(self, handler)
return handler
gets called when we class decorate
gets called when we class decorate
gets called when we class decorate
def __call__(self, handler):
        """gets called when we class decorate"""
        self._routes.append((self._regexp, handler))
        return handler
def __call__ ( self , handler ) : self . _routes . append ( ( self . _regexp , handler ) ) return handler