From 0efa17c94386c957cf63aad7d2d513c14cd8fd4a Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Wed, 11 Dec 2002 07:16:06 +0000
Subject: Clean-up test class for DictMixin.

---
 Lib/test/test_userdict.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Lib/test/test_userdict.py b/Lib/test/test_userdict.py
index e61238f..a7541c8 100644
--- a/Lib/test/test_userdict.py
+++ b/Lib/test/test_userdict.py
@@ -155,8 +155,12 @@ class SeqDict(DictMixin):
             raise KeyError
         return self.valuelist[i]
     def __setitem__(self, key, value):
-        self.keylist.append(key)
-        self.valuelist.append(value)
+        try:
+            i = self.keylist.index(key)
+            self.valuelist[i] = value
+        except ValueError:
+            self.keylist.append(key)
+            self.valuelist.append(value)
     def __delitem__(self, key):
         try:
             i = self.keylist.index(key)
-- 
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