unicore/data/from_numpy_dataset.py

# Copyright (c) DP Technology.
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.

import torch
from functools import lru_cache

from . import BaseWrapperDataset


class FromNumpyDataset(BaseWrapperDataset):
    def __init__(self, dataset):
        super().__init__(dataset)

    @lru_cache(maxsize=16)
    def __getitem__(self, idx):
        return torch.from_numpy(self.dataset[idx])