code: def test_datasets_setitem(client):
      for key in ["key", ("key", "key"), 1]:
          value = "value"
          client.datasets[key] = value
          assert client.get_dataset(key) == value
          assert (
              client.get_dataset(key, default="something else") == value
          )
  
file_path: distributed/distributed/tests/test_publish.py
imports: from __future__ import annotations
  import asyncio
  import pytest
  from dask import delayed
  from distributed import Client
  from distributed.client import futures_of
  from distributed.metrics import time
  from distributed.protocol import Serialized
  from distributed.utils_test import gen_cluster, inc
label_desc: Use image node_id 3 for calling a global function with example usage: test_datasets_setitem(client) without return types