$ cat conftest.py
import os

import django.conf


def pytest_configure():
  """Configure the right Django configuration settings if it hasn't already been done.

  Default to: twitter.xx.yy.settings.continuous_integration

  See:

    <http://pytest-django.readthedocs.org/en/latest/configuring_django.html>
    <https://github.com/pytest-dev/pytest-django/issues/62>

  """
  settings_module = os.getenv("DJANGO_SETTINGS_MODULE")
  if settings_module is None:
    settings = django.conf.Settings("twitter.xx.yy.settings.continuous_integration")
    django.conf.settings.configure(settings)