import wsgiref.handlers
from google.appengine.ext import webapp


class MainHandler(webapp.RequestHandler):

    def get(self):
        self.response.out.write('<myXml><node id=1 /></myXml>')

def main():
    application = webapp.WSGIApplication([('/', MainHandler)], debug=True)
wsgiref.handlers.CGIHandler().run(application)
if __name__ == '__main__':
    main()
Веб-службы с Google App Engine