web.py 文件源码

def _handle_request_exception(self, e):
        if isinstance(e, Finish):
            # Not an error; just finish the request without logging.
            if not self._finished:
                self.finish(*e.args)
            return
        try:
            self.log_exception(*sys.exc_info())
        except Exception:
            # An error here should still get a best-effort send_error()
            # to avoid leaking the connection.
            app_log.error("Error in exception logger", exc_info=True)
        if self._finished:
            # Extra errors after the request has been finished should
            # be logged, but there is no reason to continue to try and
            # send a response.
            return
        if isinstance(e, HTTPError):
            if e.status_code not in httputil.responses and not e.reason:
                gen_log.error("Bad HTTP status code: %d", e.status_code)
                self.send_error(500, exc_info=sys.exc_info())
            else:
                self.send_error(e.status_code, exc_info=sys.exc_info())
        else:
            self.send_error(500, exc_info=sys.exc_info())