code: def test_rowwise_reductions(data, op):
      gddf = dgd.from_cudf(data, npartitions=10)
      pddf = gddf.to_dask_dataframe()
  
      if op in ("var", "std"):
          expected = getattr(pddf, op)(axis=1, ddof=0)
          got = getattr(gddf, op)(axis=1, ddof=0)
      else:
          expected = getattr(pddf, op)(axis=1)
          got = getattr(pddf, op)(axis=1)
  
      dd.assert_eq(expected.compute(), got.compute(), check_exact=False)
  
file_path: cudf/python/dask_cudf/dask_cudf/tests/test_reductions.py
imports: import numpy
  import pandas
  import pytest
  from dask import dataframe
  import cudf
  import dask_cudf
label_desc: Use image node_id 4 for calling a global function with example usage: test_rowwise_reductions(data, op) without return types