app.py 文件源码

def raise_routing_exception(self, request):
        """Exceptions that are recording during routing are reraised with
        this method.  During debug we are not reraising redirect requests
        for non ``GET``, ``HEAD``, or ``OPTIONS`` requests and we're raising
        a different error instead to help debug situations.

        :internal:
        """
        if not self.debug \
           or not isinstance(request.routing_exception, RequestRedirect) \
           or request.method in ('GET', 'HEAD', 'OPTIONS'):
            raise request.routing_exception

        from .debughelpers import FormDataRoutingRedirect
        raise FormDataRoutingRedirect(request)