websocketd exiting a persistent program

gistfile1.py

import signal
from sys import stdin, stdout
import time

def clean_exit():
  # do whatever is required to clean up, then
  exit()

if __name__ == "__main__":
    signal.signal(signal.SIGINT, clean_exit)
    signal.signal(signal.SIGTERM, clean_exit)
    
    while True:
        try:
            # do productive stuff in this loop
            # time.sleep() is here just to make a runnable program for demonstration
            time.sleep(1)
        except KeyboardInterrupt:
            clean_exit()