给我用python写一个超级玛丽

很高兴能接到您的问题！为您提供代码如下：

import pygame

pygame.init()

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

# 设置窗口标题
pygame.display.set_caption("Super Mario")

# 加载图片
bg_img = pygame.image.load("bg.png")
mario_img = pygame.image.load("mario.png")
mushroom_img = pygame.image.load("mushroom.png")

# 设置初始位置和速度
mario_x, mario_y = 50, 450
mario_vel = 5

mushroom_x, mushroom_y = 700, 450
mushroom_vel = 3

# 游戏循环
finished = False
while not finished:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            finished = True

    # 绘制背景和角色
    screen.blit(bg_img, (0, 0))
    screen.blit(mario_img, (mario_x, mario_y))
    screen.blit(mushroom_img, (mushroom_x, mushroom_y))

    # 判断是否按下键盘
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        mario_x -= mario_vel
    if keys[pygame.K_RIGHT]:
        mario_x += mario_vel

    # 蘑菇移动
    if mushroom_x <= 0 or mushroom_x >= 750:
        mushroom_vel = -mushroom_vel
    mushroom_x -= mushroom_vel

    # 判断是否碰撞
    if mario_x + 50 >= mushroom_x and mario_x <= mushroom_x + 50:
        if mario_y + 50 >= mushroom_y and mario_y <= mushroom_y + 50:
            mushroom_x = 700
            mushroom_y = 450

    # 更新窗口
    pygame.display.update()

pygame.quit()

希望这个小游戏能让您玩得开心！如果还有其它问题，欢迎随时跟我交流哦！