code: def get_custom_providers():
      
  
      providers = getattr(settings, 'SITEMETRICS_PROVIDERS', False)
  
      if not providers:
          return []
  
      p_clss = []
      for provider_path in providers:
          path_splitted = provider_path.split('.')
          mod = import_module('.'.join(path_splitted[:-1]))
          p_cls = getattr(mod, path_splitted[-1])
          p_clss.append(p_cls)
      return p_clss
docs: Imports providers classes by paths given in SITEMETRICS_PROVIDERS setting.