Merged revisions 83152 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r83152 | andrew.kuchling | 2010-07-25 19:38:47 -0400 (Sun, 25 Jul 2010) | 1 line

  #777884: make .normalize() do nothing for childless nodes, instead of raising an exception
........
diff --git a/Lib/xml/dom/minidom.py b/Lib/xml/dom/minidom.py
index 02e3b85..12b7afc 100644
--- a/Lib/xml/dom/minidom.py
+++ b/Lib/xml/dom/minidom.py
@@ -890,6 +890,10 @@
         raise xml.dom.NotFoundErr(
             self.nodeName + " nodes do not have children")
 
+    def normalize(self):
+        # For childless nodes, normalize() has nothing to do.
+        pass
+
     def replaceChild(self, newChild, oldChild):
         raise xml.dom.HierarchyRequestErr(
             self.nodeName + " nodes do not have children")