如何在pygame中检测到控制器中的哪个特定按钮正在被释放

import pygame
import sys

pygame.init()
pygame.joystick.init()

joystick_count = pygame.joystick.get_count()
if joystick_count == 0:
    print("未检测到控制器")
    sys.exit()
else:
    joystick = pygame.joystick.Joystick(0)
    joystick.init()

button_count = joystick.get_numbuttons()

button_state = [False] * button_count

while True:
    for event in pygame.event.get():
        if event.type == pygame.JOYBUTTONDOWN:
            button_state[event.button] = True
        elif event.type == pygame.JOYBUTTONUP:
            button_state[event.button] = False

if not button_state[0]:
    print("第一个按钮被释放")