code: def data_not_in(db_data, user_data):
          
          if isinstance(user_data, list):
              if db_data not in user_data:
                  return True
          return False
docs: Validate data not in user data.
  
          Args:
              db_data (str): The data store in Redis.
              user_data (list): The user provided data.
  
          Returns:
              bool: True if the data passed validation.