Centos下实现安装Python3.6和Python2共存

# 下载
 wget https://www.python.org/ftp/python/3.6.3/Python-3.6.3.tgz
# 解压
tar -zxvf Python-3.6.3.tgz
 
cd Python-3.6.3

[root@localhost ~]# ./configure prefix=/usr/local/python3 --enable-optimizations
 
[root@localhost ~]# make && make install 

[root@localhost ~]# which python
/usr/bin/python

[root@localhost ~]# mv /usr/bin/python /usr/bin/python.bak
/usr/bin/python

[root@localhost ~]# ln -s /usr/local/python3/bin/python3 /usr/bin/python

[root@localhost ~]# python -V
Python 3.6.3
[root@localhost ~]# python2.6 -V
Python 2.6.6

[root@localhost ~]# vim /usr/bin/yum

#!/usr/bin/python2.6