#NEWLINE# def __hash__( self ) : #NEWLINE# #INDENT# if ( not hasattr ( self , '_hash' ) ) : #NEWLINE# #INDENT# hash_sum = super ( ValidatedImmutableObject , self ) . __hash__ ( ) #NEWLINE# object . __setattr__ ( self , '_hash' , hash_sum ) #NEWLINE# #UNINDENT# return self . _hash