Yes. See the documentation:
from django.db.models.signals import post_save
instance = MyModel(field='qwerty')
post_save.send(MyModel, instance=instance, created=True)
Yes. See the documentation:
from django.db.models.signals import post_save
instance = MyModel(field='qwerty')
post_save.send(MyModel, instance=instance, created=True)
The requested URL was not found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.