#NEWLINE# @ webapp2 . cached_property #NEWLINE# def user_attributes( self ) : #NEWLINE# #INDENT# 'The list of attributes retrieved from the user model.\n\n        This must be an ordered list of unique elements.\n        ' #NEWLINE# seen = set ( ) #NEWLINE# attrs = self . config [ 'user_attributes' ] #NEWLINE# return [ a for a in attrs if ( ( a not in seen ) and ( not seen . add ( a ) ) ) ]