Move zero/one inside check

sagemath · Sep 13, 2022 · 252eafd · 252eafd
1 parent c55f72e
commit 252eafd
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/src/sage/combinat/diagram.py b/src/sage/combinat/diagram.py
@@ -483,10 +483,9 @@ def from_zero_one_matrix(self, M, check=True):
         # check matrix is zero-one
         n_rows, n_cols = M.dimensions()
 
-        zero = M.base_ring().zero()
-        one = M.base_ring().one()
-
         if check:
+            zero = M.base_ring().zero()
+            one = M.base_ring().one()
             for i in range(n_rows):
                 for j in range(n_cols):
                     if not (M[i,j] == zero or M[i,j] == one):