code: def _ensure_dir(path):
      """Makes sure that the directory at path exists."""
      dirname = os.path.dirname(path)
      os.makedirs(dirname, exist_ok=True)
  
imports: import bisect
  import os
  import shutil
  import tempfile
  from typing import Any, Callable, Dict, List, Union
  import torchvision.datasets
  from PIL import Image
  from torchvision import transforms
  from torchvision.datasets.vision import StandardTransform, VisionDataset
  from lightly.data._helpers import DatasetFolder, _load_dataset_from_folder
  from lightly.data._video import VideoDataset
label_desc: Use image node_id 2 for calling a global function with example usage: _ensure_dir(path) without return types