From 1a5ada01010a7b9472c46d46f5c6d2ddcdcb1226 Mon Sep 17 00:00:00 2001
From: Adrian Holovaty <adrian@holovaty.com>
Date: Fri, 23 Sep 2005 00:12:24 +0000
Subject: [PATCH] Fixed #539 -- Added support for strides to 'slice' template
 filter, and made the code more efficient. Thanks, Esaj

git-svn-id: http://code.djangoproject.com/svn/django/trunk@666 bcc190cf-cafb-0310-a4f2-bffc1f526a37
---
 django/core/defaultfilters.py | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/django/core/defaultfilters.py b/django/core/defaultfilters.py
index ff55219f0b..eb3ec11c95 100644
--- a/django/core/defaultfilters.py
+++ b/django/core/defaultfilters.py
@@ -245,19 +245,9 @@ def slice_(value, arg):
     for an introduction.
     """
     try:
-        start, finish = arg.split(':')
-    except ValueError: # unpack list of wrong size
-        return value # fail silently but nicely
-    try:
-        if start and finish:
-            return value[int(start):int(finish)]
-        if start:
-            return value[int(start):]
-        if finish:
-            return value[:int(finish)]
-    except TypeError:
-        pass
-    return value
+        return value[slice(*[x and int(x) or None for x in arg.split(':')])]
+    except (ValueError, TypeError):
+        return value # Fail silently.
 
 def unordered_list(value, _):
     """