Python with django is giving problem when migrating a template

  

C: \ Program Files Python \ mysite> python manage.py makemigrations polls   Traceback (most recent call last):     File "manage.py", line 22, in       execute_from_command_line (sys.argv)     File "C: \ Python27 \ lib \ site-packages \ django \ core \ management__init __. Py", line 363, in execute_from_command_line       utility.execute ()     File "C: \ Python27 \ lib \ site-packages \ django \ core \ management__init __. Py", line 337, in execute       django.setup ()     File "C: \ Python27 \ lib \ site-packages \ django__init __. Py", line 27, in setup       apps.populate (settings.INSTALLED_APPS)     File "C: \ Python27 \ lib \ site-packages \ django \ apps \ registry.py", line 108, in populate       app_config.import_models ()     File "C: \ Python27 \ lib \ site-packages \ django \ apps \ config.py", line 202, in import_models       self.models_module = import_module (models_module_name)     File "C: \ Python27 \ lib \ importlib__init __. Py", line 37, in import_module        import (name)     File "C: \ Python27 \ lib \ site-packages \ django \ contrib \ auth \ models.py", line 4, in       from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager     File "C: \ Python27 \ lib \ site-packages \ django \ contrib \ auth \ base_user.py", line 52, in       class AbstractBaseUser (models.Model):     File "C: \ Python27 \ lib \ site-packages \ django \ db \ models \ base.py", line 124, in new       new_class.add_to_class ('_ meta', Options (meta, app_label))     File "C: \ Python27 \ lib \ site-packages \ django \ db \ models \ base.py", line 330, in add_to_class       value.contribute_to_class (cls, name)     File "C: \ Python27 \ lib \ site-packages \ django \ db \ models \ options.py", line 214, in contribute_to_class       self.db_table = truncate_name (self.db_table, connection.ops.max_name_length ())     File "C: \ Python27 \ lib \ site-packages \ django \ db__init __. Py", line 33, in getattr       return getattr (connections [DEFAULT_DB_ALIAS], item)     File "C: \ Python27 \ lib \ site-packages \ django \ db \ utils.py", line 212, in getitem       conn = backend.DatabaseWrapper (db, alias)     File "C: \ Python27 \ lib \ site-packages \ sqlserver_ado \ base.py", line 184, in init       super (DatabaseWrapper, self). init (* args, ** kwargs)     C: \ Python27 \ lib \ site-packages \ django \ db \ backends \ base \ base.py ", line 97, in init       self.creation = self.creation_class (self)   TypeError: Error when calling the metaclass bases       'NoneType' object is not callable

When issuing this error can it be a problem with the connection?

Below the database settings I'm using Django and the template I edited from polls .

settings.py

DATABASES = {
    'default': {
        'NAME': 'MS_PYTHON',
        'ENGINE': 'sqlserver_ado',
        'HOST': 'UDILAN-PC\SQLEXPRESS',
        'USER': 'sa',
        'PASSWORD': 'vorlon',
        'PORT': '',
        'OPTIONS': {
            'provider': 'SQLOLEDB',
            'use_mars': True,
            }
    }
}

models.py

# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.db import models

# Create your models here.

class Question(models.Model):
    question_text = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')

class Choice(models.Model):
    question = models.ForeignKey(Question, on_delete=models.CASCADE)
    choice_text = models.CharField(max_length=200)
    votes = models.IntegerField(default=0)