#NEWLINE# @ property #NEWLINE# def total_discount_incl_tax( self ) : #NEWLINE# #INDENT# '\n        The amount of discount this order received\n        ' #NEWLINE# discount = D ( '0.00' ) #NEWLINE# for line in self . lines . all ( ) : #NEWLINE# #INDENT# discount += self . discount_incl_tax #NEWLINE# #UNINDENT# return discount