change xml namespace

ml/tools.py

@@ -181,7 +181,7 @@ def __init__(self, path=None, xml_str=None):
         self._namespace = {
             'xsi': 'http://www.w3.org/2001/XMLSchema-instance',
             'schemaLocation': 'urn:skogforsk:stanford2010 HarvestedProduction_V3p0.xsd',
-            'standford_ns': 'urn:skogforsk:stanford2010'
+            '': 'urn:skogforsk:stanford2010'
         }
 
         for key in self._namespace: