import sys, urllib2
req = urllib2.Request(sys.argv[1])
try:
fd = urllib2.urlopen(req)
except urllib2.URLError, e:
print "Error retrieving data:", e
sys.exit(1)
print "Retrieved", fd.geturl()
info = fd.info()
for key, value in info.items():
print "%s = %s" % (key, value)