Python tab键补全

Python装完是不能用tab来补全的，我们需要将脚本放到python指定的目录下，可以使用sys.path来查看一下目录

>>> import sys

>>> sys.path

['', '/usr/local/python2.7.10/lib/python27.zip', '/usr/local/python2.7.10/lib/python2.7', '/usr/local/python2.7.10/lib/python2.7/plat-linux2', '/usr/local/python2.7.10/lib/python2.7/lib-tk', '/usr/local/python2.7.10/lib/python2.7/lib-old', '/usr/local/python2.7.10/lib/python2.7/lib-dynload', '/usr/local/python2.7.10/lib/python2.7/site-packages']

一般我们会将这一类代码放在/usr/local/xxxxx/lib/python2.7/dist-packages目录下

[root@python ~]# cd /usr/local/python2.7.10/lib/python2.7/site-packages

[root@python site-packages]# vi tab.py

#!/usr/bin/env 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

[root@python site-packages]# python

Python 2.7.10 (default, Dec  4 2015, 23:46:26) 

[GCC 4.4.7 20120313 (Red Hat 4.4.7-16)] on linux2

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

>>> import tab

>>> import sys

>>> sys.

sys.__class__(              sys.__reduce_ex__(          sys.argv                    sys.exit(                   sys.hexversion              sys.py3kwarning

sys.__delattr__(            sys.__repr__(               sys.builtin_module_names    sys.exitfunc(               sys.long_info               sys.setcheckinterval(

sys.__dict__                sys.__setattr__(            sys.byteorder               sys.flags                   sys.maxint                  sys.setdlopenflags(

sys.__displayhook__(        sys.__sizeof__(             sys.call_tracing(           sys.float_info              sys.maxsize                 sys.setprofile(