Fixed #3678 -- Implemented SortedDict.copy().

git-svn-id: http://code.djangoproject.com/svn/django/trunk@4688 bcc190cf-cafb-0310-a4f2-bffc1f526a37
django · Mar 9, 2007 · 22178d6 · 22178d6
1 parent fcd119b
commit 22178d6
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diff --git a/django/utils/datastructures.py b/django/utils/datastructures.py
@@ -92,6 +92,13 @@ def value_for_index(self, index):
         "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
 

diff --git a/tests/regressiontests/datastructures/tests.py b/tests/regressiontests/datastructures/tests.py
@@ -50,6 +50,8 @@
 >>> d['one'] = 'not one'
 >>> d['one']
 'not one'
+>>> d.keys() == d.copy().keys()
+True
 
 ### DotExpandedDict ############################################################