routing.py 文件源码

def allowed_methods(self, path_info=None):
        """Returns the valid methods that match for a given path.

        .. versionadded:: 0.7
        """
        try:
            self.match(path_info, method='--')
        except MethodNotAllowed as e:
            return e.valid_methods
        except HTTPException as e:
            pass
        return []