python Popen使用

最新推荐文章于 2024-09-28 08:00:00 发布

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本文介绍了一个使用Python脚本从Redis数据库中读取特定内容签名对应数据的方法。该脚本通过命令行与一个名为DIRedisWriter2的进程交互，发送内容签名以获取相关数据，并处理返回结果。

#encoding:utf-8

#author:liudapeng
#description: read redis result according to contSign
#date:2015/01/19

import os
import sys
import json
import Queue
import threading
import subprocess
from subprocess import *
import inspect
import time

if __name__ == "__main__":
shellCommand = '''cd {0} && ./DIRedisWriter 2>/dev/null'''.format('./')
process = Popen(['/bin/bash', '-c', shellCommand], stdin=PIPE, stdout=PIPE, stderr = sys.stderr)
for line in sys.stdin:
try:
contentSign = line.rstrip("\r\n")
cmd = '''read\t101\t{0}\n'''.format(contentSign)
process.stdin.write(cmd)
while True:
result = process.stdout.readline()
result = result.strip("\r\n")
if result == "end":
break
else:
if result != "NORESULT":
print result
else:
print "0"+"\t"+contentSign+"\t"+"NOURLMD5"
except Exception,e:
print e
pass
if process != None :
process.kill()
process = None