$OpenBSD: patch-zmq_sugar_context_py,v 1.2 2016/01/17 07:11:03 shadchin Exp $
--- zmq/sugar/context.py.orig	Tue Jan 12 19:31:19 2016
+++ zmq/sugar/context.py	Thu Jan 14 11:16:31 2016
@@ -77,6 +77,7 @@ class Context(ContextBase, AttributeSetter):
         .. versionadded:: 14.1
         """
         from pyczmq import zctx
+        from zmq.utils.interop import cast_int_addr
         
         underlying = zctx.underlying(ctx)
         address = cast_int_addr(underlying)
