Problems with nose tests with hierarchy of directories

[marcelcaraciolo]

We are facing problems with the hierarchy structure of directories when running the python test.py

So if we have:

crab
   crab/
      __init__.py.
      ...
      test.py

Running python test.py from crab/crab we get several errors in the tests.

However renaming the first directory to another name we get:

recsys/
     crab/
         __init__.py
         ...
        test.py

Running python test.py from recsys/crab we have success in the tests.

Investigate the problem why we are facing those errrors.