在PyGame中尝试从列表到屏幕绘制多个矩形图像时出现类型错误

import pygame

# 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))

# 定义矩形列表
rectangles = [
    pygame.Rect(100, 100, 50, 50),
    pygame.Rect(200, 200, 100, 50),
    pygame.Rect(300, 300, 50, 100)
]

# 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

    # 清空屏幕
    screen.fill((255, 255, 255))

    # 绘制矩形
    for rect in rectangles:
        pygame.draw.rect(screen, (0, 0, 255), rect)

    # 更新屏幕
    pygame.display.flip()

# 退出PyGame
pygame.quit()