def __init__(self, sd, id):
        """This constructor should not be called by the user program.
        Call the SD.create() and SD.select() methods instead.
                                                  """

        # Args
        #  sd   : SD instance
        #  id   : SDS identifier


        # Private attributes
        #  _sd  SD intance
        #  _id  SDS identifier
        self._sd = sd
        self._id = id
def __init__ ( self , sd , id ) : self . _sd = sd self . _id = id
This constructor should not be called by the user program.
        Call the SD.create() and SD.select() methods instead.