old_contents: from common import *
  
  
  def test_dtype(ds_local):
    ds = ds_local
    for name in ds.column_names:
      assert ds[name].values.dtype == ds.dtype(ds[name])
  
  
  def test_dtypes(ds_local):
    ds = ds_local
    assert ds.dtypes.values.tolist() == [ds.dtypes[name] for name in ds.column_names]
  
new_contents: from common import *
  
  
  def test_dtype(ds_local):
    ds = ds_local
    for name in ds.column_names:
      assert ds[name].values.dtype == ds.dtype(ds[name])
  
  
  def test_dtypes(ds_local):
    ds = ds_local
    assert [ds.dtypes[name] for name in ds.column_names] == [ds[name].dtype for name in ds.column_names]
  
subject: Update of the dtypes_test.py.