Made exemption for mat 0.

idaholab · Nov 27, 2024 · 58ade28 · 58ade28
1 parent afbd1c2
commit 58ade28
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/montepy/data_inputs/material.py b/montepy/data_inputs/material.py
@@ -1215,7 +1215,7 @@ def get_material_elements(self):
         return elements
 
     def validate(self):
-        if len(self._components) == 0:
+        if len(self._components) == 0 and self.number != 0:
             raise IllegalState(
                 f"Material: {self.number} does not have any components defined."
             )