Howdy, Reviving this old thread. The comments by Patrick and Brian really intrigued me, so I pursued the topic. Found a few interesting articles and one great article. My study has resulted in a recipe for those of us continually nagged by the question, "how can I get constant game speed independent of frame rate?". The demo requires Pygame, but the clock module only requires Python.
GameClock (http://www.pygame.org/wiki/ConstantGameSpeed) derived from "deWiTTERS Game Loop" (http://www.koonsolo.com/news/dewitters-gameloop/). Cheers, Gumm