Python: How to prevent subprocesses from receiving CTRL-C / Control-C / SIGINT

Question

I am currently working on a wrapper for a dedicated server running in the shell. The wrapper spawns the server process via subprocess and observes and reacts to its output.<

Answer 1

you can do something like this to make it work in windows and unix:

import subprocess
import sys

def pre_exec():
    # To ignore CTRL+C signal in the new process
    signal.signal(signal.SIGINT, signal.SIG_IGN)

if sys.platform.startswith('win'):
    #https://msdn.microsoft.com/en-us/library/windows/desktop/ms684863(v=vs.85).aspx
    #CREATE_NEW_PROCESS_GROUP=0x00000200 -> If this flag is specified, CTRL+C signals will be disabled
    my_sub_process=subprocess.Popen(["executable"], creationflags=0x00000200)
else:
    my_sub_process=subprocess.Popen(["executable"], preexec_fn = pre_exec)