python命令行添加自動補全和命令歷史功能

# python startup file
import readline
import rlcompleter
import atexit
import os
# tab completion
readline.parse_and_bind('tab: complete')
# history file
# win
histfile = os.path.join(os.environ['HOMEPATH'], '.pythonhistory')
# linux
histfile = os.path.join(os.environ['HOME'], '.pythonhistory')
try:
    readline.read_history_file(histfile)
except IOError:
    pass
atexit.register(readline.write_history_file, histfile)
del os, histfile, readline, rlcompleter

將以上文件保存為.pythonstartup並存放在用戶的主目錄下，window放在C:\Users\Administrator下，linux放在/root或者/home/xxx目錄下，然后設置環境變量

linux中export PYTHONSTARTUP=~/.pythonstartup

windows中一樣，打開控制面板\系統和安全\系統,高級系統設置，環境變量，新建系統變量，變量名為PYTHONSTARTUP，變量值為之前的文件

python3中需要安裝pyreadline，pip install pyreadline

 linux和window中需要修改下HOME,HOMEPATH