giancan 0 Light Poster

Hi guys,
I'm having problems with wxPython.
If I put in the header of my files

from wxPython.wx import *

it works fine, even if I see a DeprecationWarning about it.
If I write

import wx

(as also wxformbuilder would do) I get errors like
name wxPySimpleApp is not defined

The point is not how to fix the last error (name not defined), I can re-write the code accordingly. The problem is why the import wx doesn't give any output!
Thanks for your help