php调用python

<?php
$program="/usr/bin/python ./a.py "; #注意使用绝对路径
$g='b';
$p=exec($program.$g);echo $p;

pythond文件:

#!usr/bin/env python
import sys
def gg(a):
	return a


if __name__ == '__main__':
    a = sys.argv[1]
    if a:
        T = gg(a)
        print "aaaaabbbb"
        print T