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firedrakeproject · Apr 18, 2024 · 280716f · 280716f
1 parent fbd288e
commit 280716f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/ufl/utils/sorting.py b/ufl/utils/sorting.py
@@ -80,6 +80,8 @@ def canonicalize_metadata(metadata):
             value = canonicalize_metadata(value)
         elif isinstance(value, (int, float, str)) or value is None:
             value = str(value)
+        elif hasattr(value, "ufl_signature"):
+            value = value.ufl_signature
         else:
             warnings.warn(f"Applying str() to a metadata value of type {type(value).__name__}, "
                           "don't know if this is safe.")