Doing a Django ORM save without triggering signals.

gistfile1.py

        def non_signal_save(obj, **kwargs):
            obj.__class__.objects.filter(pk=obj.pk).update(**kwargs)

# e.g. non_signal_save(blogpost, modified=hour_ago)

Useful if you have something like this:

@receiver(models.signals.pre_save, sender=BlogPost)
def update_modified(sender, instance, raw, *args, **kwargs):
    if raw:
        return
    instance.modified = now()

Fixed typo.