Cook's Ruler Sweep: 10k-City Tsp in 17 Minutes (pure Python)

A 150-line pure-Python TSP heuristic that beats Nearest Neighbor by +10–13.8% on real-world geographic data — including 10,000 US cities in under 17 minutes.

No training, no compilation, no external solvers. Just geometry and a 1.3× tolerance band.

I built it in a 72-hour rage after hitting a wall trying to optimize an app I'm building for my cybersecurity startup.

https://github.com/g4mbit5/Cooks-Ruler-Sweep