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-rw-r--r--src/sage/combinat/alternating_sign_matrix.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/sage/combinat/alternating_sign_matrix.py b/src/sage/combinat/alternating_sign_matrix.py
index 3cafa2d..7261164 100644
--- a/src/sage/combinat/alternating_sign_matrix.py
+++ b/src/sage/combinat/alternating_sign_matrix.py
@@ -40,7 +40,7 @@ from sage.misc.all import prod
from sage.structure.unique_representation import UniqueRepresentation
from sage.structure.parent import Parent
from sage.structure.element import Element
-from sage.structure.sage_object import op_NE, richcmp
+from sage.structure.richcmp import op_NE, richcmp
from sage.categories.finite_enumerated_sets import FiniteEnumeratedSets
from sage.matrix.matrix_space import MatrixSpace
from sage.matrix.constructor import matrix