def __init__(self): wx.Frame.__init__(self, None, wx.ID_ANY, size=(900, 600), style=wx.DEFAULT_FRAME_STYLE ^ wx.RESIZE_BORDER ^ wx.MAXIMIZE_BOX) self.userId = 0 # Set up main panel self.mainMenuPanel = Panels.MainMenu(self) self.sizer = wx.BoxSizer(wx.VERTICAL) self.sizer.Add(self.mainMenuPanel, 1, wx.EXPAND) self.winStack = [] self.userId = None self.shownPanel = None self.shownName = '' self.pushWinStack(self.mainMenuPanel)