new_contents: #!/usr/bin/env python
  """
  
  source: https://github.com/carljm/django-model-utils/blob/f8a7c50/runtests.py
  
  """
  import os
  import sys
  
  from django.conf import settings
  import django
  
  
  DEFAULT_SETTINGS = dict(
      INSTALLED_APPS=(
          'lu_dj_utils',
          ),
      DATABASES={
          'default': {
              'ENGINE': 'django.db.backends.sqlite3',
              }
          },
      SILENCED_SYSTEM_CHECKS=[
          '1_7.W001',  # MIDDLEWARE_CLASSES is not set
      ],
  )
  
  
  def runtests():
      if not settings.configured:
          settings.configure(**DEFAULT_SETTINGS)
  
      # Compatibility with Django 1.7's stricter initialization
      if hasattr(django, 'setup'):
          django.setup()
  
      parent = os.path.dirname(os.path.abspath(__file__))
      sys.path.insert(0, parent)
  
      try:
          from django.test.runner import DiscoverRunner
          runner_class = DiscoverRunner
          test_args = ['tests']
      except ImportError:
          from django.test.simple import DjangoTestSuiteRunner
          runner_class = DjangoTestSuiteRunner
          test_args = ['tests']
  
      failures = runner_class(
          verbosity=1, interactive=True, failfast=False).run_tests(test_args)
      sys.exit(failures)
  
  
  if __name__ == '__main__':
      runtests()
  
subject: add script `runtests`