Removed support for Python 3.3.

1 files changed, 3 insertions, 2 deletions

diff --git a/django/dispatch/dispatcher.py b/django/dispatch/dispatcher.py
index b2d774bda6..73213afe94 100644
--- a/django/dispatch/dispatcher.py
+++ b/django/dispatch/dispatcher.py
@@ -3,11 +3,12 @@ import threading
 import warnings
 import weakref
 
+from django.utils import six
 from django.utils.deprecation import RemovedInDjango21Warning
 from django.utils.inspect import func_accepts_kwargs
 from django.utils.six.moves import range
 
-if sys.version_info < (3, 4):
+if six.PY2:
     from .weakref_backports import WeakMethod
 else:
     from weakref import WeakMethod
@@ -108,7 +109,7 @@ class Signal(object):
             if hasattr(receiver, '__self__') and hasattr(receiver, '__func__'):
                 ref = WeakMethod
                 receiver_object = receiver.__self__
-            if sys.version_info >= (3, 4):
+            if six.PY3:
                 receiver = ref(receiver)
                 weakref.finalize(receiver_object, self._remove_receiver)
             else: