code: def __getitem__(self, index):
      ann = copy.deepcopy(self.annotation[index])
      ann["sample_id"] = ann["filename"]
      ann["label"] = ann["category"].replace("_", " ")
      for modality in self.modalities:
          ann[f"{modality}_path"] = getattr(
              self, f"get_{modality}_path"
          )(ann)
          if isinstance(ann[f"{modality}_path"], list):
              ann[f"{modality}_path"] = random.choice(
                  ann[f"{modality}_path"]
              )
          else:
              ann[
                  modality if "image" not in modality else "image"
              ] = getattr(
                  self,
                  f"{'vis' if 'image' in modality else modality}_processor",
              )(
                  ann[f"{modality}_path"]
              )
  
      if ann["audio"].sum() == 0:
          return None
  
      return ann
  
imports: import os
  from collections import OrderedDict
  import torch
  import copy
  import pathlib
  import random
  import json
  import pandas
  import torchaudio
  import torch
  from tqdm import tqdm
  from lavis.datasets.datasets.base_dataset import BaseDataset
label_desc: Use image node_id 10 for calling the ESC50 obj's underlying member method code with example usage: obj.__getitem__(index) and returns: ann, None