What type of UI is this for? The Python Cookbook, 2nd Ed. has a nice textual solution. I'm not sure if this is the same one, but here is <a href="http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/168639">one from ASPN</a>. Here is one <a href="http://wxpython.org/docs/api/wx.ProgressDialog-class.html"> for wxPython.</a>