diff -r d0efb8532589 Lib/gettext.py
--- a/Lib/gettext.py	Mon Nov 14 19:31:04 2016 +0200
+++ b/Lib/gettext.py	Mon Nov 14 19:55:43 2016 +0200
@@ -164,6 +164,10 @@ def _as_int(n):
     except TypeError:
         raise TypeError('Plural value must be an integer, got %s' %
                         (n.__class__.__name__,)) from None
+    import warnings
+    warnings.warn('Plural value must be an integer, got %s' %
+                  (n.__class__.__name__,),
+                  DeprecationWarning, 4)
     return n
 
 def c2py(plural):
@@ -190,6 +194,7 @@ def c2py(plural):
                 depth -= 1
 
         ns = {'_as_int': _as_int}
+        print([result])
         exec('''if True:
             def func(n):
                 if not isinstance(n, int):
diff -r d0efb8532589 Lib/test/test_gettext.py
--- a/Lib/test/test_gettext.py	Mon Nov 14 19:31:04 2016 +0200
+++ b/Lib/test/test_gettext.py	Mon Nov 14 19:55:43 2016 +0200
@@ -443,9 +443,12 @@ class PluralFormsTestCase(GettextBaseTes
         f = gettext.c2py('n != 1')
         self.assertEqual(f(1), 0)
         self.assertEqual(f(2), 1)
-        self.assertEqual(f(1.0), 0)
-        self.assertEqual(f(2.0), 1)
-        self.assertEqual(f(1.1), 1)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(f(1.0), 0)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(f(2.0), 1)
+        with self.assertWarns(DeprecationWarning):
+            self.assertEqual(f(1.1), 1)
         self.assertRaises(TypeError, f, '2')
         self.assertRaises(TypeError, f, b'2')
         self.assertRaises(TypeError, f, [])