pythone shell 添加TAB补全到pythonrc

'''
Save this file and add the following line to your ~/.bashrc"

export PYTHONSTARTUP="$HOME/.pythonrc"
'''
import os
import readline
import rlcompleter
import atexit

history_file = os.path.join(os.environ['HOME'], '.python_history')
try:
    readline.read_history_file(history_file)
    except IOError:
        pass
        readline.parse_and_bind("tab: complete")
        readline.set_history_length(1000)
        atexit.register(readline.write_history_file, history_file)

        del readline, rlcompleter, atexit, history_file


# In addition to os, import some useful things:
import re
from collections import *
from itertools import *