Use Py3.9-compliant typing

Materials-Consortia · Oct 14, 2023 · 8cc0dc4 · 8cc0dc4
1 parent 02ae46e
commit 8cc0dc4
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/optimade/models/types.py b/optimade/models/types.py
@@ -1,4 +1,4 @@
-from typing import Annotated, Optional
+from typing import Annotated, Optional, Union
 
 from pydantic import Field
 
@@ -23,4 +23,4 @@
 
 AnnotatedType = type(ChemicalSymbol)
 OptionalType = type(Optional[str])
-UnionType = type(str | int)
+UnionType = type(Union[str, int])