code: def pdf():
      return pd.DataFrame(
          {
              "x": [1, 2, 3, 4, 5, 6],
              "y": [11.0, 12.0, 13.0, 14.0, 15.0, 16.0],
          }
      )
  
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 29 for calling a global function with example usage: pdf() and returns: pd