new_contents: from __future__ import unicode_literals
  import os
  
  DIRNAME = os.path.dirname(__file__)
  
  DEBUG = True
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.postgresql_psycopg2',
          'NAME': 'mydatabase'
      }
  }
  
  INSTALLED_APPS = (
      'django.contrib.admin',
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.messages',
      'django.contrib.sessions',
      'mptt',
      'myapp',
  )
  
  # Required for Django 1.4+
  STATIC_URL = '/static/'
  
  # Required for Django 1.5+
  SECRET_KEY = 'abc123'
  
  # Required for Django 1.7+
  MIDDLEWARE_CLASSES = (
      'django.middleware.common.CommonMiddleware',
      'django.contrib.sessions.middleware.SessionMiddleware',
      'django.middleware.csrf.CsrfViewMiddleware',
      'django.contrib.auth.middleware.AuthenticationMiddleware',
      'django.contrib.messages.middleware.MessageMiddleware',
  )
  
  TEMPLATE_CONTEXT_PROCESSORS = (
      'django.contrib.auth.context_processors.auth',
      'django.core.context_processors.debug',
      'django.core.context_processors.i18n',
      'django.core.context_processors.media',
      'django.core.context_processors.static',
      'django.core.context_processors.request',
      'django.contrib.messages.context_processors.messages',
  )
  
  ROOT_URLCONF = 'myapp.urls'
  
subject: Create tests_postgres.py