1.获取编译包：
注意请先安装依赖

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

wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz

2.解压：

tar -zxvf Python-3.6.4.tgz

3.移动到安装目录

mv Python-3.6.4 /usr/local

4.进入目录：

cd /usr/local/Python-3.6.4

5.编译安装：

./configure
make
make install

6.软链接：

ln -s /usr/local/bin/python3.6 /usr/bin/python3

大功告成：

python3 -V