python tab补全功能

编写文件tab.py
vim tab.py

#!/usr/bin/python
# python tab 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

把其放入模块默认存储路径里
如下：

>>> import sys
>>> sys.path
['', '/usr/local/lib/python36.zip', '/usr/local/lib/python3.6', '/usr/local/lib/        python3.6/lib-dynload', '/usr/local/lib/python3.6/site-packages']

mv tab.py /usr/local/lib/python3.6/site-packages
把文件放在 /usr/local/lib/python3.6/site-packages 下面
后面就可以使用tab键补全功能了

[root@izuf65ylvdo8oui0t2l08oz site-packages]# python3
Python 3.6.0 (default, Jan  4 2018, 13:50:19)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import time
>>> s=time.localtime()
>>> s.
s.count(             s.n_unnamed_fields   s.tm_mday            s.tm_wday
s.index(             s.tm_gmtoff          s.tm_min             s.tm_yday
s.n_fields           s.tm_hour            s.tm_mon             s.tm_year
s.n_sequence_fields  s.tm_isdst           s.tm_sec             s.tm_zone
>>> s.