text: import tkinter
  
  TIMER = 0
  FONT = "Times New Roman"
  
  def count_up():
      global TIMER
      TIMER += 1
      label["text"] = TIMER
      root.after(1000, count_up)    # 1초 후, count_up함수를 재실행
  
  if __name__ == "__main__":
      root = tkinter.Tk()
  
      label = tkinter.Label(font=(FONT, 80))
      label.pack()
  
      root.after(1000, count_up)
      root.mainloop()
  