Q:

Python relative imports

Right, 
I have a structure like so:
/Project
    __init__.py
    script_a.py
    /tests
        __init__.py
        test_something.py

When test_something tries to import using from .  import script_a it returns the error Attempted relative import in non-package. 
I've put in the empty __init__.py files and added /Project to PYTHONPATH but it still throws up this error! 
Any ideas? 
EDIT:
I have now used a tester.py situated in \Project and call:
import script_a
from tests.test_something import *

Now it works!! 

A:

When test_something tries to import using from .  import script_a it returns the error Attempted relative import in non-package. 

Using one dot .  will lead you to the current directory.  You should use two dots .. to get to the parent dir. 
You cannot run a module with a relative import itself.  You can only import it.  So test_something.py can only run as an import but it is not possible to run the script as __main__

