Question

what’s wrong with my imports?

App folder structure:

myapp/

• models/models.py contains SpotModel()
• tests/tests.py contains TestSpotModel(unittest.TestCase). tests.py imports from myapp.models.models import * which works like a charm
• scripts/import.py contains from myapp.models.models import *

the problem is that import.py when executed results in an error:

ImportError: No module named myapp.models.models

but tests.py runs.

I have __init__.py files in myapp/__init__.py, myapp/models/__init__.py, myapp/tests/__init__.py and as mentioned, running the unit tests using nosetests works as intended.

Answer 1

It is __init__.py not init.py. Make sure each of the directory in hierarchy contains it in order to be able to import.

EDIT: I managed to reproduce it.
Here’s the directory structure:

cesar@cesar-laptop:/tmp/asdasd$ tree
.
`-- myapp
    |-- __init__.py
    |-- models
    |   |-- __init__.py
    |   `-- models.py
    |-- scripts
    |   |-- data.py
    |   `-- __init__.py
    `-- tests
        |-- __init__.py
        `-- tests.py

I put the following code at the very beginning of the data.py to narrow down the problem:

import sys
import pprint

pprint.pprint(sys.path)

from myapp.models.models import *

Running the data.py the way OP indicated yeilds ImportError:

cesar@cesar-laptop:/tmp/asdasd$ python myapp/scripts/data.py
['/tmp/asdasd/myapp/scripts',
 '/usr/lib/python2.6',
 '/usr/lib/python2.6/plat-linux2',
 '/usr/lib/python2.6/lib-tk',
 -- Skipped --
'/usr/local/lib/python2.6/dist-packages']
Traceback (most recent call last):
  File "myapp/scripts/data.py", line 6, in 
    from myapp.models.models import *
ImportError: No module named myapp.models.models

But this way works like a charm:

cesar@cesar-laptop:/tmp/asdasd$ python -m myapp.scripts.data
['',
 '/usr/lib/python2.6',
 '/usr/lib/python2.6/plat-linux2',
 '/usr/lib/python2.6/lib-tk',
 -- Skipped --
'/usr/local/lib/python2.6/dist-packages']

Note the difference in the first entry of sys.path.