Python: how to know IP address

>>> import socket

>>> print socket.gethostbyname_ex(socket.gethostname())[2]

['10.144.53.165', '192.168.56.1']

>>> print socket.gethostbyname_ex(socket.gethostname())

('myPC.net1.net2', [], ['10.144.53.165', '192.168.56.1'])

>>> print socket.gethostbyname(socket.gethostname())

10.144.53.165