% ./python Lib/test/test_socket.py socket.error anthem 192.168.1.2 anthem.wooz.org ['anthem', 'www.wooz.org', 'www'] ['192.168.1.2'] ['anthem.wooz.org', 'anthem', 'www.wooz.org', 'www'] 23 Traceback (most recent call last): File "Lib/test/test_socket.py", line 104, in ? socket.getnameinfo(('x', 0, 0, 0), 0) socket.error: IPv4 sockaddr must be 2 tuple