From 3e4f570d16cdb74472f42a7b6b2fe87865106ae5 Mon Sep 17 00:00:00 2001
From: Marco Pesenti Gritti <marco@localhost.localdomain>
Date: Mon, 30 Oct 2006 16:05:01 +0000
Subject: Do not catch exceptions from the called method

---
diff --git a/sugar/graphics/timeline.py b/sugar/graphics/timeline.py
index 77d2428..5c40ca5 100644
--- a/sugar/graphics/timeline.py
+++ b/sugar/graphics/timeline.py
@@ -30,9 +30,11 @@ class TimelineObserver:
 	def next_frame(self, tag, current_frame, n_frames):
 		try:
 			method = getattr(self._observer, 'do_' + tag)
-			method(current_frame, n_frames)
 		except AttributeError:
-			pass
+			method = None
+
+		if method:
+			method(current_frame, n_frames)
 
 class Timeline:
 	def __init__(self, observer):
--
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