# Dataset

Source: https://www.tensorplay.cn/docs/generated/tensorplay.utils.data.Dataset.html

# Dataset

class tensorplay.utils.data.Dataset[[source]](../_modules/tensorplay/utils/data.html#Dataset)

An abstract class representing a [Dataset](#tensorplay.utils.data.Dataset).

All datasets that represent a map from keys to data samples should subclass
it. All subclasses should overwrite __getitem__(), supporting fetching
a data sample for a given key. Subclasses could also optionally overwrite
__len__(), which is expected to return the size of the dataset by many
[Sampler](tensorplay.utils.data.Sampler.html#tensorplay.utils.data.Sampler) implementations and the default
options of [DataLoader](tensorplay.utils.data.DataLoader.html#tensorplay.utils.data.DataLoader).

Note

[DataLoader](tensorplay.utils.data.DataLoader.html#tensorplay.utils.data.DataLoader) by default constructs an index
sampler that yields integral indices. To make it work with a map-style
dataset with non-integral indices/keys, a custom sampler must be provided.