[XML-SIG] python xml parser

[J. Xu]

How can I pass stdout of processes, or output stream of network channels 
(like ssh) to a python xml parser (either through DOM or SAX) so that 
xml can be used as the communication tool among different components of 
the software? I think the standard python xml reader expects a file-like 
  object or string as the input, but not sure if it can take a stream. 
Any suggestions are highly appreciated.