code: def test_dataframe_set_index():
      random.seed(0)
      df = cudf.datasets.randomdata(26, dtypes={"a": float, "b": int})
      df["str"] = list("abcdefghijklmnopqrstuvwxyz")
      pdf = df.to_pandas()
  
      ddf = dgd.from_cudf(df, npartitions=4)
      ddf = ddf.set_index("str")
  
      pddf = dd.from_pandas(pdf, npartitions=4)
      pddf = pddf.set_index("str")
      from cudf.testing._utils import assert_eq
  
      assert_eq(ddf.compute(), pddf.compute())
  
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 42 for calling a global function with example usage: test_dataframe_set_index() without return types