code: def test_cudf_list_struct_write(tmpdir):
      df = cudf.DataFrame(
          {
              "a": [1, 2, 3],
              "b": [[[1, 2]], [[2, 3]], None],
              "c": [[[["a", "z"]]], [[["b", "d", "e"]]], None],
          }
      )
      df["d"] = df.to_struct()
  
      ddf = dask_cudf.from_cudf(df, 3)
      temp_file = str(tmpdir.join("list_struct.parquet"))
  
      ddf.to_parquet(temp_file)
      new_ddf = dask_cudf.read_parquet(temp_file)
      dd.assert_eq(df, new_ddf)
  
imports: import glob
  import math
  import os
  import numpy
  import pandas
  import pytest
  import dask
  from dask import dataframe
  from dask.utils import natural_sort_key
  import cudf
  import dask_cudf
label_desc: Use image node_id 21 for calling a global function with example usage: test_cudf_list_struct_write(tmpdir) without return types