def __len__(self):
        return len(self._dict)
Private function that removes the cached array.  Do not
dataset/ETHPy150Open ntoll/p4p2p/p4p2p/dht/storage.py/DictDataStore.__len__--crossover with--dataset/ETHPy150Open enthought/mayavi/tvtk/array_handler.py/ArrayCache._remove_array