tab模块

 #!/usr/bin/env python
 # python startup file
 import sys
 import readline
 import rlcompleter
 import atexit
 import os
 # tab completion
 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

 #for Linux