code: def test_get_context_always_default():
      """On Python 2/Windows, get_context() always returns same context."""
      assert get_context() is multiprocessing
      with pytest.warns(UserWarning):
          with dask.config.set(
              {"multiprocessing.context": "forkserver"}
          ):
              assert get_context() is multiprocessing
  
imports: from __future__ import annotations
  import multiprocessing
  import pickle
  import sys
  from concurrent.futures import ProcessPoolExecutor
  from operator import add
  import pytest
  import dask
  from dask import compute, delayed
  from dask.multiprocessing import _dumps, _loads, get, get_context, remote_exception
  from dask.system import CPU_COUNT
  from dask.utils_test import inc
label_desc: Use image node_id 25 for calling a global function with example usage: test_get_context_always_default() without return types