一、windows中python tab具体如下：

1.python3环境装好后，初始环境是没有装readline模块的，先装它。

pip install pyreadline

2.在在python的根目录下加上tab模块脚本，如下：

#!/usr/bin/python
# python tab 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[ 'HOMEPATH' ], '.pythonhistory' )
try :
readline.read_history_file(histfile)
except IOError:
pass
atexit.register(readline.write_history_file, histfile)

del os, histfile, readline, rlcompleter

后面就可以用了：

#####################################################################################

二、linux 中python tab具体如下：

1.先安装python，随便先下个3版本

wget https://www.python.org/ftp/python/3.6.7/Python-3.6.7.tar.xz

xz -d Python-3.6.7.tar.xz

tar -xf Python-3.6.7.tar

2.装一些环境包，顺便装下readline

yum install gcc patch libffi-devel python-devel  zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel -y

3.编译安装

cd /opt/Python-3.6.7
./configure --prefix=/opt/python
make && make install

4.添加环境变量

将export PATH=$PATH:/opt/python/bin 添加到/etc/profile,再sour'ce下

5.再cd /opt/python/lib/python3.6 添加tab.py文件

#!/usr/bin/python
# python tab 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

6.搞定，试下结果

可以补全了。