python3 thread

import time
import threading

def proc():
    for i in range(0,5):
        time.sleep(1)
        print("count", i)

if __name__ == '__main__':
    th1 = threading.Thread(target=proc)
    th2 = threading.Thread(target=proc)
    th1.start()
    th2.start()
    while True:
      print("main loop")
      time.sleep(1)