From b166016da52930b0d98c7bfb27832d3d8004c5f8 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 31 Jul 2009 12:22:26 -0600
Subject: [PATCH] Fix #3016 (lxml.etree._Element' object has no attribute
 'href)

---
 src/calibre/ebooks/oeb/stylizer.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/calibre/ebooks/oeb/stylizer.py b/src/calibre/ebooks/oeb/stylizer.py
index 9a52709ca4..da68dc2f69 100644
--- a/src/calibre/ebooks/oeb/stylizer.py
+++ b/src/calibre/ebooks/oeb/stylizer.py
@@ -137,6 +137,11 @@ class Stylizer(object):
                         'Stylesheet %r referenced by file %r not in manifest' %
                         (path, item.href))
                     continue
+                if not hasattr(sitem.data, 'cssRules'):
+                    self.logger.warn(
+                    'Stylesheet %r referenced by file %r is not CSS'%(path,
+                        item.href))
+                    continue
                 stylesheets.append(sitem.data)
         for x in (extra_css, user_css):
             if x: