class_docstr: Test of the generic dictionary interface.
class_docstr_tok: ["Test","of","the","generic","dictionary","interface","."]
code: def test_dataset_dataset_ht_dtypes(self):
      ds = self.table
      str_type = "<U1"
      self.assertEqual(
          ds.interface.dtype(ds, "Gender"), np.dtype(str_type)
      )
      self.assertEqual(ds.interface.dtype(ds, "Age"), np.dtype(int))
      self.assertEqual(ds.interface.dtype(ds, "Weight"), np.dtype(int))
      self.assertEqual(
          ds.interface.dtype(ds, "Height"), np.dtype("float64")
      )
  
file_path: holoviews/holoviews/tests/core/data/test_dictinterface.py
imports: import numpy
  from holoviews.core.data import Dataset
  from .base import HeterogeneousColumnTests, InterfaceTests, ScalarColumnTests
label_desc: Use image node_id 2 for calling the DictDatasetTest obj's underlying member method code with example usage: obj.test_dataset_dataset_ht_dtypes() without return types