Source code for gluonts.dataset
# Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License").
# You may not use this file except in compliance with the License.
# A copy of the License is located at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# or in the "license" file accompanying this file. This file is distributed
# on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
# express or implied. See the License for the specific language governing
# permissions and limitations under the License.
from dataclasses import dataclass
from pathlib import Path
from typing import Any, Dict, Iterator, List, Optional
from typing_extensions import Protocol, runtime_checkable
from gluonts.itertools import roundrobin
# Dictionary used for data flowing through the transformations.
DataEntry = Dict[str, Any]
DataBatch = Dict[str, Any]
[docs]@runtime_checkable
class Dataset(Protocol):
def __iter__(self) -> Iterator[DataEntry]:
raise NotImplementedError
def __len__(self) -> int:
raise NotImplementedError
[docs]@dataclass
class DatasetCollection:
"""Flattened access to a collection of datasets."""
datasets: List[Dataset]
interleave: bool = False
def __iter__(self):
if self.interleave:
yield from self.iter_interleaved()
else:
yield from self.iter_sequential()
def __len__(self):
return sum(map(len, self.datasets))