scala VS python2 操作shell对比例子

Scala：

/**
 * Created by sunxu on 2015/9/30.
 */

import scala.sys.process._
import java.io.File

//在相应目录执行shell命令，返回值赋值给变量
val exitValue = Process("hadoop jar pathread-analytics-0.0.1.jar com.duxiu.pathread.stcs.StcsByFieldJob /pathread/2015/10-08 /user/sunxu/test ssid 13671489", new File("/opt/users/sunxu/")).!

println("--------------------------------------------------------")

if (exitValue == 0) {

  val listInfo = "sh /opt/users/sunxu/test.sh" !!

  println(listInfo)
}

Python：

__author__ = 'sunxu'

import subprocess

cmd = "hadoop jar pathread-analytics-0.0.1.jar com.duxiu.pathread.stcs.StcsByFieldJob /pathread/2015/09-29 /user/sunxu/test ssid 13210904"
hadoopCmd = subprocess.Popen(cmd.split(" "), stdout=subprocess.PIPE)
#print hadoopCmd.communicate() 运行这句下边的调用会报错,file stream is closed
print '-------------------------------------'
msgInfo = subprocess.Popen(["grep","ssid"], stdin=hadoopCmd.stdout,stdout=subprocess.PIPE)
output = msgInfo.communicate()
print output