code: def import_class(import_path, setting_name=None):
      
      mod_name, class_name = import_path.rsplit('.', 1)
  
      # import module
      mod = import_module_or_none(mod_name)
      if mod is not None:
          # Loaded module, get attribute
          try:
              return getattr(mod, class_name)
          except AttributeError:
              pass
  
      # For ImportError and AttributeError, raise the same exception.
      if setting_name:
          raise ImproperlyConfigured("{0} does not point to an existing class: {1}".format(setting_name, import_path))
      else:
          raise ImproperlyConfigured("Class not found: {0}".format(import_path))
docs: Import a class by name.