1. 下载源代码并拷贝到系统，略
2. 解压缩源码包

tar zxvf Python-3.7.1.tgz

3. 安装编译依赖环境

yum install libffi-devel zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make -y

4. 进入源代码目录下，依次执行如下命令

cd /opt/Python-3.7.1
./configure prefix=/usr/local/python3
make && make install

5. 创建软连接

#添加python3的软链接
ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3

6. 查看一下版本

python3 -V

Python 3.7.1