1.下載python源碼包Python-3.6.3.tgz
2.下載python3編譯的依賴包
yum install -y 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
3.解壓python源碼包
tar -zxvf Python-3.6.3.tgz -C 解壓路徑
4.創建python的安裝目錄
mkdir /opt/python36
5.進入源碼包文件夾
6.配置
輸入命令./configure --prefix=/opt/python36
7.編譯
輸入命令make
8.安裝
輸入命令make install
9.進入python安裝目錄下的bin文件夾，可以看到安裝好的python shell
10.打開配置文件/etc/profile，將python的bin目錄加入環境變量，然后重載配置文件或重啟
11.輸入命令python3.6，即可啟動python3.6交互界面
更詳細的步驟，可參考：https://www.cnblogs.com/knighterrant/p/10719887.html