Fixup is_simplicial for tensor product elements

python/dune/codegen/error.py

@@ -26,4 +26,4 @@ class CodegenAutotuneError(CodegenVectorizationError):
 
 
 class CodegenUnsupportedFiniteElementError(CodegenUFLError):
-    pass
+    pass
\ No newline at end of file

python/dune/codegen/pdelab/driver/__init__.py

@@ -87,7 +87,7 @@ def isLagrange(fem):
 
 def isSimplical(cell):
     if isinstance(cell, TensorProductCell):
-        return all(tuple(isSimplical(c) for c in cell.sub_cells()))
+        return False
 
     # Cells can be identified through strings *or* ufl objects
     if not isinstance(cell, str):