webapp2 handler as a decorator. when defining a full class seems "heavy"

webapp2_handler.py

def webapp2_handler(method):
    allowed_methods = set(['GET', 'POST', 'DELETE', 'PUT'])
    if method not in allowed_methods:
        raise ValueError("%s is an invalid HTTP method" % method)
    def wrap(f):
        return type('', (webapp2.RequestHandler,), {
            method.lower(): f
        })
    return wrap

# example
@webapp2_handler(method='DELETE')
def test_handler(self, digits):
    self.response.write("given digits: %s" % digits)

APPLICATION = webapp2.WSGIApplication([ ('/test/(\d+)', test_handler), ], debug=True)