wxpython single choice dialog

if __name__ == '__main__':

    app = wx.PySimpleApp()

    dlg = wx.SingleChoiceDialog(None,

        'What version of Python are you using?',

        'Single Choice',

        ['1.5.2', '2.0', '2.1.3', '2.2', '2.3.1'])

    if dlg.ShowModal() == wx.ID_OK:

        response = dlg.GetStringSelection()

 

    print response

    dlg.Destroy()

    app.MainLoop()