1. 新建Python环境变量配置文件：

vim ~/.pystartup

# Add auto-completion and a stored history file of commands to your Python

# interactive interpreter. Requires Python 2.0+, readline. Autocomplete is

# bound to the Esc key by default (you can change it - see readline docs).

#

# Store the file in ~/.pystartup, and set an environment variable to point

# to it:  "export PYTHONSTARTUP=~/.pystartup" in bash.

import atexit

import os

import readline

import rlcompleter

readline.parse_and_bind('tab: complete')

historyPath = os.path.expanduser("~/.pyhistory")

def save_history(historyPath=historyPath):

    import readline

    readline.write_history_file(historyPath)

if os.path.exists(historyPath):

    readline.read_history_file(historyPath)

atexit.register(save_history)

del os, atexit, readline, rlcompleter, save_history, historyPath