code: def import_prefs():
      
      
      # settings.py locals if autodiscover_siteprefs() is in urls.py
      settings_locals = get_frame_locals(3)
  
      if 'self' not in settings_locals:  # If not SiteprefsConfig.ready()
          # Try to import project-wide prefs.
  
          project_package = settings_locals['__package__']  # Expected project layout introduced in Django 1.4
          if not project_package:
              # Fallback to old layout.
              project_package = os.path.split(os.path.dirname(settings_locals['__file__']))[-1]
  
          import_module(project_package, PREFS_MODULE_NAME)
  
      import_project_modules(PREFS_MODULE_NAME)
docs: Imports preferences modules from packages (apps) and project root.