python tab键自动补齐命令

操作步骤：

        一：安装readline

                yum -y install readline

        二：vim ~/.pythonstartup.py

                

# python startup file 
import sys
import readline
import rlcompleter
import atexit
import os
# tab completion 
readline.parse_and_bind('tab: complete')
# history file 
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

 

 

        三：写入环境变量里

                vim ~/.bash_profile

                        export PYTHONSTARTUP=~/.pythonstartup.py

 

        四：载入.bash_profile

                        source ~/.bash_profile