#!/usr/bin/env python

import urllib
import errno

try:
    filename, headers = urllib.urlretrieve("http://yandex.ru:12345/", "./some-file.tmp")

except IOError as e:
    print "type(e): ", type(e)
    print "e.errno: ", e.errno
    print "type(e.errno): ", type(e.errno)
    print "e.sterror: ", e.strerror