Signals registration

Best place for Django signals is app/signals.py file. This snippet imports signal modules from all installed apps.

from importlib import import_module
from django.conf import settings

for app in settings.INSTALLED_APPS:
    try:
        import_module( 'signals', app)
    except ImportError as e:
        print 'Failed to import "%s", reason: %s' % (app, str(e)))

Original: http://djangosnippets.org/snippets/2561/