controller.py 文件源码

def write_error(self, status_code, **kwargs):
        if 'exc_info' in kwargs:
            exc_type, exc, trace = kwargs['exc_info']
            if exc.args and isinstance(exc.args[0], dict):
                error = exc.args[0]
            else:
                error = dict()
            if tornado_options.debug:
                error['traceback'] = format_exception(exc_type, exc, trace)
            self.reply(error)