From ea52ef870475883ec108767d8f183b8f9afaedb1 Mon Sep 17 00:00:00 2001
From: Sylvain Corlay <scorlay@bloomberg.net>
Date: Wed, 30 Jul 2014 00:28:30 +0000
Subject: [PATCH] del Widget.widgets[seld.model_id] in close rather than in
 __del__

---
 IPython/html/widgets/widget.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/IPython/html/widgets/widget.py b/IPython/html/widgets/widget.py
index 3d1df8408..3a72d0de1 100644
--- a/IPython/html/widgets/widget.py
+++ b/IPython/html/widgets/widget.py
@@ -127,8 +127,6 @@ class Widget(LoggingConfigurable):
     def __del__(self):
         """Object disposal"""
         self.close()
-        del Widget.widgets[self.model_id]
-        self._comm = None
 
     #-------------------------------------------------------------------------
     # Properties
@@ -166,9 +164,10 @@ class Widget(LoggingConfigurable):
         Closes the underlying comm.
         When the comm is closed, all of the widget views are automatically
         removed from the front-end."""
+        del Widget.widgets[self.model_id]
         if self._comm is not None:
             self._comm.close()
-
+    
     def send_state(self, key=None):
         """Sends the widget state, or a piece of it, to the front-end.