class_docstr: Test of the pandas DaskDataset interface.
class_docstr_tok: ["Test","of","the","pandas","DaskDataset","interface","."]
code: def test_dataset_range_categorical_dimension(self):
      ddf = dd.from_pandas(pd.DataFrame({"a": ["1", "2", "3"]}), 1)
      ds = Dataset(ddf)
      self.assertEqual(ds.range(0), ("1", "3"))
  
imports: import unittest
  from unittest import SkipTest
  import numpy
  import pandas
  from packaging.version import Version
  from holoviews.core.data import Dataset
  from holoviews.core.util import pandas_version
  from holoviews.util.transform import dim
  from .test_pandasinterface import BasePandasInterfaceTests
label_desc: Use image node_id 21 for calling the DaskDatasetTest obj's underlying member method code with example usage: obj.test_dataset_range_categorical_dimension() without return types