The docs for 2.6 and 2.7 say socket.getaddrinfo takes keyword arguments.

http://docs.python.org/release/2.6.6/library/socket.html?highlight=socket#socket.getaddrinfo

> socket.getaddrinfo(host, port, family=0, socktype=0, proto=0, flags=0)

But that doesn't actually work in Python 2.7.

$ ./python 
Python 2.7.3+ (2.7:ec4ea40be2f6, Dec 11 2012, 14:43:35) 
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.

>>> import socket
>>> s = socket.getaddrinfo('localhost', 999, family=socket.AF_INET)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: getaddrinfo() takes no keyword arguments

Looks like it was introduced in 61999:c963478b9092.