记一次安装python3.8的过程
参考文档地址：https://www.cnblogs.com/knighterrant/p/10719887.html
python下载地址：https://www.python.org/downloads/source/
注:CentOS8默认安装的python版本为3.6.8
1.下载python3.8源码包
wget https://www.python.org/ftp/python/3.8.3/Python-3.8.3rc1.tgz
2.解压缩源码包
tar -zxvf Python-3.8.3rc1.tgz
3.进入源码包文件
cd python3.8
4.编译安装
./configure --prefix=/opt/python3.8 # 指定安装目录为/opt/python3.8
make && make install
5.更改linux的path变量，添加python3
/etc/profile # 系统环境变量配置文件
vim /etc/profile
PATH=/opt/python3.8/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin
6.重载配置文件/etc/profile
source /etc/profile
7.进入pyhon3