From edbea40353106c2d7af992971090c262e76f74fb 2015-04-07 16:39:33
From: Jessica B. Hamrick <jhamrick@berkeley.edu>
Date: 2015-04-07 16:39:33
Subject: [PATCH] Handle comm messages in execute preprocessor

---

diff --git a/jupyter_nbconvert/preprocessors/execute.py b/jupyter_nbconvert/preprocessors/execute.py
index b8c3dce..46da10c 100644
--- a/jupyter_nbconvert/preprocessors/execute.py
+++ b/jupyter_nbconvert/preprocessors/execute.py
@@ -130,6 +130,8 @@ class ExecutePreprocessor(Preprocessor):
             elif msg_type == 'clear_output':
                 outs = []
                 continue
+            elif msg_type.startswith('comm'):
+                continue
 
             try:
                 out = output_from_msg(msg)