Answers for "how to import django built in user model"

import user in django

>>> from django.contrib.auth.models import User
>>> user = User.objects.create_user('john', '[email protected]', 'johnpassword')

# At this point, user is a User object that has already been saved
# to the database. You can continue to change its attributes
# if you want to change other fields.
>>> user.last_name = 'Lennon'
>>> user.save()

Django Custom User Model

./manage.py shell
>>>
>>> from django.contrib.admin.models import LogEntry
>>> from django.contrib.contenttypes.models import ContentType
>>>
>>> auth_user = ContentType.objects.get(app_label='auth', model='user')
>>> accouts_user = ContentType.objects.get(app_label='Accounts', model='user')
>>>
>>> for le in LogEntry.objects.filter(content_type=auth_user):
...     le.content_type = accouts_user
...     le.save()
...