Python Interpreter Auto Completion

In linux bash, and django ./manage.py shell, double click TAB key would get auto completion. However, the default python interpreter has no such function, but fortunately, this could be added with steps next:

vim /usr/lib/python2.7/site-packages/tab.py

import readline
import rlcompleter
import atexit
import os

readline.parse_and_bind('tab:complete')

histfile = os.path.join(os.environ['HOME'],'.pythonhistory')
try:
    readline.read_history_file(histfile)
except IOError:
    pass
atexit.register(readline.write_history_file, histfile)

Then import tab module, TAB key well be valid.

~]# python

Python 2.7.5

......

>>> import tab

>>> ...