diff --git a/holoviews/operation/datashader.py b/holoviews/operation/datashader.py
index 4b561edd95..c5fe4706bf 100644
--- a/holoviews/operation/datashader.py
+++ b/holoviews/operation/datashader.py
@@ -27,7 +27,7 @@
                     CompositeOverlay, Dataset, Overlay, OrderedDict, Store)
 from ..core.data import PandasInterface, XArrayInterface, DaskInterface, cuDFInterface
 from ..core.util import (
-    Iterable, LooseVersion, basestring cast_array_to_int64, cftime_types, cftime_to_timestamp,
+    Iterable, LooseVersion, basestring, cast_array_to_int64, cftime_types, cftime_to_timestamp,
     datetime_types, dt_to_int, isfinite, get_param_values, max_range, config
 )
 from ..element import (Image, Path, Curve, RGB, Graph, TriMesh,
diff --git a/holoviews/tests/operation/testdatashader.py b/holoviews/tests/operation/testdatashader.py
index 913482089e..ad1878aca0 100644
--- a/holoviews/tests/operation/testdatashader.py
+++ b/holoviews/tests/operation/testdatashader.py
@@ -724,7 +724,7 @@ def test_uint_dtype(self):
     def test_uint64_dtype(self):
         df = pd.DataFrame(np.arange(2, dtype=np.uint64), columns=["A"])
         curve = Curve(df)
-        with self.assertRaisesRegex(TypeError, match="Dtype of uint64 for column A is not supported"):
+        with self.assertRaisesRegex(TypeError, "Dtype of uint64 for column A is not supported"):
             rasterize(curve, dynamic=False, height=10, width=10)