Pygame draw.rect 2d对象阵列黑屏

import pygame

# 初始化Pygame
pygame.init()

# 设置屏幕尺寸
screen_width, screen_height = 800, 600
screen = pygame.display.set_mode((screen_width, screen_height))

# 设置颜色
red = (255, 0, 0)

# 矩形阵列参数
rect_width, rect_height = 50, 50
rows, cols = 10, 10

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

    # 填充背景色
    screen.fill((0, 0, 0))

    # 绘制矩形阵列
    for row in range(rows):
        for col in range(cols):
            x = col * rect_width
            y = row * rect_height
            pygame.draw.rect(screen, red, (x, y, rect_width, rect_height))

    # 更新屏幕显示
    pygame.display.flip()

# 退出Pygame
pygame.quit()