首先备份一下Tab键自动补全代码：
1 # python start file 2 import sys 3 import readline 4 import rlcompleter 5 import atexit 6 import os 7 8 # tab completion 9 readline.parse_and_bind('tab: complete') 10 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)
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/python2.7/dist-packages/ 这个目录，Python3.5没有，至于该放哪，我也不知道