根据关键字找进程id

#!/usr/bin/python
import subprocess
import sys
import logging
import os

gameproc = "jd_5.py"

def getPid(process):
    cmd = "ps aux| grep '%s'|grep -v grep " % process
    logging.info(cmd)
    out = subprocess.Popen(cmd,shell=True,stdout=subprocess.PIPE)
    infos = out.stdout.read().splitlines()
    pidlist = []
    if len(infos) >= 1:
        for i in infos:
            pid = i.split()[1]
            if pid not in pidlist:
                pidlist.append(pid)
        return [x.decode() for x in pidlist]
    else:
        return -1

pid = getPid(gameproc)
print(pid)