How to stop/terminate a python script from running? (once again)

Question

Context :

I have a running python script. It contains many os.system("./executableNane") calls in a loop.

If I press ctrl + C , it just stops the execution of the current ./executableNane and passes to the next one.

Question :

How to stop the execution of the whole script and not only the execution of the current executable called?

Please note that I have read carefully the question/answer here but even with kill I can kill the executable executableNane but not the whole script (that I cannot find using top ).

The only way I have to stop the script (without reboot the system) is to continue to press ctrl + C in a loop as well until all the tests are completed.

Answer 1

You can use subprocess and signal handlers to do this. You can also use subprocess to receive and send information via subprocess.PIPE , which you can read more about in the documentation.

The following should be a basic example of what you are looking to do:

import subprocess
import signal
import sys

def signal_handler(sig, frame):
    print("You pressed Ctrl+C, stopping.")
    print("Signal: {}".format(sig))
    print("Frame: {}".format(frame))

    sys.exit(123)

# Set up signal handler
signal.signal(signal.SIGINT, signal_handler)

print("Starting.")
while True:
    cmd = ['sleep', '10']
    p = subprocess.Popen(cmd)
    p.wait()
    if p.returncode != 0:
        print("Command failed.")
    else:
        print("Command worked.")

Answer 2

The other solution to the question (by @Quillan Kaseman) is much more elegant compared with the solution I have found. All my problems are solved when I press Ctrl + Z instead of Ctrl + C .

Indeed, I have no idea why with Z works and with C does not. (I will try to look for some details later on).