如何将字符串绘制成图像？

from PIL import Image, ImageDraw, ImageFont

def draw_text(text, font_path, font_size, output_path):
    # 创建空白图像，设置背景色为白色
    img_width = 200
    img_height = 100
    background_color = (255, 255, 255)
    image = Image.new("RGB", (img_width, img_height), background_color)
    
    # 创建绘图对象
    draw = ImageDraw.Draw(image)
    
    # 设置字体和字号
    font = ImageFont.truetype(font_path, font_size)
    
    # 计算文本绘制位置使其居中
    text_width, text_height = draw.textsize(text, font=font)
    x = (img_width - text_width) // 2
    y = (img_height - text_height) // 2
    
    # 绘制文本
    text_color = (0, 0, 0)
    draw.text((x, y), text, font=font, fill=text_color)
    
    # 保存图像
    image.save(output_path)

# 调用函数生成图像
text = "Hello, World!"
font_path = "arial.ttf"  # 字体文件路径
font_size = 24
output_path = "text_image.png"
draw_text(text, font_path, font_size, output_path)