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mindspore.dataset.SubsetSampler
====================================
.. py:class:: mindspore.dataset.SubsetSampler(indices, num_samples=None)
对索引序列中的元素进行采样。
**参数:**
- **indices** (Any iterable Python object but string): 索引的序列。
- **num_samples** (int, optional): 要采样的元素数量默认值为None采样所有元素
**样例:**
>>> indices = [0, 1, 2, 3, 4, 5]
>>>
>>> # 创建SubsetSampler从提供的索引采样
>>> sampler = ds.SubsetSampler(indices)
>>> dataset = ds.ImageFolderDataset(image_folder_dataset_dir,
... num_parallel_workers=8,
... sampler=sampler)
**异常:**
- **TypeError** 索引元素的类型不是数字。
- **TypeError** `num_samples` 不是整数值。
- **ValueError** `num_samples` 为负值。
.. include:: mindspore.dataset.BuiltinSampler.rst