#NEWLINE# def accept( self , visitor ) : #NEWLINE# #INDENT# '\n        For post-order stateful visitors\n        ' #NEWLINE# for w in self . when_tuples : #NEWLINE# #INDENT# w [ 0 ] . accept ( visitor ) #NEWLINE# w [ 1 ] . accept ( visitor ) #NEWLINE# #UNINDENT# self . else_expr . accept ( visitor ) #NEWLINE# visitor . visit ( self )