From 052280d4e942bbfdcccd028c9726db1282c511e6 2014-01-25 15:53:51
From: y-p <yoval@gmx.com>
Date: 2014-01-25 15:53:51
Subject: [PATCH] Guard against self.state is None

---

diff --git a/IPython/sphinxext/ipython_directive.py b/IPython/sphinxext/ipython_directive.py
index 1ea6ea8..6c29a89 100644
--- a/IPython/sphinxext/ipython_directive.py
+++ b/IPython/sphinxext/ipython_directive.py
@@ -429,8 +429,11 @@ class EmbeddedSphinxShell(object):
             ret.append('')
 
         # context information
-        filename = self.state.document.current_source
-        lineno = self.state.document.current_line
+        filename = "Unknown"
+        lineno = 0
+        if self.state:
+            filename = self.state.document.current_source
+            lineno = self.state.document.current_line
 
         # output any exceptions raised during execution to stdout
         # unless :okexcept: has been specified.