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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•8mo 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!

Tell HN: We Are in Recession Now

1•ewuhic•28s ago•0 comments

How Jeff Bezos Brought Down the Washington Post

https://www.newyorker.com/news/annals-of-communications/how-jeff-bezos-brought-down-the-washingto...
1•thm•1m ago•0 comments

A Record Player Gave Me the Idea to Revive the Home Computer

https://text.tchncs.de/r3nun0mxs9
1•doener•1m ago•0 comments

I studied the latest Epstein files. As a woman, this is what I felt

https://www.thetimes.com/life-style/celebrity/article/i-studied-the-latest-epstein-files-as-a-wom...
1•binning•2m ago•0 comments

I think I created a perfect product.

https://www.woroboro.com/privacy.html
2•kovaljubo•4m ago•1 comments

ICE urged to explain memo about collecting info on protesters

https://arstechnica.com/tech-policy/2026/02/capture-it-all-ice-urged-to-explain-memo-about-collec...
2•pseudolus•4m ago•0 comments

Intel's Xeon 600 Pushes Client Workstations into Server-Class Territory

https://www.storagereview.com/news/intels-xeon-600-pushes-client-workstations-into-server-class-t...
1•rbanffy•6m ago•0 comments

Show HN: UCP Checker – A manifest debugger for the agentic web

https://ucpchecker.com/extension
1•benjifisher•6m ago•1 comments

Show HN: Fast Sudoku solver that enumerates all solutions

https://sudoku-solver.piyochan.jp
1•math-hiyoko•7m ago•0 comments

A Trump 'Blockade' Is Stalling Wind and Solar Projects Nationwide

https://www.nytimes.com/2026/02/04/climate/wind-solar-projects.html
1•doener•9m ago•2 comments

Silver Star Airpower: Airmen and Guardians Take on Iran

https://www.airandspaceforces.com/article/silver-star-airpower-airmen-and-guardians-take-on-iran/
2•speckx•9m ago•0 comments

Does AI have human-level intelligence? The evidence is clear

https://www.nature.com/articles/d41586-026-00285-6#ref-CR8
1•fdeage•9m ago•0 comments

Manual on Uniform Traffic Control Devices for Streets and Highways

https://mutcd.fhwa.dot.gov/
1•mhb•11m ago•0 comments

Mappa – Fine-tune ANY multi-agent LLM systems end-to-end with AI coaches

2•junyuren•11m ago•2 comments

ReTerminal E1001

https://www.seeedstudio.com/reTerminal-E1001-p-6534.html
1•crummy•12m ago•0 comments

1.6M cubic metres of fake snow are ready for the Winter Olympics

https://www.euronews.com/green/2026/01/28/16-million-cubic-metres-of-fake-snow-are-ready-for-the-...
1•jumpocelot•13m ago•0 comments

Alexa+ powered by Anthropic now Generally available in the US

https://www.aboutamazon.com/news/devices/alexa-plus-available-free-prime-members-us
1•jxyxfinite•15m ago•1 comments

The Google Squeeze

https://stratechery.com/2019/the-google-squeeze/
1•fanf2•15m ago•0 comments

Show HN: K8s clusters on macOS using Apple's containerization framework

https://github.com/willswire/cluster
1•willswire•16m ago•0 comments

Devenv: Declarative Developer Environments using Nix

https://devenv.sh/
2•dtj1123•16m ago•0 comments

Show HN: TabChop – AI parses receipts into shareable, realtime itemized splits

https://tabchop.app/overview
3•ydumpeta•18m ago•1 comments

Show HN: Csvdb – Git-friendly CSV directories that convert to SQLite or DuckDB

https://github.com/jeff-gorelick/csvdb
1•jeff-gorelick•18m ago•0 comments

We built Moltbook a search engine

https://moltsearch.algolia.com
4•l_whalen_alg•18m ago•1 comments

Learning Low-Level Computing and C++ by Making a Game Boy Emulator

https://byteofmelon.com/blog/2026/making-of-gamebyte
3•romes•20m ago•0 comments

The Legacy of Daniel Kahneman: A Personal View (2025)

https://ejpe.org/journal/article/view/1075/753
1•cainxinth•21m ago•0 comments

JetBrains drops X11 for Wayland as default in IntelliJ-based IDEs

https://www.neowin.net/news/jetbrains-drops-x11-for-wayland-as-default-in-intellij-based-ides/
2•bundie•22m ago•0 comments

EarlyBinder and Instantiating Parameters

https://rustc-dev-guide.rust-lang.org/ty-module/early-binder.html
1•todsacerdoti•22m ago•0 comments

Show HN: Resume Tailor – Privacy-first resume rewriter (no signup)

https://deadsimpletools.com/resume-tailor
1•midnightdim•22m ago•0 comments

3.5%, General Strikes, and Goals

https://www.patreon.com/posts/3-5-general-and-149563547
2•ortr•22m ago•0 comments

Show HN: LIAM – email and calendar assistant that drafts replies and schedules

https://doitliam.com
4•sintem•22m ago•4 comments