diff --git a/twml/twml/tensorio.py b/twml/twml/tensorio.py
index bc551ac56..020daf8e5 100644
--- a/twml/twml/tensorio.py
+++ b/twml/twml/tensorio.py
@@ -45,22 +45,23 @@ class _KeyRecorder(object):
 # convert tensorio tensor type to numpy data type.
 # also returns element size in bytes.
 def _get_data_type(data_type):
-  if data_type == 'Double':
-    return (np.float64, 8)
+  match data_type:
+    case 'Double':
+      return (np.float64, 8)
 
-  if data_type == 'Float':
-    return (np.float32, 4)
+    case 'Float':
+      return (np.float32, 4)
 
-  if data_type == 'Int':
-    return (np.int32, 4)
+    case 'Int':
+      return (np.int32, 4)
 
-  if data_type == 'Long':
-    return (np.int64, 8)
+    case 'Long':
+      return (np.int64, 8)
 
-  if data_type == 'Byte':
-    return (np.int8, 1)
-
-  raise ValueError('Unexpected tensorio data type: ' + data_type)
+    case 'Byte':
+      return (np.int8, 1)
+    case _:
+      raise ValueError('Unexpected tensorio data type: ' + data_type)
 
 
 class TensorIO(object):