Python之Tab键自动补全

首先备份一下Tab键自动补全代码：

 # python start 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)

然后拷贝到Python系统目录下 sudo cp tab.py /usr/lib/python2.7/dist-packages/ ，这样就不用每次进入都还得导入啦

才发现，只有Python2.7以及Python3才有 /usr/lib/python2./dist-packages/ 这个目录，Python3.5没有，至于该放哪，我也不知道