Question on importing wxPython

[Steven W. Orr]

python-2.3.5
wx-2.6

I just bought the wxPython In Action book and I see that all the examples 
say to
import wx
All of our pre-existing code was horribly doing a
from wxPython import *

I changed all the code so that it was doing an import wx and found that 
everything was broken. In particular, references to wxNewId would fail.

634 > python
Python 2.3.5 (#2, May  4 2005, 08:51:39)
[GCC 3.3.5 (Debian 1:3.3.5-12)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import wx
>>> wx.wxNewId
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
AttributeError: 'module' object has no attribute 'wxNewId'
>>>

In fact, the *only* way to get it was to go back to
import wxPython
and then refer to it as wxPython.wx.wxNewId

Is my system broken or am I missing something? i.e., should I be able to 
say import wx?

TIA

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