#NEWLINE# def pre_tracer( self , obj , name , old , new , handler ) : #NEWLINE# #INDENT# ' The traits pre event tracer.\n\n        This method should be set as the global pre event tracer for traits.\n\n        ' #NEWLINE# tracer = self . _get_tracer ( ) #NEWLINE# tracer . pre_tracer ( obj , name , old , new , handler )