python v3.3.2中使用subprocess模块与其它程序进行管道通信

下面是python脚本sup.py：

import subprocess

p = subprocess.Popen("test.exe", stdin = subprocess.PIPE,stdout = subprocess.PIPE, stderr = subprocess.PIPE, universal_newlines=True,shell = 

False)
p.stdin.write('5\n')
p.stdin.write('3\n')
print(p.stdout.read())import subprocess

p =