import time
import multiprocessing


def a():
    while True:
        print('a')
        time.sleep(1)

def b():
    while True:
        print('b')
        time.sleep(1)


if __name__ == '__main__':
    process_a = multiprocessing.Process(target=a)
    process_b = multiprocessing.Process(target=b)
    
    process_a.start()
    process_b.start()
    
    process_a.join()
    process_b.join()



#print("Hello, Pi Pico W!")