[root
@localhost Downloads]# ls
python-3.6.0a1-macosx10.6.pkg Python-3.6.0a1.tar.xz
[root@localhost Downloads]# yum install python
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirrors.yun-idc.com
* extras: mirrors.yun-idc.com
* updates: mirrors.yun-idc.com
Package python-2.7.5-34.el7.x86_64 already installed and latest version
Nothing to do
好像是已经安装了Python2.7,这种情况下如何安装3.6或更新呢