code: def get_finder(import_path):
      
      Finder = import_string(import_path)
      if not issubclass(Finder, BaseFinder):
          raise ImproperlyConfigured('Finder "%s" is not a subclass of "%s"' %
                                     (Finder, BaseFinder))
      return Finder()
docs: Imports the media fixtures files finder class described by import_path, where
      import_path is the full Python path to the class.