code: def verify_splits(splits, blocks_by_split):
      assert len(splits) == len(blocks_by_split)
      for blocks, (block_refs, meta) in zip(blocks_by_split, splits):
          assert len(blocks) == len(block_refs)
          assert len(blocks) == len(meta)
          for block, block_ref, meta in zip(blocks, block_refs, meta):
              assert list(ray.get(block_ref)["id"]) == block
              assert meta.num_rows == len(block)
  
imports: import itertools
  import math
  import random
  import time
  from unittest.mock import patch
  import numpy
  import pandas
  import pytest
  import ray
  from ray.data._internal.block_list import BlockList
  from ray.data._internal.equalize import _equalize
  from ray.data._internal.execution.interfaces import RefBundle
  from ray.data._internal.logical.interfaces import LogicalPlan
  from ray.data._internal.logical.operators.input_data_operator import InputData
  from ray.data._internal.plan import ExecutionPlan
  from ray.data._internal.split import _drop_empty_block_split, _generate_global_split_results, _generate_per_block_split_indices, _generate_valid_indices, _split_at_indices, _split_single_block
  from ray.data._internal.stats import DatasetStats
  from ray.data.block import BlockAccessor, BlockMetadata
  from ray.data.dataset import Dataset
  from ray.data.tests.conftest import *
  from ray.data.tests.util import extract_values
  from ray.tests.conftest import *
label_desc: Use image node_id 20 for calling a global function with example usage: verify_splits(splits, blocks_by_split) without return types