From 22178d692a651be21fa9347502babe1bd17aabf2 Mon Sep 17 00:00:00 2001
From: Malcolm Tredinnick <malcolm.tredinnick@gmail.com>
Date: Fri, 9 Mar 2007 05:34:42 +0000
Subject: Fixed #3678 -- Implemented SortedDict.copy().

git-svn-id: http://code.djangoproject.com/svn/django/trunk@4688 bcc190cf-cafb-0310-a4f2-bffc1f526a37
---
 django/utils/datastructures.py | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'django/utils')

diff --git a/django/utils/datastructures.py b/django/utils/datastructures.py
index 94ab76c483..e924e4edbc 100644
--- a/django/utils/datastructures.py
+++ b/django/utils/datastructures.py
@@ -92,6 +92,13 @@ class SortedDict(dict):
         "Returns the value of the item at the given zero-based index."
         return self[self.keyOrder[index]]
 
+    def copy(self):
+        "Returns a copy of this object."
+        # This way of initialising the copy means it works for subclasses, too.
+        obj = self.__class__(self)
+        obj.keyOrder = self.keyOrder
+        return obj
+
 class MultiValueDictKeyError(KeyError):
     pass
 
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