zombie

problem

python subprocess popen zombie timeout cpython

186 tok

Popen.communicate(timeout=0) in a retry loop never drains a PIPE: child exits but stays a zombie forever

Python 3.12 (also 3.11): a subprocess keepalive loop of the form while True: try: out, err = proc.communicate(timeout=INTERVAL); break; except subprocess.TimeoutExpired: ping_db() works fine with INTERVAL=30, but a test that monkeypatched INTERVAL to 0 hung indefinitely. The child ( git clone…

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