code: def test_index_map_partitions():
      # https://github.com/rapidsai/cudf/issues/6738
  
      ddf = dd.from_pandas(
          pd.DataFrame({"a": range(10)}), npartitions=2
      )
      mins_pd = ddf.index.map_partitions(
          M.min, meta=ddf.index
      ).compute()
  
      gddf = dgd.from_cudf(
          cudf.DataFrame({"a": range(10)}), npartitions=2
      )
      mins_gd = gddf.index.map_partitions(
          M.min, meta=gddf.index
      ).compute()
  
      dd.assert_eq(mins_pd, mins_gd)
  
imports: import random
  import cupy
  import numpy
  import pandas
  import pytest
  from packaging import version
  import dask
  from dask import dataframe
  from dask.dataframe.core import make_meta, meta_nonempty
  from dask.utils import M
  import cudf
  import dask_cudf
label_desc: Use image node_id 47 for calling a global function with example usage: test_index_map_partitions() without return types