python补全tab

vi python_tab.py
#!/usr/bin/env python
import sys
import readline
import rlcompleter
import atexit
import os
#tab completion
readline.parse_and_bind('tab: complete')
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
将脚本复制到此目录下/usr/lib64/python2.6/
cp python_tab.py /usr/lib64/python2.6/
运行python，导入刚刚创建的脚本
python
>>> import python_tab