PyParticles is a particle simulation toolbox entirely written in Python. It simulates a particle-by-particle model with the most popular integrations methods, including Euler, Runge Kutta, and Midpoint. It represents the results on an OpenGL or Matplotlib plot, and offers an easy-to-use API.
schwinn810 allows you to extract data (tracks, laps, points, and waypoints) from a Schwinn 810 GPS sport watch with a heart rate monitor. It can optionally feed points to gpsbabel to convert data into other formats like TCX, GPX, and KML. A standalone converter for TCX with split-lap and heart rate data is provided. It should work on any platform as long as there is a driver for the CP2102 USB-UART bridge from SiLabs and python-serial.