code: def test_get_parallel_devices(devices, expected):
      assert CPUAccelerator.get_parallel_devices(devices) == expected
  
file_path: pytorch-lightning/tests/tests_fabric/accelerators/test_cpu.py
imports: import pytest
  import torch
  from lightning.fabric.accelerators.cpu import CPUAccelerator, _parse_cpu_cores
label_desc: Use image node_id 4 for calling a global function with example usage: test_get_parallel_devices(devices, expected) without return types