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
下载源码
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