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-rw-r--r--django/utils/datastructures.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/django/utils/datastructures.py b/django/utils/datastructures.py
index 94ab76c483..7b7fa2b0f0 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 initializing the copy means it works for subclasses, too.
+ obj = self.__class__(self)
+ obj.keyOrder = self.keyOrder
+ return obj
+
class MultiValueDictKeyError(KeyError):
pass