Fix regression in SymPy 1.2

firedrakeproject · Jul 10, 2018 · 8ceb29a · 8ceb29a
1 parent 533c0cd
commit 8ceb29a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/FIAT/expansions.py b/FIAT/expansions.py
@@ -46,7 +46,7 @@ def form_derivative(F):
         out = []
         try:
             out = [sympy.diff(F, X[j]) for j in range(D)]
-        except AttributeError:
+        except (AttributeError, ValueError):
             # Intercept errors like
             #  AttributeError: 'list' object has no attribute
             #  'free_symbols'