python 自动拉起进程脚本

cat /usr/local/ssdb/moniter_ssdb.py
#!/usr/bin/env python
import os
import sys
import commands

#ssdb port
Precosslist = ('','','','','','','',
'','','','','','','',
'','','','','','')

for port in Precosslist:
        acd = "ps -ef|grep friend_" + port + "|grep -v grep"
        (status,output) = commands.getstatusoutput(acd)

        if status == 256:
                ssdb_file1 = "rm /data/ssdb/friend_" + port + "/var/ssdb.pid -rf"
                ssdb_file2 = "cd /usr/local/ssdb;./ssdb-server -d /data/ssdb/friend_" + port + "/ssdb_friend_" + port + ".conf -s start"
                (status,output) = commands.getstatusoutput(ssdb_file1)
                (status,output) = commands.getstatusoutput(ssdb_file2)