linux下安装python3

linux下安装python3

1. 官网https://www.python.org/downloads/下载python3源码
2. mkdir /usr/local/python3 新建python3安装目录
3. ./configure –prefix=/usr/local/python3 设置python3安装目录
4. make 编译
5. make install 安装
6. PATH=$PATH:/usr/local/python3/bin 设置python3环境变量，即时生效，重启后失效
7. 修改/etc/profile，添加PATH=$PATH:/usr/local/python3/bin 设置python3环境变量，重启后永久生效

8. 输入python3即可直接运行

   备注：echo $PATH命令可查看当前的环境变量