[SOLVED] subprocess.check_output is too slow on script python but not in interactive python shell

Issue

My question is about subprocess.

I'm using subprocess to call an external program, I've used the check_output() method in which I pass args as list. what I've noticed is that when using check_output() from the interactive shell it takes 3 minutes (which is the correct time for executing the external program in my case [there is no problem if the process stays blocked waiting the response]) however when I'm using the same method with the same params in a python script it can take up to 1hour !.

Is there anyone who faced this situation before? any suggestion ?

For information I'm using Python3.7.3 on a Debian 10.

Thanks is advance

---- edit:

I've nothing special in my code

My script is just:

from subprocess import check_output
try:
    #commandList is the programm (external bin) I would excute with its params
    result = check_output(commandList) 
    print(result.decode("latin-1"))
except Exception as e:
    print(e)

Solution

Using subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess. STDOUT, shell=True) fixed the problem.

Answered By - user14341483

Answer Checked By - Terry (WPSolving Volunteer)