old_contents: # -*- coding: utf-8 -*-
  import sqlalchemy as sa
  from alchemist.conf import settings
  
  
  class Session(sa.orm.Session):
  
      def __init__(self, *args, **kwargs):
          # TODO: Support multiple database routing.
          # Bind to the default database.
          kwargs.setdefault(bind, settings['DATABASES']['default'])
  
          # Continue the initialization.
          super().__init__(*args, **kwargs)
  
new_contents: # -*- coding: utf-8 -*-
  import sqlalchemy as sa
  from alchemist.conf import settings
  
  
  class Session(sa.orm.Session):
  
      def __init__(self, *args, **kwargs):
          # TODO: Support multiple database routing.
          # Bind to the default database.
          kwargs.setdefault('bind', settings['DATABASES']['default'])
  
          # Continue the initialization.
          super().__init__(*args, **kwargs)
  
subject: Fix name error.