I would expect the output of getencoding in the following python session to be "ISO-8859-1":
>>> import urllib2
>>> response = urllib2.urlopen("http://www.google.com/")
>>> response.info().plist
['charset=ISO-8859-1']
>>> response.info().getencoding()
'7bit'
This is with python version 2.6 ('2.6 (r26:66714, Aug 17 2009, 16:01:07) \n[GCC 4.0.1 (Apple Inc. build 5484)]' specifically).