1. Enable virtualevn using command 'soure bin/activate'
  2. Then try the command 'echo $PATH' to show it's path. Then it will show the path with like given below
     /var/path/virtauanenv/bin
  3. Go the the package folder which you want to install. Then use the below command
     /home/user/package/folder$ /var/path/virtauanenv/bin/python setup.py install