define callable to builtin callable when it's available on the latest py3 versions (fixes #17)

1 files changed, 7 insertions, 3 deletions

diff --git a/six.py b/six.py
index 4fc0d2c..ab45e38 100644
--- a/six.py
+++ b/six.py
@@ -235,14 +235,18 @@ except NameError:
 next = advance_iterator
 
 
+try:
+    callable = callable
+except NameError:
+    def callable(obj):
+        return any("__call__" in klass.__dict__ for klass in type(obj).__mro__)
+
+
 if PY3:
     def get_unbound_function(unbound):
         return unbound
 
     Iterator = object
-
-    def callable(obj):
-        return any("__call__" in klass.__dict__ for klass in type(obj).__mro__)
 else:
     def get_unbound_function(unbound):
         return unbound.im_func