一、查看Python安裝路徑

[root@controller ~]# python

Python 2.7.5 (default, Nov 20 2015, 02:00:19)

[GCC 4.8.5 20150623 (Red Hat 4.8.5-4)] on linux2

Type "help", "copyright", "credits" or "license" for more information.

>>> import sys

>>> sys.path

['', '/usr/lib64/python27.zip', '/usr/lib64/python2.7', '/usr/lib64/python2.7/plat-linux2', '/usr/lib64/python2.7/lib-tk', '/usr/lib64/python2.7/lib-old', '/usr/lib64/python2.7/lib-dynload', '/usr/lib64/python2.7/site-packages', '/usr/lib/python2.7/site-packages']

二、切換目錄到python的安裝目錄下，進行tab鍵補全模塊的編寫

[root@controller ~]# cd /usr/lib64/python2.7/

[root@controller python2.7]# vim tab.py

#!/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

三、避免進入python之后，不用每次都導入tab模塊

###進入家目錄，編寫 .bashrc文件在最后添加下面一行，保存退出###

[root@controller ~]#vim .bashrc

export PYTHONSTARTUP=/usr/lib64/python2.7/tab.py

###家目錄.bashrc文件只有用戶登錄時才會加載生效，需要進行下面的操作來生效###

[root@controller ~]#source .bashrc

OK，那么現在我們就可以不用每次進行python之后進行import tab 動作來使tab鍵補全功能生效了。