Rename buffer -> bytearray.
diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py
index 116145e..e9285a6 100644
--- a/Lib/test/string_tests.py
+++ b/Lib/test/string_tests.py
@@ -532,8 +532,8 @@
 
         # XXX Commented out. Is there any reason to support buffer objects
         # as arguments for str.replace()?  GvR
-##         ba = buffer('a')
-##         bb = buffer('b')
+##         ba = bytearray('a')
+##         bb = bytearray('b')
 ##         EQ("bbc", "abc", "replace", ba, bb)
 ##         EQ("aac", "abc", "replace", bb, ba)