terminator.py

import time
import subprocess
import contextlib

@contextlib.contextmanager
def TerminatingPopen(*args, **kw):
    p = subprocess.Popen(*args, **kw)
    try:
        yield p
    finally:
        print("exterminate", p.poll())
        p.kill() # The harshest way to end the subprocess
        print("exterminated?", p.poll())

if __name__ == '__main__':
    with TerminatingPopen(["sleep", "60"]) as p:
        print(p)
        time.sleep(2)
        1/0