如何在python中获取一个区域中所有像素的颜色

from PIL import Image

def get_pixel_colors(image_path, x_start, y_start, width, height):
    image = Image.open(image_path)
    pixels = image.load()

    colors = []
    for y in range(y_start, y_start + height):
        for x in range(x_start, x_start + width):
            color = pixels[x, y]
            colors.append(color)

    return colors

# 示例用法
image_path = "path/to/image.jpg"
x_start = 100
y_start = 100
width = 200
height = 200

pixel_colors = get_pixel_colors(image_path, x_start, y_start, width, height)
print(pixel_colors)