* zacherates <[EMAIL PROTECTED]> [2007-07-04 12:09:03]: > > How should I handle these kind of commands (ping 127.0.0.1) with > > subprocess module. I am using subprocess, instead of os.system because > > at anypoint in time, I need access to stdout and stderr of execution. > > Ping, for one, allows you to set an upper bound on how long it runs > (the -c option). This is probably the cleanest approach if it's > available. >
Yes, I am aware of the ping -c option. But again even that does not help. try process = subprocess.Popen('ping -c 10 127.0.0.1', stdin=subprocess.PIPE, shell=True) process.stdout.read() # This will hang again. I am not sure, why subprocess is behaving so. > You can also send the subprocess signals if you need it to exit > (although, this is a unix thing so I'm not sure how portable it is). Yes, I have tried to kill and then get the standard output result. But the result has been the same. I could not read the Popen returned file object. > You could emulate having a timeout on child.stdout.read by registering > a callback with Timer to kill the child. I dont know how to do this. I shall give it a try ( by looking around ) and trying. -- O.R.Senthil Kumaran http://uthcode.sarovar.org -- http://mail.python.org/mailman/listinfo/python-list