unbtun python tab补全

在使用python的时候有时候总是忘记很多代码，这个是作为程序袁最头疼的事情，本人也是刚刚接触python，这几天也是用到这块，所以记录下来，已被需要时能够找到。

我的系统是：

 w@w:~$ uname -a
2 Linux w 4.2.0-16-generic #19-Ubuntu SMP Thu Oct 8 15:35:06 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

先看看自己的python安装路径，如果不知道的话可以根据下面的方法查看以下：

 w@w:~$ python
2 Python 2.7.10 (default, Oct 14 2015, 16:09:02) 
3 [GCC 5.2.1 20151010] on linux2
4 Type "help", "copyright", "credits" or "license" for more information.
5 >>> import sys
6 >>> sys.path
7 ['', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/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/PILcompat', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client']

既然找到了python的安装路径，把下面的代码传进去

 1 #!/usr/bin/python
 2 # python startup file
 3 import sys
 4 import readline
 5 import rlcompleter
 6 import atexit
 7 import os
 8 # tab completion
 9 readline.parse_and_bind('tab: complete')
10 # history file
11 histfile = os.path.join(os.environ['HOME'], '.pythonhistory')
12 try:
13     readline.read_history_file(histfile)
14 except IOError:
15     pass
16 atexit.register(readline.write_history_file, histfile)
17 del os, histfile, readline, rlcompleter

所传路径以及文件名称可以随意，但是在调用的时候要一致。但是文件必须传到python路径下：

 1 w@w:/usr/lib/python2.7/dist-packages$ vi tab.py 
 2 #!/usr/bin/python
 3 # python startup file
 4 import sys
 5 import readline
 6 import rlcompleter
 7 import atexit
 8 import os
 9 # tab completion
10 readline.parse_and_bind('tab: complete')
11 # history file
12 histfile = os.path.join(os.environ['HOME'], '.pythonhistory')
13 try:
14     readline.read_history_file(histfile)
15 except IOError:
16     pass
17 atexit.register(readline.write_history_file, histfile)
18 del os, histfile, readline, rlcompleter

我把文件传到/usr/lib/python2.7/dist-packages目录下，并且用tab.py命名。

 w@w:~$ vi .bashrc
2 #for python    
3 export PYTHONSTARTUP=/usr/lib/python2.7/dist-packages/tab.py
4 #上面的路径和文件名必须和上面的保持一致。
5 w@w:~$ source .bashrc #启用上面的环境