1 files changed, 13 insertions, 13 deletions
diff --git a/tools/site_compare/operators/equals_with_mask.py b/tools/site_compare/operators/equals_with_mask.py
index fd4000b..d6abd53 100644
--- a/tools/site_compare/operators/equals_with_mask.py
+++ b/tools/site_compare/operators/equals_with_mask.py
@@ -13,49 +13,49 @@ import os.path
 
 def Compare(file1, file2, **kwargs):
   """Compares two images to see if they're identical subject to a mask.
-  
+
   An optional directory containing masks is supplied. If a mask exists
   which matches file1's name, areas under the mask where it's black
   are ignored.
-  
+
   Args:
     file1: path to first image to compare
     file2: path to second image to compare
     kwargs: ["maskdir"] contains the directory holding the masks
-    
+
   Returns:
     None if the images are identical
     A tuple of (errorstring, image) if they're not
   """
-  
+
   maskdir = None
   if "maskdir" in kwargs:
     maskdir = kwargs["maskdir"]
-  
+
   im1 = Image.open(file1)
   im2 = Image.open(file2)
-  
+
   if im1.size != im2.size:
     return ("The images are of different size (%r vs %r)" %
             (im1.size, im2.size), im1)
 
   diff = ImageChops.difference(im1, im2)
-  
+
   if maskdir:
     maskfile = os.path.join(maskdir, os.path.basename(file1))
     if os.path.exists(maskfile):
       mask = Image.open(maskfile)
-      
+
       if mask.size != im1.size:
         return ("The mask is of a different size than the images (%r vs %r)" %
                 (mask.size, im1.size), mask)
-      
+
       diff = ImageChops.multiply(diff, mask.convert(diff.mode))
-  
+
   if max(diff.getextrema()) != (0, 0):
     return ("The images differ", diff)
   else:
     return None
-  
-  
-  
+
+
+