child = subprocess.Popen(command,
shell=True,
env=environment,
close_fds=True,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
bufsize=1,
)
subout = ""
with child.stdout:
for line in iter(child.stdout.readline, b''):
subout += line
logging.info(subout)
rc = child.wait()
some times (intermittently) this hangs forever.
not sure if it hangs on iter(child.stdout.readline)
or child.wait()
i ps -ef
for the process it Popens and that process no longer exists
my guess is that it has do with bufsize so that child.stdout.readline is going on forever but i have no idea how to test it and as this happens intermittently
I could implement alarm but i m not sure if that's appropriate as i cant really tell whether the popen'd process is just slow or hanging
let's assume that either child.stdout.readline or wait() hangs forever, what actions could i take besides alarm ?
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