import threading
import multiprocessing as mp
import os
import time
import sys
def fun():
    pid = os.getpid()
    while True:
        print(pid)
        time.sleep(5)

if __name__ == '__main__':
    p = threading.Thread(target=fun)
    # p = mp.Process(target=fun)
    p.start()
    print(1)
    sys.exit()