如何在pygame中清除窗口中的文本

import pygame
from pygame.locals import *

# 初始化pygame
pygame.init()

# 设置窗口大小和标题
window_size = (800, 600)
window_title = "Clear Text in Pygame"
window = pygame.display.set_mode(window_size)
pygame.display.set_caption(window_title)

# 定义绘制文本的函数
def draw_text(text, font, color, surface, x, y):
    text_obj = font.render(text, True, color)
    text_rect = text_obj.get_rect()
    text_rect.topleft = (x, y)
    surface.blit(text_obj, text_rect)

# 创建字体对象
font = pygame.font.Font(None, 36)

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

    # 填充窗口背景色
    window.fill((255, 255, 255))

    # 绘制文本
    draw_text("Hello, World!", font, (0, 0, 0), window, 100, 100)

    # 更新窗口显示
    pygame.display.update()

# 退出pygame
pygame.quit()