Question

Is there a way of listing all python modules directly underneath a specified model in the hierarchy?

I’ve got a Django web-app that is slowly growing, and I’ve re-organised it based on this article:

http://paltman.com/2008/01/29/breaking-apart-models-in-django/

However, I’m trying to improve on his technique by making use of introspection in the module initialization file (__ init __.py) in order to auto-detect all instances of the Django model class in the subordinate jobs. I’ve got this sort of got this working, but it still needs a static list of modules in the tree above it to work.

In case people are interested, here’s what my solution looks like:

from django.db.models.base import ModelBase
from sys import modules

moduleList = ['TechTree', 'PilotAbilities']
__all__ = []

for moduleName in moduleList:
  fullyQualifiedModuleName = '%s.%s' % (__name__, moduleName)
  moduleObj = __import__(fullyQualifiedModuleName)

  __all__ += [item for item in dir(moduleObj) if isinstance(getattr(moduleObj, item), ModelBase)]

Answer 1

Well, you can get os.path.dirname(parent.__file__), and then glob.glob() or os.walk() and look for other init.py files.