How can I kill multiple processes at once in python?

Question

I have a python script that is responsible for verifying the existence of a process with its respective name, I am using the pip module pgrep, the problem is that it does not allow me to kill the processes with the kill module of pip or with the of os.kill because there are several processes that I want to kill and these are saved in list, for example

pid = [2222, 4444, 6666]

How could you kill those processes at once? since the above modules don't give me results.

[os.kill(p,9) for p in pid].. this will kill one pid after another.. — Arun Kaliraja Baskaran, Aug 09 '20 at 05:44
No @ArunKalirajaBaskaran - write a `for` loop - see https://stackoverflow.com/questions/5753597/is-it-pythonic-to-use-list-comprehensions-for-just-side-effects — alani, Aug 09 '20 at 05:45
Can you show us the error or warning you are getting with `os.kill`? AFAIK, the python process doesnt have permissions to kill these processes. Also could you try killing with sudo (in linux) or administrator (in windows) user — tbhaxor, Aug 09 '20 at 06:00

alani · Answer 1 · 2020-08-09T06:03:37.983

You would loop over processes using a for loop. Ideally you should send a SIGTERM before resorting to SIGKILL, because it can allow processes to exit more gracefully.

import time
import os
import signal

# send all the processes a SIGTERM
for p in pid:
    os.kill(p, signal.SIGTERM)

# give them a short time to do any cleanup
time.sleep(2)

# in case still exist - send them a SIGKILL to definitively remove them
# if they are already exited, just ignore the error and carry on
for p in pid:
    try:
        os.kill(p, signal.SIGKILL)
    except ProcessLookupError:
        pass

score 0 · Answer 2 · answered Aug 09 '20 at 05:59

0

Try this it may work

processes = {'pro1', 'pro2', 'pro3'}
for proc in psutil.process_iter():  
    if proc.name() in processes:
       proc.kill()

For more information you can refer here

answered Aug 09 '20 at 05:59

Ujjwal Dash

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How can I kill multiple processes at once in python?

2 Answers2