Linux 树莓派 利用USB摄像头进行拍照

如题，提供一段最简单的代码，测试通过

import pygame
import pygame.camera
from pygame.locals import *

pygame.init()
pygame.camera.init()

camera = pygame.camera.Camera("/dev/video0",(640,480))
camera.start()
image = camera.get_image()
pygame.image.save(image,"image.png")
camera.stop()