How to terminate a python subprocess launched with shell=True

Question

I\'m launching a subprocess with the following command:

p = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)

However, when I try t

Answer 1

I have not seen this mentioned here, so I am putting it out there in case someone needs it. If all you want to do is to make sure that your subprocess terminates successfully, you could put it in a context manager. For example, I wanted my standard printer to print an out image and using the context manager ensured that the subprocess terminated.

import subprocess

with open(filename,'rb') as f:
    img=f.read()
with subprocess.Popen("/usr/bin/lpr", stdin=subprocess.PIPE) as lpr:
    lpr.stdin.write(img)
print('Printed image...')

I believe this method is also cross-platform.