add check for user-provided unique_id in TimeMappingDict already exists

brightway-lca · Sep 18, 2024 · 47e8da3 · 47e8da3
1 parent 7d11563
commit 47e8da3
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/bw_timex/helper_classes.py b/bw_timex/helper_classes.py
@@ -129,6 +129,10 @@ def add(self, process_time_tuple, unique_id=None):
             return self[process_time_tuple]
 
         if unique_id is not None:
+            if unique_id in self.values():
+                raise ValueError(
+                    f"Unique ID {unique_id} is already assigned to another process_time_tuple."
+                )
             self[process_time_tuple] = unique_id
             return unique_id