Convert some custom sort comparison functions to equivalent key functions.
diff --git a/Tools/scripts/finddiv.py b/Tools/scripts/finddiv.py
index 9d5862b..558791f 100755
--- a/Tools/scripts/finddiv.py
+++ b/Tools/scripts/finddiv.py
@@ -78,7 +78,7 @@
         fn = os.path.join(dir, name)
         if os.path.normcase(fn).endswith(".py") or os.path.isdir(fn):
             files.append(fn)
-    files.sort(lambda a, b: cmp(os.path.normcase(a), os.path.normcase(b)))
+    files.sort(key=os.path.normcase)
     exit = None
     for fn in files:
         x = process(fn, listnames)