#NEWLINE# def postorder( self , f ) : #NEWLINE# #INDENT# for ( test_expr , result_expr ) in self . when_tuples : #NEWLINE# #INDENT# for x in test_expr . postorder ( f ) : #NEWLINE# #INDENT# ( yield x ) #NEWLINE# #UNINDENT# for x in result_expr . postorder ( f ) : #NEWLINE# #INDENT# ( yield x ) #NEWLINE# #UNINDENT# #UNINDENT# for x in self . else_expr . postorder ( f ) : #NEWLINE# #INDENT# ( yield x ) #NEWLINE# #UNINDENT# ( yield f ( self ) )