import xml.dom.minidom

def parseXMLFile(filename):

    doc = xml.dom.minidom.parse(filename)
        try:
            root = doc.documentElement
            # make sure this is a valid xml file
            if (not root or root.tagName != 'ut_response status'): raise
            
            # make sure <video_list> block exists
            video_list = self.FirstChildElement(root, 'video_list')
            if (not video_list or not video_list.firstChild): raise

            # parse and resolve each <video>
            data = video_list.getElementsByTagName('video')
            if (not data): raise
            for video in data:
                node = self.FirstChildElement(tmp, None)
                while (node):
                    # key node get value
                    if (node.tagName.lower() == 'title' and node.hasChildNodes()): 
                        title = node.firstChild.nodeValue
                    elif (node.tagName.lower() == 'url' and node.hasChildNodes()): 
                        url = node.firstChild.nodeValue
                    node = node.nextSibling
        except:
            pass