From 7e71a8e0423ff8c72dfbac6a4e4d854685472bbe Mon Sep 17 00:00:00 2001
From: Almar Klein <almar.klein@gmail.com>
Date: Tue, 26 Jul 2016 22:22:35 +0200
Subject: [PATCH] MC: add comment about except

---
 skimage/measure/_marching_cubes_lewiner.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/skimage/measure/_marching_cubes_lewiner.py b/skimage/measure/_marching_cubes_lewiner.py
index d2ba4aa5..60f37feb 100644
--- a/skimage/measure/_marching_cubes_lewiner.py
+++ b/skimage/measure/_marching_cubes_lewiner.py
@@ -152,7 +152,7 @@ def marching_cubes(volume, level=None, spacing=(1., 1., 1.),
     try:
         nout = _expected_output_args()
     except Exception:
-        nout = 0
+        nout = 0  # always warn if, for whaterver reason, the black magic in above call fails
     if nout <= 2:
         warn(skimage_deprecation('`marching_cubes` now uses a better and '
                                  'faster algorithm, and returns four instead '