Django：上传前调整图片大小

from PIL import Imagefrom io import BytesIOfrom django.core.files.base import ContentFilefrom resizeimage import resizeimageclass SomeModel(models.Model):    image = models.ImageField(upload_to=your_get_file_path_callback)    def save(self, *args, **kwargs):        pil_image_obj = Image.open(self.image)        new_image = resizeimage.resize_width(pil_image_obj, 100)        new_image_io = BytesIO()        new_image.save(new_image_io, format='JPEG')        temp_name = self.image.name        self.image.delete(save=False)          self.image.save( temp_name, content=ContentFile(new_image_io.getvalue()), save=False        )        super(SomeModel, self).save(*args, **kwargs)