python学习-进程通讯

主进程文件

#!/usr/bin/python
# -*- coding: utf-8 -*-

import subprocess, time
subproc = subprocess.Popen(['python', 'sub.py'], stdin=subprocess.PIPE, shell=False)   #运行子进程B
time.sleep(0.5)
print "start"

print '11111111111111111'
subproc.stdin.write("data\n")
print '22222222222222'
subproc.communicate('data222\n')
time.sleep(10)
print 'end'

子进程文件

#!/usr/bin/python
# -*- coding: utf-8 -*-
#从stdin读字符串并打印之。
import sys
print 'receive...'
s = sys.stdin.readline()
print 'get:', len(s), s

s = sys.stdin.readline()
print 'get:', len(s), s