Blog Job Engineering

>>> from django.db import models >>> class Poll(models.Model): ... question = models.CharField(max_length=200) ... pub_date = models.DateTimeField('date published') ... Traceback (most recent call last): File "", line 1, in File "D:\Python25\lib\site-packages\django\db\models\base.py", line 51, in __new__ kwargs = {"app_label": model_module.__name__.split('.')[-2]} IndexError: list index out of range Solution:

The model definition must come in an application - the error you're seeing there is that it tries to take the __name__ model_module - which should be something like project.appname.models for project\appname\models.py - and get the app name, appname. In the interactive console, the module's __name__ is '__main__' - so it fails.

To get around this, you'll need to specify the app_label yourself in the Meta class;

>>> from django.db import models
>>> class Poll(models.Model):
...     question = models.CharField(max_length=200)
...     pub_date = models.DateTimeField('date published')
...     class Meta:
...         app_label = 'test'

For explanation of why you can do that, look at that file mentioned in the traceback, D:\Python25\lib\site-packages\django\db\models\base.py:

    if getattr(meta, 'app_label', None) is None:
       # Figure out the app_label by looking one level up.
       # For 'django.contrib.sites.models', this would be 'sites'.
       model_module = sys.modules[new_class.__module__]
       kwargs = {"app_label": model_module.__name__.split('.')[-2]}
   else:
       kwargs = {}

(Where meta is the Meta class, see just above in that file.)

source = http://stackoverflow.com/questions/4382032/defining-a-model-class-in-django-shell-fails