handler.py 文件源码

def render(self, exception):
        """
        Render the exception
        :param exception:   The exception
        :type  exception:   Exception
        :return:            The response
        """

        if not isinstance(exception, HTTPException):
            http_exception = InternalServerError()
        else:
            http_exception = exception
        is_server_error = http_exception.code - (http_exception.code % 100) == 500

        if self.app.debug and is_server_error:
            if sys.version_info < (3, 0):
                exc_type, exc_value, tb = sys.exc_info()
                if exc_value is exception:
                    reraise(exc_type, exc_value, tb)
            raise exception
        else:
            if self.app.testing and is_server_error and isinstance(exception, Exception):
                http_exception.description = '%s' % exception
            return http_exception.get_response()