django directory structure of module for commands

in django 1.6, I have a commands for make analysis over the database, with a set of functions.

├── management
│   ├── __init__.py
│   └── commands
│       ├── __init__.py
│       ├── analysis.py

I like break the analysis.py in a set of files (maybe a module ...). what is the correct directory structure for a module use for a django command ?

maybe like this ... ?

├── management
│   ├── __init__.py
│   ├── analysis_module
│   └── commands
│       ├── __init__.py
│       ├── analysis.py

and the test for the analysis_module, what is the correct ubication for the test of analysis_module ?

a option, put the code modude out of django project

├── analysis_module
├── test
├── django_project
│   ├── app
│   │   ├── __init__.py
│   │   ├── admin.py
│   │   ├── management
│   │   │   ├── __init__.py
│   │   │   └── commands
│   │   │       ├── __init__.py
│   │   │       └── analysis.py
│   │   ├── models.py
│   │   ├── tests.py
│   │   ├── urls.pyc
│   │   └── views.py
│   └── django_proyect
│       ├── __init__.py
│       ├── settings.py
│       ├── urls.py
│       └── wsgi.py

but for this, I need add the module to path to the sys.path maybe in manage.py

# manage.py
sys.path.append(os.path.abspath(__file__ + '/../../'))

and import from the analysis command

# analysis.py
import analysis_module

with this I can put the test for analysis_module separately.