old_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  import importlib
  import logging
  
  from ziggurat_foundations.exc import ZigguratException
  from ziggurat_foundations.models.base import get_db_session
  
  CONFIG_KEY = 'ziggurat_foundations'
  log = logging.getLogger(__name__)
  
  
  def includeme(config):
      settings = config.registry.settings
  
      user_model_location = settings.get('%s.model_locations.User' % CONFIG_KEY)
      session_provider_callable = settings.get(
          '%s.session_provider_callable' % CONFIG_KEY)
  
      if not user_model_location:
          raise ZigguratException('''You need to pass location of user model
          inside your application eg.:
          ziggurat_foundations.user_model_location = youappname.models:User
          ''')
  
      if not session_provider_callable:
          def session_provider_callable(request):
              return get_db_session()
  
          test_session_callable = None
      else:
          parts = session_provider_callable.split(':')
          _tmp = importlib.import_module(parts[0])
          session_provider_callable = getattr(_tmp, parts[1])
          test_session_callable = "session exists"
  
      parts = user_model_location.split(':')
      _tmp = importlib.import_module(parts[0])
      UserModel = getattr(_tmp, parts[1])
  
      # This function is bundled into the request, so for each request you can
      # do request.user
      def get_user(request):
          userid = request.unauthenticated_userid
          if test_session_callable == None:
              # set db_session to none to pass to the UserModel.by_id
              db_session = None
          else:
              # Else assign the request.session
              db_session = session_provider_callable(request)
          if userid is not None:
              return UserModel.by_id(userid, db_session=db_session)
  
      # add in request.user function
      config.set_request_property(get_user, 'user', reify=True)
  
new_contents: # -*- coding: utf-8 -*-
  from __future__ import unicode_literals
  
  import importlib
  import logging
  
  from ziggurat_foundations.exc import ZigguratException
  from ziggurat_foundations.models.base import get_db_session
  
  CONFIG_KEY = 'ziggurat_foundations'
  log = logging.getLogger(__name__)
  
  
  def includeme(config):
      settings = config.registry.settings
  
      user_model_location = settings.get('%s.model_locations.User' % CONFIG_KEY)
      session_provider_callable = settings.get(
          '%s.session_provider_callable' % CONFIG_KEY)
  
      if not user_model_location:
          raise ZigguratException('''You need to pass location of user model
          inside your application eg.:
          ziggurat_foundations.model_locations.User = youappname.models:User
          ''')
  
      if not session_provider_callable:
          def session_provider_callable(request):
              return get_db_session()
  
          test_session_callable = None
      else:
          parts = session_provider_callable.split(':')
          _tmp = importlib.import_module(parts[0])
          session_provider_callable = getattr(_tmp, parts[1])
          test_session_callable = "session exists"
  
      parts = user_model_location.split(':')
      _tmp = importlib.import_module(parts[0])
      UserModel = getattr(_tmp, parts[1])
  
      # This function is bundled into the request, so for each request you can
      # do request.user
      def get_user(request):
          userid = request.unauthenticated_userid
          if test_session_callable == None:
              # set db_session to none to pass to the UserModel.by_id
              db_session = None
          else:
              # Else assign the request.session
              db_session = session_provider_callable(request)
          if userid is not None:
              return UserModel.by_id(userid, db_session=db_session)
  
      # add in request.user function
      config.set_request_property(get_user, 'user', reify=True)
  
subject: fix error message