add load_tree function

setup.py

 from setuptools import setup, find_packages
 import sys, os
 
-version = '0.9'
+version = '0.9a'
 
 setup(name='xml_marshaller',
       version=version,

xml_marshaller/xml_marshaller.py

@@ -13,7 +13,7 @@ from types import ClassType
 import sys
 from xml.sax import make_parser
 from xml.sax.saxutils import escape, unescape
-from lxml.sax import ElementTreeContentHandler
+from lxml.sax import ElementTreeContentHandler, saxify
 from lxml import etree
 from lxml.builder import ElementMaker
 from cStringIO import StringIO
@@ -300,6 +300,18 @@ class Unmarshaller(ElementTreeContentHandler):
     m = self.__class__()
     return m._load(file_object)
 
+  def load_tree(self, tree):
+    """Unmarshal element_tree object and return 
+    python object.
+    """
+    parser = make_parser()
+    parser.setFeature('http://xml.org/sax/features/namespaces', True)
+    parser.setContentHandler(self)
+    saxify(tree, self)
+    result = self.data_stack[0]
+    self._clear()
+    return result
+
   def loads(self, string):
     "Unmarshal one value from a string"
     # Instantiate a new object; unmarshalling isn't thread-safe
@@ -552,6 +564,7 @@ dumps_ns = _m_ns.dumps
 _um = Unmarshaller()
 load = _um.load
 loads = _um.loads
+load_tree = _um.load_tree
 
 del _m, _um, _m_ns