yum install python-virtualenv
virtualenv --python=/usr/bin/python2.7 env2.7
[root@VM_0_10_centos env2.7]# pwd
/root/gw/python/env2.7
[root@VM_0_10_centos env2.7]# source bin/activate
(env2.7) [root@VM_0_10_centos env2.7]# deactivate
yum install python-virtualenv
virtualenv --python=/usr/bin/python2.7 env2.7
[root@VM_0_10_centos env2.7]# pwd
/root/gw/python/env2.7
[root@VM_0_10_centos env2.7]# source bin/activate
(env2.7) [root@VM_0_10_centos env2.7]# deactivate
class MetaCls(type): def __new__(cls, *args, **kwargs): print("in MetaCls") # return super(Meta