From dc9ece7edf1826657885ac70840e454e6831f198 Mon Sep 17 00:00:00 2001
From: "github-actions[bot]" <github-actions[bot]@users.noreply.github.com>
Date: Fri, 10 Jan 2025 03:44:40 +0000
Subject: [PATCH] chore: Files formated

---
 mpqp/tools/maths.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mpqp/tools/maths.py b/mpqp/tools/maths.py
index 630b2694..04e1ec7f 100644
--- a/mpqp/tools/maths.py
+++ b/mpqp/tools/maths.py
@@ -153,7 +153,9 @@ def is_diagonal(matrix: Matrix):
 
     i, j = matrix.shape
     if i != j:
-        raise ValueError("The input matrix is not square. Dimensions = (" + i + ", " + j + ").")
+        raise ValueError(
+            "The input matrix is not square. Dimensions = (" + i + ", " + j + ")."
+        )
     test = matrix.reshape(-1)[:-1].reshape(i - 1, j + 1)
     return ~np.any(test[:, 1:])