From 2a7d35857e30adf4381823c32e6716e4b90e5cf2 2015-02-12 21:39:57
From: Min RK <benjaminrk@gmail.com>
Date: 2015-02-12 21:39:57
Subject: [PATCH] Merge pull request #7765 from JanSchulz/Outstream_closed

Add closed property to outstream
---

diff --git a/IPython/kernel/zmq/iostream.py b/IPython/kernel/zmq/iostream.py
index 9c16033..fcd7f5e 100644
--- a/IPython/kernel/zmq/iostream.py
+++ b/IPython/kernel/zmq/iostream.py
@@ -116,6 +116,10 @@ class OutStream(object):
     def close(self):
         self.pub_socket = None
 
+    @property
+    def closed(self):
+        return self.pub_socket is None
+
     def _flush_from_subprocesses(self):
         """flush possible pub data from subprocesses into my buffer"""
         if not self._pipe_flag or not self._is_master_process():