FloatSpin implements a floating point spin control for wxPython. In order to correctly handle the floating point numbers without having rounding errors or non-exact floating point number representations, it uses a very nice class that is capable, in theory, of handling infinite floating point precision.
Downloads, screenshots, demo and more info can be found at:
http://xoomer.alice.it/infinity77/main/freeware.html#floatspin
Andrea.