如何在python-pygame中添加背景图片

import pygame
import os

pygame.init()

screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))

background_image = pygame.image.load("背景图片路径")

background_image = pygame.transform.scale(background_image, (screen_width, screen_height))

running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
    
    screen.blit(background_image, (0, 0))
    pygame.display.flip()