<?php
$re = exec('python ceshi.py', $out);
// $re = iconv('gbk', 'utf-8', $re);
var_dump($out);
echo '<br/>';
var_dump($re);

ceshi.py

def send():
    data = '1,2,3,4,5'
    print(data)
if __name__ == '__main__':
    send()