安装依赖

yum -y groupinstall "Development tools"  
yum -y install zlib-devel openssl-devel # 比较重要的包（不装的话，python3.7+ 会报错）  
yum install libffi-devel -y

下载

wget https://www.python.org/ftp/python/3.7.1/Python-3.7.1.tar.xz 

解压安装

tar -xvJf Python-3.7.1.tar.xz
cd Python-3.x.x 
./configure --prefix=/usr/local/bin/python3 
sudo make 
sudo make install

创建软链接

sudo ln -s /usr/local/bin/python3/bin/python3 /usr/bin/python3   
sudo ln -s /usr/local/bin/python3/bin/pip3 /usr/bin/pip3