fix add_metaclass when there is a __weakref__ or __dict__ slot (closes #88)

1 files changed, 2 insertions, 2 deletions

diff --git a/six.py b/six.py
index 6940d0d..304f618 100644
--- a/six.py
+++ b/six.py
@@ -719,14 +719,14 @@ def add_metaclass(metaclass):
     """Class decorator for creating a class with a metaclass."""
     def wrapper(cls):
         orig_vars = cls.__dict__.copy()
-        orig_vars.pop('__dict__', None)
-        orig_vars.pop('__weakref__', None)
         slots = orig_vars.get('__slots__')
         if slots is not None:
             if isinstance(slots, str):
                 slots = [slots]
             for slots_var in slots:
                 orig_vars.pop(slots_var)
+        orig_vars.pop('__dict__', None)
+        orig_vars.pop('__weakref__', None)
         return metaclass(cls.__name__, cls.__bases__, orig_vars)
     return wrapper