Python命令tab键自动补全

# 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