Python中的Tab补全功能添加

用 Python shell 没有 Tab 补全还是挺痛苦的，下面就记录一下如何补全：

1. 先准备一个 tab.py 的脚本。

　>>> tap.py

 1 #!/usr/bin/python
 2 # python tab file
 3   
 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   
19 del os, histfile, readline, rlcompleter

2. 查看Python默认的模块存放地址

1 Python 3.6.3 (v3.6.3:2c5fef8, Oct 3 2017, 18:22:56) [MSG v.1900 64 bit (AMD64)] on win32 
2 Type "help", "copyright", "credits" or "license" for more information.  
3 >>> import string   
4 >>> string .__file__  
5 'C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\string.py'

3. 拷贝该脚本到默认模块存放路径

　>>> 'C:\Users\Administrator\AppData\Local\Programs\Python\Python36\lib\'

4. 现在可以用了.hhhhhhhhhhh