CentOS 7下yum安装python2
- 下载epel
sudo yum install epel-release - 安装python2
sudo yum install python python2-devel（python2-pip）
CentOS 7下yum安装python3
- 下载epel
sudo yum install epel-release - 安装python3
sudo yum install python3 python3-devel（python3-pip）
更改默认python（可选）
whereis python
python: /usr/bin/python2.7 /usr/bin/python /usr/bin/python3.4 /usr/bin/python3.4m /usr/lib/python2.7 /usr/lib/python3.4 /usr/lib64/python2.7 /usr/lib64/python3.4 /etc/python /usr/include/python2.7 /usr/include/python3.4m /usr/share/man/man1/python.1.gz
cd /usr/bin/
rm /usr/bin/python
ln -s /usr/bin/python3.4 usr/python/python