1.安装c语言编译和构建工具
yum install gcc
2.从python官网上找到python3.6.5的链接
wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz
3.把下载的文件解压缩,解压缩之后文件名为Python-3.6.5.tar
gunzip Python-3.6.5.tgz
4.把文件解归档
tar -xvf Python-3.6.5.tar
5.安装构建过程中可能需要用到的依赖库
yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
6.进入python源代码目录，执行配置并生成Makefile （构建文件）
进入python源代码目录：cd Python-3.6.5
./configure --prefix=/usr/local/python36 --enable-optimizations
7.构建和安装
make && make install
8.创建软链接（快捷方式）
ln -s /usr/local/python36/bin/python3.6 /usr/bin/python3
ln -s /usr/local/python36/bin/pip3 /usr/bin/pip3
ln -s /usr/local/python36/bin/2to3-3.6 /usr/bin/2to3
9.检查是否安装成功
python3 --version
10.更新pip包管理工具
python3 -m pip install -U pip