NameError: name PositiveSmallIntegerField is not defined - django

Question

Django 1.5 & Python 3.2.3, on Ubuntu 12.04.
Very odd error when trying to syncdb my DB. I've got some fields that don't look wrong but Django's spitting out this error message when I run python3 manage.py sqlall..
NameError: name 'PositiveSmallIntegerField' is not defined
Huh? I tried Googling this, but there's not a single thing about it anywhere. So I'm guessing I've made some stupid mistake but I can't see it. My models.py looks like this:
from django.db import models
class Song(models.Model):
own = models.BooleanField(default=True)
heard = models.DateTimeField(blank=True,null=True)
release_date = models.DateField(blank=True,null=True)
style = models.CharField(max_length=255,blank=True,null=True)
artist = models.CharField(max_length=255,blank=True,null=True)
featuring = models.CharField(max_length=255,blank=True,null=True)
title = models.CharField(max_length=255,blank=True,null=True)
listen = models.URLField(max_length=255,blank=True,null=True)
highest_chart_pos = models.PositiveSmallIntegerField()
note = models.TextField(blank=True,null=True)
That's all there is to it, and I copy-n-pasted PositiveSmallIntegerField straight from the Django documentation so I know there isn't a typo in it that I'm overlooking. So, how is PositiveSmallIntegerField not defined?

Answer 1

Throwing this in here because I found myself with the same error, creating a model for a
song, too!
from django.db import models
class Track(models.Model):
release = models.ForeignKey('Release', on_delete=models.CASCADE)
position = models.PositiveSmallIntegerField()
number = PositiveSmallIntegerField()
name = models.CharField(max_length=100)
length = models.DurationField()
There is a slight difference, here. I left out the namespace of models. before my PositiveSmallIntegerField. It looks like you didn't do that, above, but maybe someone else with a similar error will made my mistake, too.
Here was my stacktrace:
(env) Cam#cambook:~/Sites/juke% python manage.py makemigrations playlists
Traceback (most recent call last):
File "manage.py", line 15, in <module>
execute_from_command_line(sys.argv)
File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/core/management/__init__.py", line 371, in execute_from_command_line
utility.execute()
File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/core/management/__init__.py", line 347, in execute
django.setup()
File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
apps.populate(settings.INSTALLED_APPS)
File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/apps/registry.py", line 112, in populate
app_config.import_models()
File "/Users/Cam/Sites/juke/env/lib/python3.6/site-packages/django/apps/config.py", line 198, in import_models
self.models_module = import_module(models_module_name)
File "/usr/local/Cellar/python/3.6.5_1/Frameworks/Python.framework/Versions/3.6/lib/python3.6/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/Users/Cam/Sites/juke/playlists/models.py", line 60, in <module>
class Track(models.Model):
File "/Users/Cam/Sites/juke/playlists/models.py", line 63, in Track
number = PositiveSmallIntegerField()
NameError: name 'PositiveSmallIntegerField' is not defined