text: import threading
  import time
  
  def client_thread(word, sec):
      while True:
          print(word)
          time.sleep(sec)
  
  thread_A = threading.Thread(target=client_thread, args=('A', 1))
  thread_B = threading.Thread(target=client_thread, args=('B', 1.5))
  thread_C = threading.Thread(target=client_thread, args=('C', 2))
  
  thread_A.start()
  thread_B.start()
  thread_C.start()