def drop_keyspace(self, keyspace):
        self._schema_update(self._conn.system_drop_keyspace, keyspace)
examine a specific mailbox (just like select, but read only)
dataset/ETHPy150Open pycassa/pycassa/pycassa/system_manager.py/SystemManager.drop_keyspace--crossover with--dataset/ETHPy150Open scanner/asimap/asimap/client.py/Authenticated.do_examine