爲python添加tab自動補全功能

fedora ~ $ python

Python 2.7.8 (default, Nov 10 2014, 08:19:18) 

[GCC 4.9.2 20141101 (Red Hat 4.9.2-1)] on linux2

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

>>> import sys                               #導入sys模塊
>>> sys.path                                 #查看python環境變量
['', '/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/lib64/python2.7/site-packages/gtk-2.0', '/usr/lib/python2.7/site-packages']

環境變量中 搜索順序 ‘’ 表明當前目錄，會按照這個順序來搜索你要的模塊。

個人放在 /usr/lib64/python2.7/site-packages/ 這個目錄

在指定的目錄下面添加 tab.py   (tab.py 是借的別人的)

/usr/lib64/python2.7/site-packages $sudo  vim tab.py

#!/bin/env python
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

導入tab模塊

>>> import tab
>>> import os
>>> os.                                             #已經支持tab功能了
Display all 249 possibilities? (y or n)
os.EX_CANTCREAT             os.ST_NOSUID                os._spawnvef(               os.getlogin(                os.seteuid(
os.EX_CONFIG                os.ST_RDONLY                os.abort(                   os.getpgid(                 os.setgid(
os.EX_DATAERR               os.ST_RELATIME              os.access(                  os.getpgrp(                 os.setgroups(
os.EX_IOERR                 os.ST_SYNCHRONOUS           os.altsep                   os.getpid(                  os.setpgid(

能夠調用shell命令

>>> os.system('ip r')
default via 192.168.1.1 dev wlp3s0  proto static  metric 1024 
192.168.1.0/24 dev wlp3s0  proto kernel  scope link  src 192.168.1.120 
192.168.122.0/24 dev virbr0  proto kernel  scope link  src 192.168.122.1