code: def test_correct_seed_with_environment_variable():
      """Ensure that the PL_GLOBAL_SEED environment is read."""
      assert lightning.fabric.utilities.seed.seed_everything() == 2020
  
file_path: pytorch-lightning/tests/tests_fabric/utilities/test_seed.py
imports: import os
  from unittest import mock
  from unittest.mock import Mock
  import lightning.fabric.utilities
  import pytest
  import torch
  from lightning.fabric.utilities.seed import _collect_rng_states, _set_rng_states
label_desc: Use image node_id 3 for calling a global function with example usage: test_correct_seed_with_environment_variable() without return types