I am trying to follow the Biopython cookbook to do some basic access of Entrez, but it acts like there is something wrong, as I get:

ERROR:  [Errno 8] nodename nor servname provided, or not known

Here is my basic code:

from Bio import Entrez
import urllib2

try:
    handle = Entrez.einfo()
    result = handle.read()
    print result
except urllib2.HTTPError as e:
    # inform them of the specific error here (based off the error code)
    print "ERROR: ", e.code
except urllib2.URLError as e:
    # inform them of the specific error here
    print "ERROR: ", e.reason
except Exception as e:
    # inform them that a general error has occurred
    print "ERROR: ", e

Any ideas what could be the issue?