import threading
import time

num_threads = 4

def thread_message(message):
    global num_threads
    num_threads -= 1
    print('Komunikat: %s\n' %message)

while num_threads > 0:
    print("Wątek nr %s" %num_threads)
    threading.Thread(target=thread_message("Wątek nr %s" %num_threads)).start()
    time.sleep(0.1)