@abc.abstractmethod
    def _log(self, message, *args, **kwargs):
'Deep, sparse compare.
dataset/ETHPy150Open openstack/taskflow/taskflow/listeners/base.py/LoggingBase._log--crossover with--dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/testing/entities.py/ComparableEntity.__eq__