如何通过按某个键盘键来关闭tkinter主循环

import tkinter as tk

root = tk.Tk()

def close_main_loop(event):
    root.quit()

root.bind('<KeyPress>', close_main_loop)

root.mainloop()

import tkinter as tk

def close_main_loop(event):
    root.quit()

root = tk.Tk()
root.bind('<KeyPress>', close_main_loop)
root.mainloop()