python 自动补全

1.获取python目录【我使用的是64位ubuntu系统】

 

[~$]python

Python 2.7.3 (default, Apr 10 2013, 06:20:15) 

[GCC 4.6.3] on linux2

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

>>> import sys

>>> sys.path

['', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', 

'/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', 

'/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0',

'/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/ubuntuone-client', 

'/usr/lib/python2.7/dist-packages/ubuntuone-control-panel', '/usr/lib/python2.7/dist-packages/ubuntuone-couch', 

'/usr/lib/python2.7/dist-packages/ubuntuone-installer', '/usr/lib/python2.7/dist-packages/ubuntuone-storage-protocol']

>>> 

从上面看出python在我电脑上的路径是  /usr/lib/python2.7

 

2.切换至该目录写个startup.py的脚本,脚本目录就是处理python中<tab>事件，脚本内容如下

 

#!/usr/bin/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

 

 

3.切换至自己主目录

 

[/usr/lib/python2.7$]cd 

[~$]vi .bashrc 

 

 

4. 增加环境变量

 

#for python

export PYTHONSTARTUP=/usr/lib/python2.7/startup.py

 

5.配置环境变量生效

 

[~$]source .bashrc 

 

PYTHONSTARTUP是什么东西呢？

 

If this is the name of a readable file, the Python commands in that file are executed before the first prompt 

is displayed in interactive mode.  The file is executed in the same name space where interactive commands are

executed so that  objects defined  or  imported in it can be used without qualification in the interactive session.  

You can also change the prompts sys.ps1 and sys.ps2 in this file.