# 官网下载安装包
1. wget http://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz

# 解压 
2. tar -xvzf Python-3.6.4.tgz

# 安装
3. cd Python-3.6.4
4. ./configure --with-ssl

# 编译
5. sudo make
6. sudo make install

# 创建软连接，先查看python3.6.4的安装路径
7. which python3    # /usr/local/bin/python3
8. sudo  ln -s /usr/local/bin/python3 python