allows for setting settings with --settings

manage.py

#!/usr/bin/env python
import os
import site
import sys

ROOT = os.path.dirname(os.path.abspath(__file__))
path = lambda *a: os.path.join(ROOT,*a)


# Adjust the python path and put local packages in front.
prev_sys_path = list(sys.path)

site.addsitedir(path('apps'))
site.addsitedir(path('lib'))

# Local (project) vendor library
site.addsitedir(path('vendor-local'))
site.addsitedir(path('vendor-local/lib/python'))

# Global (upstream) vendor library
site.addsitedir(path('vendor'))
site.addsitedir(path('vendor/lib/python'))


# Move the new items to the front of sys.path. (via virtualenv)
new_sys_path = []
for item in list(sys.path):
    if item not in prev_sys_path:
        new_sys_path.append(item)
        sys.path.remove(item)
sys.path[:0] = new_sys_path

#from django.core.management import execute_manager, setup_environ
from django.core.management import execute_manager


#try:
#    import settings_local as settings
#except ImportError:
#    try:
#        import settings
#    except ImportError:
#        import sys
#        sys.stderr.write(
#            "Error: Tried importing 'settings_local.py' and 'settings.py' "
#            "but neither could be found (or they're throwing an ImportError)."
#            " Please come back and try again later.")
#        raise
import settings

# If we want to use django settings anywhere, we need to set up the required
# environment variables.
#setup_environ(settings)

# Configure Celery
import djcelery
djcelery.setup_loader()


if __name__ == "__main__":
    execute_manager(settings)

    # Monkey-patch django forms to avoid having to use Jinja2's |safe everywhere.
    import safe_django_forms
    safe_django_forms.monkeypatch()