def copy(self):
        new_data_collection = DataCollection()
        for item in self.iteritems():
            new_data_collection.add_data(item)
        return new_data_collection
Rollback a connection to the named savepoint.
dataset/ETHPy150Open impactlab/eemeter/eemeter/meter/base.py/DataCollection.copy--crossover with--dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/engine/interfaces.py/Dialect.do_rollback_to_savepoint