python <tab>自动补全

[python] 

[~$]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

 

[python]  

#!/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

 

[plain]  

[/usr/lib/python2.7$]cd   

[~$]vi .bashrc   

 

 

4. 增加环境变量

 

[plain] 

#for python  

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

 

5.配置环境变量生效

[plain]  

[~$]source .bashrc   

 

 

PYTHONSTARTUP是什么东西呢？

[plain]  

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.