test.py

from django.core.management.commands.test import Command as DjangoTestCommand


class Command(DjangoTestCommand):
    def add_arguments(self, parser):
        super(Command, self).add_arguments(parser)
        parser.add_argument(
            '--local_test_settings', action='store',
            dest='local_test_settings',
            help=('Overrides the default local test setting file path. '
                  'The default value is "local_settings_example.py" in '
                  'project root. Note that local settings for production '
                  '("local_settings.py") is not allowed to be used '
                  'for unit tests for security reason.')
        )

    def handle(self, *test_labels, **options):
        del options['local_test_settings']
        super(Command, self).handle(*test_labels, **options)