disallow float for diamatrix values (#1931)

cvxpy · Nov 5, 2022 · 86e8508 · 86e8508
1 parent 643f5e1
commit 86e8508
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/cvxpy/atoms/elementwise/elementwise.py b/cvxpy/atoms/elementwise/elementwise.py
@@ -60,7 +60,7 @@ def elemwise_grad_to_diag(value, rows, cols):
         """
         if not np.isscalar(value):
             value = value.ravel(order='F')
-        return sp.dia_matrix((value, [0]), shape=(rows, cols)).tocsc()
+        return sp.dia_matrix((np.atleast_1d(value), [0]), shape=(rows, cols)).tocsc()
 
     @staticmethod
     def _promote(arg, shape: Tuple[int, ...]):