[wxPython] wxFileNameFromPath()

I cannot get wxFileNameFromPath(pathname) to work. Python says

>> global name wxFileNameFromPath not found. Is this function not
>> implemented in wxPython?
>
> Use os.path.basename instead. Usually when there are as good or
> better things available already in Python I don't wrap the
> coresponding wx functions/classes.

This might be a good idea, but what about unicode?
In my application I need to grant internal data
coherence to unicode (and you all know it's not so easy),
when I call a wx.FileDialog.GetName() I get a unicode
and I'm happy, but when I use os.path.split it turns to
be a str !!
Actually, if path contained at least a non asccii charachter
result is unicode, but it doesn't seems to me to be coherent,
is it?

Isn't it a good reason for a wrapper?
Thanx in advance

ยทยทยท

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   Massimiliano Sartor