pip install pyreadline

import rlcompleter, readline

readline.parse_and_bind('tab: complete')

root@peter-virtual-machine:/usr/lib/python2.7/dist-packages# cat tab.py

import rlcompleter

import readline

import atexit

import os

# http://stackoverflow.com/questions/7116038/python-tab-completion-mac-osx-10-7-lion

if'libedit'in readline.__doc__:

    readline.parse_and_bind('bind ^I rl_complete')

else:

    readline.parse_and_bind('tab: complete')

    histfile = os.path.join(os.environ['HOME'],'.pyhist')

try:

    readline.read_history_file(histfile)

except IOError:

    pass

    atexit.register(readline.write_history_file, histfile)

    del readline, rlcompleter, histfile, os