code: def test_get_scheduler_with_distributed_active_reset_config(c):
      assert get_scheduler() == c.get
      with dask.config.set(scheduler="threads"):
          with pytest.warns(UserWarning):
              assert get_scheduler() != c.get
          with dask.config.set(scheduler=None):
              assert get_scheduler() == c.get
  
imports: from __future__ import annotations
  import pytest
  import asyncio
  import os
  import sys
  from functools import partial
  from operator import add
  from distributed import Client, SchedulerPlugin, WorkerPlugin
  from distributed.utils_test import cleanup
  from distributed.utils_test import client
  from distributed.utils_test import cluster, cluster_fixture, gen_cluster, loop, loop_in_thread, popen, varying
  import dask
  import dask.bag
  from dask import compute, delayed, persist
  from dask.base import compute_as_if_collection, get_scheduler
  from dask.blockwise import Blockwise
  from dask.delayed import Delayed
  from dask.distributed import futures_of, wait
  from dask.layers import ShuffleLayer, SimpleShuffleLayer
  from dask.utils import get_named_args, get_scheduler_lock, tmpdir, tmpfile
  from dask.utils_test import inc
label_desc: Use image node_id 27 for calling a global function with example usage: test_get_scheduler_with_distributed_active_reset_config(c) without return types