Update libs

libs/html5lib/treewalkers/dom.py

@@ -1,10 +1,12 @@
+from __future__ import absolute_import, division, unicode_literals
+
 from xml.dom import Node
 
 import gettext
 _ = gettext.gettext
 
-import _base
-from html5lib.constants import voidElements
+from . import _base
+
 
 class TreeWalker(_base.NonRecursiveTreeWalker):
     def getNodeDetails(self, node):
@@ -16,10 +18,13 @@ class TreeWalker(_base.NonRecursiveTreeWalker):
 
         elif node.nodeType == Node.ELEMENT_NODE:
             attrs = {}
-            for attr in node.attributes.keys():
+            for attr in list(node.attributes.keys()):
                 attr = node.getAttributeNode(attr)
-                attrs[(attr.namespaceURI,attr.localName)] = attr.value
-            return (_base.ELEMENT, node.namespaceURI, node.nodeName, 
+                if attr.namespaceURI:
+                    attrs[(attr.namespaceURI, attr.localName)] = attr.value
+                else:
+                    attrs[(None, attr.name)] = attr.value
+            return (_base.ELEMENT, node.namespaceURI, node.nodeName,
                     attrs, node.hasChildNodes())
 
         elif node.nodeType == Node.COMMENT_NODE: