import_cards.py 文件源码

def get_or_create(self, model, field, value, **kwargs):
        """
        Retrieves object of class `model` with lookup key `value` from the cache. If not found,
        creates the object based on `field=value` and any other `kwargs`.

        Returns a tuple of `(object, created)`, where `created` is a boolean specifying whether an
        `object` was created.
        """
        result = self[model].get(value)
        created = False
        if not result:
            kwargs[field] = value
            result = model.objects.create(**kwargs)
            self[model][value] = result
            created = True
        return result, created