'Args:
args, kwargs: Same as in :class:`LMDBData`.'

def __init__(self, *args, **kwargs):

    if isinstance(args[0], DataFlow):
        ds = args[0]
    else:
        ds = LMDBData(*args, **kwargs)
    def f(dp):
        return loads(dp[1])
    super(LMDBDataPoint, self).__init__(ds, f)
