The first batch of changes recommended by the fixdiv tool.  These are
mostly changes of / operators into //.  Once or twice I did more or
less than recommended.
diff --git a/Lib/test/test_compare.py b/Lib/test/test_compare.py
index bc833ea..8100aec 100644
--- a/Lib/test/test_compare.py
+++ b/Lib/test/test_compare.py
@@ -47,7 +47,7 @@
     # Ensure default comparison compares id() of args
     L = []
     for i in range(10):
-        L.insert(len(L)/2, Empty())
+        L.insert(len(L)//2, Empty())
     for a in L:
         for b in L:
             if cmp(a, b) != cmp(id(a), id(b)):