grain.experimental.ParquetIterDataset

class grain.experimental.ParquetIterDataset(path, **read_kwargs)

An IterDataset for a parquet format file.

Parameters:

path (str)

__init__(path, **read_kwargs)

Initializes ParquetIterDataset.

Parameters:

• path (str) – A path to a parquet format file.

• **read_kwargs – Keyword arguments to pass to pyarrow.parquet.ParquetFile.

Methods

__init__(path, **read_kwargs)	Initializes ParquetIterDataset.
apply(transformations)	Returns a dataset with the given transformation(s) applied.
batch(batch_size, *[, drop_remainder, batch_fn])	Returns a dataset of elements batched along a new first dimension.
filter(transform)	Returns a dataset containing only the elements that match the filter.
map(transform)	Returns a dataset containing the elements transformed by transform.
map_with_index(transform)	Returns a dataset of the elements transformed by the transform.
mp_prefetch([options, worker_init_fn])	Returns a dataset prefetching elements in multiple processes.
pipe(func, /, *args, **kwargs)	Syntactic sugar for applying a callable to this dataset.
prefetch(multiprocessing_options)	Deprecated, use mp_prefetch instead.
random_map(transform, *[, seed])	Returns a dataset containing the elements transformed by transform.
seed(seed)	Returns a dataset that uses the seed for default seed generation.

Attributes

parents