class_docstr: Dataset for use in sktime deep learning forecasters.
class_docstr_tok: ["Dataset","for","use","in","sktime","deep","learning","forecasters","."]
docstr: Return length of dataset.
docstr_tok: ["Return","length","of","dataset","."]
code: def __len__(self):
      """Return length of dataset."""
      return 1
  
imports: from abc import ABC, abstractmethod
  import numpy
  import pandas
  from sktime.base import BaseObject
  from sktime.forecasting.base import BaseForecaster
  from sktime.utils.validation._dependencies import _check_soft_dependencies
label_desc: Use image node_id 2 for calling the PyTorchPredDataset obj's underlying member method code with example usage: obj.__len__() and returns: int