Centos7安装Python3 一、安装Python3 检查当前系统中存在的python环境 python --version 安装python依赖环境 yum -y install libffi-devel zlib zlib-dev zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel libffi libffi-devel gcc gcc-c++