On Wed, Dec 15 2021 at 09:38:48 PM, Jason <elect...@emypeople.net> wrote: > Hello, > > How can I find out the exit code of a process when using the > subprocess module? I am passing an email message to a shell script and > I need to know whether the shell script threw an error. > > Here is my code: > p = Popen(cmd, stdout=None, stdin=PIPE, stderr=None) > p.communicate(input=msg) > > I tried something like this: > e_stat = p.communicate(input=msg) > > but the value of e_stat is always '(None, None)' >
You want to look at p.returncode after communicate returns: https://docs.python.org/3/library/subprocess.html#subprocess.Popen.returncode https://docs.python.org/3/library/subprocess.html#subprocess.Popen.communicate returns a tuple with the stdout and stderr contents. -- regards, kushal -- https://mail.python.org/mailman/listinfo/python-list
