python tab补全模块

安装readline模块

[root@zabbix-server ~]# pip install readline

编写补全模块内容

查看模块内容：
版本一
[root@zabbix-server ~]# cat tab.py

#!/usr/bin/env python
# _*_ coding:utf-8 _*_
# __created by junxi__

# The script is used by python tab Completion script
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')        # linux下使用这行内容
# histfile = os.path.join(os.environ['HOMEPATH'], '.pythonhistory')   # win10下使用这行内容
try:
    readline.read_history_file(histfile)
except IOError:
    pass
# atexit.register(readline.write_history_file, histfile)
# del histfile

版本二
[root@zabbix-server ~]# cat tab.py

#!/usr/bin/env python
# _*_ coding:utf-8 _*_
# __created by junxi__

# The script is used by python tab Completion script

import readline,rlcompleter

### Indenting
class TabCompleter(rlcompleter.Completer):
    """Completer that supports indenting"""
    def complete(self, text, state):
        if not text:
            return ('    ', None)[state]
        else:
            return rlcompleter.Completer.complete(self, text, state)

readline.set_completer(TabCompleter().complete)

### Add autocompletion
if 'libedit' in readline.__doc__:
    readline.parse_and_bind("bind -e")
    readline.parse_and_bind("bind '\t' rl_complete")
else:
    readline.parse_and_bind("tab: complete")

### Add history
import os
histfile = os.path.join(os.environ["HOME"], ".pyhist")
try:
    readline.read_history_file(histfile)
except IOError:
    pass
import atexit
atexit.register(readline.write_history_file, histfile)
del histfile

查看python默认可以查找到的包目录（就是默认可以import 模块的路径）

[root@zabbix-server ~]# python
Python 2.7.5 (default, Nov  6 2016, 00:28:07)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/usr/lib/python2.7/site-packages/pip-9.0.1-py2.7.egg', '/usr/lib64/python27.zip', '/usr/lib64/python2.7', '/usr/lib64/python2.7/plat-linux2', '/usr/lib64/python2.7/lib-tk', '/usr/lib64/python2.7/lib-old', '/usr/lib64/python2.7/lib-dynload', '/usr/lib64/python2.7/site-packages', '/usr/lib64/python2.7/site-packages/gtk-2.0', '/usr/lib/python2.7/site-packages']

把tab.py移动到sys.path查看的目录中的一个即可

[root@zabbix-server ~]# mv tab.py /usr/lib/python2.7/site-packages

测试结果（使用tab补全每次都要先导入tab.py补全模块）

[root@zabbix-server ~]# python
Python 2.7.5 (default, Nov  6 2016, 00:28:07) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import tab
>>> import os
>>> os.
Display all 249 possibilities? (y or n)
os.EX_CANTCREAT             os.__package__              os.listdir(
os.EX_CONFIG                os.__reduce__(              os.lseek(
os.EX_DATAERR               os.__reduce_ex__(           os.lstat(
os.EX_IOERR                 os.__repr__(                os.major(
os.EX_NOHOST                os.__setattr__(             os.makedev(
os.EX_NOINPUT               os.__sizeof__(              os.makedirs(
os.EX_NOPERM                os.__str__(                 os.minor(

ok