from datetime import datetime


def id_maker(obj):
    """
    Makes an ID from the object's class name and the datetime now in ISO format.

    :param obj: the class from which to make the ID
    :return: ID
    """
    dtfmt = '%Y%m%d-%H%M%S'
    return '%s-%s' % (obj.__class__.__name__, datetime.now().strftime(dtfmt))