from PIL import Image, ImageFilter, ImageOps        img = Image.open('C:\\Users\\hengli\\Pictures\\lovewallpaper\\214926-106.jpg')        def dodge(a, b, alpha):            return min(int(a*255/(256-b*alpha)), 255)        def draw(img, blur=25, alpha=1.0):            img1 = img.convert('L')        #图片转换成灰色            img2 = img1.copy()            img2 = ImageOps.invert(img2)            for i in range(blur):          #模糊度                img2 = img2.filter(ImageFilter.BLUR)            width, height = img1.size            for x in range(width):                for y in range(height):                    a = img1.getpixel((x, y))                    b = img2.getpixel((x, y))                    img1.putpixel((x, y), dodge(a, b, alpha))            img1.show()            #img1.save('C:\\Users\\hengli\\Pictures\\CameraMan\\照片1.png')        draw(img)