code: def test_pytorch_hello_world_external_dataset_example(
      external_dataset,
  ):
      pytorch_hello_world(external_dataset.url)
  
file_path: petastorm/examples/hello_world/external_dataset/tests/test_generate_external_dataset.py
imports: import os
  import unittest
  import pytest
  from examples.hello_world.external_dataset.generate_external_dataset import generate_external_dataset
  from examples.hello_world.external_dataset.python_hello_world import python_hello_world
  from examples.hello_world.external_dataset.pytorch_hello_world import pytorch_hello_world
  from examples.hello_world.external_dataset.tensorflow_hello_world import tensorflow_hello_world
  from petastorm import make_batch_reader
  from petastorm.tests.conftest import SyntheticDataset
  from petastorm.tests.test_tf_utils import create_tf_graph
label_desc: Use image node_id 3 for calling a global function with example usage: test_pytorch_hello_world_external_dataset_example(external_dataset) without return types