From 48783e5ceb7f60c33db81ab72e5024f42b220990 Mon Sep 17 00:00:00 2001
From: Eric Wieser <wieser.eric@gmail.com>
Date: Fri, 24 Feb 2017 16:46:58 +0000
Subject: MAINT: replace len(x.shape) with x.ndim

---
 numpy/matrixlib/defmatrix.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'numpy/matrixlib/defmatrix.py')

diff --git a/numpy/matrixlib/defmatrix.py b/numpy/matrixlib/defmatrix.py
index 6c7640cb8..bd14846c6 100644
--- a/numpy/matrixlib/defmatrix.py
+++ b/numpy/matrixlib/defmatrix.py
@@ -169,7 +169,7 @@ def matrix_power(M, n):
 
     """
     M = asanyarray(M)
-    if len(M.shape) != 2 or M.shape[0] != M.shape[1]:
+    if M.ndim != 2 or M.shape[0] != M.shape[1]:
         raise ValueError("input must be a square array")
     if not issubdtype(type(n), int):
         raise TypeError("exponent must be an integer")
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