[mousetrap/gnome3-wip: 86/240] Replace Exception with NotImplementedError in interface.

[Heidi Ellis <heidiellis src gnome org>]

commit 5cbee3178178c5a2e1a76d0ae804b82803d32906
Author: Stoney Jackson <dr stoney gmail com>
Date:   Thu Jun 12 13:34:42 2014 -0400

    Replace Exception with NotImplementedError in interface.

 src/mousetrap/pointers/interface.py |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/mousetrap/pointers/interface.py b/src/mousetrap/pointers/interface.py
index b463df9..74653d3 100644
--- a/src/mousetrap/pointers/interface.py
+++ b/src/mousetrap/pointers/interface.py
@@ -6,8 +6,8 @@ that inherits mousetrap.pointers.interface.Pointer.
 
 class Pointer(object):
     def update_image(self, image):
-        raise Exception('Unimplemented method add_image().')
+        raise NotImplementedError('Must implement.')
 
     def get_new_position(self):
         '''Returns new location (x, y) or None if no change.'''
-        raise Exception('Unimplemented method get_position().')
+        raise NotImplementedError('Must implement.')