import wx class App(wx.App): def __init__(self, redirect=True, filename=None): wx.App.__init__(self, redirect, filename) def OnInit(self): dlg = wx.MessageDialog(None, 'Question!','MessageDialog', wx.YES_NO | wx.ICON_QUESTION) result = dlg.ShowModal() dlg.Destroy() return True app = App(False, "output") fred = app.MainLoop()