Missing part of for etree treewalker to report the end tag of the root node

jgraham · jgraham · commit 8ae506ea7e7e · 2007-09-05T12:01:07.000Z
--HG--
extra : convert_revision : svn%3Aacbfec75-9323-0410-a652-858a13e371e0/trunk%40993
diff --git a/src/html5lib/treewalkers/etree.py b/src/html5lib/treewalkers/etree.py
@@ -101,12 +101,14 @@ def getNextSibling(self, node):
                 return None
 
         def getParentNode(self, node):
-            assert isinstance(node, tuple)
-            elt, key, parents = node
-            if parents:
-                elt, key = parents.pop()
-                return elt, key, parents
+            if isinstance(node, tuple):
+                elt, key, parents = node
+                if parents:
+                    elt, key = parents.pop()
+                    return elt, key, parents
+                else:
+                    return elt
             else:
-                return elt
+                return None
 
     return locals()
