主要是使用python3写的脚本，目前机器中默认使用的是python2，如果强行覆盖安装，则最直接的yum就无法使用了。
一、安装依赖包
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
二、下载python包
https://www.python.org/downloads/
wget https://www.python.org/ftp/python/3.6.6/Python-3.6.6.tgz
三、创建安装目录
mkdir /usr/local/python3
四、解压并安装
tar xf Python-3.6.6.tgz cd Python-3.6.6/ ./configure --prefix=/usr/local/python3 make && make install
五、创建软链接
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
六、验证
# python -V Python 2.7.5 # python3 -V Python 3.6.6 # pip3 -V pip 10.0.1 from /usr/local/python3/lib/python3.6/site-packages/pip (python 3.6)