Avoid deprecation warnings.
diff --git a/Lib/test/test_timeit.py b/Lib/test/test_timeit.py
index 7154217..a084b68 100644
--- a/Lib/test/test_timeit.py
+++ b/Lib/test/test_timeit.py
@@ -197,7 +197,7 @@
 
     def test_print_exc(self):
         s = StringIO()
-        t = timeit.Timer("1/0")
+        t = timeit.Timer("1.0/0.0")
         try:
             t.timeit()
         except: