code: def test_zero_std_describe():
      num = 84886781
      df = cudf.DataFrame(
          {
              "x": np.full((20,), num, dtype=np.float64),
              "y": np.full((20,), num, dtype=np.float64),
          }
      )
      pdf = df.to_pandas()
      ddf = dgd.from_cudf(df, npartitions=4)
      pddf = dd.from_pandas(pdf, npartitions=4)
  
      dd.assert_eq(
          ddf.describe(), pddf.describe(), check_less_precise=3
      )
  
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 45 for calling a global function with example usage: test_zero_std_describe() without return types