Extract CDATA Node

[Girish]

How do I extract CDATA node in Python? I'm using dom.minidom as
follows:-

from xml.dom.minidom import Document

class XMLDocument():

def __init__(self):
self.doc = Document()

def parseString(self, d):
self.doc = parseString(_encode(d))
return self

#Create instance of XMLDocument
doc = XMLDocument()
doc.parseString(open(os.curdir + '\\XML\\1.xml', 'r').read())
......

Please help me out.

Thanks,
Girish