old_contents: # -*- coding: utf-8 -*-
  from simple_settings import settings
  
  
  print settings.SIMPLE_CONF
  
new_contents: # -*- coding: utf-8 -*-
  import os
  
  from simple_settings import settings
  
  
  os.environ.setdefault('settings', 'project_settings')
  print settings.SIMPLE_CONF
  
subject: update simple example to show use of `os.environ.setdefault` method with simple-settings to avoid use of command line and real os env