[XML-SIG] string encoding translater

[PLU Michel CNET/DSM/LAN]

here is my problem

i want to parse an IS0-8859-1 ( iso latin 1) encoded xml file . 
But when i parse it whith the python sax parser ( saxexts.make_parser)  all
strings in the resulted dom tree ( attributes value or nodes data)  are
store as utf-8 ( unicode) encoded string.

as example for an xml line as
<term  name="Matières" fatherId="root"/>

produce a node where the value of attribute name is : Matières

is there a way in python to translate the utf-8 encode string to orginal
iso-8859

	thanks for answers

			Michel