old_contents: from django.apps import AppConfig as BaseAppConfig
  from django.utils.importlib import import_module
  
  
  class AppConfig(BaseAppConfig):
  
      name = "conf_site"
  
      def ready(self):
          import_module("conf_site.receivers")
  
new_contents: from importlib import import_module
  
  from django.apps import AppConfig as BaseAppConfig
  
  
  class AppConfig(BaseAppConfig):
  
      name = "conf_site"
  
      def ready(self):
          import_module("conf_site.receivers")
  
subject: Remove Django importlib in favor of stdlib.