Reverting the Revision: 77368.  I committed Flox's big patch for tests by
mistake. ( It may come in for sure tough)
diff --git a/Lib/test/test_trace.py b/Lib/test/test_trace.py
index df8c56f..f69af8d 100644
--- a/Lib/test/test_trace.py
+++ b/Lib/test/test_trace.py
@@ -401,7 +401,7 @@
         we're testing, so that the 'exception' trace event fires."""
         if self.raiseOnEvent == 'exception':
             x = 0
-            y = 1 // x
+            y = 1/x
         else:
             return 1