Okay, looks like it was a version issue. For this to work you really need comtypes 0.2.1. I was using 0.6.0 thinking any bugs in this function was resolved by now, but it seems that the 0.2.1 GetEvents is a bit more involved. With a little searching I found v 0.2.1 here.
I know this post fairly old, but I'm trying to get python working with my navigator and this script seems like it's the best bet. I can get it working to a point. Running the script shows "SpaceNavigator : Connected!" but that's it - I don't get values printing out. It might have to do wit...