code: def test_from_iterators(ray_start_regular_shared):
      it = from_iterators([range(2), range(2)])
      assert repr(it) == "ParallelIterator[from_iterators[shards=2]]"
      assert list(it.gather_sync()) == [0, 0, 1, 1]
  
imports: import sys
  import time
  import collections
  from collections import Counter
  import pytest
  import ray
  from ray.util.iter import from_items, from_iterators, from_range, from_actors, ParallelIteratorWorker, LocalIterator
  from ray._private.test_utils import Semaphore
label_desc: Use image node_id 9 for calling a global function with example usage: test_from_iterators(ray_start_regular_shared) without return types