code: def gen_reddit_dataset():
      """Returns a function to be called on each worker that returns Reddit Dataset."""
  
      # For Reddit dataset, we have to download the data on each node, so we create the
      # dataset on each training worker.
      with FileLock(os.path.expanduser("~/.reddit_dataset_lock")):
          dataset = Reddit("./data/Reddit")
      return dataset
  
imports: import argparse
  import os
  import torch
  import torch.nn.functional
  from filelock import FileLock
  from torch_geometric.datasets import FakeDataset, Reddit
  from torch_geometric.loader import NeighborSampler
  from torch_geometric.nn import SAGEConv
  from torch_geometric.transforms import RandomNodeSplit
  from ray import train
  from ray.train import ScalingConfig
  from ray.train.torch import TorchTrainer
label_desc: Use image node_id 3 for calling a global function with example usage: gen_reddit_dataset() and returns: dataset