forms.py 文件源码

def generate_resized_image(source, size):
    img_l = Image.open(source)
    img_l.thumbnail(size, Image.ANTIALIAS)
    data_img = StringIO.StringIO()
    img_l.save(data_img, 'JPEG')
    img_l.close()
    img_temp_file = InMemoryUploadedFile(data_img, None,
                                         str(size[0]) + '.jpg', 'image/jpeg',
                                         data_img.len, None)
    return img_temp_file