import _threadimport timedef print_time(threadName, delay, iterations):    start = int(time.time())    for i in range(0,iterations):        time.sleep(delay)        seconds_elapsed = str(int(time.time()) - start)        print (threadName if threadName else seconds_elapsed)try:    _thread.start_new_thread(print_time, (None, 1, 10))    _thread.start_new_thread(print_time, ("Fizz", 3, 3))    _thread.start_new_thread(print_time, ("Buzz", 5, 3))except:    print ("Error: unable to start thread")while 1:    pass

demo2

import _threadimport timedef print_time(threadName, delay, iterations):    start = int(time.time())    for i in range(0,iterations):        time.sleep(delay)        seconds_elapsed = str(int(time.time()) - start)        print (threadName if threadName else seconds_elapsed)try:    _thread.start_new_thread(print_time, (None, 1, 10))    _thread.start_new_thread(print_time, ("Fizz", 3, 3))    _thread.start_new_thread(print_time, ("Buzz", 5, 3))except:    print ("Error: unable to start thread")print("complete!")