more portable dict check

pyamf/remoting/gateway/__init__.py

@@ -277,7 +277,7 @@ def __init__(self, services=None, **kwargs):
         if services is None:
             services = {}
 
-        if not hasattr(services, 'iteritems'):
+        if not hasattr(services, 'items'):
             raise TypeError("dict type required for services")
 
         self.services = ServiceCollection()