python执行子进程 进程间通信

python执行子进程 进程间通信

a.py

import subprocess, time
subproc = subprocess.Popen(['c:\python31\python.exe', 'c:/b.py'], stdin=subprocess.PIPE, shell=True)   
time.sleep(0.5)
print('start')
subproc.stdin.write('data\n')
subproc.communicate('data\n')
print('end')

b.py

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