php call python

<?php

//$command = escapeshellcmd('/usr/bin/python2.7 /home/admin/web/li1704-102.members.linode.com/public_html/grabcutLab.py');
$command = escapeshellcmd('/usr/bin/python2.7 ./grabcutLab.py');
$output = shell_exec($command);
echo $output;

?>