centos7安装python3

1、安装依赖

• yum -y install python-devel openssl-devel bzip2-devel zlib-devel expat-devel ncurses-devel sqlite-devel gdbm-devel xz-devel tk-devel readline-devel gcc

• yum -y groupinstall "Development tools"

　　如上两步，汇总安装了python生产环境的各种第三方依赖包

2、设置163源

　　下面网址按照步骤配置源

　　http://mirrors.163.com/.help/centos.html

3、安装python

　　root用户不用加sudo

　　sudo yum install python3

　　更新pip

　　pip3 install --upgrade pip