有没有办法用pygame把我自己的图片画成一个圈？

import pygame
import math

# 初始化Pygame
pygame.init()

# 设置窗口尺寸
width, height = 500, 500
screen = pygame.display.set_mode((width, height))

# 加载图片
image = pygame.image.load("your_image.png")

# 设置圆心坐标和半径
center_x, center_y = width // 2, height // 2
radius = min(center_x, center_y) - 10

# 创建一个与窗口大小相同的表面
surface = pygame.Surface((width, height))

# 填充表面为透明色
surface.fill((0, 0, 0, 0))

# 绘制圆形
pygame.draw.circle(surface, (255, 255, 255), (center_x, center_y), radius)

# 将图片绘制到表面上
image_rect = image.get_rect(center=(center_x, center_y))
surface.blit(image, image_rect)

# 将表面绘制到屏幕上
screen.blit(surface, (0, 0))

# 更新屏幕显示
pygame.display.flip()

# 游戏循环
running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

# 退出Pygame
pygame.quit()