein desert"

https://arstechnica.com/science/2026/01/researchers-spot-saturn-sized-planet-in-the-einstein-desert/
2•Brajeshwar•51m ago•0 comments

Bacteria reveal second 'shutdown mode' for surviving antibiotic treatment

https://phys.org/news/2026-01-bacteria-reveal-shutdown-mode-surviving.html
1•Brajeshwar•51m ago•0 comments

First breathing 'lung-on-chip' developed using genetically identical cells

https://medicalxpress.com/news/2025-12-lung-chip-genetically-identical-cells.html
1•Brajeshwar•51m ago•0 comments