Linux安装python3

[root@sujx ~]# python3 -V
Python 3.6.8

yum下载

yum install gcc patch libffi-devel python-devel  zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel -y

解压

wget https://www.python.org/ftp/python/3.6.7/Python-3.6.7.tar.xz
xz -d Python-3.6.7.tar.xz
tar -xf Python-3.6.7.tar

编译且安装

./configure --prefix=/opt/python3/
make && make install

配置环境变量

在/etc/profile最后一行添加
export PATH=/opt/python3/bin:$PATH
然后
source /etc/profile