From 8d40cbd1d2cf431454dcfd9a9088be73687e7c1a Mon Sep 17 00:00:00 2001
From: Steven Silvester <steven.silvester@ieee.org>
Date: Wed, 24 Dec 2014 06:38:20 -0600
Subject: [PATCH] Allow viewer package to import without Qt

---
 skimage/viewer/__init__.py | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/skimage/viewer/__init__.py b/skimage/viewer/__init__.py
index 2ae55ed4..8c2c33cf 100644
--- a/skimage/viewer/__init__.py
+++ b/skimage/viewer/__init__.py
@@ -1,6 +1,5 @@
+import warnings
 try:
-    from .qt import QtGui as _QtGui
+    from .viewers import ImageViewer, CollectionViewer
 except ImportError as e:
-    raise ImportError('Viewer requires Qt')
-
-from .viewers import ImageViewer, CollectionViewer
+    warnings.warn('Viewer requires Qt')