vim tab.py

 #!/usr/bin/env python

 #

 #Tab

 import sys

 import readline

 import rlcompleter

 import atexit

 import os

 readline.parse_and_bind('tab:complete')

 #history file

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

 try:

     readline.read_history_file(histfile)

 except IOError:

     pass

 atexit.register(readline.write_history_file,histfile)

 del os,histfile,readline,rlcompleter