def __init__(self, parent, id=-1, pos=wx.DefaultPosition, size=wx.DefaultSize, style=wx.TAB_TRAVERSAL | wx.NO_BORDER, name=wx.PanelNameStr): super(ThumbnailPanel, self).__init__(parent, id, pos, size, style, name) self.parent = parent self.controller = ThumbnailPanelController(self) self.bitmap_width = 300 self.bitmap_height = 300 self.init_ui()