Certain directory structure causes nose test to fail

[Drachenfels]

I have detected that if you have following structure of files:

<ROOT>
|
| - tests/test_main.py
| - app/task/__init__.py
| - app/tools/__init__.py
| - app/tools/setup.py
| - app/tools/something/__init__.py

All files are empty except task that imports setup like that from app.tools import setup.

Run nosetests 1.3.7 from root directory, without any extra parameter with python either 2.7.x and 3.5.x and you will get following exception:

TypeError: Attribute setup of <module 'app.tools' from '/home/dariuszwiatrak/Projects/nose-bug/app/tools/__init__.py'> is not a python function. Only functions or callables may be used as fixtures.

Fun fact if you rename setup into something else it works, if you stop importing setup in task/init.py it works and finally if you remove app/tools/something/__init__.py it works.

I have created repository with a bug, clone it and run nosetest to observe it:

https://github.com/Drachenfels/nose-bug/tree/master

[walter2]

Using nose-exclude on the module with the setup.py is a temporary work around:

nosetests --exclude-dir=app/tools