String method conversion.
(This one was trivial -- no actual string. references in it!)
diff --git a/Lib/test/test_sre.py b/Lib/test/test_sre.py
index 88c0d62..89364d5 100644
--- a/Lib/test/test_sre.py
+++ b/Lib/test/test_sre.py
@@ -8,7 +8,7 @@
 
 from test_support import verbose, TestFailed
 import sre
-import sys, os, string, traceback
+import sys, os, traceback
 
 #
 # test support