Linux 下安装 Python3
Linux CentOS 7 安装 Python3：
[root@localhost ~]$ yum install -y epel-release [root@localhost ~]$ yum install -y python36 [root@localhost ~]$ yum install -y python36-pip [root@localhost ~]$ yum install -y python36-devel [root@localhost ~]$ pip3.6 install ipython