Fix import

michaelosthege · web-flow · commit 4096bea2fa97 · 2022-10-28T09:00:38.000+02:00
diff --git a/pymc/util.py b/pymc/util.py
@@ -14,7 +14,7 @@
 
 import functools
 
-from typing import Any, Dict, List, Tuple, cast
+from typing import Any, Dict, List, Tuple, Union, cast
 
 import arviz
 import cloudpickle
