#!/usr/bin/env python # # Copyright 2007 Doug Hellmann. # # # All Rights Reserved # # Permission to use, copy, modify, and distribute this software and # its documentation for any purpose and without fee is hereby # granted, provided that the above copyright notice appear in all # copies and that both that copyright notice and this permission # notice appear in supporting documentation, and that the name of Doug # Hellmann not be used in advertising or publicity pertaining to # distribution of the software without specific, written prior # permission. # # DOUG HELLMANN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, # INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN # NO EVENT SHALL DOUG HELLMANN BE LIABLE FOR ANY SPECIAL, INDIRECT OR # CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS # OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, # NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN # CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. # """More interaction between child processes. """ __module_id__ = "$Id$" #end_pymotw_header import subprocess print 'One line at a time:' proc = subprocess.Popen('python repeater.py', shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, ) for i in range(10): proc.stdin.write('%d\n' % i) output = proc.stdout.readline() print output.rstrip() remainder = proc.communicate()[0] print remainder print print 'All output at once:' proc = subprocess.Popen('python repeater.py', shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, ) for i in range(10): proc.stdin.write('%d\n' % i) output = proc.communicate()[0] print output