reqww

from PIL import Image
from io import BytesIO
from django.core.files.uploadedfile import InMemoryUploadedFile

def save_image(output, name, format):
    return InMemoryUploadedFile(
            output, 
            'ImageField', 
            "%s.jpg" % name.split('.')[0], 
            f'image/{format}',
            sys.getsizeof(output), 
            None
        )


def image_save(self, *args, **kwargs):
        im2 = Image.open(self.avatar)
        im2 = im2.resize((50, 50))
        try:
            im2.save(output, format='JPEG', quality=100)
            format = 'jpeg'
        except OSError:
            im2.save(output, format='PNG', quality=100)
            format = 'png'
        output.seek(0)
        self.small_avatar = save_image(output, self.avatar.name, format)

from django.db.models import Sum

Order.objects.all().aggregate(Sum('count'))