running two functions by threading

[Fathy]

Hi
I'm trying to play two function at same time but one of this two function works only one time

import threading, time, sys





class counter :
    
    def num(self):
        for i in range (60):
            print(i)
            time.sleep(.5)

    def handler(self):
        print(' Processing .. ')
        time.sleep(3)





th1 = threading.Thread(target = counter().num).start()
th2 = threading.Thread(target = counter().handler).start()