code: def install_import_hook():
      
      saved_import = builtins.__import__
      @functools.wraps(saved_import)
      def import_hook(name, *args, **kwargs):
          if name == 'end':
              process_import()
          end
          return saved_import(name, *args, **kwargs)
      end
      builtins.__import__ = import_hook
docs: Installs __import__ hook.