Resolve error in Django querySet.get

QuerySet.get.py

from django.utils.timezone import now
from django.db.models import QuerySet

...

class RepairedQuerySet(QuerySet):
    def get(self, *args, **kwargs):
        timer = now()
        try:
            iterator = self.filter(*args, **kwargs)[:2].iterator()
            instance = next(iterator, None)
            if instance is None or next(iterator, None):
                return super().get(*args, **kwargs)
            return instance
        finally:
            print('overriden get', now() - timer)