On Tue, Dec 21, 2010 at 5:53 PM, Jonathan Hayward <
christos.jonathan.hayw...@gmail.com> wrote:
> [jhayw...@cmlnxbld01 invdb]$ python manage.py shell
> Python 2.7 (r27:82500, Dec 2 2010, 14:06:29)
> [GCC 4.2.4] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> (InteractiveConsole)
> >>> import models
> Traceback (most recent call last):
> File "<console>", line 1, in <module>
> File "/home/jhayward/invdb/models.py", line 50, in <module>
> class architecture(models.Model):
> File
> "/tools/python/2.7/Linux_x86_64/lib/python2.7/site-packages/django/db/models/base.py",
> line 48, in __new__
> kwargs = {"app_label": model_module.__name__.split('.')[-2]}
> IndexError: list index out of range
> >>>
>
> What is going on in this error message?
>
The "English" translation is "list index out of range".
As to what causes it, I'd guess that model_module.__name__ has not '.' in
it, so the split returns a list of one item, and -2 is then an illegal
index.
This would seem to be because your models.py is in the same directory as
your manage.py (and presumably settings.py), thus your ability to try and
import it as just "import models". Looking at the base.py code, it really
expects a models.py file to be in a package (an app package, whose name this
code is trying to figure out), and fails when it is not.
The fix, if all this is true, is to create a sub folder for your "app", put
the models.py (and views.py and maybe forms.py, admin.py, app specific
urls.py) in that folder, allong with a (probably empty) file called
__init__.py (that's two underscores before and two after, the word init).
The name of this folder becomes your app name, e.g.; "my_app". Then you
would retry your experiment by typing "import my_app.models".
>
> It occurred after I went through and added docstrings, __str__(), and
> __unicode__() methods; I get the same error, referring to the same class,
> when I go through and comment out the docstring and __str__() and
> __unicode__() methods.
>
> What are the likely causes, and what can I do to fix this?
>
> --
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