webapp2.py 文件源码

def match(self, request):
        """Matches this route against the current request.

        :raises:
            ``exc.HTTPMethodNotAllowed`` if the route defines :attr:`methods`
            and the request method isn't allowed.

        .. seealso:: :meth:`BaseRoute.match`.
        """
        match = self.regex.match(unquote(request.path))
        if not match or self.schemes and request.scheme not in self.schemes:
            return None

        if self.methods and request.method not in self.methods:
            # This will be caught by the router, so routes with different
            # methods can be tried.
            raise exc.HTTPMethodNotAllowed()

        args, kwargs = _get_route_variables(match, self.defaults.copy())
        return self, args, kwargs