#NEWLINE# def delete_attribute( self , attr_name , attr_value = None ) : #NEWLINE# #INDENT# '\n        Queue the deletion of an attribute from an item in DynamoDB.\n        This call will result in a UpdateItem request being issued\n        with update action of DELETE when the save method is called.\n\n        :type attr_name: str\n        :param attr_name: Name of the attribute you want to alter.\n\n        :type attr_value: set\n        :param attr_value: A set of values to be removed from the attribute.\n            This parameter is optional. If None, the whole attribute is\n            removed from the item.\n        ' #NEWLINE# self . _updates [ self ] = ( 'DELETE' , attr_value )