Py39 can't check isisntance of a Union type.

idaholab · Dec 15, 2024 · 09cf9f9 · 09cf9f9
1 parent e855ca2
commit 09cf9f9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/montepy/mcnp_object.py b/montepy/mcnp_object.py
@@ -121,7 +121,7 @@ def __init__(
         self._parameters = ParametersNode()
         self._input = None
         if input:
-            if not isinstance(input, InitInput):
+            if not isinstance(input, (montepy.input_parser.mcnp_input.Input, str)):
                 raise TypeError(f"input must be an Input or str. {input} given.")
             if isinstance(input, str):
                 input = montepy.input_parser.mcnp_input.Input(