multiprocessing - checking status of process with subprocess.Popen in Python

Question

If I invoke a process with subprocess.Popen in Python as follows:

myproc = subprocess.Popen(...).communicate()

what is the correct way to see its status? Not its output to stdout or stderr, but its exit status once it's finished (e.g. 0 for success or another for failure)?

Answer 1

returncode is indeed the answer, but the solution doesn't need to be complicated.

process = subprocess.Popen(...)
stdoutdata, stderrdata = process.communicate()
print process.returncode

More info in the Python subprocess docs.