Linux python 自動補全

為Python添加交互模式下TAB自動補全以及命令歷史功能。

1.獲取python目錄

[root@localhost ~]# python
Python 2.6.6 (r266:84292, Jul 23 2015, 15:22:56) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/usr/lib/python2.6/site-packages/paramiko-1.7.7.1-py2.6.egg', '/usr/lib64/python26.zip', '/usr/lib64/python2.6', '/usr/lib64/python2.6/plat-linux2', '/usr/lib64/python2.6/lib-tk', '/usr/lib64/python2.6/lib-old', '/usr/lib64/python2.6/lib-dynload', '/usr/lib64/python2.6/site-packages', '/usr/lib64/python2.6/site-packages/gst-0.10', '/usr/lib64/python2.6/site-packages/gtk-2.0', '/usr/lib64/python2.6/site-packages/webkit-1.0', '/usr/lib/python2.6/site-packages', '/usr/lib/python2.6/site-packages/setuptools-0.6c11-py2.6.egg-info']
>>> 

從上面看出python在我系統上的路徑是  /usr/lib/python2.6/site-packages

2.切換至該目錄寫個tab.py的腳本,腳本目錄就是處理python中<tab>事件，腳本內容如下

 [root@localhost]# cd /usr/lib/python2.6/site-packages

[root@localhost python2.6/]# vim tab.py

#!/usr/bin/python
# python tab 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

3.切換至自己主目錄

[root@localhost python2.6]# cd 
[root@localhost  ~]# vim .bashrc 

4. 增加環境變量

export PYTHONSTARTUP=/usr/lib/python2.6/site-packages/tab.py 　

5.配置環境變量生效

[root@localhost ~]# source .bashrc