Python, How to terminate a "shell=True" subprocess after execution

Question

I am executing the following command in a python script:

#! /usr/bin/python

import shlex
import os
import subprocess
import string
import random
import signal



pro = subprocess.Popen("zcat production_dump_2013-09-16_12-00.sql.gz | PGPASSWORD=everything psql -d voylla_solr -h localhost -p 5432 -U nishant", shell=True)
pro.wait()
os.kill(pro.pid, signal.SIGTERM)

This gives me:

OSError: [Errno 3] No such process

I also tried using

pro = subprocess.Popen("zcat production_dump_2013-09-16_12-00.sql.gz | PGPASSWORD=everything psql -d voylla_solr -h localhost -p 5432 -U nishant", shell=True)
pro.wait()
pro.kill()

and this gives me:

OSError: [Errno 3] No such process

How do I kill the process after execution to execute next commands

Thomas Orozco · Accepted Answer · 2013-09-16 10:49:50Z

1

Popen.wait waits for the process to terminate, so there is nothing left to kill once it returns.

Once a process exits, you're not supposed to "kill it". The only thing you're supposed to do is collect its return code, which Popen.wait does for you.

answered Sep 16, 2013 at 10:49

Thomas Orozco

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