python下雪的圣诞树

以下是使用Python绘制下雪的圣诞树的示例代码：

import pygame
import random

# 初始化pygame
pygame.init()

# 设置屏幕尺寸
screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("Snowy Christmas Tree")

# 加载圣诞树图片
tree_image = pygame.image.load("christmas_tree.png")
tree_rect = tree_image.get_rect()
tree_rect.centerx = screen_width // 2
tree_rect.bottom = screen_height - 20

# 加载雪花图片
snowflake_image = pygame.image.load("snowflake.png")
snowflakes = []

# 游戏主循环
running = True
while running:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # 绘制背景
    screen.fill((0, 0, 0))
    screen.blit(tree_image, tree_rect)

    # 生成雪花
    if len(snowflakes) < 100:
        x = random.randint(0, screen_width)
        y = random.randint(0, screen_height)
        speed = random.randint(1, 3)
        snowflakes.append([x, y, speed])

    # 移动和绘制雪花
    for snowflake in snowflakes:
        snowflake[1] += snowflake[2]
        if snowflake[1] > screen_height:
            snowflakes.remove(snowflake)
        screen.blit(snowflake_image, (snowflake[0], snowflake[1]))

    # 更新屏幕
    pygame.display.flip()

# 退出游戏
pygame.quit()

请确保在运行代码之前，将圣诞树图片和雪花图片准备好，并将其文件名分别替换为"christmas_tree.png"和"snowflake.png"。